"""
CLI类的单元测试
"""

import pytest
from io import StringIO
import sys
from todo.cli import CLI


@pytest.fixture
def temp_cli(tmp_path):
    """创建临时CLI对象"""
    filepath = tmp_path / "test_todos.json"
    return CLI(str(filepath))


class TestCLI:
    """CLI类测试"""
    
    def test_create_cli(self, temp_cli):
        """测试创建CLI对象"""
        assert temp_cli.todo is not None
        assert temp_cli.storage is not None
    
    def test_cmd_add(self, temp_cli, capsys):
        """测试添加命令"""
        temp_cli.cmd_add("买菜")
        captured = capsys.readouterr()
        assert "已添加" in captured.out
        assert "买菜" in captured.out
        assert len(temp_cli.todo.items) == 1
    
    def test_cmd_list_empty(self, temp_cli, capsys):
        """测试列出空列表"""
        temp_cli.cmd_list()
        captured = capsys.readouterr()
        assert "无" in captured.out
    
    def test_cmd_list_all(self, temp_cli, capsys):
        """测试列出所有事项"""
        temp_cli.cmd_add("任务1")
        temp_cli.cmd_add("任务2")
        temp_cli.cmd_complete(1)
        
        temp_cli.cmd_list("all")
        captured = capsys.readouterr()
        assert "任务1" in captured.out
        assert "任务2" in captured.out
        assert "总计: 2" in captured.out
    
    def test_cmd_list_pending(self, temp_cli, capsys):
        """测试列出未完成事项"""
        temp_cli.cmd_add("任务1")
        temp_cli.cmd_add("任务2")
        temp_cli.cmd_complete(1)
        
        temp_cli.cmd_list("pending")
        captured = capsys.readouterr()
        assert "未完成" in captured.out
        assert "任务2" in captured.out
    
    def test_cmd_list_completed(self, temp_cli, capsys):
        """测试列出已完成事项"""
        temp_cli.cmd_add("任务1")
        temp_cli.cmd_add("任务2")
        temp_cli.cmd_complete(1)
        
        temp_cli.cmd_list("completed")
        captured = capsys.readouterr()
        assert "已完成" in captured.out
        assert "任务1" in captured.out
    
    def test_cmd_complete(self, temp_cli, capsys):
        """测试完成命令"""
        temp_cli.cmd_add("任务1")
        temp_cli.cmd_complete(1)
        captured = capsys.readouterr()
        assert "已完成" in captured.out
        assert temp_cli.todo.items[0].completed is True
    
    def test_cmd_complete_nonexistent(self, temp_cli):
        """测试完成不存在的事项"""
        with pytest.raises(SystemExit):
            temp_cli.cmd_complete(999)
    
    def test_cmd_uncomplete(self, temp_cli, capsys):
        """测试取消完成命令"""
        temp_cli.cmd_add("任务1")
        temp_cli.cmd_complete(1)
        temp_cli.cmd_uncomplete(1)
        captured = capsys.readouterr()
        assert "未完成" in captured.out
        assert temp_cli.todo.items[0].completed is False
    
    def test_cmd_delete(self, temp_cli, capsys):
        """测试删除命令"""
        temp_cli.cmd_add("任务1")
        temp_cli.cmd_delete(1)
        captured = capsys.readouterr()
        assert "已删除" in captured.out
        assert len(temp_cli.todo.items) == 0
    
    def test_cmd_delete_nonexistent(self, temp_cli):
        """测试删除不存在的事项"""
        with pytest.raises(SystemExit):
            temp_cli.cmd_delete(999)
    
    def test_cmd_clear(self, temp_cli, capsys):
        """测试清除已完成事项"""
        temp_cli.cmd_add("任务1")
        temp_cli.cmd_add("任务2")
        temp_cli.cmd_add("任务3")
        temp_cli.cmd_complete(1)
        temp_cli.cmd_complete(2)
        
        temp_cli.cmd_clear()
        captured = capsys.readouterr()
        assert "已清除 2 个" in captured.out
        assert len(temp_cli.todo.items) == 1
    
    def test_run_add_command(self, temp_cli):
        """测试运行add命令"""
        temp_cli.run(["add", "测试任务"])
        assert len(temp_cli.todo.items) == 1
        assert temp_cli.todo.items[0].title == "测试任务"
    
    def test_run_list_command(self, temp_cli, capsys):
        """测试运行list命令"""
        temp_cli.run(["add", "任务1"])
        temp_cli.run(["list"])
        captured = capsys.readouterr()
        assert "任务1" in captured.out
    
    def test_run_complete_command(self, temp_cli):
        """测试运行complete命令"""
        temp_cli.run(["add", "任务1"])
        temp_cli.run(["complete", "1"])
        assert temp_cli.todo.items[0].completed is True
    
    def test_run_delete_command(self, temp_cli):
        """测试运行delete命令"""
        temp_cli.run(["add", "任务1"])
        temp_cli.run(["delete", "1"])
        assert len(temp_cli.todo.items) == 0
    
    def test_run_no_command(self, temp_cli, capsys):
        """测试不带命令运行"""
        temp_cli.run([])
        captured = capsys.readouterr()
        assert "usage:" in captured.out or "Todo List" in captured.out
    
    def test_persistence(self, temp_cli):
        """测试数据持久化"""
        # 添加数据
        temp_cli.run(["add", "任务1"])
        temp_cli.run(["add", "任务2"])
        temp_cli.run(["complete", "1"])
        
        # 创建新的CLI实例，应该能加载之前的数据
        new_cli = CLI(temp_cli.storage.filepath)
        assert len(new_cli.todo.items) == 2
        assert new_cli.todo.items[0].completed is True
        assert new_cli.todo.items[1].completed is False