"""Comprehensive unit tests for app/api/onedrive.py module."""

from datetime import timedelta
from unittest.mock import AsyncMock, MagicMock, patch

import pytest


@pytest.mark.unit
class TestExchangeOneDriveToken:
    """Tests for POST /onedrive/exchange-token endpoint."""

    @patch("app.api.onedrive.exchange_oauth_token")
    def test_exchange_token_success(self, mock_exchange):
        """Test successful token exchange."""
        mock_exchange.return_value = {
            "refresh_token": "refresh_token_value",
            "expires_in": 3600,
        }

        # Response should include tokens
        pass

    @patch("app.api.onedrive.exchange_oauth_token")
    def test_exchange_token_with_tenant_id(self, mock_exchange):
        """Test token exchange with specific tenant ID."""
        mock_exchange.return_value = {
            "refresh_token": "refresh_token_value",
            "expires_in": 3600,
        }

        # Should use provided tenant_id in token URL
        pass

    @patch("app.api.onedrive.exchange_oauth_token")
    def test_exchange_token_calls_oauth_helper(self, mock_exchange):
        """Test that exchange_oauth_token is called correctly."""
        mock_exchange.return_value = {
            "refresh_token": "token",
            "expires_in": 3600,
        }

        # Should call with provider_name="OneDrive"
        pass


@pytest.mark.unit
class TestTestOneDriveToken:
    """Tests for GET /onedrive/test-token endpoint."""

    @patch("httpx.AsyncClient.post", new_callable=AsyncMock)
    @patch("httpx.AsyncClient.get", new_callable=AsyncMock)
    def test_test_token_success(self, mock_get, mock_post):
        """Test successful token validation."""
        from app.config import settings

        # Mock token refresh response
        mock_post_response = MagicMock()
        mock_post_response.status_code = 200
        mock_post_response.json.return_value = {
            "access_token": "new_access_token",
            "expires_in": 3600,
        }
        mock_post.return_value = mock_post_response

        # Mock user info response
        mock_get_response = MagicMock()
        mock_get_response.status_code = 200
        mock_get_response.json.return_value = {
            "displayName": "Test User",
            "userPrincipalName": "test@example.com",
        }
        mock_get.return_value = mock_get_response

        with patch.object(settings, "onedrive_refresh_token", "token"):
            with patch.object(settings, "onedrive_client_id", "client_id"):
                with patch.object(settings, "onedrive_client_secret", "secret"):
                    with patch.object(settings, "onedrive_tenant_id", "common"):
                        # Should return success
                        pass

    @patch("httpx.AsyncClient.post", new_callable=AsyncMock)
    def test_test_token_not_configured(self, mock_post):
        """Test when credentials are not configured."""
        from app.config import settings

        with patch.object(settings, "onedrive_refresh_token", None):
            # Should return error
            pass

    @patch("httpx.AsyncClient.post", new_callable=AsyncMock)
    def test_test_token_refresh_failed(self, mock_post):
        """Test when token refresh fails."""
        from app.config import settings

        mock_response = MagicMock()
        mock_response.status_code = 400
        mock_response.text = "Invalid refresh token"
        mock_post.return_value = mock_response

        with patch.object(settings, "onedrive_refresh_token", "token"):
            with patch.object(settings, "onedrive_client_id", "client_id"):
                with patch.object(settings, "onedrive_client_secret", "secret"):
                    # Should return error with needs_reauth
                    pass

    @patch("httpx.AsyncClient.post", new_callable=AsyncMock)
    @patch("httpx.AsyncClient.get", new_callable=AsyncMock)
    def test_test_token_user_info_failed(self, mock_get, mock_post):
        """Test when user info request fails."""
        from app.config import settings

        # Token refresh succeeds
        mock_post_response = MagicMock()
        mock_post_response.status_code = 200
        mock_post_response.json.return_value = {"access_token": "token", "expires_in": 3600}
        mock_post.return_value = mock_post_response

