StorageAPI

const settings = await context.storage.get('settings');
if (settings) {
  context.logger.info('Loaded settings:', settings);
} else {
  context.logger.info('No settings found');
}
 
// With default value
const theme = await context.storage.get('theme') ?? 'dark';

// Store simple value
await context.storage.set('theme', 'dark');
 
// Store object
await context.storage.set('settings', {
  autoSave: true,
  fontSize: 14,
  theme: 'dark'
});
 
// Store array
await context.storage.set('recentFiles', [
  '/path/to/file1.md',
  '/path/to/file2.md'
]);
 
context.ui.showInformationMessage('Settings saved');

await context.storage.delete('cache');
context.logger.info('Cache cleared');
 
// Check if exists before deleting
const keys = await context.storage.keys();
if (keys.includes('oldData')) {
  await context.storage.delete('oldData');
}

const keys = await context.storage.keys();
context.logger.info(`Storage contains ${keys.length} keys:`, keys);
 
// List all stored data
for (const key of keys) {
  const value = await context.storage.get(key);
  context.logger.info(`${key}:`, value);
}

// Clear all plugin data
await context.storage.clear();
context.ui.showInformationMessage('All data cleared');
 
// With confirmation
const confirmed = await context.ui.showConfirm({
  title: 'Clear Storage',
  message: 'This will delete all plugin data. Continue?'
});
 
if (confirmed) {
  await context.storage.clear();
}

// Get separate databases for different purposes
const settingsDb = await context.storage.getDatabase('settings');
const cacheDb = await context.storage.getDatabase('cache');
 
await settingsDb.set('theme', 'dark');
await cacheDb.set('lastFetch', Date.now());
 
// Clear only cache
await cacheDb.clear();

export default class SettingsPlugin {
  private context: PluginContext;
  private settings: any;
 
  constructor(context: PluginContext) {
    this.context = context;
  }
 
  async activate(): Promise<void> {
    // Load settings on activation
    await this.loadSettings();
 
    // Register commands
    context.commands.register([
      {
        id: 'myPlugin.openSettings',
        name: 'Open Settings',
        execute: () => this.openSettings()
      },
      {
        id: 'myPlugin.resetSettings',
        name: 'Reset Settings',
        execute: () => this.resetSettings()
      },
      {
        id: 'myPlugin.exportSettings',
        name: 'Export Settings',
        execute: () => this.exportSettings()
      }
    ]);
 
    context.logger.info('Settings loaded:', this.settings);
  }
 
  async loadSettings(): Promise<void> {
    // Load with defaults
    this.settings = await context.storage.get('settings') ?? {
      autoSave: true,
      fontSize: 14,
      theme: 'dark',
      keybindings: []
    };
  }
 
  async saveSettings(): Promise<void> {
    await context.storage.set('settings', this.settings);
    context.ui.showInformationMessage('Settings saved');
  }
 
  async openSettings(): Promise<void> {
    // Show settings UI (simplified)
    const autoSave = await context.ui.showQuickPick([
      { label: 'Enabled', value: true },
      { label: 'Disabled', value: false }
    ], {
      title: 'Auto Save'
    });
 
    if (autoSave) {
      this.settings.autoSave = autoSave.value;
      await this.saveSettings();
    }
  }
 
  async resetSettings(): Promise<void> {
    const confirmed = await context.ui.showConfirm({
      title: 'Reset Settings',
      message: 'Reset all settings to defaults?'
    });
 
    if (confirmed) {
      await context.storage.delete('settings');
      await this.loadSettings();
      context.ui.showInformationMessage('Settings reset');
    }
  }
 
  async exportSettings(): Promise<void> {
    const json = JSON.stringify(this.settings, null, 2);
    await context.clipboard.writeText(json);
    context.ui.showInformationMessage('Settings copied to clipboard');
  }
 
  async deactivate(): Promise<void> {
    // Save on deactivation
    await this.saveSettings();
  }
}

export default class CachePlugin {
  private context: PluginContext;
  private cache: Map<string, any>;
  private cacheDb: any;
 
  constructor(context: PluginContext) {
    this.context = context;
    this.cache = new Map();
  }
 
  async activate(): Promise<void> {
    // Use separate database for cache
    this.cacheDb = await context.storage.getDatabase('cache');
 
    // Load cache into memory
    await this.loadCache();
 
    // Register commands
    context.commands.register([
      {
        id: 'myPlugin.clearCache',
        name: 'Clear Cache',
        execute: () => this.clearCache()
      },
      {
        id: 'myPlugin.viewCache',
        name: 'View Cache Stats',
        execute: () => this.viewCache()
      }
    ]);
 
    // Auto-cleanup old cache entries
    this.setupAutoCleanup();
  }
 
  async loadCache(): Promise<void> {
    const keys = await this.cacheDb.keys();
 
    for (const key of keys) {
      const entry = await this.cacheDb.get(key);
 
