Move frigate util under the camera manager hierarchy.

src/camera/frigate/util.ts

@@ -0,0 +1,84 @@
+import utcToZonedTime from 'date-fns-tz/utcToZonedTime';
+import fromUnixTime from 'date-fns/fromUnixTime';
+import {
+  ClipsOrSnapshots,
+  FrigateEvent,
+  FrigateRecording,
+} from '../../types';
+import { formatDateAndTime, prettifyTitle } from '../../utils/basic';
+
+/**
+ * Given an event generate a title.
+ * @param event
+ */
+export const getEventTitle = (event: FrigateEvent): string => {
+  const localTimezone = Intl.DateTimeFormat().resolvedOptions().timeZone;
+  const durationSeconds = Math.round(
+    event.end_time
+      ? event.end_time - event.start_time
+      : Date.now() / 1000 - event.start_time,
+  );
+  return `${formatDateAndTime(
+    utcToZonedTime(event.start_time * 1000, localTimezone),
+  )} [${durationSeconds}s, ${prettifyTitle(event.label)} ${Math.round(
+    event.top_score * 100,
+  )}%]`;
+};
+
+export const getRecordingTitle = (recording: FrigateRecording): string => {
+  return `${prettifyTitle(recording.camera)} ${formatDateAndTime(
+    fromUnixTime(recording.start_time),
+  )}`;
+};
+
+/**
+ * Get a thumbnail URL for an event.
+ * @param clientId The Frigate client id.
+ * @param event The event.
+ * @returns A string URL.
+ */
+export const getEventThumbnailURL = (clientId: string, event: FrigateEvent): string => {
+  return `/api/frigate/${clientId}/thumbnail/${event.id}`;
+};
+
+/**
+ * Get a media content ID for an event.
+ * @param clientId The Frigate client id.
+ * @param cameraName The Frigate camera name.
+ * @param event The Frigate event.
+ * @param mediaType The media type required.
+ * @returns A string media content id.
+ */
+export const getEventMediaContentID = (
+  clientId: string,
+  cameraName: string,
+  event: FrigateEvent,
+  mediaType: ClipsOrSnapshots,
+): string => {
+  return `media-source://frigate/${clientId}/event/${mediaType}/${cameraName}/${event.id}`;
+};
+
+/**
+ * Generate a recording identifier.
+ * @param clientId The Frigate client id.
+ * @param cameraName The Frigate camera name.
+ * @param recording The Frigate recording.
+ * @returns A recording identifier.
+ */
+export const getRecordingMediaContentID = (
+  clientId: string,
+  cameraName: string,
+  recording: FrigateRecording,
+): string => {
+  const date = fromUnixTime(recording.start_time);
+  return [
+    'media-source://frigate',
+    clientId,
+    'recordings',
+    cameraName,
+    `${date.getFullYear()}-${String(date.getMonth() + 1).padStart(2, '0')}-${String(
+      String(date.getDate()).padStart(2, '0'),
+    )}`,
+    String(date.getHours()).padStart(2, '0'),
+  ].join('/');
+};