backend/open_webui/main.py

import asyncio
import inspect
import json
import logging
import mimetypes
import os
import shutil
import sys
import time
import random
import re
from uuid import uuid4


from contextlib import asynccontextmanager
from urllib.parse import urlencode, parse_qs, urlparse
from pydantic import BaseModel
from sqlalchemy import text

from typing import Optional
from aiocache import cached
import aiohttp
import anyio.to_thread
import requests
from redis import Redis


from fastapi import (
    Depends,
    FastAPI,
    File,
    Form,
    HTTPException,
    Request,
    UploadFile,
    status,
    applications,
    BackgroundTasks,
)
from fastapi.openapi.docs import get_swagger_ui_html

from fastapi.middleware.cors import CORSMiddleware
from fastapi.responses import FileResponse, JSONResponse, RedirectResponse
from fastapi.staticfiles import StaticFiles

from starlette_compress import CompressMiddleware

from starlette.exceptions import HTTPException as StarletteHTTPException
from starlette.middleware.base import BaseHTTPMiddleware
from starlette.middleware.sessions import SessionMiddleware
from starlette.responses import Response, StreamingResponse
from starlette.datastructures import Headers

from starsessions import (
    SessionMiddleware as StarSessionsMiddleware,
    SessionAutoloadMiddleware,
)
from starsessions.stores.redis import RedisStore

from open_webui.utils import logger
from open_webui.utils.audit import AuditLevel, AuditLoggingMiddleware
from open_webui.utils.logger import start_logger
from open_webui.socket.main import (
    MODELS,
    app as socket_app,
    periodic_usage_pool_cleanup,
    periodic_session_pool_cleanup,
    get_event_emitter,
    get_models_in_use,
)
from open_webui.routers import (
    analytics,
    audio,
    images,
    ollama,
    openai,
    retrieval,
    pipelines,
    tasks,
    auths,
    channels,
    chats,
    notes,
    folders,
    configs,
    groups,
    files,
    functions,
    memories,
    models,
    knowledge,
    prompts,
    evaluations,
    skills,
    tools,
    users,
    utils,
    scim,
)

from open_webui.routers.retrieval import (
    get_embedding_function,
    get_reranking_function,
    get_ef,
    get_rf,
)


from sqlalchemy.orm import Session
from open_webui.internal.db import ScopedSession, engine, get_session

from open_webui.models.functions import Functions
from open_webui.models.models import Models
from open_webui.models.users import UserModel, Users
from open_webui.models.chats import Chats

from open_webui.config import (
    # Ollama
    ENABLE_OLLAMA_API,
    OLLAMA_BASE_URLS,
    OLLAMA_API_CONFIGS,
    # OpenAI
    ENABLE_OPENAI_API,
    OPENAI_API_BASE_URLS,
    OPENAI_API_KEYS,
    OPENAI_API_CONFIGS,
    # Direct Connections
    ENABLE_DIRECT_CONNECTIONS,
    # Model list
    ENABLE_BASE_MODELS_CACHE,
    # Thread pool size for FastAPI/AnyIO
    THREAD_POOL_SIZE,
    # Tool Server Configs
    TOOL_SERVER_CONNECTIONS,
    # Code Execution
    ENABLE_CODE_EXECUTION,
    CODE_EXECUTION_ENGINE,
    CODE_EXECUTION_JUPYTER_URL,
    CODE_EXECUTION_JUPYTER_AUTH,
    CODE_EXECUTION_JUPYTER_AUTH_TOKEN,
    CODE_EXECUTION_JUPYTER_AUTH_PASSWORD,
    CODE_EXECUTION_JUPYTER_TIMEOUT,
    ENABLE_CODE_INTERPRETER,
    CODE_INTERPRETER_ENGINE,
    CODE_INTERPRETER_PROMPT_TEMPLATE,
    CODE_INTERPRETER_JUPYTER_URL,
    CODE_INTERPRETER_JUPYTER_AUTH,
    CODE_INTERPRETER_JUPYTER_AUTH_TOKEN,
    CODE_INTERPRETER_JUPYTER_AUTH_PASSWORD,
    CODE_INTERPRETER_JUPYTER_TIMEOUT,
    ENABLE_MEMORIES,
    # Image
    AUTOMATIC1111_API_AUTH,
    AUTOMATIC1111_BASE_URL,
    AUTOMATIC1111_PARAMS,
    COMFYUI_BASE_URL,
    COMFYUI_API_KEY,
    COMFYUI_WORKFLOW,
    COMFYUI_WORKFLOW_NODES,
    ENABLE_IMAGE_GENERATION,
    ENABLE_IMAGE_PROMPT_GENERATION,
    IMAGE_GENERATION_ENGINE,
    IMAGE_GENERATION_MODEL,
    IMAGE_SIZE,
    IMAGE_STEPS,
    IMAGES_OPENAI_API_BASE_URL,
    IMAGES_OPENAI_API_VERSION,
    IMAGES_OPENAI_API_KEY,
    IMAGES_OPENAI_API_PARAMS,
    IMAGES_GEMINI_API_BASE_URL,
    IMAGES_GEMINI_API_KEY,
    IMAGES_GEMINI_ENDPOINT_METHOD,
    ENABLE_IMAGE_EDIT,
    IMAGE_EDIT_ENGINE,
    IMAGE_EDIT_MODEL,
    IMAGE_EDIT_SIZE,
    IMAGES_EDIT_OPENAI_API_BASE_URL,
    IMAGES_EDIT_OPENAI_API_KEY,
    IMAGES_EDIT_OPENAI_API_VERSION,
    IMAGES_EDIT_GEMINI_API_BASE_URL,
    IMAGES_EDIT_GEMINI_API_KEY,
    IMAGES_EDIT_COMFYUI_BASE_URL,
    IMAGES_EDIT_COMFYUI_API_KEY,
    IMAGES_EDIT_COMFYUI_WORKFLOW,
    IMAGES_EDIT_COMFYUI_WORKFLOW_NODES,
    # Audio
    AUDIO_STT_ENGINE,
    AUDIO_STT_MODEL,
    AUDIO_STT_SUPPORTED_CONTENT_TYPES,
    AUDIO_STT_OPENAI_API_BASE_URL,
    AUDIO_STT_OPENAI_API_KEY,
    AUDIO_STT_AZURE_API_KEY,
    AUDIO_STT_AZURE_REGION,
    AUDIO_STT_AZURE_LOCALES,
    AUDIO_STT_AZURE_BASE_URL,
    AUDIO_STT_AZURE_MAX_SPEAKERS,
    AUDIO_STT_MISTRAL_API_KEY,
    AUDIO_STT_MISTRAL_API_BASE_URL,
    AUDIO_STT_MISTRAL_USE_CHAT_COMPLETIONS,
    AUDIO_TTS_ENGINE,
    AUDIO_TTS_MODEL,
    AUDIO_TTS_VOICE,
    AUDIO_TTS_OPENAI_API_BASE_URL,
    AUDIO_TTS_OPENAI_API_KEY,
    AUDIO_TTS_OPENAI_PARAMS,
    AUDIO_TTS_API_KEY,
    AUDIO_TTS_SPLIT_ON,
    AUDIO_TTS_AZURE_SPEECH_REGION,
    AUDIO_TTS_AZURE_SPEECH_BASE_URL,
    AUDIO_TTS_AZURE_SPEECH_OUTPUT_FORMAT,
    PLAYWRIGHT_WS_URL,
    PLAYWRIGHT_TIMEOUT,
    FIRECRAWL_API_BASE_URL,
    FIRECRAWL_API_KEY,
    FIRECRAWL_TIMEOUT,
    WEB_LOADER_ENGINE,
    WEB_LOADER_CONCURRENT_REQUESTS,
    WEB_LOADER_TIMEOUT,
    WHISPER_MODEL,
    WHISPER_VAD_FILTER,
    WHISPER_LANGUAGE,
    DEEPGRAM_API_KEY,
    WHISPER_MODEL_AUTO_UPDATE,
    WHISPER_MODEL_DIR,
    # Retrieval
    RAG_TEMPLATE,
    DEFAULT_RAG_TEMPLATE,
    RAG_FULL_CONTEXT,
    BYPASS_EMBEDDING_AND_RETRIEVAL,
    RAG_EMBEDDING_MODEL,
    RAG_EMBEDDING_MODEL_AUTO_UPDATE,
    RAG_EMBEDDING_MODEL_TRUST_REMOTE_CODE,
    RAG_RERANKING_ENGINE,
    RAG_RERANKING_MODEL,
    RAG_EXTERNAL_RERANKER_URL,
    RAG_EXTERNAL_RERANKER_API_KEY,
    RAG_EXTERNAL_RERANKER_TIMEOUT,
    RAG_RERANKING_MODEL_AUTO_UPDATE,
    RAG_RERANKING_MODEL_TRUST_REMOTE_CODE,
    RAG_EMBEDDING_ENGINE,
    RAG_EMBEDDING_BATCH_SIZE,
    ENABLE_ASYNC_EMBEDDING,
    RAG_TOP_K,
    RAG_TOP_K_RERANKER,
    RAG_RELEVANCE_THRESHOLD,
    RAG_HYBRID_BM25_WEIGHT,
    RAG_ALLOWED_FILE_EXTENSIONS,
    RAG_FILE_MAX_COUNT,
    RAG_FILE_MAX_SIZE,
    FILE_IMAGE_COMPRESSION_WIDTH,
    FILE_IMAGE_COMPRESSION_HEIGHT,
    RAG_OPENAI_API_BASE_URL,
    RAG_OPENAI_API_KEY,
    RAG_AZURE_OPENAI_BASE_URL,
    RAG_AZURE_OPENAI_API_KEY,
    RAG_AZURE_OPENAI_API_VERSION,
    RAG_OLLAMA_BASE_URL,
    RAG_OLLAMA_API_KEY,
    CHUNK_OVERLAP,
    CHUNK_MIN_SIZE_TARGET,
    CHUNK_SIZE,
    CONTENT_EXTRACTION_ENGINE,
    DATALAB_MARKER_API_KEY,
    DATALAB_MARKER_API_BASE_URL,
    DATALAB_MARKER_ADDITIONAL_CONFIG,
    DATALAB_MARKER_SKIP_CACHE,
    DATALAB_MARKER_FORCE_OCR,
    DATALAB_MARKER_PAGINATE,
    DATALAB_MARKER_STRIP_EXISTING_OCR,
    DATALAB_MARKER_DISABLE_IMAGE_EXTRACTION,
    DATALAB_MARKER_FORMAT_LINES,
    DATALAB_MARKER_OUTPUT_FORMAT,
    MINERU_API_MODE,
    MINERU_API_URL,
    MINERU_API_KEY,
    MINERU_API_TIMEOUT,
    MINERU_PARAMS,
    DATALAB_MARKER_USE_LLM,
    EXTERNAL_DOCUMENT_LOADER_URL,
    EXTERNAL_DOCUMENT_LOADER_API_KEY,
    TIKA_SERVER_URL,
    DOCLING_SERVER_URL,
    DOCLING_API_KEY,
    DOCLING_PARAMS,
    DOCUMENT_INTELLIGENCE_ENDPOINT,
    DOCUMENT_INTELLIGENCE_KEY,
    DOCUMENT_INTELLIGENCE_MODEL,
    MISTRAL_OCR_API_BASE_URL,
    MISTRAL_OCR_API_KEY,
    RAG_TEXT_SPLITTER,
    ENABLE_MARKDOWN_HEADER_TEXT_SPLITTER,
    TIKTOKEN_ENCODING_NAME,
    PDF_EXTRACT_IMAGES,
    PDF_LOADER_MODE,
    YOUTUBE_LOADER_LANGUAGE,
    YOUTUBE_LOADER_PROXY_URL,
    # Retrieval (Web Search)
    ENABLE_WEB_SEARCH,
    WEB_SEARCH_ENGINE,
    BYPASS_WEB_SEARCH_EMBEDDING_AND_RETRIEVAL,
    BYPASS_WEB_SEARCH_WEB_LOADER,
    WEB_SEARCH_RESULT_COUNT,
    WEB_SEARCH_CONCURRENT_REQUESTS,
    WEB_SEARCH_TRUST_ENV,
    WEB_SEARCH_DOMAIN_FILTER_LIST,
    OLLAMA_CLOUD_WEB_SEARCH_API_KEY,
    JINA_API_KEY,
    JINA_API_BASE_URL,
    SEARCHAPI_API_KEY,
    SEARCHAPI_ENGINE,
    SERPAPI_API_KEY,
    SERPAPI_ENGINE,
    SEARXNG_QUERY_URL,
    SEARXNG_LANGUAGE,
    YACY_QUERY_URL,
    YACY_USERNAME,
    YACY_PASSWORD,
    SERPER_API_KEY,
    SERPLY_API_KEY,
    DDGS_BACKEND,
    SERPSTACK_API_KEY,
    SERPSTACK_HTTPS,
    TAVILY_API_KEY,
    TAVILY_EXTRACT_DEPTH,
    BING_SEARCH_V7_ENDPOINT,
    BING_SEARCH_V7_SUBSCRIPTION_KEY,
    BRAVE_SEARCH_API_KEY,
    EXA_API_KEY,
    PERPLEXITY_API_KEY,
    PERPLEXITY_MODEL,
    PERPLEXITY_SEARCH_CONTEXT_USAGE,
    PERPLEXITY_SEARCH_API_URL,
    SOUGOU_API_SID,
    SOUGOU_API_SK,
    KAGI_SEARCH_API_KEY,
    MOJEEK_SEARCH_API_KEY,
    BOCHA_SEARCH_API_KEY,
    GOOGLE_PSE_API_KEY,
    GOOGLE_PSE_ENGINE_ID,
    GOOGLE_DRIVE_CLIENT_ID,
    GOOGLE_DRIVE_API_KEY,
    ENABLE_ONEDRIVE_INTEGRATION,
    ONEDRIVE_CLIENT_ID_PERSONAL,
    ONEDRIVE_CLIENT_ID_BUSINESS,
    ONEDRIVE_SHAREPOINT_URL,
    ONEDRIVE_SHAREPOINT_TENANT_ID,
    ENABLE_ONEDRIVE_PERSONAL,
    ENABLE_ONEDRIVE_BUSINESS,
    ENABLE_RAG_HYBRID_SEARCH,
    ENABLE_RAG_HYBRID_SEARCH_ENRICHED_TEXTS,
    ENABLE_RAG_LOCAL_WEB_FETCH,
    ENABLE_WEB_LOADER_SSL_VERIFICATION,
    ENABLE_GOOGLE_DRIVE_INTEGRATION,
    UPLOAD_DIR,
    EXTERNAL_WEB_SEARCH_URL,
    EXTERNAL_WEB_SEARCH_API_KEY,
    EXTERNAL_WEB_LOADER_URL,
    EXTERNAL_WEB_LOADER_API_KEY,
    YANDEX_WEB_SEARCH_URL,
    YANDEX_WEB_SEARCH_API_KEY,
    YANDEX_WEB_SEARCH_CONFIG,
    # WebUI
    WEBUI_AUTH,
    WEBUI_NAME,
    WEBUI_BANNERS,
    WEBHOOK_URL,
    ADMIN_EMAIL,
    SHOW_ADMIN_DETAILS,
    JWT_EXPIRES_IN,
    ENABLE_SIGNUP,
    ENABLE_LOGIN_FORM,
    ENABLE_API_KEYS,
    ENABLE_API_KEYS_ENDPOINT_RESTRICTIONS,
    API_KEYS_ALLOWED_ENDPOINTS,
    ENABLE_FOLDERS,
    FOLDER_MAX_FILE_COUNT,
    ENABLE_CHANNELS,
    ENABLE_NOTES,
    ENABLE_USER_STATUS,
    ENABLE_COMMUNITY_SHARING,
    ENABLE_MESSAGE_RATING,
    ENABLE_USER_WEBHOOKS,
    ENABLE_EVALUATION_ARENA_MODELS,
    BYPASS_ADMIN_ACCESS_CONTROL,
    USER_PERMISSIONS,
    DEFAULT_USER_ROLE,
    DEFAULT_GROUP_ID,
    PENDING_USER_OVERLAY_CONTENT,
    PENDING_USER_OVERLAY_TITLE,
    DEFAULT_PROMPT_SUGGESTIONS,
    DEFAULT_MODELS,
    DEFAULT_PINNED_MODELS,
    DEFAULT_ARENA_MODEL,
    MODEL_ORDER_LIST,
    EVALUATION_ARENA_MODELS,
    # WebUI (OAuth)
    ENABLE_OAUTH_ROLE_MANAGEMENT,
    OAUTH_ROLES_CLAIM,
    OAUTH_EMAIL_CLAIM,
    OAUTH_PICTURE_CLAIM,
    OAUTH_USERNAME_CLAIM,
    OAUTH_ALLOWED_ROLES,
    OAUTH_ADMIN_ROLES,
    # WebUI (LDAP)
    ENABLE_LDAP,
    LDAP_SERVER_LABEL,
    LDAP_SERVER_HOST,
    LDAP_SERVER_PORT,
    LDAP_ATTRIBUTE_FOR_MAIL,
    LDAP_ATTRIBUTE_FOR_USERNAME,
    LDAP_SEARCH_FILTERS,
    LDAP_SEARCH_BASE,
    LDAP_APP_DN,
    LDAP_APP_PASSWORD,
    LDAP_USE_TLS,
    LDAP_CA_CERT_FILE,
    LDAP_VALIDATE_CERT,
    LDAP_CIPHERS,
    # LDAP Group Management
    ENABLE_LDAP_GROUP_MANAGEMENT,
    ENABLE_LDAP_GROUP_CREATION,
    LDAP_ATTRIBUTE_FOR_GROUPS,
    # Misc
    ENV,
    CACHE_DIR,
    STATIC_DIR,
    FRONTEND_BUILD_DIR,
    CORS_ALLOW_ORIGIN,
    DEFAULT_LOCALE,
    OAUTH_PROVIDERS,
    WEBUI_URL,
    RESPONSE_WATERMARK,
    # Admin
    ENABLE_ADMIN_CHAT_ACCESS,
    BYPASS_ADMIN_ACCESS_CONTROL,
    ENABLE_ADMIN_EXPORT,
    # Tasks
    TASK_MODEL,
    TASK_MODEL_EXTERNAL,
    ENABLE_TAGS_GENERATION,
    ENABLE_TITLE_GENERATION,
    ENABLE_FOLLOW_UP_GENERATION,
    ENABLE_SEARCH_QUERY_GENERATION,
    ENABLE_RETRIEVAL_QUERY_GENERATION,
    ENABLE_AUTOCOMPLETE_GENERATION,
    TITLE_GENERATION_PROMPT_TEMPLATE,
    FOLLOW_UP_GENERATION_PROMPT_TEMPLATE,
    TAGS_GENERATION_PROMPT_TEMPLATE,
    IMAGE_PROMPT_GENERATION_PROMPT_TEMPLATE,
    TOOLS_FUNCTION_CALLING_PROMPT_TEMPLATE,
    VOICE_MODE_PROMPT_TEMPLATE,
    QUERY_GENERATION_PROMPT_TEMPLATE,
    AUTOCOMPLETE_GENERATION_PROMPT_TEMPLATE,
    AUTOCOMPLETE_GENERATION_INPUT_MAX_LENGTH,
    AppConfig,
    reset_config,
)
from open_webui.env import (
    ENABLE_CUSTOM_MODEL_FALLBACK,
    LICENSE_KEY,
    AUDIT_EXCLUDED_PATHS,
    AUDIT_LOG_LEVEL,
    CHANGELOG,
    REDIS_URL,
    REDIS_CLUSTER,
    REDIS_KEY_PREFIX,
    REDIS_SENTINEL_HOSTS,
    REDIS_SENTINEL_PORT,
    GLOBAL_LOG_LEVEL,
    MAX_BODY_LOG_SIZE,
    SAFE_MODE,
    VERSION,
    DEPLOYMENT_ID,
    INSTANCE_ID,
    WEBUI_BUILD_HASH,
    WEBUI_SECRET_KEY,
    WEBUI_SESSION_COOKIE_SAME_SITE,
    WEBUI_SESSION_COOKIE_SECURE,
    ENABLE_SIGNUP_PASSWORD_CONFIRMATION,
    WEBUI_AUTH_TRUSTED_EMAIL_HEADER,
    WEBUI_AUTH_TRUSTED_NAME_HEADER,
    WEBUI_AUTH_SIGNOUT_REDIRECT_URL,
    # SCIM
    ENABLE_SCIM,
    SCIM_TOKEN,
    ENABLE_COMPRESSION_MIDDLEWARE,
    ENABLE_WEBSOCKET_SUPPORT,
    BYPASS_MODEL_ACCESS_CONTROL,
    RESET_CONFIG_ON_START,
    ENABLE_VERSION_UPDATE_CHECK,
    ENABLE_OTEL,
    EXTERNAL_PWA_MANIFEST_URL,
    AIOHTTP_CLIENT_SESSION_SSL,
    ENABLE_STAR_SESSIONS_MIDDLEWARE,
    ENABLE_PUBLIC_ACTIVE_USERS_COUNT,
    # Admin Account Runtime Creation
    WEBUI_ADMIN_EMAIL,
    WEBUI_ADMIN_PASSWORD,
    WEBUI_ADMIN_NAME,
    ENABLE_EASTER_EGGS,
)


