【X(Twitter) bot】GASでスプレッドシートから自動投稿するX Botの作り方：②テキスト

function main() {
  const service = getService();
  if (service.hasAccess()) {
    Logger.log("Already authorized");
  } else {
    const authorizationUrl = service.getAuthorizationUrl();
    Logger.log('Open the following URL and re-run the script: %s', authorizationUrl);
  }
}

function sendTweet() {
  var payload = {
    text: 'Test tweet from API!!!!!'
  }

  var service = getService();
  if (service.hasAccess()) {
    var url = `https://api.twitter.com/2/tweets`;
    var response = UrlFetchApp.fetch(url, {
      method: 'POST',
      'contentType': 'application/json',
      headers: {
        Authorization: 'Bearer ' + service.getAccessToken()
      },
      muteHttpExceptions: true,
      payload: JSON.stringify(payload)
    });
    var result = JSON.parse(response.getContentText());
    Logger.log(JSON.stringify(result, null, 2));
  } else {
    var authorizationUrl = service.getAuthorizationUrl();
    Logger.log('Open the following URL and re-run the script: %s',authorizationUrl);
  }
}

// CLIENT_IDと、CLIENT_SECRETはtwitter developerサイトから取得した値を用いる
const CLIENT_ID = 'XXXX'
const CLIENT_SECRET = 'XXXXX'


function getService() {
  pkceChallengeVerifier();
  const userProps = PropertiesService.getUserProperties();
  const scriptProps = PropertiesService.getScriptProperties();
  return OAuth2.createService('twitter')
    .setAuthorizationBaseUrl('https://twitter.com/i/oauth2/authorize')
    .setTokenUrl('https://api.twitter.com/2/oauth2/token?code_verifier=' + userProps.getProperty("code_verifier"))
    .setClientId(CLIENT_TEST_ID)
    .setClientSecret(CLIENT_TEST_SECRET)
    .setCallbackFunction('authCallback')
    .setPropertyStore(userProps)
    .setScope('users.read tweet.read tweet.write offline.access')
    .setParam('response_type', 'code')
    .setParam('code_challenge_method', 'S256')
    .setParam('code_challenge', userProps.getProperty("code_challenge"))
    .setTokenHeaders({
      'Authorization': 'Basic ' + Utilities.base64Encode(CLIENT_ID + ':' + CLIENT_SECRET),
      'Content-Type': 'application/x-www-form-urlencoded'
    })
}

function authCallback(request) {
  const service = getService();
  const authorized = service.handleCallback(request);
  if (authorized) {
    return HtmlService.createHtmlOutput('Success!');
  } else {
    return HtmlService.createHtmlOutput('Denied.');
  }
}

function pkceChallengeVerifier() {
  var userProps = PropertiesService.getUserProperties();
  if (!userProps.getProperty("code_verifier")) {
    var verifier = "";
    var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~";

    for (var i = 0; i < 128; i++) {
      verifier += possible.charAt(Math.floor(Math.random() * possible.length));
    }

    var sha256Hash = Utilities.computeDigest(Utilities.DigestAlgorithm.SHA_256, verifier)

    var challenge = Utilities.base64Encode(sha256Hash)
      .replace(/\+/g, '-')
      .replace(/\//g, '_')
      .replace(/=+$/, '')
    userProps.setProperty("code_verifier", verifier)
    userProps.setProperty("code_challenge", challenge)
  }
}

function logRedirectUri() {
  var service = getService();
  Logger.log(service.getRedirectUri());
}

function main() {
  const service = getService();
  if (service.hasAccess()) {
    Logger.log("Already authorized");
  } else {
    const authorizationUrl = service.getAuthorizationUrl();
    Logger.log('Open the following URL and re-run the script: %s', authorizationUrl);
  }
}



function sendTweet() {
  var tweetData = pickUpTweet("twitter_text"); // ツイートの内容を取得
  var payload = { text: tweetData }; 
  console.log(payload);
  
  var service = getService();
  if (service.hasAccess()) {
    var url = `https://api.twitter.com/2/tweets`;
    var response = UrlFetchApp.fetch(url, {
      method: 'POST',
      'contentType': 'application/json',
      headers: {
        Authorization: 'Bearer ' + service.getAccessToken()
      },
      muteHttpExceptions: true,
      payload: JSON.stringify(payload)
    });
    var result = JSON.parse(response.getContentText());
    Logger.log(JSON.stringify(result, null, 2));
  } else {
    var authorizationUrl = service.getAuthorizationUrl();
    Logger.log('Open the following URL and re-run the script: %s',authorizationUrl);
  }
}



function pickUpTweet(sheetName) {
  const sheet = SpreadsheetApp.getActiveSpreadsheet().getSheetByName(sheetName);
  const lastRow = sheet.getLastRow();
  const data = sheet.getRange("A1:F" + lastRow).getValues();

  const availableTweets = data.filter(function(value) {
    return value[1] == '';
  });

  if (availableTweets.length == 0) return { text: '', imageUrl: '' };

  const weights = availableTweets.map(function(value) {
    return value[4]; // Assuming the weight is in column E
  });

  const alias = new AliasMethod(weights);
  const selectedIndex = alias.next();

  const selectedRow = availableTweets[selectedIndex][0];
  Logger.log("Selected row: " + selectedRow); // Log the selected row number

  sheet.getRange(selectedRow + 1, 2).setValue(new Date());

  return availableTweets[selectedIndex][2];
}


class AliasMethod {
  constructor(weights) {
    this.prob = [];
    this.alias = [];
    this.n = weights.length;

    const small = [];
    const large = [];
    const scaledWeights = weights.map((w) => w * this.n);

    for (let i = 0; i < this.n; i++) {
      if (scaledWeights[i] < 1) {
        small.push(i);
      } else {
        large.push(i);
      }
    }

    while (small.length > 0 && large.length > 0) {
      const l = small.pop();
      const g = large.pop();

      this.prob[l] = scaledWeights[l];
      this.alias[l] = g;

      scaledWeights[g] = scaledWeights[g] + scaledWeights[l] - 1;

      if (scaledWeights[g] < 1) {
        small.push(g);
      } else {
        large.push(g);
      }
    }

    while (large.length > 0) {
      const g = large.pop();
      this.prob[g] = 1;
    }

    while (small.length > 0) {
      const l = small.pop();
      this.prob[l] = 1;
    }
  }

  next() {
    const i = Math.floor(Math.random() * this.n);
    return Math.random() < this.prob[i] ? i : this.alias[i];
  }
}

<blockquote class="twitter-tweet"><p lang="ja" dir="ltr">サーボモーター比較 <a href="https://t.co/vc3RfQmtsC">pic.twitter.com/vc3RfQmtsC</a></p>— てす (@tesu35416661269) <a href="https://twitter.com/tesu35416661269/status/1703560901708890465?ref_src=twsrc%5Etfw">September 18, 2023</a></blockquote> <script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>