// /user/:id
{
  "name": "hoge",
  "age": "25"
}

// /user/:id
{  
  "name": "hoge",
  "age": "25"
  "age_number": 25
}

// /version/1/user/:id
{
  "name": "hoge",
  "age": "25"
}

// /version/2/user/:id
{
  "name": "hoge",
  "age": 25
}

// /version/1/item/:id
{
  "userID": "user_ID" // :id
  "userReference": "<Ref>", // /version/1/user/:id
}

// /version/2/item/:id
{
  "userID": "user_ID" // :id
  "oldItem": "<Ref>", // /version/1/item/:id
}

// /version/1/user/:id
{
  "userID": "user_ID" // :id
  "pinComment": "<Ref>", // /version/1/item/:item_id/comment/:comment_id
}

// /version/1/item/:item_id/comment/:comment_id
{
  "userID": "user_ID" // :id
  "oldItem": "<Ref>", // /version/1/item/:id
}

{
  "name": "1amageek",
  "age": 31,
  "gender": "male"
}

{
  "followerCount": 2000,
  "followeeCount": 23
}

// Invitation
{
  "fromID": "userA",
  "toID": "userB",
  "status": "isUnopened"
}

// /user/:user_id
{
  "name": "hoge",
  "location": [0, 0],
  "age": "25"
}

// /user/:user_id/followers/:id
{
  "name": "hoge",
  "location": [0, 0],
  "age": "25"
}

import * as functions from 'firebase-functions';
import { Request, Response } from 'express';
import { dialogflow, DialogflowConversation, Parameters } from 'actions-on-google'

import { zenryokuBuyOrSell } from './bitbank-handler';
import { IntentNames, ZenryokuStatus } from './types';

const runtimeOptions = {
  timeoutSeconds: 10,
};

function intentHandler(request: Request, response: Response): void {
  const app = dialogflow();

  app.intent(IntentNames.Default, async (conv: DialogflowConversation, params: Parameters) => {
    conv.ask('まだ仮想通貨持ってないの？');
  });

  app.intent(IntentNames.Order, async (conv: DialogflowConversation, params: Parameters) => {
    const asset = params.Asset;
    const side = params.Side as ('buy' | 'sell');

    if (!asset || !side) {
      conv.close('エラーが発生しました');
    }

    conv.ask(`${asset}を全力${side === 'buy' ? '買い' : '売り'}します`);

    const result = await zenryokuBuyOrSell(`${asset}_jpy`, side);

    if (result === ZenryokuStatus.Done) {
      conv.close(`全力${side === 'buy' ? '買い' : '売り'}しました!`);
    } else if (result === ZenryokuStatus.Ordered) {
      conv.close(`全力で${side === 'buy' ? '買い' : '売り'}注文しました!`);
    } else {
      conv.close('エラーが発生しました');
    }
  });

  app.intent(IntentNames.Cancel, async (conv: DialogflowConversation, params: Parameters) => {
    conv.close('やめておきました');
  });

  app(request, response);
}

export const fulfillment = functions.runWith(runtimeOptions).https.onRequest((request, response) => intentHandler(request, response));

export enum IntentNames {
  Default = 'zenryoku-buy-sell',
  Order = 'zenryoku-buy-sell - order',
  Cancel = 'zenryoku-buy-sell - no',
}

export enum ZenryokuStatus {
  Done = 'DONE',
  Ordered = 'ORDERED',
  Error = 'ERROR',
}

import * as functions from 'firebase-functions';
import * as bitbank from 'node-bitbankcc';
import { ZenryokuStatus } from './types';

const limitMaxBuyRate = 0.8;
const limitMaxSellRate = 1;
const apiKey = process.env.BITBANK_API_KEY;
const apiSecret = process.env.BITBANK_API_SECRET;

export async function zenryokuBuyOrSell(pair: string, side: 'buy' | 'sell' = 'buy'): Promise<ZenryokuStatus> {
  try {
    const { baseAsset, quoteAsset } = getBaseAndQuoteAssetByPair(pair);
    const privateClient = getBitbankPrivateClient();
    const publicClient = getBitbankPublicClient();

    let price = 0;
    let freeAmount = 0;

    if (side === 'buy') {
      price = await getPriceByPairNameAndSide(publicClient, pair);
      freeAmount = await getAmountByAssetName(privateClient, quoteAsset);
    } else {
      freeAmount = await getAmountByAssetName(privateClient, baseAsset);
    }

