from uuid import UUID

from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy import select
from sqlalchemy.ext.asyncio import AsyncSession

from app.auth.dependencies import get_current_active_user
from app.db import get_db_session
from app.models.project import Project
from app.models.user import User
from app.schemas.project import ProjectCreate, ProjectRead, ProjectUpdate

router = APIRouter(tags=["projects"])


@router.post("/projects", response_model=ProjectRead, status_code=status.HTTP_201_CREATED)
async def create_project(
    project_in: ProjectCreate,
    current_user: User = Depends(get_current_active_user),
    session: AsyncSession = Depends(get_db_session),
) -> Project:
    project = Project(**project_in.model_dump(), owner_id=current_user.id)
    session.add(project)
    await session.commit()
    await session.refresh(project)
    return project


@router.get("/projects", response_model=list[ProjectRead])
async def list_projects(
    current_user: User = Depends(get_current_active_user),
    session: AsyncSession = Depends(get_db_session),
) -> list[Project]:
    result = await session.execute(
        select(Project).where(Project.owner_id == current_user.id)
    )
    return list(result.scalars().all())


@router.get("/projects/{project_id}", response_model=ProjectRead)
async def get_project(
    project_id: UUID,
    current_user: User = Depends(get_current_active_user),
    session: AsyncSession = Depends(get_db_session),
) -> Project:
    project = await session.get(Project, project_id)
    if not project or project.owner_id != current_user.id:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Project not found")
    return project


@router.put("/projects/{project_id}", response_model=ProjectRead)
async def update_project(
    project_id: UUID,
    project_in: ProjectUpdate,
    current_user: User = Depends(get_current_active_user),
    session: AsyncSession = Depends(get_db_session),
) -> Project:
    project = await session.get(Project, project_id)
    if not project or project.owner_id != current_user.id:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Project not found")
    update_data = project_in.model_dump(exclude_unset=True)
    for field, value in update_data.items():
        setattr(project, field, value)
    await session.commit()
    await session.refresh(project)
    return project


@router.delete("/projects/{project_id}", status_code=status.HTTP_204_NO_CONTENT)
async def delete_project(
    project_id: UUID,
    current_user: User = Depends(get_current_active_user),
    session: AsyncSession = Depends(get_db_session),
) -> None:
    project = await session.get(Project, project_id)
    if not project or project.owner_id != current_user.id:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Project not found")
    await session.delete(project)
    await session.commit()