Move card-controller out of utils.

src/card-controller/message-manager.ts

@@ -0,0 +1,67 @@
+import { FrigateCardError, MESSAGE_TYPE_PRIORITIES, Message } from '../types';
+import { errorToConsole } from '../utils/basic';
+import { CardMessageAPI } from './types';
+
+export class MessageManager {
+  protected _message: Message | null = null;
+  protected _api: CardMessageAPI;
+
+  constructor(api: CardMessageAPI) {
+    this._api = api;
+  }
+
+  public getMessage(): Message | null {
+    return this._message;
+  }
+
+  public hasMessage(): boolean {
+    return !!this._message;
+  }
+
+  public hasErrorMessage(): boolean {
+    return this._message?.type === 'error';
+  }
+
+  public reset(): void {
+    const hadMessage = this.hasMessage();
+    this._message = null;
+
+    if (hadMessage) {
+      this._api.getCardElementManager().update();
+    }
+  }
+
+  public setErrorIfHigherPriority(error: unknown): void {
+    // This object should accept unknown objects to be able to seamlessly
+    // process arguments to catch() which can only be unknown/any.
+    if (!(error instanceof Error)) {
+      return;
+    }
+
+    errorToConsole(error);
+    this.setMessageIfHigherPriority({
+      message: error.message,
+      type: 'error',
+      ...(error instanceof FrigateCardError && { context: error.context }),
+    });
+  }
+
+  public setMessageIfHigherPriority(message: Message): boolean {
+    const currentPriority = this._message
+      ? MESSAGE_TYPE_PRIORITIES[this._message.type]
+      : 0;
+    const newPriority = MESSAGE_TYPE_PRIORITIES[message.type];
+
+    if (this._message && newPriority < currentPriority) {
+      return false;
+    }
+
+    this._message = message;
+
+    // When a message is displayed it effectively unloads the media.
+    this._api.getMediaLoadedInfoManager().clear();
+    this._api.getCardElementManager().scrollReset();
+    this._api.getCardElementManager().update();
+    return true;
+  }
+}