import json
import pytest
from click.testing import CliRunner

from api_mock_cli.cli import cli


class TestCLI:
    @pytest.fixture
    def runner(self):
        return CliRunner()

    @pytest.fixture
    def sample_har_file(self, tmp_path, sample_har_data):
        har_file = tmp_path / "test.har"
        har_file.write_text(json.dumps(sample_har_data))
        return str(har_file)

    def test_cli_version(self, runner):
        result = runner.invoke(cli, ["--version"])
        assert result.exit_code == 0
        assert "0.1.0" in result.output

    def test_capture_command(self, runner, sample_har_file, tmp_path):
        output = tmp_path / "captured.json"
        result = runner.invoke(
            cli,
            ["capture", sample_har_file, "--output", str(output)],
        )
        assert result.exit_code == 0
        assert output.exists()

    def test_generate_command(self, runner, sample_har_file, tmp_path):
        output = tmp_path / "mock_server.py"
        result = runner.invoke(
            cli,
            ["generate", sample_har_file, "--output", str(output)],
        )
        assert result.exit_code == 0
        assert output.exists()
        content = output.read_text()
        assert "from flask import Flask" in content

    def test_capture_invalid_file(self, runner):
        result = runner.invoke(
            cli,
            ["capture", "/nonexistent/file.har"],
        )
        assert result.exit_code != 0

    def test_generate_invalid_file(self, runner):
        result = runner.invoke(
            cli,
            ["generate", "/nonexistent/file.har"],
        )
        assert result.exit_code != 0

    def test_serve_command_with_har(self, runner, sample_har_file):
        result = runner.invoke(
            cli,
            ["serve", sample_har_file, "--port", "5001"],
        )
        assert result.exit_code != 0

    def test_run_command_file_not_found(self, runner):
        result = runner.invoke(
            cli,
            ["run", "/nonexistent/mock_server.py"],
        )
        assert result.exit_code != 0

    def test_cli_help(self, runner):
        result = runner.invoke(cli, ["--help"])
        assert result.exit_code == 0
        assert "Commands:" in result.output

    def test_capture_help(self, runner):
        result = runner.invoke(cli, ["capture", "--help"])
        assert result.exit_code == 0

    def test_generate_help(self, runner):
        result = runner.invoke(cli, ["generate", "--help"])
        assert result.exit_code == 0

    def test_serve_help(self, runner):
        result = runner.invoke(cli, ["serve", "--help"])
        assert result.exit_code == 0