import type { APIRoute } from 'astro';

const PB_POCKETBASE_URL = import.meta.env.PB_POCKETBASE_URL || 'http://127.0.0.1:8090';
const POCKETBASE_ID_REGEX = /^[a-z0-9]{15}$/;

function jsonResponse(data: object, status = 200): Response {
  return new Response(JSON.stringify(data), {
    status,
    headers: { 'Content-Type': 'application/json', 'Access-Control-Allow-Origin': '*' }
  });
}

export const GET: APIRoute = async ({ url }) => {
  try {
    const postId = url.searchParams.get('postId');

    if (!postId || !POCKETBASE_ID_REGEX.test(postId)) {
      return jsonResponse({ error: 'Некорректный postId' }, 400);
    }

    // Получаем пост
    let post;
    try {
      post = await fetch(`${PB_POCKETBASE_URL}/api/collections/posts/records/${postId}`, {
        headers: { 'Content-Type': 'application/json' }
      }).then(r => r.json());
    } catch {
      return jsonResponse({ error: 'Пост не найден' }, 404);
    }

    if (!post || !post.id) {
      return jsonResponse({ error: 'Пост не найден' }, 404);
    }

    const now = new Date();
    const todayStr = now.toISOString().split('T')[0];

    let { views = 0, today_views = 0, last_reset = '' } = post;

    // Если новый день - сбрасываем today_views
    if (last_reset !== todayStr) {
      today_views = 0;
      last_reset = todayStr;
    }

    // Инкремент
    views++;
    today_views++;

    // Обновляем пост
    await fetch(`${PB_POCKETBASE_URL}/api/collections/posts/records/${postId}`, {
      method: 'PATCH',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ views, today_views, last_reset })
    });

    return jsonResponse({ views, today_views }, 200);

  } catch (error) {
    console.error('[Increment Views] Error:', error);
    return jsonResponse({ error: 'Внутренняя ошибка сервера' }, 500);
  }
};