import { NextResponse } from 'next/server';
import { getPayload } from 'payload';
import configPromise from '../../../payload.config';
import { upsertProductVector } from '../../../src/lib/qdrant';

export const dynamic = 'force-dynamic';
export const maxDuration = 120;

/**
 * Internal endpoint called by the warmup script on every dev boot.
 * Syncs posts, pages, and products from Payload CMS into Qdrant.
 * NOT for form entries, media, or users.
 */
export async function GET() {
  const results = { products: 0, posts: 0, pages: 0, errors: [] as string[] };

  try {
    const payload = await getPayload({ config: configPromise });

    // ── Products ──
    const { docs: products } = await payload.find({
      collection: 'products',
      limit: 1000,
      depth: 0,
      where: { _status: { equals: 'published' } },
    });

    for (const product of products) {
      try {
        const contentText = `${product.title} - SKU: ${product.sku}\n${product.description || ''}`;
        await upsertProductVector(String(product.id), contentText, {
          type: 'product',
          data: {
            title: product.title,
            sku: product.sku,
            slug: product.slug,
            description: product.description,
          },
        });
        results.products++;
      } catch (e: any) {
        results.errors.push(`product:${product.sku}: ${e.message}`);
      }
    }

    // ── Posts ──
    const { docs: posts } = await payload.find({
      collection: 'posts',
      limit: 1000,
      depth: 0,
      where: { _status: { equals: 'published' } },
    });

    for (const post of posts) {
      try {
        const contentText = [
          `Blog-Artikel: ${post.title}`,
          post.excerpt ? `Zusammenfassung: ${post.excerpt}` : '',
          post.category ? `Kategorie: ${post.category}` : '',
        ]
          .filter(Boolean)
          .join('\n');

        await upsertProductVector(`post_${post.id}`, contentText, {
          type: 'knowledge',
          content: contentText,
          data: {
            title: post.title,
            slug: post.slug,
          },
        });
        results.posts++;
      } catch (e: any) {
        results.errors.push(`post:${post.slug}: ${e.message}`);
      }
    }

    // ── Pages ──
    const { docs: pages } = await payload.find({
      collection: 'pages',
      limit: 1000,
      depth: 0,
      where: { _status: { equals: 'published' } },
    });

    for (const page of pages) {
      try {
        const contentText = [
          `Seite: ${page.title}`,
          page.excerpt ? `Beschreibung: ${page.excerpt}` : '',
        ]
          .filter(Boolean)
          .join('\n');

        await upsertProductVector(`page_${page.id}`, contentText, {
          type: 'knowledge',
          content: contentText,
          data: {
            title: page.title,
            slug: page.slug,
          },
        });
        results.pages++;
      } catch (e: any) {
        results.errors.push(`page:${page.slug}: ${e.message}`);
      }
    }

    console.log(
      `[Qdrant Sync] ✅ ${results.products} products, ${results.posts} posts, ${results.pages} pages synced`,
    );

    return NextResponse.json({
      success: true,
      synced: {
        products: results.products,
        posts: results.posts,
        pages: results.pages,
      },
      errors: results.errors.length > 0 ? results.errors : undefined,
    });
  } catch (error: any) {
    console.error('[Qdrant Sync] ❌ Fatal error:', error);
    return NextResponse.json({ error: error.message }, { status: 500 });
  }
}