from typing import Any, List, Optional

from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy.orm import Session

from app.core.database import get_db
from app.core.deps import get_current_active_user
from app.crud.task import (
    create_task,
    delete_task,
    get_task_by_user,
    get_tasks,
    update_task,
)
from app.models.user import User
from app.schemas.task import Task, TaskCreate, TaskUpdate

router = APIRouter()


@router.get("", response_model=List[Task])
def read_tasks(
    db: Session = Depends(get_db),
    skip: int = 0,
    limit: int = 100,
    completed: Optional[bool] = None,
    category_id: Optional[int] = None,
    search: Optional[str] = None,
    priority: Optional[str] = None,
    current_user: User = Depends(get_current_active_user),
) -> Any:
    """
    Retrieve tasks for the current user.
    """
    tasks = get_tasks(
        db=db,
        user_id=current_user.id,
        skip=skip,
        limit=limit,
        completed=completed,
        category_id=category_id,
        search=search,
        priority=priority,
    )
    return tasks


@router.post("", response_model=Task)
def create_task_endpoint(
    *,
    db: Session = Depends(get_db),
    task_in: TaskCreate,
    current_user: User = Depends(get_current_active_user),
) -> Any:
    """
    Create new task.
    """
    task = create_task(db=db, task_in=task_in, user_id=current_user.id)
    return task


@router.get("/{task_id}", response_model=Task)
def read_task(
    *,
    db: Session = Depends(get_db),
    task_id: int,
    current_user: User = Depends(get_current_active_user),
) -> Any:
    """
    Get specific task by ID.
    """
    task = get_task_by_user(db=db, task_id=task_id, user_id=current_user.id)
    if not task:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="Task not found",
        )
    return task


@router.put("/{task_id}", response_model=Task)
def update_task_endpoint(
    *,
    db: Session = Depends(get_db),
    task_id: int,
    task_in: TaskUpdate,
    current_user: User = Depends(get_current_active_user),
) -> Any:
    """
    Update a task.
    """
    task = get_task_by_user(db=db, task_id=task_id, user_id=current_user.id)
    if not task:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="Task not found",
        )
    task = update_task(
        db=db, task_id=task_id, task_in=task_in, user_id=current_user.id
    )
    return task


@router.delete("/{task_id}", response_model=Task)
def delete_task_endpoint(
    *,
    db: Session = Depends(get_db),
    task_id: int,
    current_user: User = Depends(get_current_active_user),
) -> Any:
    """
    Delete a task.
    """
    task = get_task_by_user(db=db, task_id=task_id, user_id=current_user.id)
    if not task:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="Task not found",
        )
    task = delete_task(db=db, task_id=task_id, user_id=current_user.id)
    return task