import { NextRequest, NextResponse } from "next/server";
import { prisma } from "@/lib/db";
import { encrypt, decrypt } from "@/lib/utils/encryption";
import { hasApiKeyFromEnv } from "@/lib/utils/apiKey";

const SERVICES = ["anymailfinder", "apify", "vayne", "airscale", "googlemaps"] as const;

export async function GET() {
  try {
    const creds = await prisma.apiCredential.findMany();
    const result: Record<string, boolean> = {};
    for (const svc of SERVICES) {
      result[svc] = hasApiKeyFromEnv(svc) || creds.some(c => c.service === svc && c.value);
    }
    return NextResponse.json(result);
  } catch (err) {
    console.error("GET /api/credentials error:", err);
    return NextResponse.json({ anymailfinder: false, apify: false, vayne: false, airscale: false, googlemaps: false });
  }
}

export async function POST(req: NextRequest) {
  try {
    const body = await req.json() as Record<string, string>;
    for (const [service, value] of Object.entries(body)) {
      if (!SERVICES.includes(service as typeof SERVICES[number])) continue;
      if (value === null || value === undefined) continue;
      await prisma.apiCredential.upsert({
        where: { service },
        create: { service, value: value ? encrypt(value) : "" },
        update: { value: value ? encrypt(value) : "" },
      });
    }
    return NextResponse.json({ ok: true });
  } catch (err) {
    console.error("POST /api/credentials error:", err);
    return NextResponse.json({ error: "Failed to save credentials" }, { status: 500 });
  }
}

// GET a specific decrypted value (for internal API use only)
export async function PUT(req: NextRequest) {
  try {
    const { service } = await req.json() as { service: string };
    const cred = await prisma.apiCredential.findUnique({ where: { service } });
    if (!cred) return NextResponse.json({ value: null });
    return NextResponse.json({ value: decrypt(cred.value) });
  } catch (err) {
    console.error("PUT /api/credentials error:", err);
    return NextResponse.json({ error: "Failed" }, { status: 500 });
  }
}