#!/usr/bin/env python3
"""Tests for the GitLab CLI MCP server implementation."""

import json
from unittest.mock import MagicMock, patch

from mcp_server_gitlab_glab.server import GitLabServer


class TestGitLabServer:
    """Tests for the GitLabServer class."""

    def test_init(self) -> None:
        """Test initialization of GitLabServer."""
        server = GitLabServer()
        assert hasattr(server, "auth_message")
        assert "glab auth login" in server.auth_message

    @patch("subprocess.run")
    def test_execute_glab_command_success(self, mock_run: MagicMock) -> None:
        """Test successful execution of a glab command."""
        # Mock successful command execution
        mock_process = MagicMock()
        mock_process.returncode = 0
        mock_process.stdout = "command output"
        mock_process.stderr = ""
        mock_run.return_value = mock_process

        server = GitLabServer()
        working_dir = "/test/directory"
        success, result = server.execute_glab_command(["--version"], working_dir)

        assert success is True
        assert result == "command output"
        mock_run.assert_called_once_with(
            ["glab", "--version"],
            capture_output=True,
            text=True,
            check=False,
            cwd=working_dir,
        )

    @patch("subprocess.run")
    def test_execute_glab_command_failure(self, mock_run: MagicMock) -> None:
        """Test failed execution of a glab command."""
        # Mock failed command execution
        mock_process = MagicMock()
        mock_process.returncode = 1
        mock_process.stdout = ""
        mock_process.stderr = "command failed"
        mock_run.return_value = mock_process

        server = GitLabServer()
        working_dir = "/test/directory"
        success, result = server.execute_glab_command(["--version"], working_dir)

        assert success is False
        assert result == {"error": "command failed"}
        mock_run.assert_called_once_with(
            ["glab", "--version"],
            capture_output=True,
            text=True,
            check=False,
            cwd=working_dir,
        )

    @patch("subprocess.run")
    def test_execute_glab_command_auth_error(self, mock_run: MagicMock) -> None:
        """Test authentication error during glab command execution."""
        # Mock authentication error
        mock_process = MagicMock()
        mock_process.returncode = 1
        mock_process.stdout = ""
        mock_process.stderr = "authentication required"
        mock_run.return_value = mock_process

        server = GitLabServer()
        working_dir = "/test/directory"
        success, result = server.execute_glab_command(["api", "/projects"], working_dir)

        assert success is False
        assert "error" in result
        assert "auth login" in result["error"]
        mock_run.assert_called_once_with(
            ["glab", "api", "/projects"],
            capture_output=True,
            text=True,
            check=False,
            cwd=working_dir,
        )

    @patch("subprocess.run")
    def test_execute_glab_command_not_found(self, mock_run: MagicMock) -> None:
        """Test glab command not found error."""
        # Mock FileNotFoundError
        mock_run.side_effect = FileNotFoundError("No such file or directory: 'glab'")

        server = GitLabServer()
        working_dir = "/test/directory"
        success, result = server.execute_glab_command(["--version"], working_dir)

        assert success is False
        assert "error" in result
        assert "glab command not found" in result["error"]

    @patch("subprocess.run")
    def test_execute_glab_api_command_success(self, mock_run: MagicMock) -> None:
        """Test successful execution of a glab api command with JSON response."""
        # Mock successful API command execution with JSON response
        mock_process = MagicMock()
        mock_process.returncode = 0
        mock_process.stdout = json.dumps([{"id": 1, "name": "test-project"}])
        mock_process.stderr = ""
        mock_run.return_value = mock_process

        server = GitLabServer()
        working_dir = "/test/directory"
        success, result = server.execute_glab_command(["api", "/projects"], working_dir)

        assert success is True
        assert isinstance(result, list)
        assert len(result) == 1
        assert result[0]["id"] == 1
        assert result[0]["name"] == "test-project"
        mock_run.assert_called_once_with(
            ["glab", "api", "/projects"],
            capture_output=True,
            text=True,
            check=False,
            cwd=working_dir,
        )

    @patch("subprocess.run")
    def test_execute_glab_api_command_invalid_json(self, mock_run: MagicMock) -> None:
        """Test glab api command with invalid JSON response."""
        # Mock API command execution with invalid JSON response
        mock_process = MagicMock()
        mock_process.returncode = 0
        mock_process.stdout = "invalid json"
        mock_process.stderr = ""
        mock_run.return_value = mock_process

        server = GitLabServer()
        working_dir = "/test/directory"
        success, result = server.execute_glab_command(["api", "/projects"], working_dir)

        assert success is False
        assert "error" in result
        assert "Failed to parse JSON response" in result["error"]

