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/*
 * gtag sample program
 * Copyright (c) 2025 Cybozu
 *
 * Licensed under the MIT License
 * <https://opensource.org/license/mit/>
 */
(function() {
    const MEASUREMENT_ID = 'YOUR_MEASUREMENT_ID';

    // Googleタグマネージャー用のscript要素を作成
    var gtagScript = document.createElement('script');
    gtagScript.async = true;
    gtagScript.src = `https://www.googletagmanager.com/gtag/js?id=${MEASUREMENT_ID}`;

    // 最初のscriptタグの前に挿入
    var firstScript = document.getElementsByTagName('script')[0];
    if (firstScript && firstScript.parentNode) {
      firstScript.parentNode.insertBefore(gtagScript, firstScript);
    } else {
      // scriptタグが見つからない場合はhead要素に追加
      document.head.appendChild(gtagScript);
    }

    // dataLayerとgtag関数を初期化
    window.dataLayer = window.dataLayer || [];
    function gtag() {
      window.dataLayer.push(arguments);
    }

    // gtagの初期設定を実行（グローバルで利用できるようwindowに設定）
    window.gtag = gtag; 

    window.gtag('js', new Date());
    window.gtag('config', MEASUREMENT_ID);
})();

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sample-program
├── package.json
├── config.js
├── g4-key.json
├── utils.js
└── index.js

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{
  "name": "kintone-ga4",
  "version": "1.0.0",
  "main": "index.js",
  "scripts": {
    "start": "node index"
  },
  "type": "module",
  "author": "Cybozu",
  "license": "MIT",
  "dependencies": {
    "@google-analytics/data": "^5.1.0",
    "@kintone/rest-api-client": "^5.7.4"
  }
}

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/*
 * ga integration sample program
 * Copyright (c) 2025 Cybozu
 *
 * Licensed under the MIT License
 * <https://opensource.org/license/mit/>
 */
import {CONFIG} from './config.js';
import {ConfigValidator, GA4Service, KintoneService, CustomError} from './utils.js';

class ReportGenerator {
  constructor(analyticsData) {
    this.data = analyticsData;
  }

  calculateAppMetrics() {
    const appIdRegex = /\/k(?:\/m)?\/([0-9]+)/;

    return this.data.rows.reduce((metricsPerAppMap, row) => {
      const pagePath = row.dimensionValues[0].value;

      const appIdMatch = pagePath.match(appIdRegex);
      if (!appIdMatch) return metricsPerAppMap;

      const [_, appId] = appIdMatch;

      const [screenPageViews, totalUsers] = row.metricValues.map(metric => Number(metric.value));
      const previousScreenPageViews = metricsPerAppMap.get(appId)?.screenPageViews || 0;
      const previousTotalUsers = metricsPerAppMap.get(appId)?.totalUsers || 0;

      metricsPerAppMap.set(appId, {
        screenPageViews: previousScreenPageViews + screenPageViews,
        totalUsers: Math.max(previousTotalUsers, totalUsers),
      });

      return metricsPerAppMap;
    }, new Map());
  }
}

async function runReport() {
  try {
    const configValidationResult = ConfigValidator.validateConfig();
    if (configValidationResult.isValid === false) {
      console.log(`Validation error: ${configValidationResult.message}`);
      return;
    }

    const ga4Service = new GA4Service();
    const kintoneService = new KintoneService();

    const formFields = await kintoneService.getFormFields();
    const formFieldsValidationResult = ConfigValidator.validateFormFields(formFields, CONFIG);
    if (formFieldsValidationResult.isValid === false) {
      console.log(`Validation error: ${formFieldsValidationResult.message}`);
      return;
    }

    const analyticsData = await ga4Service.fetchAnalyticsData();
    const reportGenerator = new ReportGenerator(analyticsData);
    const appMetricsSummary = reportGenerator.calculateAppMetrics();

    if (appMetricsSummary.size === 0) {
      console.log('No app metrics found in GA for the specified date range.');
      return;
    }

    const analyzedAppIds = Array.from(appMetricsSummary.keys());
    const existingAppsInAAR = await kintoneService.getExistingApps(analyzedAppIds);

    await kintoneService.updateRecords(appMetricsSummary, existingAppsInAAR);
  } catch (error) {
    if (error instanceof CustomError) {
      console.error(error.message);
    } else {
      console.error(`Something went wrong: ${error}`);
    }
  }
}

runReport();