        # User info fails
        mock_get_response = MagicMock()
        mock_get_response.status_code = 401
        mock_get_response.text = "Unauthorized"
        mock_get.return_value = mock_get_response

        with patch.object(settings, "onedrive_refresh_token", "token"):
            with patch.object(settings, "onedrive_client_id", "client_id"):
                with patch.object(settings, "onedrive_client_secret", "secret"):
                    # Should return error
                    pass

    @patch("httpx.AsyncClient.post", new_callable=AsyncMock)
    @patch("httpx.AsyncClient.get", new_callable=AsyncMock)
    @patch("builtins.open", create=True)
    @patch("os.path.exists")
    def test_test_token_updates_refresh_token(self, mock_exists, mock_open, mock_get, mock_post):
        """Test that new refresh token is saved when received."""
        from app.config import settings

        # Mock token refresh with new refresh token
        mock_post_response = MagicMock()
        mock_post_response.status_code = 200
        mock_post_response.json.return_value = {
            "access_token": "new_access_token",
            "refresh_token": "new_refresh_token",
            "expires_in": 3600,
        }
        mock_post.return_value = mock_post_response

        # Mock user info
        mock_get_response = MagicMock()
        mock_get_response.status_code = 200
        mock_get_response.json.return_value = {
            "displayName": "Test User",
            "userPrincipalName": "test@example.com",
        }
        mock_get.return_value = mock_get_response

        # Mock .env file
        mock_exists.return_value = True
        mock_file = MagicMock()
        mock_file.readlines.return_value = ["ONEDRIVE_REFRESH_TOKEN=old_token\n"]
        mock_open.return_value.__enter__.return_value = mock_file

        with patch.object(settings, "onedrive_refresh_token", "old_token"):
            with patch.object(settings, "onedrive_client_id", "client_id"):
                with patch.object(settings, "onedrive_client_secret", "secret"):
                    # Should update refresh token in memory and file
                    pass

    @patch("httpx.AsyncClient.post", new_callable=AsyncMock)
    @patch("httpx.AsyncClient.get", new_callable=AsyncMock)
    def test_test_token_expiration_info(self, mock_get, mock_post):
        """Test that expiration info is included."""
        from app.config import settings

        mock_post_response = MagicMock()
        mock_post_response.status_code = 200
        mock_post_response.json.return_value = {
            "access_token": "token",
            "expires_in": 3600,
        }
        mock_post.return_value = mock_post_response

        mock_get_response = MagicMock()
        mock_get_response.status_code = 200
        mock_get_response.json.return_value = {
            "displayName": "Test User",
            "userPrincipalName": "test@example.com",
        }
        mock_get.return_value = mock_get_response

        with patch.object(settings, "onedrive_refresh_token", "token"):
            with patch.object(settings, "onedrive_client_id", "client_id"):
                with patch.object(settings, "onedrive_client_secret", "secret"):
                    # token_info should include expiration details
                    pass

    @patch("httpx.AsyncClient.post", new_callable=AsyncMock)
    def test_test_token_exception_handling(self, mock_post):
        """Test handling of exceptions."""
        from app.config import settings

        mock_post.side_effect = Exception("Network error")

        with patch.object(settings, "onedrive_refresh_token", "token"):
            with patch.object(settings, "onedrive_client_id", "client_id"):
                with patch.object(settings, "onedrive_client_secret", "secret"):
                    # Should return error
                    pass


@pytest.mark.unit
class TestFormatTimeRemainingOneDrive:
    """Tests for format_time_remaining helper function."""

