import type { BackgroundJob } from "../../web/src/server/jobs/queue";

function requiredPayloadString(job: BackgroundJob, key: string): string {
  const value = job.payload[key];
  if (typeof value !== "string" || !value) {
    throw new Error(`Invalid scheduled invoice job payload: ${key}`);
  }
  return value;
}

export async function sendScheduledInvoice(job: BackgroundJob) {
  const appUrl =
    process.env.APP_INTERNAL_URL?.replace(/\/$/, "") ?? "http://app:3000";
  const secret = process.env.CRON_SECRET;
  if (!secret)
    throw new Error("CRON_SECRET is required for scheduled invoice delivery");

  const response = await fetch(`${appUrl}/api/internal/jobs/send-invoice`, {
    method: "POST",
    headers: {
      Authorization: `Bearer ${secret}`,
      "Content-Type": "application/json",
    },
    body: JSON.stringify({
      ...job.payload,
      jobId: job.id,
      idempotencyKey: job.idempotencyKey,
      invoiceId: requiredPayloadString(job, "invoiceId"),
      actorUserId: requiredPayloadString(job, "actorUserId"),
    }),
  });
  const result = (await response.json().catch(() => ({}))) as {
    error?: string;
  };
  if (!response.ok) {
    throw new Error(
      result.error ?? `Invoice delivery request failed (${response.status})`,
    );
  }
  return result;
}