"""
Tests for TaskService.
"""

import pytest
from datetime import date
from app.services import TaskService
from app.models import Task, Project, User
from app import db


@pytest.mark.unit
def test_create_task_success(app, test_project, test_user):
    """Test successful task creation"""
    service = TaskService()

    result = service.create_task(
        name="Test Task",
        project_id=test_project.id,
        description="Test description",
        priority="high",
        created_by=test_user.id,
    )

    assert result["success"] is True
    assert result["task"] is not None
    assert result["task"].name == "Test Task"
    assert result["task"].project_id == test_project.id


@pytest.mark.unit
def test_create_task_invalid_project(app, test_user):
    """Test task creation with invalid project"""
    service = TaskService()

    result = service.create_task(name="Test Task", project_id=99999, created_by=test_user.id)  # Non-existent project

    assert result["success"] is False
    assert result["error"] == "invalid_project"


@pytest.mark.unit
def test_list_tasks_with_eager_loading(app, test_project, test_user):
    """Test listing tasks with eager loading prevents N+1"""
    service = TaskService()

    # Create a task
    task = Task(name="Test Task", project_id=test_project.id, created_by=test_user.id)
    db.session.add(task)
    db.session.commit()

    # List tasks
    result = service.list_tasks(project_id=test_project.id, user_id=test_user.id, is_admin=True, page=1, per_page=20)

    assert result["tasks"] is not None
    assert len(result["tasks"]) >= 1

    # Verify project is loaded (no N+1 query)
    task = result["tasks"][0]
    assert task.project is not None
    assert task.project.id == test_project.id


@pytest.mark.unit
def test_get_task_with_details(app, test_project, test_user):
    """Test getting task with all details"""
    service = TaskService()

    # Create a task
    task = Task(name="Test Task", project_id=test_project.id, created_by=test_user.id)
    db.session.add(task)
    db.session.commit()

    # Get task details
    task = service.get_task_with_details(
        task_id=task.id, include_time_entries=True, include_comments=True, include_activities=True
    )

    assert task is not None
    assert task.name == "Test Task"
    # Verify relations are loaded
    assert task.project is not None