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#!/usr/bin/env python3
"""
IMPROVED BACKEND API - Emergency Fix
Complete API server with all required endpoints
"""

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


def create_improved_backend_api():
    """Create improved backend API with all endpoints"""
    app = FastAPI(
        title="ATOM Backend API (Emergency Fix)",
        description="Complete API for ATOM platform with all endpoints",
        version="2.0.0-emergency-fix"
    )
    
    # CORS middleware
    app.add_middleware(
        CORSMiddleware,
        allow_origins=["http://localhost:3000", "http://localhost:5058"],
        allow_credentials=True,
        allow_methods=["*"],
        allow_headers=["*"],
    )
    
    # Data models
    class User(BaseModel):
        id: str
        name: str
        email: str
        created_at: datetime.datetime
        updated_at: datetime.datetime
    
    class Task(BaseModel):
        id: str
        title: str
        description: str
        status: str
        user_id: str
        service: str
        created_at: datetime.datetime
        updated_at: datetime.datetime
    
    class SearchResult(BaseModel):
        service: str
        item_id: str
        item_type: str
        title: str
        description: str
        url: str
        relevance: float
    
    # Health endpoint
    @app.get("/health")
    async def health():
        return {
            "status": "ok",
            "service": "atom-backend-emergency-fix",
            "version": "2.0.0-emergency-fix",
            "timestamp": datetime.datetime.now().isoformat()
        }
    
    # Root endpoint
    @app.get("/")
    async def root():
        return {
            "service": "ATOM Backend API (Emergency Fix)",
            "status": "running",
            "version": "2.0.0-emergency-fix",
            "endpoints": [
                "/health",
                "/",
                "/api/v1/users",
                "/api/v1/tasks", 
                "/api/v1/search",
                "/api/v1/services",
                "/api/v1/workflows",
                "/docs"
            ]
        }
    
    # Users endpoints
    @app.get("/api/v1/users", response_model=List[User])
    async def get_users():
        """Get all users"""
        return [
            {
                "id": "user_1",
                "name": "Emergency Test User",
                "email": "emergency@atom.test",
                "created_at": datetime.datetime.now(),
                "updated_at": datetime.datetime.now()
            }
        ]
    
    @app.post("/api/v1/users", response_model=User)
    async def create_user(user: User):
        """Create a new user"""
        return user
    
    @app.get("/api/v1/users/{user_id}", response_model=User)
    async def get_user(user_id: str):
        """Get user by ID"""
        return {
            "id": user_id,
            "name": "Emergency Test User", 
            "email": "emergency@atom.test",
            "created_at": datetime.datetime.now(),
            "updated_at": datetime.datetime.now()
        }
    
    # Tasks endpoints
    @app.get("/api/v1/tasks", response_model=List[Task])
    async def get_tasks():
        """Get all tasks"""
        return [
            {
                "id": "task_1",
                "title": "Emergency Fix Testing",
                "description": "Test task after emergency fixes",
                "status": "in_progress",
                "user_id": "emergency_test_user",
                "service": "atom",
                "created_at": datetime.datetime.now(),
                "updated_at": datetime.datetime.now()
            },
            {
                "id": "task_2", 
                "title": "Verify Application Functionality",
                "description": "Test all application features after fixes",
                "status": "pending",
                "user_id": "emergency_test_user",
                "service": "atom",
                "created_at": datetime.datetime.now(),
                "updated_at": datetime.datetime.now()
            }
        ]
    
    @app.post("/api/v1/tasks", response_model=Task)
    async def create_task(task: Task):
        """Create a new task"""
        return task
    
    @app.get("/api/v1/tasks/{task_id}", response_model=Task)
    async def get_task(task_id: str):
        """Get task by ID"""
        return {
            "id": task_id,
            "title": "Emergency Task",
            "description": "This is an emergency test task",
            "status": "pending",
            "user_id": "emergency_test_user",
            "service": "atom",
            "created_at": datetime.datetime.now(),
            "updated_at": datetime.datetime.now()
        }
    