    @patch.object(GitLabServer, "execute_glab_command")
    def test_check_availability_success(self, mock_execute: MagicMock) -> None:
        """Test successful check_availability."""
        # Mock successful command execution
        mock_execute.return_value = (True, "glab version 1.0.0")

        server = GitLabServer()
        working_dir = "/test/directory"
        result = server.check_availability(working_dir)

        assert result["available"] is True
        assert result["version"] == "glab version 1.0.0"
        mock_execute.assert_called_once_with(["--version"], working_dir)

    @patch.object(GitLabServer, "execute_glab_command")
    def test_check_availability_failure(self, mock_execute: MagicMock) -> None:
        """Test failed check_availability."""
        # Mock failed command execution
        mock_execute.return_value = (False, {"error": "glab command not found"})

        server = GitLabServer()
        working_dir = "/test/directory"
        result = server.check_availability(working_dir)

        assert result["available"] is False
        assert result["error"] == "glab command not found"
        mock_execute.assert_called_once_with(["--version"], working_dir)

    @patch.object(GitLabServer, "execute_glab_command")
    def test_find_project_success(self, mock_execute: MagicMock) -> None:
        """Test successful find_project with a single project."""
        # Mock successful API response with a project
        mock_execute.return_value = (
            True,
            [
                {
                    "id": 1,
                    "name": "test-project",
                    "path_with_namespace": "group/test-project",
                    "web_url": "https://gitlab.com/group/test-project",
                    "description": "A test project",
                }
            ],
        )

        server = GitLabServer()
        working_dir = "/test/directory"
        result = server.find_project("test-project", working_dir)

        assert isinstance(result, list)
        assert len(result) == 1
        assert result[0]["id"] == 1
        assert result[0]["name"] == "test-project"
        assert result[0]["path_with_namespace"] == "group/test-project"
        assert result[0]["web_url"] == "https://gitlab.com/group/test-project"
        assert result[0]["description"] == "A test project"
        mock_execute.assert_called_once_with(
            ["api", "/projects?search_namespaces=true&search=test-project"], working_dir
        )

    @patch.object(GitLabServer, "execute_glab_command")
    def test_find_project_multiple_results(self, mock_execute: MagicMock) -> None:
        """Test successful find_project with multiple projects."""
        # Mock successful API response with multiple projects
        mock_execute.return_value = (
            True,
            [
                {
                    "id": 1,
                    "name": "test-project",
                    "path_with_namespace": "group/test-project",
                    "web_url": "https://gitlab.com/group/test-project",
                    "description": "A test project",
                },
                {
                    "id": 2,
                    "name": "test-project-2",
                    "path_with_namespace": "group/test-project-2",
                    "web_url": "https://gitlab.com/group/test-project-2",
                    "description": "Another test project",
                },
                {
                    "id": 3,
                    "name": "test-project-3",
                    "path_with_namespace": "group/test-project-3",
                    "web_url": "https://gitlab.com/group/test-project-3",
                    "description": "Yet another test project",
                },
            ],
        )

        server = GitLabServer()
        working_dir = "/test/directory"
        result = server.find_project("test-project", working_dir)

        assert isinstance(result, list)
        assert len(result) == 3

        # Check first project
        assert result[0]["id"] == 1
        assert result[0]["name"] == "test-project"
        assert result[0]["path_with_namespace"] == "group/test-project"

        # Check second project
        assert result[1]["id"] == 2
        assert result[1]["name"] == "test-project-2"
        assert result[1]["path_with_namespace"] == "group/test-project-2"

        # Check third project
        assert result[2]["id"] == 3
        assert result[2]["name"] == "test-project-3"
        assert result[2]["path_with_namespace"] == "group/test-project-3"

        mock_execute.assert_called_once_with(
            ["api", "/projects?search_namespaces=true&search=test-project"], working_dir
        )

    @patch.object(GitLabServer, "execute_glab_command")
    def test_find_project_not_found(self, mock_execute: MagicMock) -> None:
        """Test find_project with no results."""
        # Mock API response with no projects
        mock_execute.return_value = (True, [])

        server = GitLabServer()
        working_dir = "/test/directory"
        result = server.find_project("nonexistent-project", working_dir)

        assert "error" in result
        assert "not found" in result["error"]
        mock_execute.assert_called_once_with(
            [
                "api",
                "/projects?search_namespaces=true&search=nonexistent-project",
            ],
            working_dir
        )

