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.suppliers.models import Suppliers
from app.modules.suppliers.schema import SupplierCreate, SupplierResponse, SupplierUpdate, messageResponse
from app.modules.suppliers.service import SuppliersService

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

#================ Create ====================
@router.post("/create", response_model=SupplierResponse, status_code=status.HTTP_201_CREATED)
async def create_suppliers(
    data: SupplierCreate,
    db: Session = Depends(get_db),
    current_user: Users = Depends(get_current_user)
):
    """Create a suppliers - 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 suppliers")
    
    try:
        result = SuppliersService.create_suppliers(db=db, data=data)
        return result
    except ValueError as e:
        raise HTTPException(status_code=400, detail=str(e))

#================ Get ====================
@router.get("/", response_model=List[SupplierResponse])
def get_supplierss(
    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 SuppliersService.get_suppliers(db=db, skip=skip, limit=limit)

#================ Get by ID ====================
@router.get("/{{{entity_name}}_id}", response_model=SupplierResponse)
def get_suppliers_by_id(
    suppliers_id: int,
    db: Session = Depends(get_db),
    current_user: Users = Depends(get_current_user)
):
    """Get suppliers by ID - requires authentication"""
    
    if not current_user:
        raise HTTPException(status_code=401, detail="Authentication required")
    
    try:
        result = SuppliersService.get_suppliers(db=db, suppliers_id=suppliers_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=SupplierResponse)
async def update_suppliers(
    suppliers_id: int,
    data: SupplierUpdate,
    db: Session = Depends(get_db),
    current_user: Users = Depends(get_current_user)
):
    """Update existing suppliers - 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 suppliers")
    
    try:
        result = SuppliersService.update_suppliers(
            db=db, 
            suppliers_id=suppliers_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_suppliers(
    suppliers_id: int,
    db: Session = Depends(get_db),
    current_user: Users = Depends(get_current_user)
):
    """Delete suppliers 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 suppliers")
    
    try:
        result = SuppliersService.delete_suppliers(db=db, suppliers_id=suppliers_id, current_user=current_user)
        return {"message": "suppliers deleted successfully"}
    except ValueError as e:
        raise HTTPException(status_code=404, detail=str(e))