import { NextResponse } from 'next/server';
import { z } from 'zod';
import { prisma } from '@/lib/prisma';
import { requireAdmin } from '@/lib/require-admin';

const postInput = z.object({
  slug: z.string().min(1),
  authorId: z.string(),
  tagIds: z.array(z.string()).default([]),
  coverImage: z.string().optional(),
  featured: z.boolean().default(false),
  published: z.boolean().default(false),
  readingMinutes: z.number().int().nullable().optional(),
  translations: z.object({
    fr: z.object({ title: z.string(), excerpt: z.string(), content: z.string() }),
    ar: z.object({ title: z.string(), excerpt: z.string(), content: z.string() })
  })
});

export async function GET() {
  const { response } = await requireAdmin();
  if (response) return response;
  const posts = await prisma.post.findMany({
    include: { translations: true, author: true, tags: true },
    orderBy: { createdAt: 'desc' }
  });
  return NextResponse.json(posts);
}

export async function POST(req: Request) {
  const { response } = await requireAdmin();
  if (response) return response;

  const parsed = postInput.safeParse(await req.json().catch(() => null));
  if (!parsed.success) {
    return NextResponse.json({ error: 'invalid_payload', issues: parsed.error.issues }, { status: 400 });
  }
  const data = parsed.data;

  const post = await prisma.post.create({
    data: {
      slug: data.slug,
      authorId: data.authorId,
      coverImage: data.coverImage,
      featured: data.featured,
      published: data.published,
      publishedAt: data.published ? new Date() : null,
      readingMinutes: data.readingMinutes ?? null,
      tags: { connect: data.tagIds.map((id) => ({ id })) },
      translations: {
        create: [
          { locale: 'fr', ...data.translations.fr },
          { locale: 'ar', ...data.translations.ar }
        ]
      }
    }
  });
  return NextResponse.json(post, { status: 201 });
}