import { NextResponse } from 'next/server';

export async function GET() {
  try {
    // Check if we have the required environment variables
    const token = process.env.ROCKET_CHAT_TOKEN;
    const userId = process.env.ROCKET_CHAT_USER_ID;
    const baseUrl = process.env.NEXT_PUBLIC_IFRAME_PAROLE_URL?.split('/channel')[0];
    
    if (!token || !userId) {
      return NextResponse.json({ 
        error: 'Missing Rocket.Chat admin credentials',
        hasToken: !!token,
        hasUserId: !!userId 
      }, { status: 500 });
    }
    
    if (!baseUrl) {
      return NextResponse.json({ 
        error: 'Missing Rocket.Chat base URL',
        iframeUrl: process.env.NEXT_PUBLIC_IFRAME_PAROLE_URL
      }, { status: 500 });
    }
    
    // Test a simple API call to verify credentials
    const adminHeaders = {
      'X-Auth-Token': token,
      'X-User-Id': userId,
      'Content-Type': 'application/json'
    };
    
    // Get server info (public endpoint that still requires admin auth)
    const infoResponse = await fetch(`${baseUrl}/api/v1/info`, {
      method: 'GET',
      headers: adminHeaders
    });
    
    if (!infoResponse.ok) {
      return NextResponse.json({ 
        error: 'Failed to connect to Rocket.Chat API', 
        status: infoResponse.status,
        statusText: infoResponse.statusText,
        baseUrl
      }, { status: 500 });
    }
    
    const infoData = await infoResponse.json();
    
    // Try to list users (needs admin permissions)
    const usersResponse = await fetch(`${baseUrl}/api/v1/users.list?count=5`, {
      method: 'GET',
      headers: adminHeaders
    });
    
    const usersResult = await usersResponse.json();
    
    return NextResponse.json({
      success: true,
      serverInfo: {
        version: infoData.version,
        serverRunning: infoData.success
      },
      usersCount: usersResult.users?.length || 0,
      baseUrl
    });
  } catch (error) {
    return NextResponse.json({ 
      error: 'Error testing Rocket.Chat connection',
      message: error instanceof Error ? error.message : 'Unknown error'
    }, { status: 500 });
  }
}