from open_webui.utils.models import (
    get_all_models,
    get_all_base_models,
    check_model_access,
    get_filtered_models,
)
from open_webui.utils.chat import (
    generate_chat_completion as chat_completion_handler,
    chat_completed as chat_completed_handler,
)
from open_webui.utils.actions import chat_action as chat_action_handler
from open_webui.utils.embeddings import generate_embeddings
from open_webui.utils.middleware import (
    build_chat_response_context,
    process_chat_payload,
    process_chat_response,
)
from open_webui.utils.tools import set_tool_servers

from open_webui.utils.auth import (
    get_license_data,
    get_http_authorization_cred,
    decode_token,
    get_admin_user,
    get_verified_user,
    create_admin_user,
)
from open_webui.utils.plugin import install_tool_and_function_dependencies
from open_webui.utils.oauth import (
    get_oauth_client_info_with_dynamic_client_registration,
    encrypt_data,
    decrypt_data,
    OAuthManager,
    OAuthClientManager,
    OAuthClientInformationFull,
)
from open_webui.utils.security_headers import SecurityHeadersMiddleware
from open_webui.utils.redis import get_redis_connection

from open_webui.tasks import (
    redis_task_command_listener,
    list_task_ids_by_item_id,
    create_task,
    stop_task,
    list_tasks,
)  # Import from tasks.py

from open_webui.utils.redis import get_sentinels_from_env


from open_webui.constants import ERROR_MESSAGES

if SAFE_MODE:
    print("SAFE MODE ENABLED")
    Functions.deactivate_all_functions()

logging.basicConfig(stream=sys.stdout, level=GLOBAL_LOG_LEVEL)
log = logging.getLogger(__name__)


class SPAStaticFiles(StaticFiles):
    async def get_response(self, path: str, scope):
        try:
            return await super().get_response(path, scope)
        except (HTTPException, StarletteHTTPException) as ex:
            if ex.status_code == 404:
                if path.endswith(".js"):
                    # Return 404 for javascript files
                    raise ex
                else:
                    return await super().get_response("index.html", scope)
            else:
                raise ex


print(rf"""
 ██████╗ ██████╗ ███████╗███╗   ██╗    ██╗    ██╗███████╗██████╗ ██╗   ██╗██╗
██╔═══██╗██╔══██╗██╔════╝████╗  ██║    ██║    ██║██╔════╝██╔══██╗██║   ██║██║
██║   ██║██████╔╝█████╗  ██╔██╗ ██║    ██║ █╗ ██║█████╗  ██████╔╝██║   ██║██║
██║   ██║██╔═══╝ ██╔══╝  ██║╚██╗██║    ██║███╗██║██╔══╝  ██╔══██╗██║   ██║██║
╚██████╔╝██║     ███████╗██║ ╚████║    ╚███╔███╔╝███████╗██████╔╝╚██████╔╝██║
 ╚═════╝ ╚═╝     ╚══════╝╚═╝  ╚═══╝     ╚══╝╚══╝ ╚══════╝╚═════╝  ╚═════╝ ╚═╝


v{VERSION} - building the best AI user interface.
{f"Commit: {WEBUI_BUILD_HASH}" if WEBUI_BUILD_HASH != "dev-build" else ""}
https://github.com/open-webui/open-webui
""")


@asynccontextmanager
async def lifespan(app: FastAPI):
    # Store reference to main event loop for sync->async calls (e.g., embedding generation)
    # This allows sync functions to schedule work on the main loop without blocking health checks
    app.state.main_loop = asyncio.get_running_loop()

    app.state.instance_id = INSTANCE_ID
    start_logger()

    if RESET_CONFIG_ON_START:
        reset_config()

    if LICENSE_KEY:
        get_license_data(app, LICENSE_KEY)

    # Create admin account from env vars if specified and no users exist
    if WEBUI_ADMIN_EMAIL and WEBUI_ADMIN_PASSWORD:
        if create_admin_user(WEBUI_ADMIN_EMAIL, WEBUI_ADMIN_PASSWORD, WEBUI_ADMIN_NAME):
            # Disable signup since we now have an admin
            app.state.config.ENABLE_SIGNUP = False

