/**
 * Server Info Diagnostic Tool
 * Provides health status and connection testing
 */

import { getPayloadConfig } from '../types/config.js';
import { testConnection } from '../client.js';

export async function serverInfoTool() {
    const config = getPayloadConfig();
    const startTime = Date.now();

    let connectionStatus = 'unknown';
    let connectionError = null;
    let userInfo = null;

    try {
        await testConnection();
        connectionStatus = 'connected';

        // Try to get user info
        try {
            const PayloadModule = await import('@mcp-forge/payload-api') as any;
            const PayloadAPI = PayloadModule.default || PayloadModule;
            const client = new PayloadAPI({
                baseURL: config.baseURL,
                apiToken: config.apiToken,
            });
            userInfo = await client.users.retrieveCurrent();
        } catch (err: any) {
            // Non-fatal - connection works but user endpoint might not
        }
    } catch (error: any) {
        connectionStatus = 'error';
        connectionError = error.message;
    }

    const responseTime = Date.now() - startTime;

    return {
        server: 'payload-mcp',
        version: '1.0.2',
        status: connectionStatus === 'connected' ? 'healthy' : 'unhealthy',
        connection: {
            status: connectionStatus,
            baseURL: config.baseURL,
            authenticated: config.apiToken ? 'configured' : 'missing',
            responseTime: `${responseTime}ms`,
            error: connectionError,
        },
        currentUser: userInfo ? {
            id: userInfo.id,
            email: userInfo.email,
        } : null,
        tools_available: [
            'articles_list',
            'articles_get',
            'articles_create',
            'articles_update',
            'articles_delete',
            'sites_list',
            'sites_get',
            'sites_create',
            'media_list',
            'media_upload',
            'media_get',
            'search',
            'server_info',
        ],
        configuration: {
            baseURL: config.baseURL,
            timeout: config.timeout,
            maxRetries: config.maxRetries,
        },
        troubleshooting: {
            common_issues: [
                'If connection fails, verify PAYLOAD_API_URL is correct',
                'If authentication fails, check PAYLOAD_API_TOKEN is valid and not expired',
                'If timeout errors occur, check network connectivity to Payload server',
                'JWT tokens typically expire after 2 hours - refresh if needed',
            ],
            support: 'Check Payload CMS documentation for API details',
        },
    };
}