src/client/input-handler.ts

export {};

interface SubmitDownloadResponse {
  job?: { id: string };
  error?: string;
}

const form = document.getElementById("submitForm") as HTMLFormElement | null;
const titleInput = document.getElementById("titleInput") as HTMLInputElement | null;
const urlInput = document.getElementById("urlInput") as HTMLInputElement | null;
const errorEl = document.getElementById("formError") as HTMLElement | null;

function showError(message: string): void {
  if (!errorEl) return;
  errorEl.textContent = message;
  errorEl.hidden = false;
}

function clearError(): void {
  if (!errorEl) return;
  errorEl.hidden = true;
  errorEl.textContent = "";
}

form?.addEventListener("submit", async (e: Event) => {
  e.preventDefault();
  clearError();

  const title = titleInput?.value.trim() || "";
  const url = urlInput?.value.trim() || "";

  if (!title || !url) {
    showError("Both a title and a source link are needed.");
    return;
  }

  const submitBtn = form.querySelector<HTMLButtonElement>("button[type=submit]");
  if (submitBtn) submitBtn.disabled = true;

  try {
    const res = await fetch("/api/downloads", {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify({ title, url }),
    });
    const data = (await res.json()) as SubmitDownloadResponse;

    if (!res.ok) {
      showError(data.error || "The booth couldn't take that link.");
      return;
    }

    form.reset();
    // job-feed.ts listens on /api/events and will render the new job as soon
    // as the server emits it — no need to duplicate that rendering here.
  } catch {
    showError("Couldn't reach the booth. Check your connection and try again.");
  } finally {
    if (submitBtn) submitBtn.disabled = false;
  }
});