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/*
 * ga integration sample program
 * Copyright (c) 2025 Cybozu
 *
 * Licensed under the MIT License
 * <https://opensource.org/license/mit/>
 */
import {BetaAnalyticsDataClient} from '@google-analytics/data';
import {KintoneRestAPIClient} from '@kintone/rest-api-client';
import {CONFIG, DEFAULT_CONFIG} from './config.js';
import fs from 'fs';

export class CustomError extends Error {
  constructor(message) {
    super(message);
    this.name = 'CustomError';
  }
}

export class DateFormatter {
  static formatDate = (date) => {
    const year = date.getFullYear();
    const month = String(date.getMonth() + 1).padStart(2, '0');
    const day = String(date.getDate()).padStart(2, '0');
    return `${year}-${month}-${day}`;
  };
}

export class GA4Service {
  constructor() {
    this.client = new BetaAnalyticsDataClient({keyFile: CONFIG.ga4.keyFilePath || DEFAULT_CONFIG.ga4.keyFilePath});
  }

  async fetchAnalyticsData() {
    try {
      const [response] = await this.client.runReport({
        property: `properties/${CONFIG.ga4.propertyId}`,
        dateRanges: [
          {
            startDate: CONFIG.dateRange.startDate || DEFAULT_CONFIG.dateRange.startDate,
            endDate: CONFIG.dateRange.endDate || DEFAULT_CONFIG.dateRange.endDate,
          },
        ],
        dimensions: [{name: 'pagePath'}],
        metrics: [{name: 'screenPageViews'}, {name: 'totalUsers'}],
      });

      console.log('The analysis results from GA have been successfully fetched.');

      return response;
    } catch (error) {
      throw new CustomError(`Error fetching data from GA: ${error.message}`);
    }
  }
}

export class KintoneService {
  constructor() {
    this.client = new KintoneRestAPIClient({
      baseUrl: CONFIG.kintone.baseUrl,
      auth: {apiToken: CONFIG.kintone.apiToken},
    });
  }

  async getFormFields() {
    const response = await this.client.app.getFormFields({
      app: CONFIG.kintone.appId,
    });
    return response.properties;
  }

  async getExistingApps(analyzedAppIds) {
    const response = await this.client.record.getAllRecords({
      app: CONFIG.kintone.appId,
      condition: `app_id in (${analyzedAppIds.join(',')})`,
    });
    return response.map((record) => record.app_id.value);
  }

  handleDateRange(configDate) {
    if (configDate === 'today') return DateFormatter.formatDate(new Date());

    if (configDate === 'yesterday') {
      const date = new Date();
      date.setDate(date.getDate() - 1);
      return DateFormatter.formatDate(date);
    }

    const daysAgoMatch = configDate.match(/^(\d+)daysAgo$/);
    if (!daysAgoMatch) return DateFormatter.formatDate(new Date(configDate));

    const numberOfDays = parseInt(daysAgoMatch[1], 10);
    const date = new Date();
    date.setDate(date.getDate() - numberOfDays);
    return DateFormatter.formatDate(date);
  }

  async updateRecords(totalsPerAppId, existingApps) {
    const startDate = CONFIG.dateRange.startDate || DEFAULT_CONFIG.dateRange.startDate;
    const endDate = CONFIG.dateRange.endDate || DEFAULT_CONFIG.dateRange.endDate;
    const formattedStartDate = this.handleDateRange(startDate);
    const formattedEndDate = this.handleDateRange(endDate);

    const recordsToUpdate = Array.from(totalsPerAppId, ([appId, data]) => {
      if (existingApps.includes(appId) === false) return null;
      return {
        updateKey: {
          field: 'app_id',
          value: appId.toString(),
        },
        record: {
          [CONFIG.kintone.fields.ga_screen_page_views || DEFAULT_CONFIG.kintone.fields.ga_screen_page_views]: {
            value: data.screenPageViews,
          },
          [CONFIG.kintone.fields.ga_total_users || DEFAULT_CONFIG.kintone.fields.ga_total_users]: {
            value: data.totalUsers,
          },
          [CONFIG.kintone.fields.ga_start_date || DEFAULT_CONFIG.kintone.fields.ga_start_date]: {
            value: formattedStartDate,
          },
          [CONFIG.kintone.fields.ga_end_date || DEFAULT_CONFIG.kintone.fields.ga_end_date]: {
            value: formattedEndDate,
          },
        },
      };
    }).filter((record) => record !== null);

    if (recordsToUpdate.length === 0) {
      console.log('No records to update.');
      return;
    }

    try {
      await this.client.record.updateAllRecords({
        app: CONFIG.kintone.appId,
        records: recordsToUpdate,
      });

      console.log(
        `The analysis results from GA have been successfully updated to ${CONFIG.kintone.baseUrl}/k/${CONFIG.kintone.appId}`
      );
    } catch (error) {
      throw new CustomError(`Error updating data to kintone: ${error.message}`);
    }
  }
}

export class ConfigValidator {
  static validateConfig() {
    const {kintone, ga4} = CONFIG;
    const {baseUrl, appId, apiToken} = kintone;
    const {propertyId} = ga4;

    const baseUrlValidation = this.validateBaseUrl(baseUrl);
    const appIdValidation = this.validateAppId(appId);
    const apiTokenValidation = this.validateApiToken(apiToken);
    const propertyIdValidation = this.validatePropertyId(propertyId);
    const keyFilePathValidation = this.validateKeyFilePath();