    # This should be blocking (sync) so functions are not deactivated on first /get_models calls
    # when the first user lands on the / route.
    log.info("Installing external dependencies of functions and tools...")
    install_tool_and_function_dependencies()

    app.state.redis = get_redis_connection(
        redis_url=REDIS_URL,
        redis_sentinels=get_sentinels_from_env(
            REDIS_SENTINEL_HOSTS, REDIS_SENTINEL_PORT
        ),
        redis_cluster=REDIS_CLUSTER,
        async_mode=True,
    )

    if app.state.redis is not None:
        app.state.redis_task_command_listener = asyncio.create_task(
            redis_task_command_listener(app)
        )

    if THREAD_POOL_SIZE and THREAD_POOL_SIZE > 0:
        limiter = anyio.to_thread.current_default_thread_limiter()
        limiter.total_tokens = THREAD_POOL_SIZE

    asyncio.create_task(periodic_usage_pool_cleanup())
    asyncio.create_task(periodic_session_pool_cleanup())

    if app.state.config.ENABLE_BASE_MODELS_CACHE:
        try:
            await get_all_models(
                Request(
                    # Creating a mock request object to pass to get_all_models
                    {
                        "type": "http",
                        "asgi.version": "3.0",
                        "asgi.spec_version": "2.0",
                        "method": "GET",
                        "path": "/internal",
                        "query_string": b"",
                        "headers": Headers({}).raw,
                        "client": ("127.0.0.1", 12345),
                        "server": ("127.0.0.1", 80),
                        "scheme": "http",
                        "app": app,
                    }
                ),
                None,
            )
        except Exception as e:
            log.warning(f"Failed to pre-fetch models at startup: {e}")

    # Pre-fetch tool server specs so the first request doesn't pay the latency cost
    if len(app.state.config.TOOL_SERVER_CONNECTIONS) > 0:
        log.info("Initializing tool servers...")
        try:
            mock_request = Request(
                {
                    "type": "http",
                    "asgi.version": "3.0",
                    "asgi.spec_version": "2.0",
                    "method": "GET",
                    "path": "/internal",
                    "query_string": b"",
                    "headers": Headers({}).raw,
                    "client": ("127.0.0.1", 12345),
                    "server": ("127.0.0.1", 80),
                    "scheme": "http",
                    "app": app,
                }
            )
            await set_tool_servers(mock_request)
            log.info(f"Initialized {len(app.state.TOOL_SERVERS)} tool server(s)")
        except Exception as e:
            log.warning(f"Failed to initialize tool servers at startup: {e}")

    yield

    if hasattr(app.state, "redis_task_command_listener"):
        app.state.redis_task_command_listener.cancel()


app = FastAPI(
    title="Open WebUI",
    docs_url="/docs" if ENV == "dev" else None,
    openapi_url="/openapi.json" if ENV == "dev" else None,
    redoc_url=None,
    lifespan=lifespan,
)

# For Open WebUI OIDC/OAuth2
oauth_manager = OAuthManager(app)
app.state.oauth_manager = oauth_manager

# For Integrations
oauth_client_manager = OAuthClientManager(app)
app.state.oauth_client_manager = oauth_client_manager

app.state.instance_id = None
app.state.config = AppConfig(
    redis_url=REDIS_URL,
    redis_sentinels=get_sentinels_from_env(REDIS_SENTINEL_HOSTS, REDIS_SENTINEL_PORT),
    redis_cluster=REDIS_CLUSTER,
    redis_key_prefix=REDIS_KEY_PREFIX,
)
app.state.redis = None

app.state.WEBUI_NAME = WEBUI_NAME
app.state.LICENSE_METADATA = None


########################################
#
# OPENTELEMETRY
#
########################################

if ENABLE_OTEL:
    from open_webui.utils.telemetry.setup import setup as setup_opentelemetry

    setup_opentelemetry(app=app, db_engine=engine)


########################################
#
# OLLAMA
#
########################################


app.state.config.ENABLE_OLLAMA_API = ENABLE_OLLAMA_API
app.state.config.OLLAMA_BASE_URLS = OLLAMA_BASE_URLS
app.state.config.OLLAMA_API_CONFIGS = OLLAMA_API_CONFIGS

app.state.OLLAMA_MODELS = {}

########################################
#
# OPENAI
#
########################################

app.state.config.ENABLE_OPENAI_API = ENABLE_OPENAI_API
app.state.config.OPENAI_API_BASE_URLS = OPENAI_API_BASE_URLS
app.state.config.OPENAI_API_KEYS = OPENAI_API_KEYS
app.state.config.OPENAI_API_CONFIGS = OPENAI_API_CONFIGS

app.state.OPENAI_MODELS = {}

########################################
#
# TOOL SERVERS
#
########################################

app.state.config.TOOL_SERVER_CONNECTIONS = TOOL_SERVER_CONNECTIONS
app.state.TOOL_SERVERS = []

########################################
#
# DIRECT CONNECTIONS
#
########################################

app.state.config.ENABLE_DIRECT_CONNECTIONS = ENABLE_DIRECT_CONNECTIONS

########################################
#
# SCIM
#
########################################

app.state.ENABLE_SCIM = ENABLE_SCIM
app.state.SCIM_TOKEN = SCIM_TOKEN

########################################
#
# MODELS
#
########################################

app.state.config.ENABLE_BASE_MODELS_CACHE = ENABLE_BASE_MODELS_CACHE
app.state.BASE_MODELS = []

########################################
#
# WEBUI
#
########################################

app.state.config.WEBUI_URL = WEBUI_URL
app.state.config.ENABLE_SIGNUP = ENABLE_SIGNUP
app.state.config.ENABLE_LOGIN_FORM = ENABLE_LOGIN_FORM

app.state.config.ENABLE_API_KEYS = ENABLE_API_KEYS
app.state.config.ENABLE_API_KEYS_ENDPOINT_RESTRICTIONS = (
    ENABLE_API_KEYS_ENDPOINT_RESTRICTIONS
)
app.state.config.API_KEYS_ALLOWED_ENDPOINTS = API_KEYS_ALLOWED_ENDPOINTS

app.state.config.JWT_EXPIRES_IN = JWT_EXPIRES_IN

app.state.config.SHOW_ADMIN_DETAILS = SHOW_ADMIN_DETAILS
app.state.config.ADMIN_EMAIL = ADMIN_EMAIL


app.state.config.DEFAULT_MODELS = DEFAULT_MODELS
app.state.config.DEFAULT_PINNED_MODELS = DEFAULT_PINNED_MODELS
app.state.config.MODEL_ORDER_LIST = MODEL_ORDER_LIST


app.state.config.DEFAULT_PROMPT_SUGGESTIONS = DEFAULT_PROMPT_SUGGESTIONS
app.state.config.DEFAULT_USER_ROLE = DEFAULT_USER_ROLE
app.state.config.DEFAULT_GROUP_ID = DEFAULT_GROUP_ID

app.state.config.PENDING_USER_OVERLAY_CONTENT = PENDING_USER_OVERLAY_CONTENT
app.state.config.PENDING_USER_OVERLAY_TITLE = PENDING_USER_OVERLAY_TITLE

app.state.config.RESPONSE_WATERMARK = RESPONSE_WATERMARK

app.state.config.USER_PERMISSIONS = USER_PERMISSIONS
app.state.config.WEBHOOK_URL = WEBHOOK_URL
app.state.config.BANNERS = WEBUI_BANNERS


app.state.config.ENABLE_FOLDERS = ENABLE_FOLDERS
app.state.config.FOLDER_MAX_FILE_COUNT = FOLDER_MAX_FILE_COUNT
app.state.config.ENABLE_CHANNELS = ENABLE_CHANNELS
app.state.config.ENABLE_NOTES = ENABLE_NOTES
app.state.config.ENABLE_COMMUNITY_SHARING = ENABLE_COMMUNITY_SHARING
app.state.config.ENABLE_MESSAGE_RATING = ENABLE_MESSAGE_RATING
app.state.config.ENABLE_USER_WEBHOOKS = ENABLE_USER_WEBHOOKS
app.state.config.ENABLE_USER_STATUS = ENABLE_USER_STATUS

app.state.config.ENABLE_EVALUATION_ARENA_MODELS = ENABLE_EVALUATION_ARENA_MODELS
app.state.config.EVALUATION_ARENA_MODELS = EVALUATION_ARENA_MODELS

# Migrate legacy access_control → access_grants on boot
from open_webui.utils.access_control import migrate_access_control

connections = app.state.config.TOOL_SERVER_CONNECTIONS
if any("access_control" in c.get("config", {}) for c in connections):
    for connection in connections:
        migrate_access_control(connection.get("config", {}))
    app.state.config.TOOL_SERVER_CONNECTIONS = connections

arena_models = app.state.config.EVALUATION_ARENA_MODELS
if any("access_control" in m.get("meta", {}) for m in arena_models):
    for model in arena_models:
        migrate_access_control(model.get("meta", {}))
    app.state.config.EVALUATION_ARENA_MODELS = arena_models

app.state.config.OAUTH_USERNAME_CLAIM = OAUTH_USERNAME_CLAIM
app.state.config.OAUTH_PICTURE_CLAIM = OAUTH_PICTURE_CLAIM
app.state.config.OAUTH_EMAIL_CLAIM = OAUTH_EMAIL_CLAIM

app.state.config.ENABLE_OAUTH_ROLE_MANAGEMENT = ENABLE_OAUTH_ROLE_MANAGEMENT
app.state.config.OAUTH_ROLES_CLAIM = OAUTH_ROLES_CLAIM
app.state.config.OAUTH_ALLOWED_ROLES = OAUTH_ALLOWED_ROLES
app.state.config.OAUTH_ADMIN_ROLES = OAUTH_ADMIN_ROLES

app.state.config.ENABLE_LDAP = ENABLE_LDAP
app.state.config.LDAP_SERVER_LABEL = LDAP_SERVER_LABEL
app.state.config.LDAP_SERVER_HOST = LDAP_SERVER_HOST
app.state.config.LDAP_SERVER_PORT = LDAP_SERVER_PORT
app.state.config.LDAP_ATTRIBUTE_FOR_MAIL = LDAP_ATTRIBUTE_FOR_MAIL
app.state.config.LDAP_ATTRIBUTE_FOR_USERNAME = LDAP_ATTRIBUTE_FOR_USERNAME
app.state.config.LDAP_APP_DN = LDAP_APP_DN
app.state.config.LDAP_APP_PASSWORD = LDAP_APP_PASSWORD
app.state.config.LDAP_SEARCH_BASE = LDAP_SEARCH_BASE
app.state.config.LDAP_SEARCH_FILTERS = LDAP_SEARCH_FILTERS
app.state.config.LDAP_USE_TLS = LDAP_USE_TLS
app.state.config.LDAP_CA_CERT_FILE = LDAP_CA_CERT_FILE
app.state.config.LDAP_VALIDATE_CERT = LDAP_VALIDATE_CERT
app.state.config.LDAP_CIPHERS = LDAP_CIPHERS

# For LDAP Group Management
app.state.config.ENABLE_LDAP_GROUP_MANAGEMENT = ENABLE_LDAP_GROUP_MANAGEMENT
app.state.config.ENABLE_LDAP_GROUP_CREATION = ENABLE_LDAP_GROUP_CREATION
app.state.config.LDAP_ATTRIBUTE_FOR_GROUPS = LDAP_ATTRIBUTE_FOR_GROUPS


app.state.AUTH_TRUSTED_EMAIL_HEADER = WEBUI_AUTH_TRUSTED_EMAIL_HEADER
app.state.AUTH_TRUSTED_NAME_HEADER = WEBUI_AUTH_TRUSTED_NAME_HEADER
app.state.WEBUI_AUTH_SIGNOUT_REDIRECT_URL = WEBUI_AUTH_SIGNOUT_REDIRECT_URL
app.state.EXTERNAL_PWA_MANIFEST_URL = EXTERNAL_PWA_MANIFEST_URL

app.state.USER_COUNT = None

app.state.TOOLS = {}
app.state.TOOL_CONTENTS = {}

app.state.FUNCTIONS = {}
app.state.FUNCTION_CONTENTS = {}

########################################
#
# RETRIEVAL
#
########################################


app.state.config.TOP_K = RAG_TOP_K
app.state.config.TOP_K_RERANKER = RAG_TOP_K_RERANKER
app.state.config.RELEVANCE_THRESHOLD = RAG_RELEVANCE_THRESHOLD
app.state.config.HYBRID_BM25_WEIGHT = RAG_HYBRID_BM25_WEIGHT


app.state.config.ALLOWED_FILE_EXTENSIONS = RAG_ALLOWED_FILE_EXTENSIONS
app.state.config.FILE_MAX_SIZE = RAG_FILE_MAX_SIZE
app.state.config.FILE_MAX_COUNT = RAG_FILE_MAX_COUNT
app.state.config.FILE_IMAGE_COMPRESSION_WIDTH = FILE_IMAGE_COMPRESSION_WIDTH
app.state.config.FILE_IMAGE_COMPRESSION_HEIGHT = FILE_IMAGE_COMPRESSION_HEIGHT