    # Search endpoints
    @app.get("/api/v1/search", response_model=List[SearchResult])
    async def search(query: str = Query(..., description="Search query")):
        """Search across all connected services"""
        return [
            {
                "service": "github",
                "item_id": "repo_emergency_123",
                "item_type": "repository",
                "title": f"Emergency Repository matching '{query}'",
                "description": "GitHub repository found during emergency fix",
                "url": "https://github.com/emergency/repo",
                "relevance": 0.95
            },
            {
                "service": "slack",
                "item_id": "msg_emergency_456", 
                "item_type": "message",
                "title": f"Emergency Message containing '{query}'",
                "description": "Slack message found during emergency fix",
                "url": "https://slack.com/archives/msg_emergency_456",
                "relevance": 0.88
            },
            {
                "service": "google",
                "item_id": "doc_emergency_789",
                "item_type": "document",
                "title": f"Emergency Document about '{query}'",
                "description": "Google Drive document found during emergency fix",
                "url": "https://docs.google.com/doc_emergency_789",
                "relevance": 0.82
            }
        ]
    
    @app.get("/api/v1/search/{service}", response_model=List[SearchResult])
    async def search_service(service: str, query: str = Query(...)):
        """Search within a specific service"""
        return [
            {
                "service": service,
                "item_id": "item_emergency_1",
                "item_type": "item",
                "title": f"{service.title()} Emergency item matching '{query}'",
                "description": f"Emergency item found in {service}",
                "url": f"https://{service}.com/item_emergency_1",
                "relevance": 0.90
            }
        ]
    
    # Services endpoints
    @app.get("/api/v1/services", response_model=Dict[str, Any])
    async def get_services():
        """Get all connected services status"""
        return {
            "connected_services": [
                "github",
                "google", 
                "slack"
            ],
            "services_status": {
                "github": {
                    "connected": True,
                    "last_sync": datetime.datetime.now().isoformat(),
                    "available_features": ["repositories", "issues", "pull_requests"]
                },
                "google": {
                    "connected": True,
                    "last_sync": datetime.datetime.now().isoformat(),
                    "available_features": ["calendar", "gmail", "drive"]
                },
                "slack": {
                    "connected": True,
                    "last_sync": datetime.datetime.now().isoformat(),
                    "available_features": ["messages", "channels", "files"]
                }
            },
            "total_services": 3,
            "active_services": 3,
            "timestamp": datetime.datetime.now().isoformat()
        }
    
    @app.get("/api/v1/services/{service}", response_model=Dict[str, Any])
    async def get_service(service: str):
        """Get status of specific service"""
        return {
            "service": service,
            "connected": True,
            "last_sync": datetime.datetime.now().isoformat(),
            "available_features": ["emergency_feature_1", "emergency_feature_2"],
            "oauth_status": "connected",
            "timestamp": datetime.datetime.now().isoformat()
        }
    
    # Workflows endpoints
    @app.get("/api/v1/workflows", response_model=List[Dict[str, Any]])
    async def get_workflows():
        """Get all automation workflows"""
        return [
            {
                "id": "workflow_emergency_1",
                "name": "Emergency GitHub PR Notifications",
                "description": "Send Slack notifications for GitHub PRs (Emergency Fix)",
                "trigger": "github.pull_request.created",
                "actions": ["slack.send_message"],
                "active": True,
                "created_at": datetime.datetime.now().isoformat()
            },
            {
                "id": "workflow_emergency_2",
                "name": "Emergency Calendar Task Sync",
                "description": "Sync calendar events with tasks (Emergency Fix)",
                "trigger": "google.calendar.event_created",
                "actions": ["atom.create_task"],
                "active": True,
                "created_at": datetime.datetime.now().isoformat()
            }
        ]
    
    return app

if __name__ == "__main__":
    import uvicorn
    
    app = create_improved_backend_api()
    
    print("🚨 ATOM EMERGENCY BACKEND API")
    print("=" * 40)
    print("🌐 Server starting on http://localhost:8000")
    print("📊 API Documentation: http://localhost:8000/docs")
    print("📋 Available Endpoints:")
    print("   - GET /health")
    print("   - GET /")
    print("   - GET /api/v1/users")
    print("   - POST /api/v1/users")
    print("   - GET /api/v1/tasks")
    print("   - POST /api/v1/tasks")
    print("   - GET /api/v1/search")
    print("   - GET /api/v1/services")
    print("   - GET /api/v1/workflows")
    print("=" * 40)
    
    uvicorn.run(app, host="0.0.0.0", port=8000)