let areWorkstationsExpanded = false;

const loadWorkstations = async () => {
  const workstationContainer = document.getElementById("workstations");
  const workstationToggle = document.getElementById("workstation-toggle");

  if (!workstationContainer) {
    return;
  }

  workstationsList = await fetchJson("./data/workstations.json");
  renderWorkstations(workstationContainer);

  if (
    workstationToggle &&
    workstationsList.some((workstation) => workstation.actual === false)
  ) {
    workstationToggle.hidden = false;
    workstationToggle.addEventListener("click", () => {
      areWorkstationsExpanded = !areWorkstationsExpanded;
      workstationToggle.textContent = areWorkstationsExpanded
        ? "Show less"
        : "View all";
      workstationToggle.setAttribute(
        "aria-expanded",
        String(areWorkstationsExpanded),
      );
      renderWorkstations(workstationContainer);
    });
  }
};

const renderWorkstations = (workstationContainer) => {
  const workstationCards = workstationsList
    .filter(
      (workstation) => areWorkstationsExpanded || workstation.actual !== false,
    )
    .map(buildWorkstationCard);
  workstationContainer.replaceChildren(...workstationCards);
};

const buildWorkstationCard = (workstation, index) => {
  const card = document.createElement("article");
  card.classList.add("workstation-card", `tone-${workstation.tone ?? "mint"}`);

  const header = document.createElement("div");
  header.classList.add("workstation-card__header");

  const indexBadge = document.createElement("span");
  indexBadge.classList.add("workstation-card__index");
  indexBadge.textContent = formatIndex(index);

  const key = document.createElement("span");
  key.classList.add("workstation-card__key");
  key.textContent = workstation.key;

  const status = document.createElement("span");
  status.classList.add(
    "workstation-card__status",
    workstation.actual
      ? "workstation-card__status--actual"
      : "workstation-card__status--archive",
  );
  status.textContent = workstation.actual ? "active" : "archive";

  const title = document.createElement("h3");
  title.classList.add("workstation-card__title");
  title.textContent = workstation.name;

  const specs = document.createElement("dl");
  specs.classList.add("workstation-card__specs");

  appendSpec(specs, "CPU", workstation.specs?.cpu);
  appendSpec(specs, "GPU", workstation.specs?.gpu);
  appendSpec(specs, "RAM", workstation.specs?.ram);
  appendSpec(specs, "OS", workstation.specs?.os);

  const storage = buildChipGroup(
    "Storage",
    workstation.specs?.storage?.map(formatStorage) ?? [],
  );
  const devices = buildChipGroup(
    "Devices",
    workstation.devices?.map((device) => device.name) ?? [],
  );

  header.append(indexBadge, key, status);
  card.append(header, title, specs);

  if (storage) {
    card.append(storage);
  }

  if (devices) {
    card.append(devices);
  }

  return card;
};

const appendSpec = (list, label, value) => {
  if (!value) {
    return;
  }

  const term = document.createElement("dt");
  term.textContent = label;

  const description = document.createElement("dd");
  description.textContent = value;

  list.append(term, description);
};

const buildChipGroup = (label, items) => {
  if (items.length === 0) {
    return null;
  }

  const group = document.createElement("div");
  group.classList.add("workstation-card__group");

  const title = document.createElement("p");
  title.classList.add("workstation-card__group-title");
  title.textContent = label;

  const chips = document.createElement("div");
  chips.classList.add("workstation-card__chips");
  chips.append(
    ...items.map((item) => {
      const chip = document.createElement("span");
      chip.textContent = item;
      return chip;
    }),
  );

  group.append(title, chips);
  return group;
};

const formatStorage = (storage) => {
  const parts = [storage.capacity, storage.name, storage.type].filter(Boolean);
  return parts.join(" · ");
};