import httpx
import logging
from fastapi import FastAPI, HTTPException
from fastapi.middleware.cors import CORSMiddleware
from typing import List, Optional, Dict, Any
from pydantic import BaseModel

# --- Configuration ---
VEGA_API_BASE = "https://sanch1tx-vega-providers.hf.space"
MODFLIX_JSON_URL = "https://raw.githubusercontent.com/himanshu8443/providers/main/modflix.json"

# --- Provider ID Mappings (Critical Fix) ---
# Map 'name' or incorrect 'value' from JSON to the actual folder name on the server
PROVIDER_ID_MAP = {
    "vegamovies": "vega",
    "moviesmod": "mod",
    "uhdmovies": "uhd",
    "moviesdrive": "drive",
    "luxmovies": "luxMovies", # Case sensitive? matches folder name
    "topmovies": "topmovies", # matches folder
    "nfmirror": "netflixMirror",
    "primemirror": "primeMirror",
    "tokyoinsider": "tokyoInsider",
    "skymovieshd": "skyMovieHD",
    "moviebox": "movieBox",
    "cinevood": "1cinevood",
    "kmmovies": "kmMovies",
    "katmoviefix": "katMovieFix",
    "joya9tv1": "Joya9tv",
    "cinewood": "1cinevood"
}

# --- Hardcoded Fallback Catalogs ---
DEFAULT_CATALOGS = {
    "drive": [
        {"title": "Latest", "filter": ""},
        {"title": "Anime", "filter": "category/anime/"},
        {"title": "Netflix", "filter": "category/netflix/"},
        {"title": "4K", "filter": "category/2160p-4k/"},
    ],
    "vega": [
        {"title": "New", "filter": ""},
        {"title": "Netflix", "filter": "web-series/netflix"},
        {"title": "Amazon Prime", "filter": "web-series/amazon-prime-video"},
    ],
    "default": [
        {"title": "Latest", "filter": ""},
        {"title": "Trending", "filter": "trending"},
    ]
}

# Fallback providers
FALLBACK_PROVIDERS = [
    {"name": "Vega", "value": "vega", "baseUrl": VEGA_API_BASE, "isActive": True},
    {"name": "UHD", "value": "uhd", "baseUrl": VEGA_API_BASE, "isActive": True},
    {"name": "Drive", "value": "drive", "baseUrl": VEGA_API_BASE, "isActive": True},
    {"name": "Movies4u", "value": "movies4u", "baseUrl": VEGA_API_BASE, "isActive": True},
]

app = FastAPI(title="Vega Providers Gateway")

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

logging.basicConfig(level=logging.INFO)
logger = logging.getLogger("vega_gateway")

class ProviderModel(BaseModel):
    name: str
    value: str
    baseUrl: str
    isActive: bool

@app.get("/")
async def root():
    return {"status": "ok", "message": "Vega Python Gateway Active"}

@app.get("/providers", response_model=List[ProviderModel])
async def get_providers():
    async with httpx.AsyncClient() as client:
        try:
            response = await client.get(MODFLIX_JSON_URL, timeout=4.0)
            if response.status_code == 200:
                data = response.json()
                providers = []
                
                raw_list = data if isinstance(data, list) else data.get("providers", [])
                
                for p in raw_list:
                    if isinstance(p, dict):
                        name = p.get("name") or "Unknown"
                        raw_val = p.get("value") or p.get("id") or name
                        
                        # Apply mapping to ensure valid backend ID
                        val = PROVIDER_ID_MAP.get(raw_val.lower(), raw_val)
                        
                        if val:
                            providers.append({
                                "name": name,
                                "value": val,
                                "baseUrl": p.get("baseUrl") or VEGA_API_BASE,
                                "isActive": True
                            })
                if providers: return providers
        except Exception:
            pass
    return FALLBACK_PROVIDERS

@app.get("/{provider}/catalog")
async def get_catalog(provider: str):
    # Remap provider if needed (double check)
    provider_id = PROVIDER_ID_MAP.get(provider.lower(), provider)
    
    url = f"{VEGA_API_BASE}/{provider_id}/catalog"
    try:
        async with httpx.AsyncClient() as client:
            resp = await client.get(url, timeout=5.0)
            if resp.status_code == 200:
                data = resp.json()
                if isinstance(data, list) and len(data) > 0:
                    return {"catalog": data}
                if isinstance(data, dict) and "catalog" in data:
                    return data
    except Exception:
        pass
    
    fallback = DEFAULT_CATALOGS.get(provider_id) or DEFAULT_CATALOGS.get("default")
    return {"catalog": fallback}

@app.get("/{provider}/posts")
async def get_posts(provider: str, filter: str = "", page: int = 1):
    provider_id = PROVIDER_ID_MAP.get(provider.lower(), provider)
    url = f"{VEGA_API_BASE}/{provider_id}/posts"
    params = {"filter": filter, "page": page}
    
    async with httpx.AsyncClient() as client:
        try:
            resp = await client.get(url, params=params, timeout=12.0)
            if resp.status_code == 200:
                data = resp.json()
                if isinstance(data, list): return data
                # Handle error response from upstream like {"error": "..."}
                if isinstance(data, dict) and "error" in data:
                    logger.error(f"Upstream error for {provider_id}: {data['error']}")
        except Exception as e:
            logger.error(f"Error posts {provider_id}: {e}")
            pass
    return []

@app.get("/{provider}/meta")
async def get_meta(provider: str, link: str):
    provider_id = PROVIDER_ID_MAP.get(provider.lower(), provider)
    url = f"{VEGA_API_BASE}/{provider_id}/meta"
    params = {"link": link}
    async with httpx.AsyncClient() as client:
        try:
            resp = await client.get(url, params=params, timeout=15.0)
            if resp.status_code == 200:
                return resp.json()
        except Exception:
            pass
    raise HTTPException(status_code=404, detail="Meta not found")

@app.get("/{provider}/episodes")
async def get_episodes(provider: str, url: str):
    provider_id = PROVIDER_ID_MAP.get(provider.lower(), provider)
    api_url = f"{VEGA_API_BASE}/{provider_id}/episodes"
    params = {"url": url}
    async with httpx.AsyncClient() as client:
        try:
            resp = await client.get(api_url, params=params, timeout=15.0)
            if resp.status_code == 200 and isinstance(resp.json(), list):
                return resp.json()
        except Exception:
            pass
    return []

@app.get("/{provider}/stream")
async def get_stream(provider: str, link: str, type: str = "movie"):
    provider_id = PROVIDER_ID_MAP.get(provider.lower(), provider)
    api_url = f"{VEGA_API_BASE}/{provider_id}/stream"
    params = {"link": link, "type": type}
    async with httpx.AsyncClient() as client:
        try:
            resp = await client.get(api_url, params=params, timeout=45.0)
            if resp.status_code == 200 and isinstance(resp.json(), list):
                return resp.json()
        except:
            pass
    return []