import json
from pathlib import Path

import pytest
from app.modules.project.domain.entities import Project
from app.modules.project.infrastructure.json_repository import JsonProjectRepository


@pytest.fixture
def repo(tmp_path: Path) -> JsonProjectRepository:
    return JsonProjectRepository(tmp_path / "projects.json")


def test_empty_repo_returns_empty_list(repo: JsonProjectRepository):
    assert repo.list_all() == []


def test_save_and_get(repo: JsonProjectRepository):
    from datetime import datetime
    p = Project(id="id1", name="test", design_dir="/tmp/d", code_dir=None, created_at=datetime(2026, 1, 1))
    repo.save(p)
    assert repo.get_by_id("id1") is not None
    assert repo.get_by_id("id1").name == "test"


def test_list_all(repo: JsonProjectRepository):
    from datetime import datetime
    p1 = Project(id="id1", name="a", design_dir="/d1", code_dir=None, created_at=datetime(2026, 1, 1))
    p2 = Project(id="id2", name="b", design_dir="/d2", code_dir=None, created_at=datetime(2026, 1, 2))
    repo.save(p1)
    repo.save(p2)
    assert len(repo.list_all()) == 2


def test_delete(repo: JsonProjectRepository):
    from datetime import datetime
    p = Project(id="id1", name="test", design_dir="/d", code_dir=None, created_at=datetime(2026, 1, 1))
    repo.save(p)
    repo.delete("id1")
    assert repo.get_by_id("id1") is None


def test_get_nonexistent_returns_none(repo: JsonProjectRepository):
    assert repo.get_by_id("nope") is None


# --- Service tests ---

from app.modules.project.application.services import ProjectService
from app.shared.kernel.exceptions import NotFoundError, ValidationError


@pytest.fixture
def service(tmp_path: Path) -> ProjectService:
    repo = JsonProjectRepository(tmp_path / "projects.json")
    return ProjectService(repo)


def test_create_project_validates_design_dir(service: ProjectService, tmp_path: Path):
    design_dir = tmp_path / "design"
    design_dir.mkdir()
    project = service.create_project("test", str(design_dir))
    assert project.name == "test"
    assert project.id  # UUID generated


def test_create_project_rejects_missing_dir(service: ProjectService):
    with pytest.raises(ValidationError):
        service.create_project("test", "/nonexistent/path")


def test_get_project_not_found(service: ProjectService):
    with pytest.raises(NotFoundError):
        service.get_project("nonexistent")


def test_delete_project(service: ProjectService, tmp_path: Path):
    design_dir = tmp_path / "design"
    design_dir.mkdir()
    p = service.create_project("test", str(design_dir))
    service.delete_project(p.id)
    with pytest.raises(NotFoundError):
        service.get_project(p.id)