"""
MetaSet BI - Main Entry Point
FastAPI wrapper for Apache Superset Integration
Arcádia Suite - Port 8100
"""
import os
import sys
from pathlib import Path

# Add superset to path
SUPERSET_DIR = Path(__file__).parent / "src"
if SUPERSET_DIR.exists():
    sys.path.insert(0, str(SUPERSET_DIR))

from fastapi import FastAPI, HTTPException, Depends, Request
from fastapi.middleware.cors import CORSMiddleware
from fastapi.responses import JSONResponse
import httpx
from datetime import datetime
import logging

# Configuração de logging
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

# Criar app FastAPI
app = FastAPI(
    title="MetaSet BI",
    description="Apache Superset Fork for Arcádia Suite",
    version="4.1.0-arcadia",
    docs_url="/api/docs",
    redoc_url="/api/redoc",
)

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

# =============================================================================
# HEALTH CHECK (Kernel Integration)
# =============================================================================
@app.get("/health", tags=["health"])
async def health_check():
    """Health check endpoint for Kernel ServiceRegistry"""
    return {
        "status": "healthy",
        "service": "metaset",
        "version": "4.1.0-arcadia",
        "timestamp": datetime.utcnow().isoformat(),
        "port": 8100,
        "checks": {
            "database": await _check_database(),
            "redis": await _check_redis(),
        }
    }

async def _check_database() -> dict:
    """Check database connectivity"""
    try:
        # TODO: Implement actual DB check
        return {"status": "ok", "latency_ms": 0}
    except Exception as e:
        return {"status": "error", "error": str(e)}

async def _check_redis() -> dict:
    """Check Redis connectivity"""
    try:
        # TODO: Implement actual Redis check
        return {"status": "ok", "latency_ms": 0}
    except Exception as e:
        return {"status": "error", "error": str(e)}

# =============================================================================
# KERNEL INTEGRATION
# =============================================================================
@app.get("/api/kernel/info", tags=["kernel"])
async def kernel_info():
    """Return service info for Kernel discovery"""
    return {
        "id": "metaset",
        "name": "MetaSet BI",
        "type": "bi",
        "version": "4.1.0-arcadia",
        "capabilities": [
            "dashboards",
            "charts", 
            "sql_lab",
            "datasets",
            "embedding",
            "rls"
        ],
        "endpoints": {
            "health": "/health",
            "auth": "/api/auth",
            "dashboards": "/api/dashboards",
            "datasets": "/api/datasets",
        }
    }

# =============================================================================
# AUTH INTEGRATION (JWT Arcádia)
# =============================================================================
@app.post("/api/auth/arcadia", tags=["auth"])
async def auth_arcadia(request: Request):
    """
    Authenticate using Arcádia JWT token
    Creates/updates user in MetaSet from Arcádia payload
    """
    try:
        body = await request.json()
        token = body.get("token")
        
        if not token:
            raise HTTPException(status_code=400, detail="Token required")
        
        # TODO: Validate JWT against Arcádia
        # TODO: Create/update user in Superset DB
        
        return {
            "success": True,
            "message": "Authenticated via Arcádia",
            "token_type": "bearer",
        }
    except Exception as e:
        logger.error(f"Auth error: {e}")
        raise HTTPException(status_code=401, detail="Authentication failed")

# =============================================================================
# DASHBOARD API
# =============================================================================
@app.get("/api/dashboards", tags=["dashboards"])
async def list_dashboards():
    """List available dashboards"""
    # TODO: Query Superset database
    return {
        "dashboards": [],
        "count": 0
    }

@app.post("/api/dashboards", tags=["dashboards"])
async def create_dashboard(request: Request):
    """Create new dashboard"""
    try:
        body = await request.json()
        # TODO: Create in Superset
        return {"success": True, "id": None}
    except Exception as e:
        raise HTTPException(status_code=400, detail=str(e))

# =============================================================================
# GUEST TOKEN (EMBEDDING)
# =============================================================================
@app.post("/api/guest-token", tags=["embedding"])
async def create_guest_token(request: Request):
    """
    Create guest token for dashboard embedding
    Required for embedded Superset in Arcádia frontend
    """
    try:
        body = await request.json()
        
        # TODO: Generate JWT guest token
        # TODO: Validate user has access to requested resources
        
        return {
            "token": "guest-token-placeholder",
            "expires_in": 300
        }
    except Exception as e:
        raise HTTPException(status_code=400, detail=str(e))

# =============================================================================
# TENANT MANAGEMENT (Multi-tenancy)
# =============================================================================
@app.get("/api/tenants/{tenant_id}/rls", tags=["tenants"])
async def get_tenant_rls(tenant_id: int):
    """Get Row Level Security policies for tenant"""
    return {
        "tenant_id": tenant_id,
        "policies": []
    }

@app.post("/api/tenants/{tenant_id}/rls", tags=["tenants"])
async def set_tenant_rls(tenant_id: int, request: Request):
    """Set RLS policies for tenant"""
    try:
        body = await request.json()
        # TODO: Configure RLS in Superset
        return {"success": True}
    except Exception as e:
        raise HTTPException(status_code=400, detail=str(e))

# =============================================================================
# SYNC API (FDB-Bridge Integration)
# =============================================================================
@app.post("/api/sync/trigger", tags=["sync"])
async def trigger_sync(request: Request):
    """Trigger data sync from FDB-Bridge"""
    try:
        body = await request.json()
        source = body.get("source", "firebird")
        
        # TODO: Call FDB-Bridge API
        # TODO: Queue sync job in Celery
        
        return {
            "success": True,
            "job_id": None,
            "source": source,
            "status": "queued"
        }
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))

@app.get("/api/sync/status/{job_id}", tags=["sync"])
async def sync_status(job_id: str):
    """Get sync job status"""
    return {
        "job_id": job_id,
        "status": "completed",
        "progress": 100
    }

# =============================================================================
# MAIN
# =============================================================================
if __name__ == "__main__":
    import uvicorn
    
    port = int(os.environ.get("METASET_PORT", 8100))
    
    uvicorn.run(
        "main:app",
        host="0.0.0.0",
        port=port,
        reload=os.environ.get("NODE_ENV") == "development"
    )