app.state.config.RAG_FULL_CONTEXT = RAG_FULL_CONTEXT
app.state.config.BYPASS_EMBEDDING_AND_RETRIEVAL = BYPASS_EMBEDDING_AND_RETRIEVAL
app.state.config.ENABLE_RAG_HYBRID_SEARCH = ENABLE_RAG_HYBRID_SEARCH
app.state.config.ENABLE_RAG_HYBRID_SEARCH_ENRICHED_TEXTS = (
    ENABLE_RAG_HYBRID_SEARCH_ENRICHED_TEXTS
)
app.state.config.ENABLE_WEB_LOADER_SSL_VERIFICATION = ENABLE_WEB_LOADER_SSL_VERIFICATION

app.state.config.CONTENT_EXTRACTION_ENGINE = CONTENT_EXTRACTION_ENGINE
app.state.config.DATALAB_MARKER_API_KEY = DATALAB_MARKER_API_KEY
app.state.config.DATALAB_MARKER_API_BASE_URL = DATALAB_MARKER_API_BASE_URL
app.state.config.DATALAB_MARKER_ADDITIONAL_CONFIG = DATALAB_MARKER_ADDITIONAL_CONFIG
app.state.config.DATALAB_MARKER_SKIP_CACHE = DATALAB_MARKER_SKIP_CACHE
app.state.config.DATALAB_MARKER_FORCE_OCR = DATALAB_MARKER_FORCE_OCR
app.state.config.DATALAB_MARKER_PAGINATE = DATALAB_MARKER_PAGINATE
app.state.config.DATALAB_MARKER_STRIP_EXISTING_OCR = DATALAB_MARKER_STRIP_EXISTING_OCR
app.state.config.DATALAB_MARKER_DISABLE_IMAGE_EXTRACTION = (
    DATALAB_MARKER_DISABLE_IMAGE_EXTRACTION
)
app.state.config.DATALAB_MARKER_FORMAT_LINES = DATALAB_MARKER_FORMAT_LINES
app.state.config.DATALAB_MARKER_USE_LLM = DATALAB_MARKER_USE_LLM
app.state.config.DATALAB_MARKER_OUTPUT_FORMAT = DATALAB_MARKER_OUTPUT_FORMAT
app.state.config.EXTERNAL_DOCUMENT_LOADER_URL = EXTERNAL_DOCUMENT_LOADER_URL
app.state.config.EXTERNAL_DOCUMENT_LOADER_API_KEY = EXTERNAL_DOCUMENT_LOADER_API_KEY
app.state.config.TIKA_SERVER_URL = TIKA_SERVER_URL
app.state.config.DOCLING_SERVER_URL = DOCLING_SERVER_URL
app.state.config.DOCLING_API_KEY = DOCLING_API_KEY
app.state.config.DOCLING_PARAMS = DOCLING_PARAMS
app.state.config.DOCUMENT_INTELLIGENCE_ENDPOINT = DOCUMENT_INTELLIGENCE_ENDPOINT
app.state.config.DOCUMENT_INTELLIGENCE_KEY = DOCUMENT_INTELLIGENCE_KEY
app.state.config.DOCUMENT_INTELLIGENCE_MODEL = DOCUMENT_INTELLIGENCE_MODEL
app.state.config.MISTRAL_OCR_API_BASE_URL = MISTRAL_OCR_API_BASE_URL
app.state.config.MISTRAL_OCR_API_KEY = MISTRAL_OCR_API_KEY
app.state.config.MINERU_API_MODE = MINERU_API_MODE
app.state.config.MINERU_API_URL = MINERU_API_URL
app.state.config.MINERU_API_KEY = MINERU_API_KEY
app.state.config.MINERU_API_TIMEOUT = MINERU_API_TIMEOUT
app.state.config.MINERU_PARAMS = MINERU_PARAMS

app.state.config.TEXT_SPLITTER = RAG_TEXT_SPLITTER
app.state.config.ENABLE_MARKDOWN_HEADER_TEXT_SPLITTER = (
    ENABLE_MARKDOWN_HEADER_TEXT_SPLITTER
)

app.state.config.TIKTOKEN_ENCODING_NAME = TIKTOKEN_ENCODING_NAME

app.state.config.CHUNK_SIZE = CHUNK_SIZE
app.state.config.CHUNK_MIN_SIZE_TARGET = CHUNK_MIN_SIZE_TARGET
app.state.config.CHUNK_OVERLAP = CHUNK_OVERLAP


app.state.config.RAG_EMBEDDING_ENGINE = RAG_EMBEDDING_ENGINE
app.state.config.RAG_EMBEDDING_MODEL = RAG_EMBEDDING_MODEL
app.state.config.RAG_EMBEDDING_BATCH_SIZE = RAG_EMBEDDING_BATCH_SIZE
app.state.config.ENABLE_ASYNC_EMBEDDING = ENABLE_ASYNC_EMBEDDING

app.state.config.RAG_RERANKING_ENGINE = RAG_RERANKING_ENGINE
app.state.config.RAG_RERANKING_MODEL = RAG_RERANKING_MODEL
app.state.config.RAG_EXTERNAL_RERANKER_URL = RAG_EXTERNAL_RERANKER_URL
app.state.config.RAG_EXTERNAL_RERANKER_API_KEY = RAG_EXTERNAL_RERANKER_API_KEY
app.state.config.RAG_EXTERNAL_RERANKER_TIMEOUT = RAG_EXTERNAL_RERANKER_TIMEOUT

app.state.config.RAG_TEMPLATE = RAG_TEMPLATE

app.state.config.RAG_OPENAI_API_BASE_URL = RAG_OPENAI_API_BASE_URL
app.state.config.RAG_OPENAI_API_KEY = RAG_OPENAI_API_KEY

app.state.config.RAG_AZURE_OPENAI_BASE_URL = RAG_AZURE_OPENAI_BASE_URL
app.state.config.RAG_AZURE_OPENAI_API_KEY = RAG_AZURE_OPENAI_API_KEY
app.state.config.RAG_AZURE_OPENAI_API_VERSION = RAG_AZURE_OPENAI_API_VERSION

app.state.config.RAG_OLLAMA_BASE_URL = RAG_OLLAMA_BASE_URL
app.state.config.RAG_OLLAMA_API_KEY = RAG_OLLAMA_API_KEY

app.state.config.PDF_EXTRACT_IMAGES = PDF_EXTRACT_IMAGES
app.state.config.PDF_LOADER_MODE = PDF_LOADER_MODE

app.state.config.YOUTUBE_LOADER_LANGUAGE = YOUTUBE_LOADER_LANGUAGE
app.state.config.YOUTUBE_LOADER_PROXY_URL = YOUTUBE_LOADER_PROXY_URL


app.state.config.ENABLE_WEB_SEARCH = ENABLE_WEB_SEARCH
app.state.config.WEB_SEARCH_ENGINE = WEB_SEARCH_ENGINE
app.state.config.WEB_SEARCH_DOMAIN_FILTER_LIST = WEB_SEARCH_DOMAIN_FILTER_LIST
app.state.config.WEB_SEARCH_RESULT_COUNT = WEB_SEARCH_RESULT_COUNT
app.state.config.WEB_SEARCH_CONCURRENT_REQUESTS = WEB_SEARCH_CONCURRENT_REQUESTS

app.state.config.WEB_LOADER_ENGINE = WEB_LOADER_ENGINE
app.state.config.WEB_LOADER_CONCURRENT_REQUESTS = WEB_LOADER_CONCURRENT_REQUESTS
app.state.config.WEB_LOADER_TIMEOUT = WEB_LOADER_TIMEOUT

app.state.config.WEB_SEARCH_TRUST_ENV = WEB_SEARCH_TRUST_ENV
app.state.config.BYPASS_WEB_SEARCH_EMBEDDING_AND_RETRIEVAL = (
    BYPASS_WEB_SEARCH_EMBEDDING_AND_RETRIEVAL
)
app.state.config.BYPASS_WEB_SEARCH_WEB_LOADER = BYPASS_WEB_SEARCH_WEB_LOADER

app.state.config.ENABLE_GOOGLE_DRIVE_INTEGRATION = ENABLE_GOOGLE_DRIVE_INTEGRATION
app.state.config.ENABLE_ONEDRIVE_INTEGRATION = ENABLE_ONEDRIVE_INTEGRATION

app.state.config.OLLAMA_CLOUD_WEB_SEARCH_API_KEY = OLLAMA_CLOUD_WEB_SEARCH_API_KEY
app.state.config.SEARXNG_QUERY_URL = SEARXNG_QUERY_URL
app.state.config.SEARXNG_LANGUAGE = SEARXNG_LANGUAGE
app.state.config.YACY_QUERY_URL = YACY_QUERY_URL
app.state.config.YACY_USERNAME = YACY_USERNAME
app.state.config.YACY_PASSWORD = YACY_PASSWORD
app.state.config.GOOGLE_PSE_API_KEY = GOOGLE_PSE_API_KEY
app.state.config.GOOGLE_PSE_ENGINE_ID = GOOGLE_PSE_ENGINE_ID
app.state.config.BRAVE_SEARCH_API_KEY = BRAVE_SEARCH_API_KEY
app.state.config.KAGI_SEARCH_API_KEY = KAGI_SEARCH_API_KEY
app.state.config.MOJEEK_SEARCH_API_KEY = MOJEEK_SEARCH_API_KEY
app.state.config.BOCHA_SEARCH_API_KEY = BOCHA_SEARCH_API_KEY
app.state.config.SERPSTACK_API_KEY = SERPSTACK_API_KEY
app.state.config.SERPSTACK_HTTPS = SERPSTACK_HTTPS
app.state.config.SERPER_API_KEY = SERPER_API_KEY
app.state.config.SERPLY_API_KEY = SERPLY_API_KEY
app.state.config.DDGS_BACKEND = DDGS_BACKEND
app.state.config.TAVILY_API_KEY = TAVILY_API_KEY
app.state.config.SEARCHAPI_API_KEY = SEARCHAPI_API_KEY
app.state.config.SEARCHAPI_ENGINE = SEARCHAPI_ENGINE
app.state.config.SERPAPI_API_KEY = SERPAPI_API_KEY
app.state.config.SERPAPI_ENGINE = SERPAPI_ENGINE
app.state.config.JINA_API_KEY = JINA_API_KEY
app.state.config.JINA_API_BASE_URL = JINA_API_BASE_URL
app.state.config.BING_SEARCH_V7_ENDPOINT = BING_SEARCH_V7_ENDPOINT
app.state.config.BING_SEARCH_V7_SUBSCRIPTION_KEY = BING_SEARCH_V7_SUBSCRIPTION_KEY
app.state.config.EXA_API_KEY = EXA_API_KEY
app.state.config.PERPLEXITY_API_KEY = PERPLEXITY_API_KEY
app.state.config.PERPLEXITY_MODEL = PERPLEXITY_MODEL
app.state.config.PERPLEXITY_SEARCH_CONTEXT_USAGE = PERPLEXITY_SEARCH_CONTEXT_USAGE
app.state.config.PERPLEXITY_SEARCH_API_URL = PERPLEXITY_SEARCH_API_URL
app.state.config.SOUGOU_API_SID = SOUGOU_API_SID
app.state.config.SOUGOU_API_SK = SOUGOU_API_SK
app.state.config.EXTERNAL_WEB_SEARCH_URL = EXTERNAL_WEB_SEARCH_URL
app.state.config.EXTERNAL_WEB_SEARCH_API_KEY = EXTERNAL_WEB_SEARCH_API_KEY
app.state.config.EXTERNAL_WEB_LOADER_URL = EXTERNAL_WEB_LOADER_URL
app.state.config.EXTERNAL_WEB_LOADER_API_KEY = EXTERNAL_WEB_LOADER_API_KEY
app.state.config.YANDEX_WEB_SEARCH_URL = YANDEX_WEB_SEARCH_URL
app.state.config.YANDEX_WEB_SEARCH_API_KEY = YANDEX_WEB_SEARCH_API_KEY
app.state.config.YANDEX_WEB_SEARCH_CONFIG = YANDEX_WEB_SEARCH_CONFIG


app.state.config.PLAYWRIGHT_WS_URL = PLAYWRIGHT_WS_URL
app.state.config.PLAYWRIGHT_TIMEOUT = PLAYWRIGHT_TIMEOUT
app.state.config.FIRECRAWL_API_BASE_URL = FIRECRAWL_API_BASE_URL
app.state.config.FIRECRAWL_API_KEY = FIRECRAWL_API_KEY
app.state.config.FIRECRAWL_TIMEOUT = FIRECRAWL_TIMEOUT
app.state.config.TAVILY_EXTRACT_DEPTH = TAVILY_EXTRACT_DEPTH

app.state.EMBEDDING_FUNCTION = None
app.state.RERANKING_FUNCTION = None
app.state.ef = None
app.state.rf = None

app.state.YOUTUBE_LOADER_TRANSLATION = None


try:
    app.state.ef = get_ef(
        app.state.config.RAG_EMBEDDING_ENGINE, app.state.config.RAG_EMBEDDING_MODEL
    )
    if (
        app.state.config.ENABLE_RAG_HYBRID_SEARCH
        and not app.state.config.BYPASS_EMBEDDING_AND_RETRIEVAL
    ):
        app.state.rf = get_rf(
            app.state.config.RAG_RERANKING_ENGINE,
            app.state.config.RAG_RERANKING_MODEL,
            app.state.config.RAG_EXTERNAL_RERANKER_URL,
            app.state.config.RAG_EXTERNAL_RERANKER_API_KEY,
            app.state.config.RAG_EXTERNAL_RERANKER_TIMEOUT,
        )
    else:
        app.state.rf = None
except Exception as e:
    log.error(f"Error updating models: {e}")
    pass