    // market 買い注文では資産の80%までの注文しかできない
    const canBuyAmmount = Math.floor((freeAmount / price) * limitMaxBuyRate * 10000) / 10000;
    const canSellAmmount = Math.floor(freeAmount * limitMaxSellRate * 10000) / 10000;
    const orderResult = await privateClient.postOrder({ pair, amount: side === 'buy' ? `${canBuyAmmount}` : `${canSellAmmount}`, side, type: 'market' });

    // 約定を待つ
    await new Promise((resolve) => setTimeout(resolve, 3000));

    const order = await privateClient.getOrder({ order_id: orderResult.data.order_id, pair });

    if (!order || order.success !== 1) {
      return ZenryokuStatus.Error;
    }

    if (order.data.status === 'FULLY_FILLED') {
      return ZenryokuStatus.Done;
    }

    return ZenryokuStatus.Ordered;
  } catch (e) {
    console.log(e);
    return ZenryokuStatus.Error;
  }
}

function getBitbankPublicClient(): bitbank.PublicApi {
  const conf: bitbank.ApiConfig = {
    endPoint: 'https://public.bitbank.cc',
    keepAlive: false,
    timeout: 3000,
  };
  return new bitbank.PublicApi(conf);
}

function getBitbankPrivateClient(): bitbank.PrivateApi {
  const conf: bitbank.PrivateApiConfig = {
    endPoint: 'https://api.bitbank.cc/v1',
    apiKey: functions.config().api.key,
    apiSecret: functions.config().api.secret,
    keepAlive: false,
    timeout: 3000,
  };
  return new bitbank.PrivateApi(conf);
}

function getBaseAndQuoteAssetByPair(pair: string): { baseAsset: string, quoteAsset: string } {
  const sepaPair = pair.split('_');
  return { baseAsset: sepaPair[0], quoteAsset: sepaPair[1] };
}

async function getAmountByAssetName(client: bitbank.PrivateApi, asset: string): Promise<number> {
  const assets = await client.getAssets();

  if (!assets || assets.success !== 1) {
    return 0;
  }

  return +assets.data.assets.find((a) => a.asset === asset).free_amount;
}

export async function getPriceByPairNameAndSide(client: bitbank.PublicApi, pair: string, side: 'buy' | 'sell' = 'buy'): Promise<number> {
  const ticker = await client.getTicker({ pair });

  if (!ticker || ticker.success !== 1) {
    return 0;
  }

  return side === 'buy' ? +ticker.data.buy : +ticker.data.sell;
}

$ firebase functions:config:set api.key="apikey" api.secret="apisecret"
$ firebase deploy --only functions

{
  "hosting": {
    "public": "dist",
    "ignore": [ /*略*/ ],
    "rewrites": [
      {
        "source": "**",
        "destination": "/index.html"
      }
    ]
  }
}

  "rewrites": [
      {
        "source": "/stock/*",
        "function": "stockpage"
      },
      {
        "source": "**",
        "destination": "/index.html"
      }
  ]

const functions = require('firebase-functions')
const admin = require('firebase-admin')
const db = admin.firestore()

const CONFIG = functions.config()
const app_domain = CONFIG.app.domain
const OGP_IMG_WIDTH = 1200
const OGP_IMG_HEIGHT = 630

const func = functions.https.onRequest((req, res) => {
  const [, , stockid] = req.path.split('/')
  return db.collection('user-stocks').doc(stockid).get().then(snap => {
    if (!snap) {
      res.status(404).end('404 Not Found')
      return
    }
    const stockItem = snap ? snap.data() : {}
    const uname = stockItem.uname || ''
    const html = createHtml(uname, stockid)
    res.set('Cache-Control', 'public, max-age=600, s-maxage=600')
    res.status(200).end(html)
    return
  }).catch((err) => {
    console.warn(err)
    // 略 : エラー時はデフォルトのhtml（固定のOGP）を返す
  })
});

const createHtml = (uname, stockid) => {
  const SITEURL = `https://${app_domain}`
  const PAGEURL = `${SITEURL}/stock/${stockid}`
  const TITLE = `view ${escapeHtml(uname)}'s colorsets on colorinco`
  const DESCRIPTION = 'カラーインコはTwitterでお気に入りしている画像のカラーパレットを表示・ストックできるサービスです。'
  return `<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1.0">
    <title>colorinco</title>
    <meta property="og:title" content="${TITLE}">
    <meta property="og:image" content="${SITEURL}/ogp/stockimg/${stockid}">
    <meta property="og:image:width" content="${OGP_IMG_WIDTH}">
    <meta property="og:image:height" content="${OGP_IMG_HEIGHT}">
    <meta property="og:description" content="${DESCRIPTION}">
    <meta property="og:url" content="${PAGEURL}">
    <meta property="og:type" content="article">
    <meta property="og:site_name" content="colorinco*カラーインコ">
    <meta name="twitter:site" content="${SITEURL}">
    <meta name="twitter:card" content="summary_large_image">
    <meta name="twitter:title" content="${TITLE}">
    <meta name="twitter:image" content="${SITEURL}/ogp/stockimg/${stockid}">
    <meta name="twitter:description" content="${DESCRIPTION}">
  </head>
  <body>
    <script type="text/javascript">window.location="/_stock/${stockid}";</script>
  </body>
</html>
`
}

