import { IStorageAdapter } from './IStorageAdapter';

/**
 * Cordova 存储适配器
 * 使用 cordova-plugin-nativestorage
 */
export class CordovaStorageAdapter implements IStorageAdapter {
  private NativeStorage: any;
  private isReady = false;
  private readyPromise: Promise<void> | null = null;

  constructor() {
    this.initializePlugin();
  }

  private initializePlugin() {
    // 先尝试获取插件
    // @ts-ignore
    this.NativeStorage = window.NativeStorage;

    if (this.NativeStorage) {
      this.isReady = true;
    } else {
      // 如果插件还没加载，监听 deviceready 事件
      document.addEventListener('deviceready', () => {
        // @ts-ignore
        this.NativeStorage = window.NativeStorage;
        this.isReady = !!this.NativeStorage;

        if (!this.isReady) {
          console.warn('NativeStorage plugin still not available after deviceready');
        }
      }, false);
    }
  }

  private async ensureReady(): Promise<void> {
    if (this.isReady) {
      return;
    }

    // 如果还没准备好，创建一个等待 Promise
    if (!this.readyPromise) {
      this.readyPromise = new Promise((resolve, reject) => {
        const checkReady = () => {
          if (this.isReady) {
            resolve();
          } else {
            // 每100ms检查一次，最多等待10秒
            setTimeout(checkReady, 100);
          }
        };

        // 10秒超时
        setTimeout(() => {
          if (!this.isReady) {
            reject(new Error('NativeStorage plugin initialization timeout'));
          }
        }, 10000);

        checkReady();
      });
    }

    return this.readyPromise;
  }

  async getItem(key: string): Promise<string | null> {
    await this.ensureReady();
    return new Promise((resolve) => {
      this.NativeStorage.getItem(
        key,
        (value: string) => resolve(value),
        (error: any) => {
          console.error('读取存储失败:', error);
          resolve(null);
        }
      );
    });
  }

  async setItem(key: string, value: string): Promise<void> {
    await this.ensureReady();
    return new Promise((resolve, reject) => {
      this.NativeStorage.setItem(
        key,
        value,
        () => resolve(),
        (error: any) => {
          console.error('保存存储失败:', error);
          reject(error);
        }
      );
    });
  }

  async removeItem(key: string): Promise<void> {
    await this.ensureReady();
    return new Promise((resolve, reject) => {
      this.NativeStorage.remove(
        key,
        () => resolve(),
        (error: any) => {
          console.error('删除存储失败:', error);
          reject(error);
        }
      );
    });
  }
}