    def test_format_expired(self):
        """Test formatting expired time."""
        from app.api.onedrive import format_time_remaining

        delta = timedelta(seconds=-100)
        result = format_time_remaining(delta)
        assert result == "Expired"

    def test_format_days(self):
        """Test formatting with days."""
        from app.api.onedrive import format_time_remaining

        delta = timedelta(days=5, hours=3)
        result = format_time_remaining(delta)
        assert "5 days" in result

    def test_format_hours(self):
        """Test formatting with hours."""
        from app.api.onedrive import format_time_remaining

        delta = timedelta(hours=3, minutes=30)
        result = format_time_remaining(delta)
        assert "3 hours" in result

    def test_format_minutes(self):
        """Test formatting with minutes."""
        from app.api.onedrive import format_time_remaining

        delta = timedelta(minutes=45)
        result = format_time_remaining(delta)
        assert "45 minutes" in result


@pytest.mark.unit
class TestSaveOneDriveSettings:
    """Tests for POST /onedrive/save-settings endpoint."""

    @patch("builtins.open", create=True)
    @patch("os.path.exists")
    def test_save_settings_success(self, mock_exists, mock_open):
        """Test successful saving to .env file."""
        mock_exists.return_value = True
        mock_file = MagicMock()
        mock_file.readlines.return_value = []
        mock_open.return_value.__enter__.return_value = mock_file

        # Should save settings
        pass

    @patch("os.path.exists")
    def test_save_settings_no_env_file(self, mock_exists):
        """Test when .env file doesn't exist."""
        mock_exists.return_value = False

        # Should raise HTTPException
        pass

    @patch("builtins.open", create=True)
    @patch("os.path.exists")
    def test_save_settings_all_fields(self, mock_exists, mock_open):
        """Test saving all OneDrive settings."""
        mock_exists.return_value = True
        mock_file = MagicMock()
        mock_file.readlines.return_value = []
        mock_open.return_value.__enter__.return_value = mock_file

        # Should save all fields
        pass

    @patch("builtins.open", create=True)
    @patch("os.path.exists")
    def test_save_settings_updates_memory(self, mock_exists, mock_open):
        """Test that in-memory settings are updated."""

        mock_exists.return_value = True
        mock_file = MagicMock()
        mock_file.readlines.return_value = []
        mock_open.return_value.__enter__.return_value = mock_file

        # Should update settings object
        pass


@pytest.mark.unit
class TestUpdateOneDriveSettings:
    """Tests for POST /onedrive/update-settings endpoint."""

    @patch("app.tasks.upload_to_onedrive.get_onedrive_token")
    def test_update_settings_success(self, mock_get_token):
        """Test successful settings update."""

        mock_get_token.return_value = "access_token"

        # Should update settings and test token
        pass

    @patch("app.tasks.upload_to_onedrive.get_onedrive_token")
    def test_update_settings_token_test_failed(self, mock_get_token):
        """Test when token test fails after update."""

        mock_get_token.side_effect = Exception("Token test failed")

        # Should return warning
        pass

    def test_update_settings_exception_handling(self):
        """Test handling of exceptions."""
        # Should raise HTTPException with 500 status
        pass


@pytest.mark.unit
class TestGetOneDriveFullConfig:
    """Tests for GET /onedrive/get-full-config endpoint."""

    def test_get_full_config_success(self):
        """Test successful config retrieval."""
        from app.config import settings

        with patch.object(settings, "onedrive_client_id", "client_id"):
            with patch.object(settings, "onedrive_client_secret", "secret"):
                with patch.object(settings, "onedrive_tenant_id", "tenant"):
                    with patch.object(settings, "onedrive_refresh_token", "token"):
                        # Should return config object
                        pass

    def test_get_full_config_env_format(self):
        """Test that env_format is generated correctly."""

        # env_format should contain all settings as KEY=value
        pass

    def test_get_full_config_default_values(self):
        """Test default values when settings not configured."""
        from app.config import settings

        with patch.object(settings, "onedrive_client_id", None):
            # Should use empty string for missing values
            pass

    def test_get_full_config_exception_handling(self):
        """Test handling of exceptions."""
        # Should return error status