from fastapi import APIRouter, Depends, HTTPException, Query, Header, status
from fastapi.security import HTTPAuthorizationCredentials, HTTPBearer
from sqlalchemy.orm import Session
from typing import Optional, List
#
from database import get_db
from app.core.auth import get_current_user
from app.modules.users.models import Users  # Modelo base de usuario
from app.modules.feed.models import Feed
from app.modules.feed.schema import FeedUpdate, FeedCreate, FeedResponse, messageResponse
from app.modules.feed.service import FeedService

router = APIRouter(prefix="/feed", tags=["feed"])
security = HTTPBearer()

#================ Create ====================
@router.post("/create", response_model=FeedResponse, status_code=status.HTTP_201_CREATED)
async def create_feed(
    data: FeedCreate,
    db: Session = Depends(get_db),
    current_user: Users = Depends(get_current_user)
):
    """Create a feed - Requires authentication"""
    
    if not current_user:
        raise HTTPException(status_code=401, detail="User not found - invalid token")
    
    if current_user.tipo_usuario not in ["root", "admin"]:
        raise HTTPException(status_code=403, detail="You don't have permission to create feed")
    
    try:
        result = FeedService.create_feed(db=db, data=data)
        return result
    except ValueError as e:
        raise HTTPException(status_code=400, detail=str(e))

#================ Get ====================
@router.get("/", response_model=List[FeedResponse])
def get_feeds(
    db: Session = Depends(get_db),
    current_user: Users = Depends(get_current_user),
    skip: int = Query(0, ge=0, description="Number of records to skip"),
    limit: int = Query(100, ge=1, le=1000, description="Max number of records to return")
):
    """Get list with pagination - requires authentication"""
    
    if not current_user:
        raise HTTPException(status_code=401, detail="Authentication required")
    
    return FeedService.get_feeds(db=db, skip=skip, limit=limit)

#================ Get by ID ====================
@router.get("/{{{entity_name}}_id}", response_model=FeedResponse)
def get_feed_by_id(
    feed_id: int,
    db: Session = Depends(get_db),
    current_user: Users = Depends(get_current_user)
):
    """Get feed by ID - requires authentication"""
    
    if not current_user:
        raise HTTPException(status_code=401, detail="Authentication required")
    
    try:
        result = FeedService.get_feed(db=db, feed_id=feed_id, current_user=current_user)
        return result
    except ValueError as e:
        raise HTTPException(status_code=404, detail=str(e))

#================ Update ====================
@router.patch("/update/{{{entity_name}}_id}", response_model=FeedResponse)
async def update_feed(
    feed_id: int,
    data: FeedUpdate,
    db: Session = Depends(get_db),
    current_user: Users = Depends(get_current_user)
):
    """Update existing feed - requires authentication"""
    
    if not current_user:
        raise HTTPException(status_code=401, detail="Authentication required")
    
    if current_user.tipo_usuario not in ["root", "admin"]:
        raise HTTPException(status_code=403, detail="You don't have permission to update feed")
    
    try:
        result = FeedService.update_feed(
            db=db, 
            feed_id=feed_id, 
            data=data, 
            current_user=current_user
        )
        return result
    except ValueError as e:
        raise HTTPException(status_code=404, detail=str(e))

#================ Delete ====================
@router.delete("/delete/{{{entity_name}}_id}", response_model= messageResponse, status_code=status.HTTP_200_OK)
async def delete_feed(
    feed_id: int,
    db: Session = Depends(get_db),
    current_user: Users = Depends(get_current_user)
):
    """Delete feed by ID - requires authentication"""
    
    if not current_user:
        raise HTTPException(status_code=401, detail="Authentication required")
    
    if current_user.tipo_usuario not in ["root", "admin"]:
        raise HTTPException(status_code=403, detail="You don't have permission to delete feed")
    
    try:
        result = FeedService.delete_feed(db=db, feed_id=feed_id, current_user=current_user)
        return {"message": "feed deleted successfully"}
    except ValueError as e:
        raise HTTPException(status_code=404, detail=str(e))