import { NextResponse } from "next/server";
import { requireUser } from "@/lib/auth";
import { db } from "@/lib/db";
import { createWebhookSecret, webhookSecretHash } from "@/lib/webhook";
import { requireSameOrigin } from "@/lib/security";

export async function POST(request: Request, { params }: { params: Promise<{ id: string }> }) {
  try {
    requireSameOrigin(request); const user = await requireUser(); const { id: rawId } = await params; const id = Number(rawId);
    const source = db.prepare("SELECT id,webhook_mode FROM sources WHERE id=? AND user_id=?").get(id, user.id) as { id: number; webhook_mode: string } | undefined;
    if (!source) return NextResponse.json({ error: "Not found" }, { status: 404 });
    if (source.webhook_mode === "signed") return NextResponse.json({ error: "這個 Webhook 已由 Memos 自動管理；請重新連接來源以重新建立。" }, { status: 409 });
    const secret = createWebhookSecret();
    db.prepare("UPDATE sources SET webhook_secret_hash=? WHERE id=?").run(webhookSecretHash(secret), id);
    const publicOrigin = (process.env.NEXT_PUBLIC_APP_URL || new URL(request.url).origin).replace(/\/$/, "");
    return NextResponse.json({ url: `${publicOrigin}/api/sync/webhook/${id}/${secret}` });
  } catch { return NextResponse.json({ error: "Unauthorized" }, { status: 401 }); }
}