import { NextRequest, NextResponse } from "next/server";
import { prisma } from "@/lib/prisma";
import { existsSync, readFileSync } from "fs";
import path from "path";
import mime from "mime-types";

const AVATARS_DIR = path.join(process.env.UPLOAD_DIR || "./uploads", "avatars");

export async function GET(
  _request: NextRequest,
  { params }: { params: { id: string } }
) {
  const user = await prisma.user.findUnique({
    where: { id: params.id },
    select: { avatarPath: true },
  });

  if (!user || !user.avatarPath) {
    return NextResponse.json({ error: "Avatar introuvable" }, { status: 404 });
  }

  const fullPath = path.join(AVATARS_DIR, user.avatarPath);
  if (!existsSync(fullPath)) {
    return NextResponse.json({ error: "Fichier avatar introuvable" }, { status: 404 });
  }

  const buffer = readFileSync(fullPath);
  const mimeType = mime.lookup(user.avatarPath) || "image/png";

  return new NextResponse(buffer, {
    headers: {
      "Content-Type": mimeType,
      "Cache-Control": "public, max-age=3600",
    },
  });
}