      // Check expiry
      if (entry.expires && entry.expires < Date.now()) {
        await this.cacheDb.delete(key);
      } else {
        this.cache.set(key, entry.data);
      }
    }
 
    context.logger.info(`Loaded ${this.cache.size} cache entries`);
  }
 
  async getCached(key: string): Promise<any> {
    // Check memory cache first
    if (this.cache.has(key)) {
      const entry = await this.cacheDb.get(key);
      if (entry && (!entry.expires || entry.expires > Date.now())) {
        return entry.data;
      }
    }
    return undefined;
  }
 
  async setCached(key: string, data: any, ttl?: number): Promise<void> {
    const entry = {
      data,
      created: Date.now(),
      expires: ttl ? Date.now() + ttl : undefined
    };
 
    this.cache.set(key, data);
    await this.cacheDb.set(key, entry);
  }
 
  async clearCache(): Promise<void> {
    const confirmed = await context.ui.showConfirm({
      title: 'Clear Cache',
      message: 'This will delete all cached data. Continue?'
    });
 
    if (confirmed) {
      this.cache.clear();
      await this.cacheDb.clear();
      context.ui.showInformationMessage('Cache cleared');
    }
  }
 
  async viewCache(): Promise<void> {
    const keys = await this.cacheDb.keys();
    let totalSize = 0;
 
    const stats = [];
    for (const key of keys) {
      const entry = await this.cacheDb.get(key);
      const size = JSON.stringify(entry).length;
      totalSize += size;
 
      stats.push({
        key,
        size: `${(size / 1024).toFixed(2)} KB`,
        expires: entry.expires ? new Date(entry.expires).toISOString() : 'Never'
      });
    }
 
    context.logger.info('Cache Stats:');
    context.logger.info(`Total entries: $\\{keys.length\\}`);
    context.logger.info(`Total size: ${(totalSize / 1024).toFixed(2)} KB`);
    context.logger.info('Entries:', stats);
 
    context.ui.showInformationMessage(
      `Cache: ${keys.length} entries (${(totalSize / 1024).toFixed(2)} KB)`
    );
  }
 
  setupAutoCleanup(): void {
    // Clean up expired entries every hour
    setInterval(async () => {
      const keys = await this.cacheDb.keys();
      let deleted = 0;
 
      for (const key of keys) {
        const entry = await this.cacheDb.get(key);
        if (entry.expires && entry.expires < Date.now()) {
          await this.cacheDb.delete(key);
          this.cache.delete(key);
          deleted++;
        }
      }
 
      if (deleted > 0) {
        context.logger.info(`Cleaned up ${deleted} expired cache entries`);
      }
    }, 60 * 60 * 1000);
  }
 
  async deactivate(): Promise<void> {
    // Cache persists automatically
  }
}

export default class DataSyncPlugin {
  private context: PluginContext;
  private localDb: any;
  private syncDb: any;
 
  constructor(context: PluginContext) {
    this.context = context;
  }
 
  async activate(): Promise<void> {
    // Separate databases for local and sync data
    this.localDb = await context.storage.getDatabase('local');
    this.syncDb = await context.storage.getDatabase('sync');
 
    // Register commands
    context.commands.register([
      {
        id: 'myPlugin.sync',
        name: 'Sync Data',
        execute: () => this.syncData()
      },
      {
        id: 'myPlugin.viewSyncStatus',
        name: 'View Sync Status',
        execute: () => this.viewSyncStatus()
      }
    ]);
  }
 
  async saveLocal(key: string, data: any): Promise<void> {
    await this.localDb.set(key, {
      data,
      modified: Date.now(),
      synced: false
    });
  }
 
  async syncData(): Promise<void> {
    const keys = await this.localDb.keys();
    let synced = 0;
 
    for (const key of keys) {
      const entry = await this.localDb.get(key);
 
      if (!entry.synced) {
        // Simulate remote sync
        await this.syncToRemote(key, entry.data);
 
        // Mark as synced
        await this.localDb.set(key, {
          ...entry,
          synced: true,
          syncedAt: Date.now()
        });
 
        synced++;
      }
    }
 
    context.ui.showInformationMessage(`Synced ${synced} items`);
  }
 
  async syncToRemote(key: string, data: any): Promise<void> {
    // Store in sync database
    await this.syncDb.set(key, {
      data,
      syncedAt: Date.now()
    });
  }
 
  async viewSyncStatus(): Promise<void> {
    const localKeys = await this.localDb.keys();
    const unsyncedCount = (await Promise.all(
      localKeys.map(async k => {
        const entry = await this.localDb.get(k);
        return !entry.synced;
      })
    )).filter(Boolean).length;
 
    context.ui.showInformationMessage(
      `${unsyncedCount} items pending sync`
    );
  }
 
  async deactivate(): Promise<void> {
    // Auto-sync on deactivation
    await this.syncData();
  }
}

// Split large data into chunks
const data = largeObject;
const chunks = chunkData(data, 1024 * 100); // 100KB chunks
 
for (let i = 0; i < chunks.length; i++) {
  await storage.set(`data_chunk_$\\{i\\}`, chunks[i]);
}
 
// Retrieve and reassemble
const keys = await storage.keys();
const dataKeys = keys.filter(k => k.startsWith('data_chunk_'));
const chunks = await Promise.all(dataKeys.map(k => storage.get(k)));
const reconstructed = reassembleChunks(chunks);