Add campaigns component and services

dashboard-server/klaviyo-server/services/campaigns.service.js

@@ -0,0 +1,206 @@
+import fetch from 'node-fetch';
+import { TimeManager } from '../utils/time.utils.js';
+import { RedisService } from './redis.service.js';
+
+export class CampaignsService {
+  constructor(apiKey, apiRevision) {
+    this.apiKey = apiKey;
+    this.apiRevision = apiRevision;
+    this.baseUrl = 'https://a.klaviyo.com/api';
+    this.timeManager = new TimeManager();
+    this.redisService = new RedisService();
+  }
+
+  async getCampaigns(params = {}) {
+    try {
+      // Add request debouncing
+      const requestKey = JSON.stringify(params);
+      if (this._pendingRequests && this._pendingRequests[requestKey]) {
+        return this._pendingRequests[requestKey];
+      }
+
+      // Try to get from cache first
+      const cacheKey = this.redisService._getCacheKey('campaigns', params);
+      let cachedData = null;
+      try {
+        cachedData = await this.redisService.get(`${cacheKey}:raw`);
+        if (cachedData) {
+          return cachedData;
+        }
+      } catch (cacheError) {
+        console.warn('[CampaignsService] Cache error:', cacheError);
+      }
+
+      this._pendingRequests = this._pendingRequests || {};
+      this._pendingRequests[requestKey] = (async () => {
+        let allCampaigns = [];
+        let nextCursor = params.pageCursor;
+        let pageCount = 0;
+        
+        const filter = params.filter || this._buildFilter(params);
+        
+        do {
+          const queryParams = new URLSearchParams();
+          if (filter) {
+            queryParams.append('filter', filter);
+          }
+          queryParams.append('sort', params.sort || '-send_time');
+
+          if (nextCursor) {
+            queryParams.append('page[cursor]', nextCursor);
+          }
+
+          const url = `${this.baseUrl}/campaigns?${queryParams.toString()}`;
+
+          try {
+            const response = await fetch(url, {
+              method: 'GET',
+              headers: {
+                'Accept': 'application/json',
+                'Content-Type': 'application/json',
+                'Authorization': `Klaviyo-API-Key ${this.apiKey}`,
+                'revision': this.apiRevision
+              }
+            });
+
+            if (!response.ok) {
+              const errorData = await response.json();
+              console.error('[CampaignsService] API Error:', errorData);
+              throw new Error(`Klaviyo API error: ${response.status} ${response.statusText}`);
+            }
+
+            const responseData = await response.json();
+            allCampaigns = allCampaigns.concat(responseData.data || []);
+            pageCount++;
+            
+            nextCursor = responseData.links?.next ? 
+              new URL(responseData.links.next).searchParams.get('page[cursor]') : null;
+
+            if (nextCursor) {
+              await new Promise(resolve => setTimeout(resolve, 50));
+            }
+          } catch (fetchError) {
+            console.error('[CampaignsService] Fetch error:', fetchError);
+            throw fetchError;
+          }
+          
+        } while (nextCursor);
+
+        const transformedCampaigns = this._transformCampaigns(allCampaigns);
+
+        const result = {
+          data: transformedCampaigns,
+          meta: {
+            total_count: transformedCampaigns.length,
+            page_count: pageCount
+          }
+        };
+
+        try {
+          const ttl = this.redisService._getTTL(params.timeRange);
+          await this.redisService.set(`${cacheKey}:raw`, result, ttl);
+        } catch (cacheError) {
+          console.warn('[CampaignsService] Cache set error:', cacheError);
+        }
+
+        delete this._pendingRequests[requestKey];
+        return result;
+      })();
+
+      return await this._pendingRequests[requestKey];
+    } catch (error) {
+      console.error('[CampaignsService] Error fetching campaigns:', error);
+      throw error;
+    }
+  }
+
+  _buildFilter(params) {
+    const filters = [];
+    
+    if (params.startDate && params.endDate) {
+      const startUtc = this.timeManager.formatForAPI(params.startDate);
+      const endUtc = this.timeManager.formatForAPI(params.endDate);
+      
+      filters.push(`greater-or-equal(send_time,${startUtc})`);
+      filters.push(`less-than(send_time,${endUtc})`);
+    }
+
+    if (params.status) {
+      filters.push(`equals(status,"${params.status}")`);
+    }
+
+    if (params.customFilters) {
+      filters.push(...params.customFilters);
+    }
+
+    return filters.length > 0 ? (filters.length > 1 ? `and(${filters.join(',')})` : filters[0]) : null;
+  }
+
+  async getCampaignsByTimeRange(timeRange, options = {}) {
+    const range = this.timeManager.getDateRange(timeRange);
+    if (!range) {
+      throw new Error('Invalid time range specified');
+    }
+
+    const params = {
+      timeRange,
+      startDate: range.start.toISO(),
+      endDate: range.end.toISO(),
+      ...options
+    };
+
+    // Try to get from cache first
+    const cacheKey = this.redisService._getCacheKey('campaigns', params);
+    let cachedData = null;
+    try {
+      cachedData = await this.redisService.get(`${cacheKey}:raw`);
+      if (cachedData) {
+        return cachedData;
+      }
+    } catch (cacheError) {
+      console.warn('[CampaignsService] Cache error:', cacheError);
+    }
+
+    return this.getCampaigns(params);
+  }
+
+  _transformCampaigns(campaigns) {
+    if (!Array.isArray(campaigns)) {
+      console.warn('[CampaignsService] Campaigns is not an array:', campaigns);
+      return [];
+    }
+
+    return campaigns.map(campaign => {
+      try {
+        const stats = campaign.attributes?.campaign_message?.stats || {};
+        
+        return {
+          id: campaign.id,
+          name: campaign.attributes?.name || "Unnamed Campaign",
+          subject: campaign.attributes?.campaign_message?.subject || "",
+          send_time: campaign.attributes?.send_time,
+          stats: {
+            delivery_rate: stats.delivery_rate || 0,
+            delivered: stats.delivered || 0,
+            recipients: stats.recipients || 0,
+            open_rate: stats.open_rate || 0,
+            opens_unique: stats.opens_unique || 0,
+            opens: stats.opens || 0,
+            clicks_unique: stats.clicks_unique || 0,
+            click_rate: stats.click_rate || 0,
+            click_to_open_rate: stats.click_to_open_rate || 0,
+            conversion_value: stats.conversion_value || 0,
+            conversion_uniques: stats.conversion_uniques || 0
+          }
+        };
+      } catch (error) {
+        console.error('[CampaignsService] Error transforming campaign:', error, campaign);
+        return {
+          id: campaign.id || 'unknown',
+          name: 'Error Processing Campaign',
+          stats: {}
+        };
+      }
+    });
+  }
+}