feat: Add pm

toju-app/src/app/domains/direct-message/infrastructure/offline-queue.repository.ts

@@ -0,0 +1,49 @@
+import { Injectable } from '@angular/core';
+
+const STORAGE_PREFIX = 'metoyou_direct_message_queue';
+
+@Injectable({ providedIn: 'root' })
+export class OfflineQueueRepository {
+  async load(ownerId: string): Promise<string[]> {
+    return this.read(ownerId);
+  }
+
+  async enqueue(ownerId: string, messageId: string): Promise<void> {
+    this.write(ownerId, Array.from(new Set([...this.read(ownerId), messageId])));
+  }
+
+  async remove(ownerId: string, messageId: string): Promise<void> {
+    this.write(
+      ownerId,
+      this.read(ownerId).filter((entry) => entry !== messageId)
+    );
+  }
+
+  async clear(ownerId: string): Promise<void> {
+    this.write(ownerId, []);
+  }
+
+  private read(ownerId: string): string[] {
+    const rawValue = localStorage.getItem(this.key(ownerId));
+
+    if (!rawValue) {
+      return [];
+    }
+
+    try {
+      const parsed = JSON.parse(rawValue) as string[];
+
+      return Array.isArray(parsed) ? parsed.filter((entry) => typeof entry === 'string') : [];
+    } catch {
+      return [];
+    }
+  }
+
+  private write(ownerId: string, messageIds: string[]): void {
+    localStorage.setItem(this.key(ownerId), JSON.stringify(messageIds));
+  }
+
+  private key(ownerId: string): string {
+    return `${STORAGE_PREFIX}:${ownerId}`;
+  }
+}