feat(pricing): 添加模型价格文件本地fallback机制

scripts/test-pricing-fallback.js

@@ -0,0 +1,92 @@
+#!/usr/bin/env node
+
+const fs = require('fs');
+const path = require('path');
+
+// 测试定价服务的fallback机制
+async function testPricingFallback() {
+  console.log('🧪 Testing pricing service fallback mechanism...\n');
+
+  // 备份现有的模型定价文件
+  const dataDir = path.join(process.cwd(), 'data');
+  const pricingFile = path.join(dataDir, 'model_pricing.json');
+  const backupFile = path.join(dataDir, 'model_pricing.backup.json');
+
+  // 1. 备份现有文件
+  if (fs.existsSync(pricingFile)) {
+    console.log('📦 Backing up existing pricing file...');
+    fs.copyFileSync(pricingFile, backupFile);
+  }
+
+  try {
+    // 2. 删除现有定价文件以触发fallback
+    if (fs.existsSync(pricingFile)) {
+      console.log('🗑️  Removing existing pricing file to test fallback...');
+      fs.unlinkSync(pricingFile);
+    }
+
+    // 3. 初始化定价服务
+    console.log('🚀 Initializing pricing service...\n');
+    
+    // 清除require缓存以确保重新加载
+    delete require.cache[require.resolve('../src/services/pricingService')];
+    const pricingService = require('../src/services/pricingService');
+
+    // 模拟网络失败，强制使用fallback
+    const originalDownload = pricingService._downloadFromRemote;
+    pricingService._downloadFromRemote = function() {
+      return Promise.reject(new Error('Simulated network failure for testing'));
+    };
+
+    // 初始化服务
+    await pricingService.initialize();
+
+    // 4. 验证fallback是否工作
+    console.log('\n📊 Verifying fallback data...');
+    const status = pricingService.getStatus();
+    console.log(`   - Initialized: ${status.initialized}`);
+    console.log(`   - Model count: ${status.modelCount}`);
+    console.log(`   - Last updated: ${status.lastUpdated}`);
+
+    // 5. 测试获取模型定价
+    const testModels = ['claude-3-opus-20240229', 'gpt-4', 'gemini-pro'];
+    console.log('\n💰 Testing model pricing retrieval:');
+    
+    for (const model of testModels) {
+      const pricing = pricingService.getModelPricing(model);
+      if (pricing) {
+        console.log(`   ✅ ${model}: Found pricing data`);
+      } else {
+        console.log(`   ❌ ${model}: No pricing data`);
+      }
+    }
+
+    // 6. 验证文件是否被创建
+    if (fs.existsSync(pricingFile)) {
+      console.log('\n✅ Fallback successfully created pricing file in data directory');
+      const fileStats = fs.statSync(pricingFile);
+      console.log(`   - File size: ${(fileStats.size / 1024).toFixed(2)} KB`);
+    } else {
+      console.log('\n❌ Fallback failed to create pricing file');
+    }
+
+    // 恢复原始下载函数
+    pricingService._downloadFromRemote = originalDownload;
+
+  } finally {
+    // 7. 恢复备份文件
+    if (fs.existsSync(backupFile)) {
+      console.log('\n📦 Restoring original pricing file...');
+      fs.copyFileSync(backupFile, pricingFile);
+      fs.unlinkSync(backupFile);
+    }
+  }
+
+  console.log('\n✨ Fallback mechanism test completed!');
+}
+
+// 运行测试
+testPricingFallback().catch(error => {
+  console.error('❌ Test failed:', error);
+  process.exit(1);
+});