import { NextResponse } from "next/server";
import { requireUser } from "@/lib/auth";
import { db } from "@/lib/db";
import { decrypt, encrypt } from "@/lib/crypto";
import { createUserWebhook, deleteUserWebhook, getMemosIdentity } from "@/lib/memos";
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,base_url,token_encrypted,remote_user,webhook_mode,webhook_remote_name FROM sources WHERE id=? AND user_id=?").get(id, user.id) as { id: number; base_url: string; token_encrypted: string; remote_user: string | null; webhook_mode: string; webhook_remote_name: string | null } | undefined;
    if (!source) return NextResponse.json({ error: "Not found" }, { status: 404 });
    if (source.webhook_mode === "signed") {
      const token = decrypt(source.token_encrypted); const identity = source.remote_user ? { name: source.remote_user } : await getMemosIdentity(source.base_url, token); const pathSecret = createWebhookSecret(); const signingSecret = createWebhookSecret(); const publicOrigin = (process.env.NEXT_PUBLIC_APP_URL || new URL(request.url).origin).replace(/\/$/, "");
      const remote = await createUserWebhook(source.base_url, token, identity.name, { url: `${publicOrigin}/api/sync/webhook/${id}/${pathSecret}`, displayName: "Mebbling", signingSecret });
      try { if (source.webhook_remote_name) await deleteUserWebhook(source.base_url, token, identity.name, source.webhook_remote_name); }
      catch (error) { try { await deleteUserWebhook(source.base_url, token, identity.name, remote.name); } catch {} throw error; }
      db.prepare("UPDATE sources SET webhook_secret_hash=?,webhook_remote_name=?,webhook_signing_secret_encrypted=? WHERE id=?").run(webhookSecretHash(pathSecret), remote.name, encrypt(signingSecret), id);
      return NextResponse.json({ rotated: true });
    }
    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 }); }
}