import { NextRequest, NextResponse } from 'next/server';

interface EventData {
  name: string;
  phone: string;
  guests: string;
  date: string;
  time: string;
  info: string;
  eventType: string;
}

const formattedDate = (date: string) => {
  const [year, month, day] = date.split('-');
  const dateObj = new Date(+year, +month - 1, +day);
  const months = [
    'яну',
    'фев',
    'март',
    'апр',
    'май',
    'юни',
    'юли',
    'авг',
    'септ',
    'окт',
    'ноем',
    'дек'
  ];
  const monthName = months[dateObj.getMonth()];
  const dayName = dateObj.toLocaleString('bg-BG', { weekday: 'short' });
  return `${dayName}, ${day} ${monthName}`;
};

export async function POST(req: NextRequest) {
  try {
    const webhookUrl = process.env.DISCORD_WEBHOOK_URL;

    // Handle the case where webhookUrl is not set
    if (!webhookUrl) {
      console.error('Discord webhook URL is not set in environment variables.');
      return NextResponse.json(
        { message: 'Server error: Discord webhook URL is not configured.' },
        { status: 500 }
      );
    }

    const data: EventData = await req.json();

    // Validate required fields
    const { name, phone, guests, date, time, info, eventType } = data;

    if (!phone || !date || !time) {
      return NextResponse.json(
        { message: 'Bad request: Missing required event data.' },
        { status: 400 }
      );
    }

    // Construct the plain text message content
    const messageContent = {
      username: 'Reservation Bot',
      avatar_url: 'https://www.vkashti.bar/logo.png',
      content: `
**${name || 'Анонимен'} направи резервация за ${guests} гости за ${formattedDate(date)} в ${time} часа.**
${phone ?? 'Без номер'} | ${info || 'Без информация'} | ${eventType}

-# Дай peeking face, за да видиш резервациите на този ден. 🫣
-# Дай палец нагоре, ако е ок. 👍
-# Ще пратя СМС на клиента и ще добавя резервацията в календара. 📅
      `
    };

    // Send the message to Discord via the webhook
    const discordResponse = await fetch(webhookUrl, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json'
      },
      body: JSON.stringify(messageContent)
    });

    if (!discordResponse.ok) {
      console.error(
        'Failed to send message to Discord webhook:',
        discordResponse.statusText
      );
      return NextResponse.json(
        { message: 'Error sending message to Discord.' },
        { status: 500 }
      );
    }

    return NextResponse.json({ message: 'Success' }, { status: 200 });
  } catch (error) {
    console.error('Error:', error);
    return NextResponse.json({ message: 'Server error.' }, { status: 500 });
  }
}