    if (baseUrlValidation.isValid === false) return {isValid: false, message: baseUrlValidation.message};
    if (appIdValidation.isValid === false) return {isValid: false, message: appIdValidation.message};
    if (apiTokenValidation.isValid === false) return {isValid: false, message: apiTokenValidation.message};
    if (propertyIdValidation.isValid === false) return {isValid: false, message: propertyIdValidation.message};
    if (keyFilePathValidation.isValid === false) return {isValid: false, message: keyFilePathValidation.message};

    return {isValid: true, message: 'Config is valid.'};
  }

  static validateBaseUrl(url) {
    if (!url) return {isValid: false, message: 'Base URL is required.'};
    return {isValid: true, message: 'Base URL is valid.'};
  }

  static validateAppId(id) {
    if (!id) return {isValid: false, message: 'App ID is required.'};
    if (isNaN(id)) return {isValid: false, message: 'App ID must be a number.'};
    return {isValid: true, message: 'App ID is valid.'};
  }

  static validateApiToken(token) {
    if (!token) return {isValid: false, message: 'API Token is required.'};
    return {isValid: true, message: 'API Token is valid.'};
  }

  static validatePropertyId(id) {
    if (!id) return {isValid: false, message: 'Property ID is required.'};
    if (isNaN(id)) return {isValid: false, message: 'Property ID must be a number.'};
    return {isValid: true, message: 'Property ID is valid.'};
  }

  static validateKeyFilePath() {
    const filePath = CONFIG.ga4.keyFilePath || DEFAULT_CONFIG.ga4.keyFilePath;
    if (fs.existsSync(filePath) === false) return {isValid: false, message: 'Key file path is invalid.'};
    return {isValid: true, message: 'Key file path is valid.'};
  }

  static validateFormFields(formFields, configs) {
    const {kintone: {fields}} = configs;

    const gaScreenPageViews = fields.ga_screen_page_views || DEFAULT_CONFIG.kintone.fields.ga_screen_page_views;
    const gaTotalUsers = fields.ga_total_users || DEFAULT_CONFIG.kintone.fields.ga_total_users;
    const gaStartDate = fields.ga_start_date || DEFAULT_CONFIG.kintone.fields.ga_start_date;
    const gaEndDate = fields.ga_end_date || DEFAULT_CONFIG.kintone.fields.ga_end_date;

    if (!(gaScreenPageViews in formFields)) return {isValid: false, message: `${gaScreenPageViews} field code is invalid.`};
    if (!(gaTotalUsers in formFields)) return {isValid: false, message: `${gaTotalUsers} field code is invalid.`};
    if (!(gaStartDate in formFields)) return {isValid: false, message: `${gaStartDate} field code is invalid.`};
    if (!(gaEndDate in formFields)) return {isValid: false, message: `${gaEndDate} field code is invalid.`};

    return {isValid: true, message: 'Form fields are valid.'};
  }
}

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    this.client = new BetaAnalyticsDataClient({keyFile: CONFIG.ga4.keyFilePath || DEFAULT_CONFIG.ga4.keyFilePath});

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      const [response] = await this.client.runReport({
        property: `properties/${CONFIG.ga4.propertyId}`,
        dateRanges: [
          {
            startDate: CONFIG.dateRange.startDate || DEFAULT_CONFIG.dateRange.startDate,
            endDate: CONFIG.dateRange.endDate || DEFAULT_CONFIG.dateRange.endDate,
          },
        ],
        dimensions: [{name: 'pagePath'}],
        metrics: [{name: 'screenPageViews'}, {name: 'totalUsers'}],
      });

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/*
 * ga integration sample program
 * Copyright (c) 2025 Cybozu
 *
 * Licensed under the MIT License
 * <https://opensource.org/license/mit/>
 */
export const CONFIG = {
  kintone: {
    baseUrl: '',
    appId: '',
    apiToken: '',
    fields: {
      ga_start_date: '',
      ga_end_date: '',
      ga_screen_page_views: '',
      ga_total_users: '',
    },
  },
  ga4: {
    propertyId: '',
    keyFilePath: '',
  },
  dateRange: {
    startDate: '',
    endDate: '',
  },
};

export const DEFAULT_CONFIG = {
  kintone: {
    fields: {
      ga_start_date: 'ga_start_date',
      ga_end_date: 'ga_end_date',
      ga_screen_page_views: 'ga_screen_page_views',
      ga_total_users: 'ga_total_users',
    },
  },
  ga4: {
    keyFilePath: './g4-key.json',
  },
  dateRange: {
    startDate: '30daysAgo',
    endDate: 'today',
  },
};

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node index.js

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The analysis results from GA have been successfully fetched.
The analysis results from GA have been successfully updated to https://XXXX