app.state.EMBEDDING_FUNCTION = get_embedding_function(
    app.state.config.RAG_EMBEDDING_ENGINE,
    app.state.config.RAG_EMBEDDING_MODEL,
    embedding_function=app.state.ef,
    url=(
        app.state.config.RAG_OPENAI_API_BASE_URL
        if app.state.config.RAG_EMBEDDING_ENGINE == "openai"
        else (
            app.state.config.RAG_OLLAMA_BASE_URL
            if app.state.config.RAG_EMBEDDING_ENGINE == "ollama"
            else app.state.config.RAG_AZURE_OPENAI_BASE_URL
        )
    ),
    key=(
        app.state.config.RAG_OPENAI_API_KEY
        if app.state.config.RAG_EMBEDDING_ENGINE == "openai"
        else (
            app.state.config.RAG_OLLAMA_API_KEY
            if app.state.config.RAG_EMBEDDING_ENGINE == "ollama"
            else app.state.config.RAG_AZURE_OPENAI_API_KEY
        )
    ),
    embedding_batch_size=app.state.config.RAG_EMBEDDING_BATCH_SIZE,
    azure_api_version=(
        app.state.config.RAG_AZURE_OPENAI_API_VERSION
        if app.state.config.RAG_EMBEDDING_ENGINE == "azure_openai"
        else None
    ),
    enable_async=app.state.config.ENABLE_ASYNC_EMBEDDING,
)

app.state.RERANKING_FUNCTION = get_reranking_function(
    app.state.config.RAG_RERANKING_ENGINE,
    app.state.config.RAG_RERANKING_MODEL,
    reranking_function=app.state.rf,
)

########################################
#
# CODE EXECUTION
#
########################################

app.state.config.ENABLE_CODE_EXECUTION = ENABLE_CODE_EXECUTION
app.state.config.CODE_EXECUTION_ENGINE = CODE_EXECUTION_ENGINE
app.state.config.CODE_EXECUTION_JUPYTER_URL = CODE_EXECUTION_JUPYTER_URL
app.state.config.CODE_EXECUTION_JUPYTER_AUTH = CODE_EXECUTION_JUPYTER_AUTH
app.state.config.CODE_EXECUTION_JUPYTER_AUTH_TOKEN = CODE_EXECUTION_JUPYTER_AUTH_TOKEN
app.state.config.CODE_EXECUTION_JUPYTER_AUTH_PASSWORD = (
    CODE_EXECUTION_JUPYTER_AUTH_PASSWORD
)
app.state.config.CODE_EXECUTION_JUPYTER_TIMEOUT = CODE_EXECUTION_JUPYTER_TIMEOUT

app.state.config.ENABLE_CODE_INTERPRETER = ENABLE_CODE_INTERPRETER
app.state.config.CODE_INTERPRETER_ENGINE = CODE_INTERPRETER_ENGINE
app.state.config.CODE_INTERPRETER_PROMPT_TEMPLATE = CODE_INTERPRETER_PROMPT_TEMPLATE

app.state.config.CODE_INTERPRETER_JUPYTER_URL = CODE_INTERPRETER_JUPYTER_URL
app.state.config.CODE_INTERPRETER_JUPYTER_AUTH = CODE_INTERPRETER_JUPYTER_AUTH
app.state.config.CODE_INTERPRETER_JUPYTER_AUTH_TOKEN = (
    CODE_INTERPRETER_JUPYTER_AUTH_TOKEN
)
app.state.config.CODE_INTERPRETER_JUPYTER_AUTH_PASSWORD = (
    CODE_INTERPRETER_JUPYTER_AUTH_PASSWORD
)
app.state.config.CODE_INTERPRETER_JUPYTER_TIMEOUT = CODE_INTERPRETER_JUPYTER_TIMEOUT

########################################
#
# IMAGES
#
########################################

app.state.config.IMAGE_GENERATION_ENGINE = IMAGE_GENERATION_ENGINE
app.state.config.ENABLE_IMAGE_GENERATION = ENABLE_IMAGE_GENERATION
app.state.config.ENABLE_IMAGE_PROMPT_GENERATION = ENABLE_IMAGE_PROMPT_GENERATION
app.state.config.ENABLE_MEMORIES = ENABLE_MEMORIES

app.state.config.IMAGE_GENERATION_MODEL = IMAGE_GENERATION_MODEL
app.state.config.IMAGE_SIZE = IMAGE_SIZE
app.state.config.IMAGE_STEPS = IMAGE_STEPS

app.state.config.IMAGES_OPENAI_API_BASE_URL = IMAGES_OPENAI_API_BASE_URL
app.state.config.IMAGES_OPENAI_API_VERSION = IMAGES_OPENAI_API_VERSION
app.state.config.IMAGES_OPENAI_API_KEY = IMAGES_OPENAI_API_KEY
app.state.config.IMAGES_OPENAI_API_PARAMS = IMAGES_OPENAI_API_PARAMS

app.state.config.IMAGES_GEMINI_API_BASE_URL = IMAGES_GEMINI_API_BASE_URL
app.state.config.IMAGES_GEMINI_API_KEY = IMAGES_GEMINI_API_KEY
app.state.config.IMAGES_GEMINI_ENDPOINT_METHOD = IMAGES_GEMINI_ENDPOINT_METHOD

app.state.config.AUTOMATIC1111_BASE_URL = AUTOMATIC1111_BASE_URL
app.state.config.AUTOMATIC1111_API_AUTH = AUTOMATIC1111_API_AUTH
app.state.config.AUTOMATIC1111_PARAMS = AUTOMATIC1111_PARAMS

app.state.config.COMFYUI_BASE_URL = COMFYUI_BASE_URL
app.state.config.COMFYUI_API_KEY = COMFYUI_API_KEY
app.state.config.COMFYUI_WORKFLOW = COMFYUI_WORKFLOW
app.state.config.COMFYUI_WORKFLOW_NODES = COMFYUI_WORKFLOW_NODES


app.state.config.ENABLE_IMAGE_EDIT = ENABLE_IMAGE_EDIT
app.state.config.IMAGE_EDIT_ENGINE = IMAGE_EDIT_ENGINE
app.state.config.IMAGE_EDIT_MODEL = IMAGE_EDIT_MODEL
app.state.config.IMAGE_EDIT_SIZE = IMAGE_EDIT_SIZE
app.state.config.IMAGES_EDIT_OPENAI_API_BASE_URL = IMAGES_EDIT_OPENAI_API_BASE_URL
app.state.config.IMAGES_EDIT_OPENAI_API_KEY = IMAGES_EDIT_OPENAI_API_KEY
app.state.config.IMAGES_EDIT_OPENAI_API_VERSION = IMAGES_EDIT_OPENAI_API_VERSION
app.state.config.IMAGES_EDIT_GEMINI_API_BASE_URL = IMAGES_EDIT_GEMINI_API_BASE_URL
app.state.config.IMAGES_EDIT_GEMINI_API_KEY = IMAGES_EDIT_GEMINI_API_KEY
app.state.config.IMAGES_EDIT_COMFYUI_BASE_URL = IMAGES_EDIT_COMFYUI_BASE_URL
app.state.config.IMAGES_EDIT_COMFYUI_API_KEY = IMAGES_EDIT_COMFYUI_API_KEY
app.state.config.IMAGES_EDIT_COMFYUI_WORKFLOW = IMAGES_EDIT_COMFYUI_WORKFLOW
app.state.config.IMAGES_EDIT_COMFYUI_WORKFLOW_NODES = IMAGES_EDIT_COMFYUI_WORKFLOW_NODES


########################################
#
# AUDIO
#
########################################

app.state.config.STT_ENGINE = AUDIO_STT_ENGINE
app.state.config.STT_MODEL = AUDIO_STT_MODEL
app.state.config.STT_SUPPORTED_CONTENT_TYPES = AUDIO_STT_SUPPORTED_CONTENT_TYPES

app.state.config.STT_OPENAI_API_BASE_URL = AUDIO_STT_OPENAI_API_BASE_URL
app.state.config.STT_OPENAI_API_KEY = AUDIO_STT_OPENAI_API_KEY

app.state.config.WHISPER_MODEL = WHISPER_MODEL
app.state.config.DEEPGRAM_API_KEY = DEEPGRAM_API_KEY

app.state.config.AUDIO_STT_AZURE_API_KEY = AUDIO_STT_AZURE_API_KEY
app.state.config.AUDIO_STT_AZURE_REGION = AUDIO_STT_AZURE_REGION
app.state.config.AUDIO_STT_AZURE_LOCALES = AUDIO_STT_AZURE_LOCALES
app.state.config.AUDIO_STT_AZURE_BASE_URL = AUDIO_STT_AZURE_BASE_URL
app.state.config.AUDIO_STT_AZURE_MAX_SPEAKERS = AUDIO_STT_AZURE_MAX_SPEAKERS

app.state.config.AUDIO_STT_MISTRAL_API_KEY = AUDIO_STT_MISTRAL_API_KEY
app.state.config.AUDIO_STT_MISTRAL_API_BASE_URL = AUDIO_STT_MISTRAL_API_BASE_URL
app.state.config.AUDIO_STT_MISTRAL_USE_CHAT_COMPLETIONS = (
    AUDIO_STT_MISTRAL_USE_CHAT_COMPLETIONS
)

app.state.config.TTS_ENGINE = AUDIO_TTS_ENGINE

app.state.config.TTS_MODEL = AUDIO_TTS_MODEL
app.state.config.TTS_VOICE = AUDIO_TTS_VOICE

app.state.config.TTS_OPENAI_API_BASE_URL = AUDIO_TTS_OPENAI_API_BASE_URL
app.state.config.TTS_OPENAI_API_KEY = AUDIO_TTS_OPENAI_API_KEY
app.state.config.TTS_OPENAI_PARAMS = AUDIO_TTS_OPENAI_PARAMS

app.state.config.TTS_API_KEY = AUDIO_TTS_API_KEY
app.state.config.TTS_SPLIT_ON = AUDIO_TTS_SPLIT_ON


app.state.config.TTS_AZURE_SPEECH_REGION = AUDIO_TTS_AZURE_SPEECH_REGION
app.state.config.TTS_AZURE_SPEECH_BASE_URL = AUDIO_TTS_AZURE_SPEECH_BASE_URL
app.state.config.TTS_AZURE_SPEECH_OUTPUT_FORMAT = AUDIO_TTS_AZURE_SPEECH_OUTPUT_FORMAT


app.state.faster_whisper_model = None
app.state.speech_synthesiser = None
app.state.speech_speaker_embeddings_dataset = None


########################################
#
# TASKS
#
########################################


app.state.config.TASK_MODEL = TASK_MODEL
app.state.config.TASK_MODEL_EXTERNAL = TASK_MODEL_EXTERNAL


app.state.config.ENABLE_SEARCH_QUERY_GENERATION = ENABLE_SEARCH_QUERY_GENERATION
app.state.config.ENABLE_RETRIEVAL_QUERY_GENERATION = ENABLE_RETRIEVAL_QUERY_GENERATION
app.state.config.ENABLE_AUTOCOMPLETE_GENERATION = ENABLE_AUTOCOMPLETE_GENERATION
app.state.config.ENABLE_TAGS_GENERATION = ENABLE_TAGS_GENERATION
app.state.config.ENABLE_TITLE_GENERATION = ENABLE_TITLE_GENERATION
app.state.config.ENABLE_FOLLOW_UP_GENERATION = ENABLE_FOLLOW_UP_GENERATION


app.state.config.TITLE_GENERATION_PROMPT_TEMPLATE = TITLE_GENERATION_PROMPT_TEMPLATE
app.state.config.TAGS_GENERATION_PROMPT_TEMPLATE = TAGS_GENERATION_PROMPT_TEMPLATE
app.state.config.IMAGE_PROMPT_GENERATION_PROMPT_TEMPLATE = (
    IMAGE_PROMPT_GENERATION_PROMPT_TEMPLATE
)
app.state.config.FOLLOW_UP_GENERATION_PROMPT_TEMPLATE = (
    FOLLOW_UP_GENERATION_PROMPT_TEMPLATE
)

app.state.config.TOOLS_FUNCTION_CALLING_PROMPT_TEMPLATE = (
    TOOLS_FUNCTION_CALLING_PROMPT_TEMPLATE
)
app.state.config.QUERY_GENERATION_PROMPT_TEMPLATE = QUERY_GENERATION_PROMPT_TEMPLATE
app.state.config.AUTOCOMPLETE_GENERATION_PROMPT_TEMPLATE = (
    AUTOCOMPLETE_GENERATION_PROMPT_TEMPLATE
)
app.state.config.AUTOCOMPLETE_GENERATION_INPUT_MAX_LENGTH = (
    AUTOCOMPLETE_GENERATION_INPUT_MAX_LENGTH
)
app.state.config.VOICE_MODE_PROMPT_TEMPLATE = VOICE_MODE_PROMPT_TEMPLATE


