/**
 * Mock for react-native-mmkv in Vitest.
 * In-memory storage that mimics MMKV API.
 */
const store = new Map<string, string | number | boolean>();

export class MMKV {
  private id: string;

  constructor(config?: { id?: string }) {
    this.id = config?.id ?? 'default';
  }

  getString(key: string): string | undefined {
    const val = store.get(`${this.id}:${key}`);
    return typeof val === 'string' ? val : undefined;
  }

  set(key: string, value: string | number | boolean): void {
    store.set(`${this.id}:${key}`, value);
  }

  delete(key: string): void {
    store.delete(`${this.id}:${key}`);
  }

  contains(key: string): boolean {
    return store.has(`${this.id}:${key}`);
  }

  clearAll(): void {
    const prefix = `${this.id}:`;
    for (const key of store.keys()) {
      if (key.startsWith(prefix)) {
        store.delete(key);
      }
    }
  }

  getAllKeys(): string[] {
    const prefix = `${this.id}:`;
    return Array.from(store.keys())
      .filter((k) => k.startsWith(prefix))
      .map((k) => k.slice(prefix.length));
  }
}