/**
 * OAuth Plugin Integration Tests
 *
 * These integration tests cover critical end-to-end OAuth workflows
 * including JWT token generation and multiple provider scenarios.
 *
 * NOTE: These tests are placeholders until the OAuth plugin implementation is complete.
 * Once Task Groups 1-6 are implemented, these tests should be completed with actual assertions.
 */

import { createMockJwtAuthPlugin } from "./helpers/mockJwtAuthPlugin";
import { afterAllTests, beforeEachTest } from "./helpers/testDatabase";

describe("OAuth Plugin Integration Tests", () => {
    let mockJwtAuth: any;

    beforeEach(async () => {
        await beforeEachTest();
        mockJwtAuth = createMockJwtAuthPlugin("test-secret");
    });

    afterAll(async () => {
        await afterAllTests();
    });

    describe("End-to-End GitHub OAuth Flow", () => {
        it("should complete full GitHub OAuth flow with JWT token generation", async () => {
            // TODO: Implement after OAuth plugin handlers are created
            // 1. Call initiate handler (/oauth/github/initiate)
            // 2. Verify state parameter is generated
            // 3. Verify session is stored in database
            // 4. Verify redirect to GitHub authorization URL
            // 5. Call callback handler with code and state
            // 6. Verify token exchange occurs
            // 7. Verify user profile fetch
            // 8. Verify onAuthSuccess callback is invoked with context
            // 9. Verify JWT token is generated via mockJwtAuth.createToken()
            // 10. Verify JWT token is returned to client

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });

        it("should handle GitHub OAuth initiate flow", async () => {
            // TODO: Test initiate handler independently
            // - Verify state generation
            // - Verify session creation
            // - Verify redirect URL format

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });

        it("should handle GitHub OAuth callback with valid state", async () => {
            // TODO: Test callback handler with valid state
            // - Create session with known state
            // - Call callback with matching state
            // - Verify token exchange
            // - Verify JWT generation

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });
    });

    describe("End-to-End Google OAuth Flow", () => {
        it("should complete full Google OAuth flow with JWT token generation", async () => {
            // TODO: Implement after OAuth plugin handlers are created
            // Same flow as GitHub but with Google provider

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });
    });

    describe("Response Type Handling", () => {
        it("should return JSON response when response_type=json", async () => {
            // TODO: Test callback with response_type=json query parameter
            // Expected response format: { user: {...}, token: 'jwt_token' }
            // Verify:
            // - Response is JSON (not redirect)
            // - Contains user object
            // - Contains valid JWT token

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });

        it("should return token in URL fragment by default", async () => {
            // TODO: Test callback without response_type parameter
            // Expected: Redirect to https://app.com/callback#token=jwt_token
            // Verify:
            // - Response is 302 redirect
            // - Token is in URL hash fragment
            // - Token is valid JWT

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });

        it("should return token in query parameter when configured", async () => {
            // TODO: Test callback with query parameter format
            // Expected: Redirect to https://app.com/callback?token=jwt_token
            // Verify:
            // - Response is 302 redirect
            // - Token is in query parameter
            // - Token is valid JWT

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });
    });

    describe("Multiple Provider Linking", () => {
        it("should link GitHub account to user", async () => {
            // TODO: Test linking first provider to new user
            // - Complete OAuth flow
            // - Verify user creation in onAuthSuccess
            // - Verify OAuth connection stored (if storeTokens enabled)
            // - Verify JWT token returned

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });

        it("should link Google account to existing user with GitHub", async () => {
            // TODO: Test linking second provider to existing user
            // - Create user with GitHub connection
            // - Complete Google OAuth flow with same email
            // - Verify both connections exist for user
            // - Verify JWT token returned

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });

        it("should retrieve all OAuth connections for user", async () => {
            // TODO: Test ctx.plugins.oauth.getConnections()
            // - Create user with GitHub and Google connections
            // - Call getConnections(userId)
            // - Verify returns array with both connections