########################################
#
# WEBUI
#
########################################

app.state.MODELS = MODELS

# Add the middleware to the app
if ENABLE_COMPRESSION_MIDDLEWARE:
    app.add_middleware(CompressMiddleware)


class RedirectMiddleware(BaseHTTPMiddleware):
    async def dispatch(self, request: Request, call_next):
        # Check if the request is a GET request
        if request.method == "GET":
            path = request.url.path
            query_params = dict(parse_qs(urlparse(str(request.url)).query))

            redirect_params = {}

            # Check for the specific watch path and the presence of 'v' parameter
            if path.endswith("/watch") and "v" in query_params:
                # Extract the first 'v' parameter
                youtube_video_id = query_params["v"][0]
                redirect_params["youtube"] = youtube_video_id

            if "shared" in query_params and len(query_params["shared"]) > 0:
                # PWA share_target support

                text = query_params["shared"][0]
                if text:
                    urls = re.match(r"https://\S+", text)
                    if urls:
                        from open_webui.retrieval.loaders.youtube import _parse_video_id

                        if youtube_video_id := _parse_video_id(urls[0]):
                            redirect_params["youtube"] = youtube_video_id
                        else:
                            redirect_params["load-url"] = urls[0]
                    else:
                        redirect_params["q"] = text

            if redirect_params:
                redirect_url = f"/?{urlencode(redirect_params)}"
                return RedirectResponse(url=redirect_url)

        # Proceed with the normal flow of other requests
        response = await call_next(request)
        return response


app.add_middleware(RedirectMiddleware)
app.add_middleware(SecurityHeadersMiddleware)


class APIKeyRestrictionMiddleware(BaseHTTPMiddleware):
    async def dispatch(self, request: Request, call_next):
        auth_header = request.headers.get("Authorization")
        token = None

        if auth_header:
            parts = auth_header.split(" ", 1)
            if len(parts) == 2:
                token = parts[1]

        # Only apply restrictions if an sk- API key is used
        if token and token.startswith("sk-"):
            # Check if restrictions are enabled
            if request.app.state.config.ENABLE_API_KEYS_ENDPOINT_RESTRICTIONS:
                allowed_paths = [
                    path.strip()
                    for path in str(
                        request.app.state.config.API_KEYS_ALLOWED_ENDPOINTS
                    ).split(",")
                    if path.strip()
                ]

                request_path = request.url.path

                # Match exact path or prefix path
                is_allowed = any(
                    request_path == allowed or request_path.startswith(allowed + "/")
                    for allowed in allowed_paths
                )

                if not is_allowed:
                    return JSONResponse(
                        status_code=status.HTTP_403_FORBIDDEN,
                        content={
                            "detail": "API key not allowed to access this endpoint."
                        },
                    )

        response = await call_next(request)
        return response


app.add_middleware(APIKeyRestrictionMiddleware)


@app.middleware("http")
async def commit_session_after_request(request: Request, call_next):
    response = await call_next(request)
    # log.debug("Commit session after request")
    try:
        ScopedSession.commit()
    finally:
        # CRITICAL: remove() returns the connection to the pool.
        # Without this, connections remain "checked out" and accumulate
        # as "idle in transaction" in PostgreSQL.
        ScopedSession.remove()
    return response


@app.middleware("http")
async def check_url(request: Request, call_next):
    start_time = int(time.time())
    request.state.token = get_http_authorization_cred(
        request.headers.get("Authorization")
    )
    # Fallback to cookie token for browser sessions
    if request.state.token is None and request.cookies.get("token"):
        from fastapi.security import HTTPAuthorizationCredentials

        request.state.token = HTTPAuthorizationCredentials(
            scheme="Bearer", credentials=request.cookies.get("token")
        )

    request.state.enable_api_keys = app.state.config.ENABLE_API_KEYS
    response = await call_next(request)
    process_time = int(time.time()) - start_time
    response.headers["X-Process-Time"] = str(process_time)
    return response


@app.middleware("http")
async def inspect_websocket(request: Request, call_next):
    if (
        "/ws/socket.io" in request.url.path
        and request.query_params.get("transport") == "websocket"
    ):
        upgrade = (request.headers.get("Upgrade") or "").lower()
        connection = (request.headers.get("Connection") or "").lower().split(",")
        # Check that there's the correct headers for an upgrade, else reject the connection
        # This is to work around this upstream issue: https://github.com/miguelgrinberg/python-engineio/issues/367
        if upgrade != "websocket" or "upgrade" not in connection:
            return JSONResponse(
                status_code=status.HTTP_400_BAD_REQUEST,
                content={"detail": "Invalid WebSocket upgrade request"},
            )
    return await call_next(request)


app.add_middleware(
    CORSMiddleware,
    allow_origins=CORS_ALLOW_ORIGIN,
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)


app.mount("/ws", socket_app)


app.include_router(ollama.router, prefix="/ollama", tags=["ollama"])
app.include_router(openai.router, prefix="/openai", tags=["openai"])


app.include_router(pipelines.router, prefix="/api/v1/pipelines", tags=["pipelines"])
app.include_router(tasks.router, prefix="/api/v1/tasks", tags=["tasks"])
app.include_router(images.router, prefix="/api/v1/images", tags=["images"])

app.include_router(audio.router, prefix="/api/v1/audio", tags=["audio"])
app.include_router(retrieval.router, prefix="/api/v1/retrieval", tags=["retrieval"])

app.include_router(configs.router, prefix="/api/v1/configs", tags=["configs"])

app.include_router(auths.router, prefix="/api/v1/auths", tags=["auths"])
app.include_router(users.router, prefix="/api/v1/users", tags=["users"])


app.include_router(channels.router, prefix="/api/v1/channels", tags=["channels"])
app.include_router(chats.router, prefix="/api/v1/chats", tags=["chats"])
app.include_router(notes.router, prefix="/api/v1/notes", tags=["notes"])


app.include_router(models.router, prefix="/api/v1/models", tags=["models"])
app.include_router(knowledge.router, prefix="/api/v1/knowledge", tags=["knowledge"])
app.include_router(prompts.router, prefix="/api/v1/prompts", tags=["prompts"])
app.include_router(tools.router, prefix="/api/v1/tools", tags=["tools"])
app.include_router(skills.router, prefix="/api/v1/skills", tags=["skills"])

app.include_router(memories.router, prefix="/api/v1/memories", tags=["memories"])
app.include_router(folders.router, prefix="/api/v1/folders", tags=["folders"])
app.include_router(groups.router, prefix="/api/v1/groups", tags=["groups"])
app.include_router(files.router, prefix="/api/v1/files", tags=["files"])
app.include_router(functions.router, prefix="/api/v1/functions", tags=["functions"])
app.include_router(
    evaluations.router, prefix="/api/v1/evaluations", tags=["evaluations"]
)
app.include_router(analytics.router, prefix="/api/v1/analytics", tags=["analytics"])
app.include_router(utils.router, prefix="/api/v1/utils", tags=["utils"])

# SCIM 2.0 API for identity management
if ENABLE_SCIM:
    app.include_router(scim.router, prefix="/api/v1/scim/v2", tags=["scim"])


try:
    audit_level = AuditLevel(AUDIT_LOG_LEVEL)
except ValueError as e:
    logger.error(f"Invalid audit level: {AUDIT_LOG_LEVEL}. Error: {e}")
    audit_level = AuditLevel.NONE

if audit_level != AuditLevel.NONE:
    app.add_middleware(
        AuditLoggingMiddleware,
        audit_level=audit_level,
        excluded_paths=AUDIT_EXCLUDED_PATHS,
        max_body_size=MAX_BODY_LOG_SIZE,
    )
##################################
#
# Chat Endpoints
#
##################################


@app.get("/api/models")
@app.get("/api/v1/models")  # Experimental: Compatibility with OpenAI API
async def get_models(
    request: Request, refresh: bool = False, user=Depends(get_verified_user)
):
    all_models = await get_all_models(request, refresh=refresh, user=user)

    models = []
    for model in all_models:
        # Filter out filter pipelines
        if "pipeline" in model and model["pipeline"].get("type", None) == "filter":
            continue

        # Remove profile image URL to reduce payload size
        if model.get("info", {}).get("meta", {}).get("profile_image_url"):
            model["info"]["meta"].pop("profile_image_url", None)

        try:
            model_tags = [
                tag.get("name")
                for tag in model.get("info", {}).get("meta", {}).get("tags", [])
            ]
            tags = [tag.get("name") for tag in model.get("tags", [])]

            tags = list(set(model_tags + tags))
            model["tags"] = [{"name": tag} for tag in tags]
        except Exception as e:
            log.debug(f"Error processing model tags: {e}")
            model["tags"] = []
            pass

        models.append(model)

    model_order_list = request.app.state.config.MODEL_ORDER_LIST
    if model_order_list:
        model_order_dict = {model_id: i for i, model_id in enumerate(model_order_list)}
        # Sort models by order list priority, with fallback for those not in the list
        models.sort(
            key=lambda model: (
                model_order_dict.get(model.get("id", ""), float("inf")),
                (model.get("name", "") or ""),
            )
        )

    models = get_filtered_models(models, user)

    log.debug(
        f"/api/models returned filtered models accessible to the user: {json.dumps([model.get('id') for model in models])}"
    )
    return {"data": models}


@app.get("/api/models/base")
async def get_base_models(request: Request, user=Depends(get_admin_user)):
    models = await get_all_base_models(request, user=user)
    return {"data": models}


##################################
# Embeddings
##################################


@app.post("/api/embeddings")
@app.post("/api/v1/embeddings")  # Experimental: Compatibility with OpenAI API
async def embeddings(
    request: Request, form_data: dict, user=Depends(get_verified_user)
):
    """
    OpenAI-compatible embeddings endpoint.

    This handler:
      - Performs user/model checks and dispatches to the correct backend.
      - Supports OpenAI, Ollama, arena models, pipelines, and any compatible provider.

    Args:
        request (Request): Request context.
        form_data (dict): OpenAI-like payload (e.g., {"model": "...", "input": [...]})
        user (UserModel): Authenticated user.

    Returns:
        dict: OpenAI-compatible embeddings response.
    """
    # Make sure models are loaded in app state
    if not request.app.state.MODELS:
        await get_all_models(request, user=user)
    # Use generic dispatcher in utils.embeddings
    return await generate_embeddings(request, form_data, user)


@app.post("/api/chat/completions")
@app.post("/api/v1/chat/completions")  # Experimental: Compatibility with OpenAI API
async def chat_completion(
    request: Request,
    form_data: dict,
    user=Depends(get_verified_user),
):
    if not request.app.state.MODELS:
        await get_all_models(request, user=user)

    model_id = form_data.get("model", None)
    model_item = form_data.pop("model_item", {})
    tasks = form_data.pop("background_tasks", None)

    metadata = {}
    try:
        model_info = None
        if not model_item.get("direct", False):
            if model_id not in request.app.state.MODELS:
                raise Exception("Model not found")

            model = request.app.state.MODELS[model_id]
            model_info = Models.get_model_by_id(model_id)

            # Check if user has access to the model
            if not BYPASS_MODEL_ACCESS_CONTROL and (
                user.role != "admin" or not BYPASS_ADMIN_ACCESS_CONTROL
            ):
                try:
                    check_model_access(user, model)
                except Exception as e:
                    raise e
        else:
            model = model_item

            request.state.direct = True
            request.state.model = model

        model_info_params = (
            model_info.params.model_dump() if model_info and model_info.params else {}
        )

        # Check base model existence for custom models
        if model_info_params.get("base_model_id"):
            base_model_id = model_info_params.get("base_model_id")
            if base_model_id not in request.app.state.MODELS:
                if ENABLE_CUSTOM_MODEL_FALLBACK:
                    default_models = (
                        request.app.state.config.DEFAULT_MODELS or ""
                    ).split(",")

                    fallback_model_id = (
                        default_models[0].strip() if default_models[0] else None
                    )

                    if fallback_model_id:
                        request.base_model_id = fallback_model_id
                    else:
                        raise Exception("Model not found")
                else:
                    raise Exception("Model not found")

        # Chat Params
        stream_delta_chunk_size = form_data.get("params", {}).get(
            "stream_delta_chunk_size"
        )
        reasoning_tags = form_data.get("params", {}).get("reasoning_tags")

