import uuid
from datetime import datetime, timezone
from pathlib import Path

from app.modules.project.domain.entities import Project
from app.modules.project.domain.repositories import ProjectRepository
from app.shared.kernel.exceptions import NotFoundError, ValidationError


class ProjectService:
    def __init__(self, repository: ProjectRepository) -> None:
        self._repo = repository

    def list_projects(self) -> list[Project]:
        return self._repo.list_all()

    def create_project(
        self, name: str, design_dir: str, code_dir: str | None = None,
    ) -> Project:
        if not Path(design_dir).is_dir():
            raise ValidationError(f"Design directory does not exist: {design_dir}")
        project = Project(
            id=str(uuid.uuid4()),
            name=name,
            design_dir=design_dir,
            code_dir=code_dir,
            created_at=datetime.now(timezone.utc),
        )
        self._repo.save(project)
        return project

    def get_project(self, project_id: str) -> Project:
        project = self._repo.get_by_id(project_id)
        if project is None:
            raise NotFoundError("Project", project_id)
        return project

    def delete_project(self, project_id: str) -> None:
        project = self._repo.get_by_id(project_id)
        if project is None:
            raise NotFoundError("Project", project_id)
        self._repo.delete(project_id)