import {
  dummy,
  getProductos,
  getPrices,
  getPricesByCustomer,
  getCustomers,
} from "../index.js";

const tokenInput = document.querySelector<HTMLInputElement>("#token-input")!;

if (localStorage.token) {
  tokenInput.value = localStorage.token;
}

function token() {
  return tokenInput.value;
}

function clear(el: Node) {
  while (el.firstChild) {
    el.firstChild.remove();
  }
}

function objectToDom(object: any) {
  const detailsEl = document.createElement("details");
  const summaryEl = document.createElement("summary");
  summaryEl.append("JSON");
  detailsEl.open = true;
  detailsEl.append(summaryEl);
  const preEl = document.createElement("pre");
  const codeEl = document.createElement("code");
  if (typeof object === "string") {
    codeEl.append(JSON.stringify(JSON.parse(object), null, 2));
  } else if (Object.keys(object).length > 0) {
    codeEl.append(JSON.stringify(object, null, 2));
  } else {
    codeEl.append(object);
  }
  preEl.append(codeEl);
  detailsEl.append(preEl);
  return detailsEl;
}

async function showResponse(statusEl: Element | null, promise: Promise<any>) {
  if (statusEl) clear(statusEl);
  try {
    const response = await promise;
    if (statusEl) {
      statusEl.append("¡Funcionó!");
      if (response) {
        statusEl.append(" Respuesta:", objectToDom(response));
      }
    } else alert(`¡Funcionó!${response ? ` Respuesta: ${response}` : ""}`);
  } catch (error) {
    if (statusEl) statusEl.append("Hubo un error :(", objectToDom(error));
    else alert(`Hubo un error: ${error}`);
  }
}

function setupForm(selector: string, listener: () => Promise<any>) {
  const formEl = document.querySelector<HTMLFormElement>(selector);
  if (!formEl) throw new Error(`No existe el formulario ${selector}`);
  const statusEl = formEl.querySelector<HTMLElement>(".status");
  if (!statusEl)
    console.error(
      `El formulario ${selector} no tiene un .status, voy a reportar los errores con alert()`
    );
  formEl.addEventListener("submit", async (event) => {
    event.preventDefault();
    showResponse(statusEl, listener());
  });
}

setupForm("#token", () => dummy(token()));
setupForm("#save-token", async () => {
  localStorage.token = token();
});
setupForm("#productos", () => getProductos(token(), {}));
setupForm("#price", () => getPrices(token(), {}));
setupForm("#price-by-customer", () => getPricesByCustomer(token(), {}));
setupForm("#customer", () => getCustomers(token(), {}));