import { NextResponse } from 'next/server';
import { getServerSession } from 'next-auth';
import { authOptions } from '@/app/api/auth/[...nextauth]/route';
import { prisma } from '@/lib/prisma';
import { Buffer } from 'buffer';

export async function POST() {
  try {
    const session = await getServerSession(authOptions);
    if (!session?.user) {
      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
    }

    const nextcloudUrl = process.env.NEXTCLOUD_URL;
    const adminUsername = process.env.NEXTCLOUD_ADMIN_USERNAME;
    const adminPassword = process.env.NEXTCLOUD_ADMIN_PASSWORD;

    if (!nextcloudUrl || !adminUsername || !adminPassword) {
      return NextResponse.json({ error: 'Nextcloud configuration missing' }, { status: 500 });
    }

    const username = `cube-${session.user.id}`;
    const userId = session.user.id;

    // Get or create WebDAV credentials
    const password = await getWebDAVCredentials(nextcloudUrl, username, adminUsername, adminPassword, userId);

    // Ensure folder structure exists
    await ensureFolderStructure(nextcloudUrl, username, password);

    // Store initialization state in session
    const updatedSession = {
      ...session,
      user: {
        ...session.user,
        nextcloudInitialized: true
      }
    };

    return NextResponse.json({ 
      success: true,
      message: 'Nextcloud initialized successfully'
    });
  } catch (error) {
    console.error('Nextcloud initialization failed:', error);
    return NextResponse.json({ 
      error: 'Failed to initialize Nextcloud',
      details: error instanceof Error ? error.message : 'Unknown error'
    }, { status: 500 });
  }
}

// Helper functions from status/route.ts
async function getWebDAVCredentials(nextcloudUrl: string, username: string, adminUsername: string, adminPassword: string, userId: string) {
  // ... existing getWebDAVCredentials implementation ...
}

async function ensureFolderStructure(nextcloudUrl: string, username: string, password: string) {
  // ... existing ensureFolderStructure implementation ...
}