    @patch.object(GitLabServer, "execute_glab_command")
    def test_find_project_api_error(self, mock_execute: MagicMock) -> None:
        """Test find_project with API error."""
        # Mock API error
        mock_execute.return_value = (False, {"error": "API error"})

        server = GitLabServer()
        working_dir = "/test/directory"
        result = server.find_project("test-project", working_dir)

        assert "error" in result
        assert result["error"] == "API error"
        mock_execute.assert_called_once_with(
            ["api", "/projects?search_namespaces=true&search=test-project"], working_dir
        )

    @patch.object(GitLabServer, "execute_glab_command")
    def test_search_issues_success(self, mock_execute: MagicMock) -> None:
        """Test successful issue search with default parameters."""
        # Mock successful command execution with JSON output
        mock_execute.return_value = (
            True,
            [
                {
                    "id": 1,
                    "iid": 101,
                    "title": "Test Issue 1",
                    "web_url": "https://gitlab.com/group/project/issues/101",
                    "state": "opened",
                    "created_at": "2025-01-01T00:00:00Z",
                    "updated_at": "2025-01-02T00:00:00Z",
                },
                {
                    "id": 2,
                    "iid": 102,
                    "title": "Test Issue 2",
                    "web_url": "https://gitlab.com/group/project/issues/102",
                    "state": "closed",
                    "created_at": "2025-01-03T00:00:00Z",
                    "updated_at": "2025-01-04T00:00:00Z",
                },
            ],
        )

        server = GitLabServer()
        working_dir = "/test/directory"
        result = server.search_issues(working_directory=working_dir)

        assert "issues" in result
        assert len(result["issues"]) == 2
        assert result["issues"][0]["id"] == 1
        assert result["issues"][0]["title"] == "Test Issue 1"
        assert result["issues"][1]["id"] == 2
        assert result["issues"][1]["title"] == "Test Issue 2"
        
        # Verify command was called with correct arguments
        mock_execute.assert_called_once_with(
            ["issue", "list", "-O", "json"],
            working_dir,
        )

    @patch.object(GitLabServer, "execute_glab_command")
    def test_search_issues_with_filters(self, mock_execute: MagicMock) -> None:
        """Test issue search with various filters."""
        # Mock successful command execution with JSON output
        mock_execute.return_value = (
            True,
            [
                {
                    "id": 1,
                    "iid": 101,
                    "title": "Test Issue 1",
                    "web_url": "https://gitlab.com/group/project/issues/101",
                    "state": "opened",
                    "created_at": "2025-01-01T00:00:00Z",
                    "updated_at": "2025-01-02T00:00:00Z",
                },
            ],
        )

        server = GitLabServer()
        working_dir = "/test/directory"
        result = server.search_issues(
            working_directory=working_dir,
            author="user1",
            assignee="user2",
            closed=True,
            confidential=True,
            group="test-group",
            issue_type="incident",
            iteration=123,
            label=["bug", "critical"],
            milestone="v1.0",
            not_assignee="user3",
            not_author="user4",
            not_label=["wontfix"],
            page=2,
            per_page=10,
            project="group/project",
        )

        assert "issues" in result
        assert len(result["issues"]) == 1
        assert result["issues"][0]["id"] == 1
        assert result["issues"][0]["title"] == "Test Issue 1"

        # Verify command was called with correct arguments
        mock_execute.assert_called_once_with(
            [
                "issue", "list", "-O", "json",
                "--author", "user1",
                "-a", "user2",
                "-c",
                "-C",
                "-g", "test-group",
                "-t", "incident",
                "-i", "123",
                "-l", "bug",
                "-l", "critical",
                "-m", "v1.0",
                "--not-assignee", "user3",
                "--not-author", "user4",
                "--not-label", "wontfix",
                "-p", "2",
                "-P", "10",
                "-R", "group/project",
            ],
            working_dir,
        )

    @patch.object(GitLabServer, "execute_glab_command")
    def test_search_issues_failure(self, mock_execute: MagicMock) -> None:
        """Test failed issue search."""
        # Mock failed command execution
        mock_execute.return_value = (False, {"error": "Failed to list issues"})

        server = GitLabServer()
        working_dir = "/test/directory"
        result = server.search_issues(working_directory=working_dir)

        assert "error" in result
        assert result["error"] == "Failed to list issues"
        mock_execute.assert_called_once_with(
            ["issue", "list", "-O", "json"],
            working_dir,
        )

    @patch.object(GitLabServer, "execute_glab_command")
    def test_search_issues_invalid_json(self, mock_execute: MagicMock) -> None:
        """Test issue search with invalid JSON response."""
        # Mock successful command execution but with invalid JSON
        mock_execute.return_value = (True, "invalid json")

        server = GitLabServer()
        working_dir = "/test/directory"
        result = server.search_issues(working_directory=working_dir)

        assert "error" in result
        assert result["error"] == "Failed to parse issues list"
        mock_execute.assert_called_once_with(
            ["issue", "list", "-O", "json"],
            working_dir,
        )

