import { NextResponse } from "next/server";
import { prisma } from "@/lib/prisma";
import { writeFile, mkdir } from "fs/promises";
import { join } from "path";
import { existsSync } from "fs";

export async function POST(req: Request) {
  try {
    const formData = await req.formData();
    const file = formData.get("file") as File;
    
    if (!file) {
      return NextResponse.json({ success: false, error: "No file received." }, { status: 400 });
    }

    const bytes = await file.arrayBuffer();
    const buffer = Buffer.from(bytes);

    // Create unique filename
    const uniqueSuffix = Date.now() + "-" + Math.round(Math.random() * 1e9);
    const originalName = file.name.replace(/[^a-zA-Z0-9.-]/g, "_");
    const filename = `${uniqueSuffix}-${originalName}`;
    
    const uploadDir = join(process.cwd(), "public", "uploads");
    if (!existsSync(uploadDir)) {
      await mkdir(uploadDir, { recursive: true });
    }
    
    const path = join(uploadDir, filename);
    await writeFile(path, buffer);

    const url = `/uploads/${filename}`;

    const media = await prisma.media.create({
      data: {
        filename,
        url,
        mimeType: file.type,
        size: file.size,
        originalName: originalName,
        alt: originalName,
      }
    });

    return NextResponse.json({ success: true, media });
  } catch (error: any) {
    console.error("Upload Error:", error);
    return NextResponse.json({ success: false, error: error.message }, { status: 500 });
  }
}