from typing import Optional

from fastapi import APIRouter, Depends
from sqlalchemy.ext.asyncio import AsyncSession

from app.database.session import get_db
from app.domain.entities.contest import ContestEntity
from app.infrastructure.contests_service import ContestsService
from app.infrastructure.dependencies import require_admin, get_current_user

router = APIRouter()

@router.get(
    '/',
    response_model=list[ContestEntity],
    summary='Get all contests',
    description='Returns all contests',
)
async def get_all_contests(
        db: AsyncSession = Depends(get_db),
):
    contests_service = ContestsService(db)
    return await contests_service.get_all_contests()


@router.post(
    '/',
    response_model=Optional[ContestEntity],
    summary='Create a new contest',
    description='Creates a new contest',
)
async def create_contest(
        contest: ContestEntity,
        db: AsyncSession = Depends(get_db),
        user=Depends(require_admin),
):
    contests_service = ContestsService(db)
    return await contests_service.create_contest(contest)


@router.put(
    '/{contest_id}/',
    response_model=Optional[ContestEntity],
    summary='Update a contest',
    description='Updates a contest',
)
async def update_contest(
        contest_id: int,
        contest: ContestEntity,
        db: AsyncSession = Depends(get_db),
        user=Depends(get_current_user),
):
    contests_service = ContestsService(db)
    return await contests_service.update_contest(contest_id, contest, user)


@router.delete(
    '/{contest_id}/',
    response_model=Optional[ContestEntity],
    summary='Delete a contest',
    description='Delete a contest',
)
async def delete_contest(
        contest_id: int,
        db: AsyncSession = Depends(get_db),
        user=Depends(require_admin),
):
    contests_service = ContestsService(db)
    return await contests_service.delete(contest_id, user)


@router.get(
    '/project/{project_id}/',
    response_model=Optional[ContestEntity],
    summary='Get project by contest ID',
    description='Retrieve project data by contest ID',
)
async def get_project_by_contest_id(
        project_id: int,
        db: AsyncSession = Depends(get_db),
        user=Depends(get_current_user),
):
    contests_service = ContestsService(db)
    contest = await contests_service.get_by_project(project_id)

    return contest