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });

        it("should delete OAuth connection", async () => {
            // TODO: Test ctx.plugins.oauth.deleteConnection()
            // - Create user with OAuth connection
            // - Call deleteConnection(userId, provider)
            // - Verify connection is removed
            // - Verify other connections remain intact

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });
    });

    describe("Token Storage", () => {
        it("should store OAuth tokens when storeTokens=true", async () => {
            // TODO: Test token storage feature
            // - Configure plugin with storeTokens: true
            // - Complete OAuth flow
            // - Verify OAuth tokens are encrypted and stored
            // - Verify tokens can be retrieved via getConnection()

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });

        it("should not store OAuth tokens when storeTokens=false", async () => {
            // TODO: Test auth-only mode
            // - Configure plugin with storeTokens: false (or omit)
            // - Complete OAuth flow
            // - Verify OAuth tokens are NOT stored in database
            // - Verify JWT token is still generated and returned

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });
    });

    describe("Session Management", () => {
        it("should create temporary session on initiate", async () => {
            // TODO: Test session creation
            // - Call initiate handler
            // - Verify session document exists in oauth_sessions collection
            // - Verify session contains state, provider, sessionId

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });

        it("should delete session after successful callback", async () => {
            // TODO: Test session cleanup
            // - Create session
            // - Complete OAuth callback
            // - Verify session is deleted from database

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });

        it("should expire sessions after TTL", async () => {
            // TODO: Test MongoDB TTL index behavior
            // - Create session with createdAt in past
            // - Wait for TTL to expire (or mock time)
            // - Verify session is automatically deleted

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });
    });

    describe("Error Scenarios", () => {
        it("should handle invalid state parameter", async () => {
            // TODO: Test CSRF protection
            // - Create session with known state
            // - Call callback with different state
            // - Verify error response
            // - Verify onAuthError is called

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });

        it("should handle missing state parameter", async () => {
            // TODO: Test missing state
            // - Call callback without state parameter
            // - Verify error response

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });

        it("should handle OAuth provider access_denied error", async () => {
            // TODO: Test user denies authorization
            // - Call callback with error=access_denied
            // - Verify user-friendly error handling
            // - Verify onAuthError callback is invoked

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });

        it("should handle invalid authorization code", async () => {
            // TODO: Test invalid code from provider
            // - Mock token exchange to fail
            // - Verify error handling
            // - Verify onAuthError callback

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });

        it("should handle JWT generation failure", async () => {
            // TODO: Test JWT Auth Plugin failure
            // - Use createFailingMockJwtAuthPlugin()
            // - Complete OAuth flow
            // - Verify error is caught and handled gracefully
            // - Verify onAuthError is called with jwt_generation_failed code

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });

        it("should handle expired session", async () => {
            // TODO: Test expired session scenario
            // - Create expired session
            // - Call callback with valid state
            // - Verify error response (session not found)

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });
    });

    describe("JWT Token Validation", () => {
        it("should generate valid JWT token with user data", async () => {
            // TODO: Test JWT token structure
            // - Complete OAuth flow
            // - Extract JWT token from response
            // - Decode token
            // - Verify token contains userId, email, roles
            // - Verify token expiration is set

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });

        it("should include roles in JWT token", async () => {
            // TODO: Test role assignment in JWT
            // - Configure onAuthSuccess to assign specific roles
            // - Complete OAuth flow
            // - Decode JWT token
            // - Verify roles array contains expected roles

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });
    });

    describe("Context Integration", () => {
        it("should pass Flink context to onAuthSuccess callback", async () => {
            // TODO: Test context passing
            // - Create onAuthSuccess callback that uses ctx parameter
            // - Verify ctx.repos is available
            // - Verify ctx.plugins.jwtAuth is available
            // - Complete OAuth flow and verify callback receives context

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });

        it("should allow access to repositories in callback", async () => {
            // TODO: Test repository access in callback
            // - Access ctx.repos.userRepo in onAuthSuccess
            // - Create or update user using repository
            // - Verify database operations work

            pending("Waiting for OAuth plugin implementation (Task Groups 1-6)");
        });
    });
});