from fastapi import APIRouter, Depends, HTTPException
from sqlalchemy.orm import Session
from typing import List
from app.db.session import get_db
from app.schemas.task import Task, TaskCreate, TaskUpdate
from app.services.task import (
    get_tasks_by_user,
    get_task_by_id,
    create_task,
    update_task,
    delete_task,
    get_tasks_by_status,
)
from app.core.auth import get_current_active_user
from app.models.user import User
from app.models.task import TaskStatus

router = APIRouter()


@router.get("/", response_model=List[Task])
def read_tasks(
    skip: int = 0,
    limit: int = 100,
    status: TaskStatus = None,
    current_user: User = Depends(get_current_active_user),
    db: Session = Depends(get_db),
):
    if status:
        return get_tasks_by_status(db, user_id=current_user.id, status=status)
    return get_tasks_by_user(db, user_id=current_user.id, skip=skip, limit=limit)


@router.post("/", response_model=Task)
def create_new_task(
    task: TaskCreate,
    current_user: User = Depends(get_current_active_user),
    db: Session = Depends(get_db),
):
    return create_task(db, task=task, user_id=current_user.id)


@router.get("/{task_id}", response_model=Task)
def read_task(
    task_id: int,
    current_user: User = Depends(get_current_active_user),
    db: Session = Depends(get_db),
):
    db_task = get_task_by_id(db, task_id=task_id, user_id=current_user.id)
    if db_task is None:
        raise HTTPException(status_code=404, detail="Task not found")
    return db_task


@router.put("/{task_id}", response_model=Task)
def update_existing_task(
    task_id: int,
    task: TaskUpdate,
    current_user: User = Depends(get_current_active_user),
    db: Session = Depends(get_db),
):
    db_task = update_task(
        db, task_id=task_id, task_update=task, user_id=current_user.id
    )
    if db_task is None:
        raise HTTPException(status_code=404, detail="Task not found")
    return db_task


@router.delete("/{task_id}")
def delete_existing_task(
    task_id: int,
    current_user: User = Depends(get_current_active_user),
    db: Session = Depends(get_db),
):
    success = delete_task(db, task_id=task_id, user_id=current_user.id)
    if not success:
        raise HTTPException(status_code=404, detail="Task not found")
    return {"message": "Task deleted successfully"}