module.exports = func

export default new Router({
  mode: 'history',
  routes: [
    // ...略
    {
      path: '/_stock/:stockid',
      redirect: '/stock/:stockid'
    }
    // ...略
  ]
})

  "hosting": {
    "public": "dist",
    "ignore": [/*略*/],
    "rewrites": [
      {
        "source": "/stock/*",
        "function": "stockpage"
      },
      { /* 追加↓ */
        "source": "/ogp/stockimg/*",
        "function": "stockimg"
      },
      {
        "source": "**",
        "destination": "/index.html"
      }
    ]
  }

const functions = require('firebase-functions')
const admin = require('firebase-admin')
const db = admin.firestore()
const Canvas = require('canvas-prebuilt')
const Image = Canvas.Image
// カラーセットをタイル状に配置するための座標計算を行うクラス
const TileLayout = require('./src/TileLayout')

// OGP関連の定数
const OGP_IMG_WIDTH = 1200
const OGP_IMG_HEIGHT = 630
const OGP_IMG_ARTWORK_WIDTH = OGP_IMG_WIDTH * 0.5

// "/ogp/stockimg/:sid" の処理本体（最後にexportしています）
const func = functions.https.onRequest((req, res) => {
  const [, , , stockid] = req.path.split('/')
  const canvas = new Canvas(OGP_IMG_WIDTH, OGP_IMG_HEIGHT)
  res.set('Cache-Control', 'public, max-age=600, s-maxage=600')

  // DBからstock itemの情報を取得
  // ここからの処理は全てPromiseチェーンにぶら下げる
  return db.collection('user-stocks').doc(stockid).get().then(snap => {
    if (!snap) {
      res.status(404).end('404 Not Found')
      return null
    }
    return snap.data();
  }).then((stockItem) => {
    // DBから取得したstock itemからカラーセットを取得し、タイル状に色を描画
    if (!stockItem) { return null }
    // ... 座標計算等 ... 
    drawColorset(canvas, colorset, layout, /*...略*/)
    // 画像をダウンロードして描画。非同期なのでPromiseを返す
    return drawImgWithUrl(canvas, imgUrl, /*...略*/)
  }).then((isSuccess) => {
    // エラーなく完了したらCanvasの内容をpngで出力
    if (isSuccess) {
      res.writeHead(200, {'Content-Type': 'image/png'})
      canvas.pngStream().pipe(res)
    } else {
      res.status(500).end('500 Server Internal Error')
    }
    return isSuccess
  }).catch((err) => {
    res.status(500).end('500 Server Internal Error')
  })
})

<!DOCTYPE html>
<html>
<head>
  <meta charset=utf-8>
  <meta name=viewport content="width=device-width,initial-scale=1">
  <title>colorinco＊カラーインコ</title>
  <!-- GOPのmetaタグがいっぱい -->
  <link href=/static/css/app.78eb8346fb720a49941bfeca9b64356f.css rel=stylesheet>
</head>
<body>
  <div id=splash style="height:100%;font-family:sans-serif;padding:30% 10%;text-align:center;font-size:20pt;color:#aaa;">colorinco</div>
  <div id=app></div>
  <script type=text/javascript src=/static/js/manifest.2ae2e69a05c33dfc65f8.js></script>
  <script type=text/javascript src=/static/js/vendor.4bd743272820dc4398f1.js></script>
  <script type=text/javascript src=/static/js/app.d4cd8aa92b80dfd544ab.js></script>
</body>
</html>

const webpackConfig = merge(baseWebpackConfig, {
  /*...*/
  plugins: [
    // 長い長いプラグインのリスト
    ,
    new ManifestPlugin()
  ]
})

{
  "vendor.js": "/static/js/vendor.4bd743272820dc4398f1.js",
  "vendor.js.map": "/static/js/vendor.4bd743272820dc4398f1.js.map",
  "app.js": "/static/js/app.d4cd8aa92b80dfd544ab.js",
  "app.css": "/static/css/app.78eb8346fb720a49941bfeca9b64356f.css",
  // ... 下略
}