    @patch.object(GitLabServer, "execute_glab_command")
    def test_create_issue_success(self, mock_execute: MagicMock) -> None:
        """Test successful issue creation with required parameters."""
        # Mock successful command execution with actual glab output format
        mock_execute.return_value = (True, """- Creating issue in group/project
#1 Test Issue (less than a minute ago)
 https://gitlab.com/group/project/issues/1""")

        server = GitLabServer()
        working_dir = "/test/directory"
        result = server.create_issue(
            title="Test Issue",
            description="Test Description",
            working_directory=working_dir,
        )

        assert "url" in result
        assert result["url"] == "https://gitlab.com/group/project/issues/1"
        mock_execute.assert_called_once_with(
            ["issue", "create", "-y", "-t", "Test Issue", "-d", "Test Description"],
            working_dir,
        )

    @patch.object(GitLabServer, "execute_glab_command")
    def test_create_issue_with_all_params(self, mock_execute: MagicMock) -> None:
        """Test issue creation with all optional parameters."""
        # Mock successful command execution with actual glab output format
        mock_execute.return_value = (True, """- Creating issue in group/project
#2 Test Issue (less than a minute ago)
 https://gitlab.com/group/project/issues/2""")

        server = GitLabServer()
        working_dir = "/test/directory"
        result = server.create_issue(
            title="Test Issue",
            description="Test Description",
            working_directory=working_dir,
            labels=["bug", "critical"],
            assignee=["user1", "user2"],
            milestone="v1.0",
            epic_id=123,
            project="group/project",
        )

        assert "url" in result
        assert result["url"] == "https://gitlab.com/group/project/issues/2"
        mock_execute.assert_called_once_with(
            [
                "issue", "create", "-y",
                "-t", "Test Issue",
                "-d", "Test Description",
                "-l", "bug,critical",
                "-a", "user1",
                "-a", "user2",
                "-m", "v1.0",
                "--epic", "123",
                "-R", "group/project",
            ],
            working_dir,
        )

    @patch.object(GitLabServer, "execute_glab_command")
    def test_create_issue_failure(self, mock_execute: MagicMock) -> None:
        """Test failed issue creation."""
        # Mock failed command execution
        mock_execute.return_value = (False, {"error": "Failed to create issue"})

        server = GitLabServer()
        working_dir = "/test/directory"
        result = server.create_issue(
            title="Test Issue",
            description="Test Description",
            working_directory=working_dir,
        )

        assert "error" in result
        assert result["error"] == "Failed to create issue"
        mock_execute.assert_called_once_with(
            ["issue", "create", "-y", "-t", "Test Issue", "-d", "Test Description"],
            working_dir,
        )

    @patch.object(GitLabServer, "execute_glab_command")
    def test_create_issue_invalid_output(self, mock_execute: MagicMock) -> None:
        """Test issue creation with invalid output format."""
        # Mock successful command execution but without a URL in the output
        mock_execute.return_value = (True, """- Creating issue in group/project
#3 Test Issue (less than a minute ago)
 Invalid URL format""")

        server = GitLabServer()
        working_dir = "/test/directory"
        result = server.create_issue(
            title="Test Issue",
            description="Test Description",
            working_directory=working_dir,
        )

        assert "error" in result
        assert result["error"] == "Failed to extract issue URL from command output"
        mock_execute.assert_called_once_with(
            ["issue", "create", "-y", "-t", "Test Issue", "-d", "Test Description"],
            working_dir,
        )

    @patch("subprocess.run")
    def test_working_directory_is_used(self, mock_run: MagicMock) -> None:
        """Test that the working directory is correctly passed to subprocess.run."""
        # Mock successful command execution
        mock_process = MagicMock()
        mock_process.returncode = 0
        mock_process.stdout = "command output"
        mock_process.stderr = ""
        mock_run.return_value = mock_process

        server = GitLabServer()

        # Test with different working directories
        working_dirs = [
            "/home/user/project",
            "/tmp/gitlab",
            "/var/www/html",
        ]

        for working_dir in working_dirs:
            server.execute_glab_command(["status"], working_dir)
            mock_run.assert_called_with(
                ["glab", "status"],
                capture_output=True,
                text=True,
                check=False,
                cwd=working_dir,
            )

        # Verify the number of calls
        assert mock_run.call_count == len(working_dirs)