import { NextRequest, NextResponse } from 'next/server';
import  ZarinPal  from 'zarinpal-node-sdk';
import { getDatabase } from '@/lib/db';

const zarinpal = new ZarinPal({
  merchantId: process.env.ZARINPAL_MERCHANT_ID || 'test-merchant-id',
  sandbox: process.env.NODE_ENV !== 'production',
});

export async function POST(request: NextRequest) {
  try {
    const body = await request.json();
    const { albumId, amount, customerName, email, phoneNumber } = body;

    if (!albumId || !amount) {
      return NextResponse.json(
        { error: 'Album ID and amount are required' },
        { status: 400 }
      );
    }

    // Clean phone number: remove +98, spaces, and any non-digits
    // ZarinPal expects format: 09XXXXXXXXX (11 digits starting with 0)
    const cleanPhone = phoneNumber.replace(/\D/g, ''); // Remove all non-digits
    const mobileNumber = cleanPhone.startsWith('98')
      ? '0' + cleanPhone.slice(2)  // +98 9390084053 -> 09390084053
      : cleanPhone.startsWith('9')
      ? '0' + cleanPhone           // 9390084053 -> 09390084053
      : cleanPhone;                // Already in correct format

    // Get the base URL for callback
    const protocol = request.headers.get('x-forwarded-proto') || 'http';
    const host = request.headers.get('host') || 'localhost:3000';
    const callback_url = `${protocol}://${host}/payment/callback`;

    // Initiate payment with ZarinPal
    const response = await zarinpal.payments.create({
      amount: amount,
      callback_url: callback_url,
      description: `Purchase album: ${albumId}`,
      mobile: mobileNumber,
      email: email,
    });

    if (response.data && response.data.code === 100) {
      const authority = response.data.authority;

      // Store payment authority in database
      const db = getDatabase();
      db.prepare(`
        INSERT INTO payment_authorities (authority, albumId, amount, customerName, email, phoneNumber, status)
        VALUES (?, ?, ?, ?, ?, ?, 'pending')
      `).run(authority, albumId, amount, customerName, email, mobileNumber);

      return NextResponse.json({
        success: true,
        authority: authority,
        paymentUrl: `https://sandbox.zarinpal.com/pg/StartPay/${authority}`,
      });
    } else {
      return NextResponse.json(
        { error: 'Failed to initiate payment', code: response.data?.code },
        { status: 400 }
      );
    }
  } catch (error: any) {
    console.error('Payment initiation error:', error);
    return NextResponse.json(
      { error: error.message || 'Failed to initiate payment' },
      { status: 500 }
    );
  }
}