        # Model Params
        if model_info_params.get("stream_response") is not None:
            form_data["stream"] = model_info_params.get("stream_response")

        if model_info_params.get("stream_delta_chunk_size"):
            stream_delta_chunk_size = model_info_params.get("stream_delta_chunk_size")

        if model_info_params.get("reasoning_tags") is not None:
            reasoning_tags = model_info_params.get("reasoning_tags")

        metadata = {
            "user_id": user.id,
            "chat_id": form_data.pop("chat_id", None),
            "message_id": form_data.pop("id", None),
            "parent_message": form_data.pop("parent_message", None),
            "parent_message_id": form_data.pop("parent_id", None),
            "session_id": form_data.pop("session_id", None),
            "filter_ids": form_data.pop("filter_ids", []),
            "tool_ids": form_data.get("tool_ids", None),
            "tool_servers": form_data.pop("tool_servers", None),
            "files": form_data.get("files", None),
            "features": form_data.get("features", {}),
            "variables": form_data.get("variables", {}),
            "model": model,
            "direct": model_item.get("direct", False),
            "params": {
                "stream_delta_chunk_size": stream_delta_chunk_size,
                "reasoning_tags": reasoning_tags,
                "function_calling": (
                    "native"
                    if (
                        form_data.get("params", {}).get("function_calling") == "native"
                        or model_info_params.get("function_calling") == "native"
                    )
                    else "default"
                ),
            },
        }

        if metadata.get("chat_id") and user:
            if not metadata["chat_id"].startswith(
                "local:"
            ):  # temporary chats are not stored

                # Verify chat ownership
                chat = Chats.get_chat_by_id_and_user_id(metadata["chat_id"], user.id)
                if chat is None and user.role != "admin":  # admins can access any chat
                    raise HTTPException(
                        status_code=status.HTTP_404_NOT_FOUND,
                        detail=ERROR_MESSAGES.DEFAULT(),
                    )

                # Insert chat files from parent message if any
                parent_message = metadata.get("parent_message") or {}
                parent_message_files = parent_message.get("files", [])
                if parent_message_files:
                    try:
                        Chats.insert_chat_files(
                            metadata["chat_id"],
                            parent_message.get("id"),
                            [
                                file_item.get("id")
                                for file_item in parent_message_files
                                if file_item.get("type") == "file"
                            ],
                            user.id,
                        )
                    except Exception as e:
                        log.debug(f"Error inserting chat files: {e}")
                        pass

        request.state.metadata = metadata
        form_data["metadata"] = metadata

    except Exception as e:
        log.debug(f"Error processing chat metadata: {e}")
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail=str(e),
        )

    async def process_chat(request, form_data, user, metadata, model):
        try:
            form_data, metadata, events = await process_chat_payload(
                request, form_data, user, metadata, model
            )

            response = await chat_completion_handler(request, form_data, user)
            if metadata.get("chat_id") and metadata.get("message_id"):
                try:
                    if not metadata["chat_id"].startswith("local:"):
                        Chats.upsert_message_to_chat_by_id_and_message_id(
                            metadata["chat_id"],
                            metadata["message_id"],
                            {
                                "parentId": metadata.get("parent_message_id", None),
                                "model": model_id,
                            },
                        )
                except:
                    pass

            ctx = build_chat_response_context(
                request, form_data, user, model, metadata, tasks, events
            )

            return await process_chat_response(response, ctx)
        except asyncio.CancelledError:
            log.info("Chat processing was cancelled")
            try:
                event_emitter = get_event_emitter(metadata)
                await asyncio.shield(
                    event_emitter(
                        {"type": "chat:tasks:cancel"},
                    )
                )
            except Exception as e:
                pass
            finally:
                raise  # re-raise to ensure proper task cancellation handling
        except Exception as e:
            log.debug(f"Error processing chat payload: {e}")
            if metadata.get("chat_id") and metadata.get("message_id"):
                # Update the chat message with the error
                try:
                    if not metadata["chat_id"].startswith("local:"):
                        Chats.upsert_message_to_chat_by_id_and_message_id(
                            metadata["chat_id"],
                            metadata["message_id"],
                            {
                                "parentId": metadata.get("parent_message_id", None),
                                "error": {"content": str(e)},
                            },
                        )

                    event_emitter = get_event_emitter(metadata)
                    await event_emitter(
                        {
                            "type": "chat:message:error",
                            "data": {"error": {"content": str(e)}},
                        }
                    )
                    await event_emitter(
                        {"type": "chat:tasks:cancel"},
                    )

                except:
                    pass
        finally:
            try:
                if mcp_clients := metadata.get("mcp_clients"):
                    for client in reversed(mcp_clients.values()):
                        await client.disconnect()
            except Exception as e:
                log.debug(f"Error cleaning up: {e}")
                pass
            # Emit chat:active=false when task completes
            try:
                if metadata.get("chat_id"):
                    event_emitter = get_event_emitter(metadata, update_db=False)
                    if event_emitter:
                        await event_emitter(
                            {"type": "chat:active", "data": {"active": False}}
                        )
            except Exception as e:
                log.debug(f"Error emitting chat:active: {e}")

    if (
        metadata.get("session_id")
        and metadata.get("chat_id")
        and metadata.get("message_id")
    ):
        # Asynchronous Chat Processing
        task_id, _ = await create_task(
            request.app.state.redis,
            process_chat(request, form_data, user, metadata, model),
            id=metadata["chat_id"],
        )
        # Emit chat:active=true when task starts
        event_emitter = get_event_emitter(metadata, update_db=False)
        if event_emitter:
            await event_emitter({"type": "chat:active", "data": {"active": True}})
        return {"status": True, "task_id": task_id}
    else:
        return await process_chat(request, form_data, user, metadata, model)


# Alias for chat_completion (Legacy)
generate_chat_completions = chat_completion
generate_chat_completion = chat_completion


@app.post("/api/chat/completed")
async def chat_completed(
    request: Request, form_data: dict, user=Depends(get_verified_user)
):
    try:
        model_item = form_data.pop("model_item", {})

        if model_item.get("direct", False):
            request.state.direct = True
            request.state.model = model_item

        return await chat_completed_handler(request, form_data, user)
    except Exception as e:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail=str(e),
        )


@app.post("/api/chat/actions/{action_id}")
async def chat_action(
    request: Request, action_id: str, form_data: dict, user=Depends(get_verified_user)
):
    try:
        model_item = form_data.pop("model_item", {})

        if model_item.get("direct", False):
            request.state.direct = True
            request.state.model = model_item

        return await chat_action_handler(request, action_id, form_data, user)
    except Exception as e:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail=str(e),
        )


@app.post("/api/tasks/stop/{task_id}")
async def stop_task_endpoint(
    request: Request, task_id: str, user=Depends(get_verified_user)
):
    try:
        result = await stop_task(request.app.state.redis, task_id)
        return result
    except ValueError as e:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=str(e))


@app.get("/api/tasks")
async def list_tasks_endpoint(request: Request, user=Depends(get_verified_user)):
    return {"tasks": await list_tasks(request.app.state.redis)}


@app.get("/api/tasks/chat/{chat_id}")
async def list_tasks_by_chat_id_endpoint(
    request: Request, chat_id: str, user=Depends(get_verified_user)
):
    chat = Chats.get_chat_by_id(chat_id)
    if chat is None or chat.user_id != user.id:
        return {"task_ids": []}

    task_ids = await list_task_ids_by_item_id(request.app.state.redis, chat_id)

    log.debug(f"Task IDs for chat {chat_id}: {task_ids}")
    return {"task_ids": task_ids}


##################################
#
# Config Endpoints
#
##################################


@app.get("/api/config")
async def get_app_config(request: Request):
    user = None
    token = None

    auth_header = request.headers.get("Authorization")
    if auth_header:
        cred = get_http_authorization_cred(auth_header)
        if cred:
            token = cred.credentials

    if not token and "token" in request.cookies:
        token = request.cookies.get("token")

    if token:
        try:
            data = decode_token(token)
        except Exception as e:
            log.debug(e)
            raise HTTPException(
                status_code=status.HTTP_401_UNAUTHORIZED,
                detail="Invalid token",
            )
        if data is not None and "id" in data:
            user = Users.get_user_by_id(data["id"])

    user_count = Users.get_num_users()
    onboarding = False

    if user is None:
        onboarding = user_count == 0

    return {
        **({"onboarding": True} if onboarding else {}),
        "status": True,
        "name": app.state.WEBUI_NAME,
        "version": VERSION,
        "default_locale": str(DEFAULT_LOCALE),
        "oauth": {
            "providers": {
                name: config.get("name", name)
                for name, config in OAUTH_PROVIDERS.items()
            }
        },
        "features": {
            "auth": WEBUI_AUTH,
            "auth_trusted_header": bool(app.state.AUTH_TRUSTED_EMAIL_HEADER),
            "enable_signup_password_confirmation": ENABLE_SIGNUP_PASSWORD_CONFIRMATION,
            "enable_ldap": app.state.config.ENABLE_LDAP,
            "enable_api_keys": app.state.config.ENABLE_API_KEYS,
            "enable_signup": app.state.config.ENABLE_SIGNUP,
            "enable_login_form": app.state.config.ENABLE_LOGIN_FORM,
            "enable_websocket": ENABLE_WEBSOCKET_SUPPORT,
            "enable_version_update_check": ENABLE_VERSION_UPDATE_CHECK,
            "enable_public_active_users_count": ENABLE_PUBLIC_ACTIVE_USERS_COUNT,
            "enable_easter_eggs": ENABLE_EASTER_EGGS,
            **(
                {
                    "enable_direct_connections": app.state.config.ENABLE_DIRECT_CONNECTIONS,
                    "enable_folders": app.state.config.ENABLE_FOLDERS,
                    "folder_max_file_count": app.state.config.FOLDER_MAX_FILE_COUNT,
                    "enable_channels": app.state.config.ENABLE_CHANNELS,
                    "enable_notes": app.state.config.ENABLE_NOTES,
                    "enable_web_search": app.state.config.ENABLE_WEB_SEARCH,
                    "enable_code_execution": app.state.config.ENABLE_CODE_EXECUTION,
                    "enable_code_interpreter": app.state.config.ENABLE_CODE_INTERPRETER,
                    "enable_image_generation": app.state.config.ENABLE_IMAGE_GENERATION,
                    "enable_autocomplete_generation": app.state.config.ENABLE_AUTOCOMPLETE_GENERATION,
                    "enable_community_sharing": app.state.config.ENABLE_COMMUNITY_SHARING,
                    "enable_message_rating": app.state.config.ENABLE_MESSAGE_RATING,
                    "enable_user_webhooks": app.state.config.ENABLE_USER_WEBHOOKS,
                    "enable_user_status": app.state.config.ENABLE_USER_STATUS,
                    "enable_admin_export": ENABLE_ADMIN_EXPORT,
                    "enable_admin_chat_access": ENABLE_ADMIN_CHAT_ACCESS,
                    "enable_google_drive_integration": app.state.config.ENABLE_GOOGLE_DRIVE_INTEGRATION,
                    "enable_onedrive_integration": app.state.config.ENABLE_ONEDRIVE_INTEGRATION,
                    "enable_memories": app.state.config.ENABLE_MEMORIES,
                    **(
                        {
                            "enable_onedrive_personal": ENABLE_ONEDRIVE_PERSONAL,
                            "enable_onedrive_business": ENABLE_ONEDRIVE_BUSINESS,
                        }
                        if app.state.config.ENABLE_ONEDRIVE_INTEGRATION
                        else {}
                    ),
                }
                if user is not None
                else {}
            ),
        },
        **(
            {
                "default_models": app.state.config.DEFAULT_MODELS,
                "default_pinned_models": app.state.config.DEFAULT_PINNED_MODELS,
                "default_prompt_suggestions": app.state.config.DEFAULT_PROMPT_SUGGESTIONS,
                "user_count": user_count,
                "code": {
                    "engine": app.state.config.CODE_EXECUTION_ENGINE,
                },
                "audio": {
                    "tts": {
                        "engine": app.state.config.TTS_ENGINE,
                        "voice": app.state.config.TTS_VOICE,
                        "split_on": app.state.config.TTS_SPLIT_ON,
                    },
                    "stt": {
                        "engine": app.state.config.STT_ENGINE,
                    },
                },
                "file": {
                    "max_size": app.state.config.FILE_MAX_SIZE,
                    "max_count": app.state.config.FILE_MAX_COUNT,
                    "image_compression": {
                        "width": app.state.config.FILE_IMAGE_COMPRESSION_WIDTH,
                        "height": app.state.config.FILE_IMAGE_COMPRESSION_HEIGHT,
                    },
                },
                "permissions": {**app.state.config.USER_PERMISSIONS},
                "google_drive": {
                    "client_id": GOOGLE_DRIVE_CLIENT_ID.value,
                    "api_key": GOOGLE_DRIVE_API_KEY.value,
                },
                "onedrive": {
                    "client_id_personal": ONEDRIVE_CLIENT_ID_PERSONAL,
                    "client_id_business": ONEDRIVE_CLIENT_ID_BUSINESS,
                    "sharepoint_url": ONEDRIVE_SHAREPOINT_URL.value,
                    "sharepoint_tenant_id": ONEDRIVE_SHAREPOINT_TENANT_ID.value,
                },
                "ui": {
                    "pending_user_overlay_title": app.state.config.PENDING_USER_OVERLAY_TITLE,
                    "pending_user_overlay_content": app.state.config.PENDING_USER_OVERLAY_CONTENT,
                    "response_watermark": app.state.config.RESPONSE_WATERMARK,
                },
                "license_metadata": app.state.LICENSE_METADATA,
                **(
                    {
                        "active_entries": app.state.USER_COUNT,
                    }
                    if user.role == "admin"
                    else {}
                ),
            }
            if user is not None and (user.role in ["admin", "user"])
            else {
                **(
                    {
                        "ui": {
                            "pending_user_overlay_title": app.state.config.PENDING_USER_OVERLAY_TITLE,
                            "pending_user_overlay_content": app.state.config.PENDING_USER_OVERLAY_CONTENT,
                        }
                    }
                    if user and user.role == "pending"
                    else {}
                ),
                **(
                    {
                        "metadata": {
                            "login_footer": app.state.LICENSE_METADATA.get(
                                "login_footer", ""
                            ),
                            "auth_logo_position": app.state.LICENSE_METADATA.get(
                                "auth_logo_position", ""
                            ),
                        }
                    }
                    if app.state.LICENSE_METADATA
                    else {}
                ),
            }
        ),
    }


class UrlForm(BaseModel):
    url: str


@app.get("/api/webhook")
async def get_webhook_url(user=Depends(get_admin_user)):
    return {
        "url": app.state.config.WEBHOOK_URL,
    }


