Submit GUI commands without page navigation

frigate_camera_control_bridge/static/app.js

@@ -129,6 +129,174 @@ function refreshSnapshot(button) {
   }, SNAPSHOT_REFRESH_DELAY_MS);
 }
 
+function actionContainerById(actionId) {
+  for (const container of document.querySelectorAll("[data-action-id]")) {
+    if (container.dataset.actionId === actionId) {
+      return container;
+    }
+  }
+  return null;
+}
+
+function actionStatusForForm(form) {
+  return form.closest(".action-control, .global-action")?.querySelector("[data-action-status]");
+}
+
+function showActionMessage(form, message, type = "success") {
+  const status = actionStatusForForm(form);
+  if (!status) {
+    return;
+  }
+  status.textContent = message || "";
+  status.classList.toggle("is-visible", Boolean(message));
+  status.classList.toggle("is-success", type === "success");
+  status.classList.toggle("is-error", type === "error");
+}
+
+function setCommandBusy(button, busy) {
+  if (!button) {
+    return;
+  }
+  if (busy) {
+    button.disabled = true;
+    button.classList.add("is-working");
+    button.setAttribute("aria-busy", "true");
+    return;
+  }
+  if (button.dataset.timerLocked !== "true") {
+    button.disabled = false;
+  }
+  button.classList.remove("is-working");
+  button.removeAttribute("aria-busy");
+}
+
+function updateStateChip(container, action) {
+  const chip = container.querySelector("[data-state-chip]");
+  if (!chip || !action.state) {
+    return;
+  }
+  const state = String(action.state).toLowerCase();
+  for (const className of Array.from(chip.classList)) {
+    if (className.startsWith("chip-state-")) {
+      chip.classList.remove(className);
+    }
+  }
+  chip.classList.add(`chip-state-${state}`);
+  chip.textContent = action.state_label || chip.dataset[`label${state.charAt(0).toUpperCase()}${state.slice(1)}`] || action.state;
+}
+
+function updateTimer(container, action) {
+  const timer = container.querySelector("[data-timer]");
+  if (!timer) {
+    return;
+  }
+  if (action.auto_off_at) {
+    timer.dataset.autoOffAt = String(action.auto_off_at);
+    timer.classList.remove("timer-idle", "timer-expired");
+    updateTimers();
+    return;
+  }
+  delete timer.dataset.autoOffAt;
+  timer.classList.add("timer-idle");
+  timer.classList.remove("timer-expired");
+  timer.textContent = timer.dataset.idleLabel || "";
+}
+
+function updateOnButtonLock(container, action) {
+  const button = container.querySelector(".cmd-on");
+  if (!button) {
+    return;
+  }
+  if (action.auto_off_at) {
+    const label = button.dataset.disabledLabel || "Already active until automatic turn-off";
+    button.dataset.timerLocked = "true";
+    button.disabled = true;
+    button.title = label;
+    button.setAttribute("aria-label", label);
+    return;
+  }
+  delete button.dataset.timerLocked;
+  if (!button.classList.contains("is-working")) {
+    button.disabled = false;
+  }
+  button.removeAttribute("title");
+  button.removeAttribute("aria-label");
+}
+
+function applyActionState(action) {
+  if (!action?.id) {
+    return;
+  }
+  const container = actionContainerById(action.id);
+  if (!container) {
+    return;
+  }
+  updateStateChip(container, action);
+  updateTimer(container, action);
+  updateOnButtonLock(container, action);
+}
+
+function applyActionPayload(payload) {
+  if (Array.isArray(payload.actions)) {
+    payload.actions.forEach(applyActionState);
+    return;
+  }
+  applyActionState(payload.action);
+}
+
+function refreshSnapshotForCommand(form) {
+  const button = form.closest(".camera-card")?.querySelector(".snapshot-refresh");
+  if (!button || button.classList.contains("is-refreshing")) {
+    return;
+  }
+  refreshSnapshot(button);
+}
+
+async function responseJson(response) {
+  const text = await response.text();
+  if (!text) {
+    return {};
+  }
+  try {
+    return JSON.parse(text);
+  } catch (_error) {
+    return { ok: false, message: text };
+  }
+}
+
+async function handleCommandSubmit(form, event) {
+  event.preventDefault();
+  if (form.dataset.requiresAck === "true") {
+    const message = form.dataset.ackMessage || "Confirm this action";
+    if (!window.confirm(message)) {
+      return;
+    }
+  }
+  const button = form.querySelector(".cmd");
+  if (button?.classList.contains("is-working")) {
+    return;
+  }
+  showActionMessage(form, form.dataset.workingLabel || "Sending command...", "success");
+  setCommandBusy(button, true);
+  try {
+    const response = await fetch(form.action, {
+      method: "POST",
+      headers: { Accept: "application/json" },
+    });
+    const payload = await responseJson(response);
+    if (!response.ok || payload.ok === false) {
+      throw new Error(payload.message || form.dataset.failedLabel || "Command failed.");
+    }
+    applyActionPayload(payload);
+    showActionMessage(form, payload.message || form.dataset.successLabel || "Command sent.", "success");
+    refreshSnapshotForCommand(form);
+  } catch (error) {
+    showActionMessage(form, error.message || form.dataset.failedLabel || "Command failed.", "error");
+  } finally {
+    setCommandBusy(button, false);
+  }
+}
+
 document.addEventListener("click", (event) => {
   const button = event.target.closest(".snapshot-refresh");
   if (!(button instanceof HTMLButtonElement)) {
@@ -146,13 +314,10 @@ document.addEventListener("submit", (event) => {
     handleRefreshSubmit(form, event);
     return;
   }
-  if (form.dataset.requiresAck !== "true") {
+  if (form.classList.contains("command-form")) {
+    handleCommandSubmit(form, event);
     return;
   }
-  const message = form.dataset.ackMessage || "Confirm this action";
-  if (!window.confirm(message)) {
-    event.preventDefault();
-  }
 });
 
 updateTimers();