"""Tests for CLI interface."""
import pytest
import json
from click.testing import CliRunner
from unittest.mock import patch


class TestCLI:
    """Test cases for CLI commands."""

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

    @pytest.fixture
    def sample_json_file(self, tmp_path):
        data = {"name": "Test", "value": 42}
        file_path = tmp_path / "sample.json"
        file_path.write_text(json.dumps(data))
        return file_path

    @pytest.fixture
    def invalid_json_file(self, tmp_path):
        file_path = tmp_path / "invalid.json"
        file_path.write_text("{invalid json}")
        return file_path

    def test_cli_main_help(self, runner):
        from json_to_openapi.cli import main
        result = runner.invoke(main, ["--help"])
        assert result.exit_code == 0
        assert "JSON to OpenAPI Generator" in result.output

    def test_cli_convert_basic(self, runner, sample_json_file, tmp_path):
        from json_to_openapi.cli import main
        output_file = tmp_path / "output.yaml"

        result = runner.invoke(main, [
            "convert",
            str(sample_json_file),
            "-o", str(output_file),
            "-f", "yaml",
            "-t", "Test API",
            "-v", "1.0.0"
        ])

        assert result.exit_code == 0
        assert output_file.exists()

    def test_cli_convert_invalid_file(self, runner, tmp_path):
        from json_to_openapi.cli import main
        non_existent = tmp_path / "nonexistent.json"

        result = runner.invoke(main, [
            "convert",
            str(non_existent)
        ])

        assert result.exit_code != 0
        assert "Error" in result.output

    def test_cli_info(self, runner):
        from json_to_openapi.cli import main
        result = runner.invoke(main, ["info"])
        assert result.exit_code == 0
        assert "JSON to OpenAPI Generator" in result.output

    @patch('json_to_openapi.cli.click.prompt')
    def test_cli_validate_valid_spec(self, mock_prompt, runner, tmp_path):
        from json_to_openapi.cli import main

        spec_content = """
openapi: 3.0.3
info:
  title: Test API
  version: 1.0.0
paths: {}
"""
        spec_file = tmp_path / "valid.yaml"
        spec_file.write_text(spec_content)

        result = runner.invoke(main, ["validate", str(spec_file)])

        assert result.exit_code == 0
        assert "Validation passed" in result.output

    @patch('json_to_openapi.cli.click.prompt')
    def test_cli_validate_invalid_spec(self, mock_prompt, runner, tmp_path):
        from json_to_openapi.cli import main

        spec_content = """
invalid: content
"""
        spec_file = tmp_path / "invalid.yaml"
        spec_file.write_text(spec_content)

        result = runner.invoke(main, ["validate", str(spec_file)])

        assert result.exit_code != 0
        assert "Validation failed" in result.output

    def test_cli_batch_no_files(self, runner, tmp_path):
        from json_to_openapi.cli import main

        result = runner.invoke(main, [
            "batch",
            str(tmp_path / "*.json")
        ])

        assert result.exit_code != 0
        assert "No files found" in result.output

    def test_cli_batch_single_file(self, runner, sample_json_file, tmp_path):
        from json_to_openapi.cli import main
        output_dir = tmp_path / "output"
        output_dir.mkdir()

        result = runner.invoke(main, [
            "batch",
            str(sample_json_file),
            "-o", str(output_dir),
            "-f", "yaml"
        ])

        assert result.exit_code == 0
        assert "Successfully processed" in result.output

    @patch('json_to_openapi.cli.click.prompt')
    @patch('json_to_openapi.cli.click.confirm')
    def test_cli_interactive(self, mock_confirm, mock_prompt, runner, sample_json_file, tmp_path):
        from json_to_openapi.cli import main

        mock_confirm.return_value = False

        mock_prompt.side_effect = [
            str(sample_json_file),
            "/items",
            "get",
            "Get Items",
            "",
            "yaml",
            str(tmp_path / "output.yaml")
        ]

        result = runner.invoke(main, ["interactive"])

        assert result.exit_code == 0

    def test_cli_verbose_flag(self, runner, sample_json_file, tmp_path):
        from json_to_openapi.cli import main
        output_file = tmp_path / "output.yaml"

        result = runner.invoke(main, [
            "-v",
            "convert",
            str(sample_json_file),
            "-o", str(output_file)
        ])

        assert result.exit_code == 0
        assert "[DEBUG]" in result.output

    def test_cli_quiet_flag(self, runner, sample_json_file, tmp_path):
        from json_to_openapi.cli import main
        output_file = tmp_path / "output.yaml"

        result = runner.invoke(main, [
            "-q",
            "convert",
            str(sample_json_file),
            "-o", str(output_file)
        ])

        assert result.exit_code == 0
        assert "Generated:" not in result.output

    def test_cli_convert_json_format(self, runner, sample_json_file, tmp_path):
        from json_to_openapi.cli import main
        output_file = tmp_path / "output.json"

        result = runner.invoke(main, [
            "convert",
            str(sample_json_file),
            "-o", str(output_file),
            "-f", "json"
        ])

        assert result.exit_code == 0
        content = output_file.read_text()
        parsed = json.loads(content)
        assert parsed["openapi"] == "3.0.3"