@app.post("/api/webhook")
async def update_webhook_url(form_data: UrlForm, user=Depends(get_admin_user)):
    app.state.config.WEBHOOK_URL = form_data.url
    app.state.WEBHOOK_URL = app.state.config.WEBHOOK_URL
    return {"url": app.state.config.WEBHOOK_URL}


@app.get("/api/version")
async def get_app_version():
    return {
        "version": VERSION,
        "deployment_id": DEPLOYMENT_ID,
    }


@app.get("/api/version/updates")
async def get_app_latest_release_version(user=Depends(get_verified_user)):
    if not ENABLE_VERSION_UPDATE_CHECK:
        log.debug(
            f"Version update check is disabled, returning current version as latest version"
        )
        return {"current": VERSION, "latest": VERSION}
    try:
        timeout = aiohttp.ClientTimeout(total=1)
        async with aiohttp.ClientSession(timeout=timeout, trust_env=True) as session:
            async with session.get(
                "https://api.github.com/repos/open-webui/open-webui/releases/latest",
                ssl=AIOHTTP_CLIENT_SESSION_SSL,
            ) as response:
                response.raise_for_status()
                data = await response.json()
                latest_version = data["tag_name"]

                return {"current": VERSION, "latest": latest_version[1:]}
    except Exception as e:
        log.debug(e)
        return {"current": VERSION, "latest": VERSION}


@app.get("/api/changelog")
async def get_app_changelog():
    return {key: CHANGELOG[key] for idx, key in enumerate(CHANGELOG) if idx < 5}


@app.get("/api/usage")
async def get_current_usage(user=Depends(get_verified_user)):
    """
    Get current usage statistics for Open WebUI.
    This is an experimental endpoint and subject to change.
    """
    try:
        # If public visibility is disabled, only allow admins to access this endpoint
        if not ENABLE_PUBLIC_ACTIVE_USERS_COUNT and user.role != "admin":
            raise HTTPException(
                status_code=status.HTTP_403_FORBIDDEN,
                detail="Access denied. Only administrators can view usage statistics.",
            )

        return {
            "model_ids": get_models_in_use(),
            "user_count": Users.get_active_user_count(),
        }
    except HTTPException:
        raise
    except Exception as e:
        log.error(f"Error getting usage statistics: {e}")
        raise HTTPException(status_code=500, detail="Internal Server Error")


############################
# OAuth Login & Callback
############################


# Initialize OAuth client manager with any MCP tool servers using OAuth 2.1
if len(app.state.config.TOOL_SERVER_CONNECTIONS) > 0:
    for tool_server_connection in app.state.config.TOOL_SERVER_CONNECTIONS:
        if tool_server_connection.get("type", "openapi") == "mcp":
            server_id = tool_server_connection.get("info", {}).get("id")
            auth_type = tool_server_connection.get("auth_type", "none")

            if server_id and auth_type == "oauth_2.1":
                oauth_client_info = tool_server_connection.get("info", {}).get(
                    "oauth_client_info", ""
                )

                try:
                    oauth_client_info = decrypt_data(oauth_client_info)
                    app.state.oauth_client_manager.add_client(
                        f"mcp:{server_id}",
                        OAuthClientInformationFull(**oauth_client_info),
                    )
                except Exception as e:
                    log.error(
                        f"Error adding OAuth client for MCP tool server {server_id}: {e}"
                    )
                    pass

try:
    if ENABLE_STAR_SESSIONS_MIDDLEWARE:
        redis_session_store = RedisStore(
            url=REDIS_URL,
            prefix=(f"{REDIS_KEY_PREFIX}:session:" if REDIS_KEY_PREFIX else "session:"),
        )

        app.add_middleware(SessionAutoloadMiddleware)
        app.add_middleware(
            StarSessionsMiddleware,
            store=redis_session_store,
            cookie_name="owui-session",
            cookie_same_site=WEBUI_SESSION_COOKIE_SAME_SITE,
            cookie_https_only=WEBUI_SESSION_COOKIE_SECURE,
        )
        log.info("Using Redis for session")
    else:
        raise ValueError("No Redis URL provided")
except Exception as e:
    app.add_middleware(
        SessionMiddleware,
        secret_key=WEBUI_SECRET_KEY,
        session_cookie="owui-session",
        same_site=WEBUI_SESSION_COOKIE_SAME_SITE,
        https_only=WEBUI_SESSION_COOKIE_SECURE,
    )


async def register_client(request, client_id: str) -> bool:
    server_type, server_id = client_id.split(":", 1)

    connection = None
    connection_idx = None

    for idx, conn in enumerate(request.app.state.config.TOOL_SERVER_CONNECTIONS or []):
        if conn.get("type", "openapi") == server_type:
            info = conn.get("info", {})
            if info.get("id") == server_id:
                connection = conn
                connection_idx = idx
                break

    if connection is None or connection_idx is None:
        log.warning(
            f"Unable to locate MCP tool server configuration for client {client_id} during re-registration"
        )
        return False

    server_url = connection.get("url")
    oauth_server_key = (connection.get("config") or {}).get("oauth_server_key")

    try:
        oauth_client_info = (
            await get_oauth_client_info_with_dynamic_client_registration(
                request,
                client_id,
                server_url,
                oauth_server_key,
            )
        )
    except Exception as e:
        log.error(f"Dynamic client re-registration failed for {client_id}: {e}")
        return False

    try:
        request.app.state.config.TOOL_SERVER_CONNECTIONS[connection_idx] = {
            **connection,
            "info": {
                **connection.get("info", {}),
                "oauth_client_info": encrypt_data(
                    oauth_client_info.model_dump(mode="json")
                ),
            },
        }
    except Exception as e:
        log.error(
            f"Failed to persist updated OAuth client info for tool server {client_id}: {e}"
        )
        return False

    oauth_client_manager.remove_client(client_id)
    oauth_client_manager.add_client(client_id, oauth_client_info)
    log.info(f"Re-registered OAuth client {client_id} for tool server")
    return True


@app.get("/oauth/clients/{client_id}/authorize")
async def oauth_client_authorize(
    client_id: str,
    request: Request,
    response: Response,
    user=Depends(get_verified_user),
):
    # ensure_valid_client_registration
    client = oauth_client_manager.get_client(client_id)
    client_info = oauth_client_manager.get_client_info(client_id)
    if client is None or client_info is None:
        raise HTTPException(status.HTTP_404_NOT_FOUND)

    if not await oauth_client_manager._preflight_authorization_url(client, client_info):
        log.info(
            "Detected invalid OAuth client %s; attempting re-registration",
            client_id,
        )

        registered = await register_client(request, client_id)
        if not registered:
            raise HTTPException(
                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
                detail="Failed to re-register OAuth client",
            )

        client = oauth_client_manager.get_client(client_id)
        client_info = oauth_client_manager.get_client_info(client_id)
        if client is None or client_info is None:
            raise HTTPException(
                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
                detail="OAuth client unavailable after re-registration",
            )

        if not await oauth_client_manager._preflight_authorization_url(
            client, client_info
        ):
            raise HTTPException(
                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
                detail="OAuth client registration is still invalid after re-registration",
            )

    return await oauth_client_manager.handle_authorize(request, client_id=client_id)


@app.get("/oauth/clients/{client_id}/callback")
async def oauth_client_callback(
    client_id: str,
    request: Request,
    response: Response,
    user=Depends(get_verified_user),
):
    return await oauth_client_manager.handle_callback(
        request,
        client_id=client_id,
        user_id=user.id if user else None,
        response=response,
    )


@app.get("/oauth/{provider}/login")
async def oauth_login(provider: str, request: Request):
    return await oauth_manager.handle_login(request, provider)


# OAuth login logic is as follows:
# 1. Attempt to find a user with matching subject ID, tied to the provider
# 2. If OAUTH_MERGE_ACCOUNTS_BY_EMAIL is true, find a user with the email address provided via OAuth
#    - This is considered insecure in general, as OAuth providers do not always verify email addresses
# 3. If there is no user, and ENABLE_OAUTH_SIGNUP is true, create a user
#    - Email addresses are considered unique, so we fail registration if the email address is already taken
@app.get("/oauth/{provider}/login/callback")
@app.get("/oauth/{provider}/callback")  # Legacy endpoint
async def oauth_login_callback(
    provider: str,
    request: Request,
    response: Response,
    db: Session = Depends(get_session),
):
    return await oauth_manager.handle_callback(request, provider, response, db=db)


@app.get("/manifest.json")
async def get_manifest_json():
    if app.state.EXTERNAL_PWA_MANIFEST_URL:
        return requests.get(app.state.EXTERNAL_PWA_MANIFEST_URL).json()
    else:
        return {
            "name": app.state.WEBUI_NAME,
            "short_name": app.state.WEBUI_NAME,
            "description": f"{app.state.WEBUI_NAME} is an open, extensible, user-friendly interface for AI that adapts to your workflow.",
            "start_url": "/",
            "display": "standalone",
            "background_color": "#343541",
            "icons": [
                {
                    "src": "/static/logo.png",
                    "type": "image/png",
                    "sizes": "500x500",
                    "purpose": "any",
                },
                {
                    "src": "/static/logo.png",
                    "type": "image/png",
                    "sizes": "500x500",
                    "purpose": "maskable",
                },
            ],
            "share_target": {
                "action": "/",
                "method": "GET",
                "params": {"text": "shared"},
            },
        }


@app.get("/opensearch.xml")
async def get_opensearch_xml():
    xml_content = rf"""
    <OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/" xmlns:moz="http://www.mozilla.org/2006/browser/search/">
    <ShortName>{app.state.WEBUI_NAME}</ShortName>
    <Description>Search {app.state.WEBUI_NAME}</Description>
    <InputEncoding>UTF-8</InputEncoding>
    <Image width="16" height="16" type="image/x-icon">{app.state.config.WEBUI_URL}/static/favicon.png</Image>
    <Url type="text/html" method="get" template="{app.state.config.WEBUI_URL}/?q={"{searchTerms}"}"/>
    <moz:SearchForm>{app.state.config.WEBUI_URL}</moz:SearchForm>
    </OpenSearchDescription>
    """
    return Response(content=xml_content, media_type="application/xml")


@app.get("/health")
async def healthcheck():
    return {"status": True}


@app.get("/health/db")
async def healthcheck_with_db():
    ScopedSession.execute(text("SELECT 1;")).all()
    return {"status": True}


app.mount("/static", StaticFiles(directory=STATIC_DIR), name="static")


@app.get("/cache/{path:path}")
async def serve_cache_file(
    path: str,
    user=Depends(get_verified_user),
):
    file_path = os.path.abspath(os.path.join(CACHE_DIR, path))
    # prevent path traversal
    if not file_path.startswith(os.path.abspath(CACHE_DIR)):
        raise HTTPException(status_code=404, detail="File not found")
    if not os.path.isfile(file_path):
        raise HTTPException(status_code=404, detail="File not found")
    return FileResponse(file_path)


def swagger_ui_html(*args, **kwargs):
    return get_swagger_ui_html(
        *args,
        **kwargs,
        swagger_js_url="/static/swagger-ui/swagger-ui-bundle.js",
        swagger_css_url="/static/swagger-ui/swagger-ui.css",
        swagger_favicon_url="/static/swagger-ui/favicon.png",
    )


applications.get_swagger_ui_html = swagger_ui_html

if os.path.exists(FRONTEND_BUILD_DIR):
    mimetypes.add_type("text/javascript", ".js")
    app.mount(
        "/",
        SPAStaticFiles(directory=FRONTEND_BUILD_DIR, html=True),
        name="spa-static-files",
    )
else:
    log.warning(
        f"Frontend build directory not found at '{FRONTEND_BUILD_DIR}'. Serving API only."
    )