'use strict'
const childProcess = require('child_process')

const manifest = require('../dist/manifest')
const TARGET_FILES = ['manifest.js', 'app.js', 'vendor.js', 'app.css']

const cmd = 'firebase functions:config:set ' +
  TARGET_FILES
    .map(name => `${name}=“${manifest[name].split('/').pop()}”`)
    .join(' ')

console.log(cmd)
childProcess.exec(cmd, (error, stdout, stderr) => {
  if(error) {
    console.warn(stderr)
  } else {
    console.log(stdout)
  }
})

firebase functions:config:set hosting.manifest.manifest.js="manifest.2ae2e69a05c33dfc65f8.js" hosting.manifest.app.js="app.d4cd8aa92b80dfd544ab.js" hosting.manifest.vendor.js="vendor.4bd743272820dc4398f1.js" hosting.manifest.app.css="app.78eb8346fb720a49941bfeca9b64356f.css"
✔  Functions config updated.

Please deploy your functions for the change to take effect by running firebase deploy --only functions

"scripts": {
  "release-deploy": "node build/build.js; firebase use release; node build/set-functions-envs.js; firebase deploy; firebase use staging;"
}

// ...略... //
const CONFIG = functions.config()
const hosting_manifest = {
  'manifest.js': CONFIG.hosting.manifest.manifest.js,
  'app.js': CONFIG.hosting.manifest.app.js,
  'vendor.js': CONFIG.hosting.manifest.vendor.js,
  'app.css': CONFIG.hosting.manifest.app.css
}

// ...略... //

const createHtml = (uname, stockid) => {
  // ...略... //
  return `<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1.0">
    <title>colorinco</title>
    <meta property="og:title" content="${TITLE}">
    /* 略 : metaタグたくさん */
    <link href="/static/css/${hosting_manifest['app.css']}" rel=stylesheet>
  </head>
  <body>
    <div id="splash" style="height:100%;font-family:sans-serif;padding:30% 10%;text-align:center;font-size:20pt;color:#aaa;">colorinco</div>
    <div id=app></div>
    <script type="text/javascript" src="/static/js/${hosting_manifest['manifest.js']}"></script>
    <script type="text/javascript" src="/static/js/${hosting_manifest['vendor.js']}"></script>
    <script type="text/javascript" src="/static/js/${hosting_manifest['app.js']}"></script>    
  </body>
</html>
`
}

return StreamBuilder<QuerySnapshot>(
      stream: firestore.collection('messages').snapshots(),
      builder: (BuildContext context, AsyncSnapshot<QuerySnapshot> snapshot) {
        if (!snapshot.hasData) return const Text('Loading...');
        final int messageCount = snapshot.data.documents.length;
        return ListView.builder(
          itemCount: messageCount,
          itemBuilder: (_, int index) {
            final DocumentSnapshot document = snapshot.data.documents[index];
            return ListTile(
              title: Text(document['message'] ?? '<No message retrieved>'),
              subtitle: Text('Message ${index + 1} of $messageCount'),
            );
          },
        );
      },
    );
  }

firestore.collection('messages').document().setData({
      'message': 'Hello world!',
      'created_at': FieldValue.serverTimestamp(),
    });

FirebaseApp.configure()

#if DEBUG
    let filePath = Bundle.main.path(forResource: "GoogleService-develop-Info", ofType:"plist")
#else
    let filePath = Bundle.main.path(forResource: "GoogleService-Info", ofType:"plist")
#endif
let options = FirebaseOptions(contentsOfFile:filePath!)
FirebaseApp.configure(options: options!)

$firebase init

{
  "projects": {
    "default": "firestoresample-xxxx"
  }
}

{
  "projects": {
    "release": "yourapp-production", #本番環境
    "develop": "yourapp-develop" #開発環境
  }
}

$ firebase use develop #開発環境に切り替える
Now using alias develop (yourapp-develop)
$ firebase use release #本番環境に切り替える
Now using alias release (yourapp-production)

import UIKit
import FirebaseRemoteConfig
class ViewController: UIViewController {

    @IBOutlet weak var button: UIButton!
    override func viewDidLoad() {
        super.viewDidLoad()
        let remoteConfig = RemoteConfig.remoteConfig()
        let expirationDuration: TimeInterval = 3.0
        remoteConfig.fetch(withExpirationDuration: TimeInterval(expirationDuration)) { (status, error) -> Void in
            if status == .success {
                print("Config fetched!")
                remoteConfig.activateFetched()
                let isTestUser: Bool = remoteConfig["register_button_test"].boolValue
                if isTestUser {
                    self.button.backgroundColor = UIColor.red
                }
            } else {
                print("Error: \(error?.localizedDescription ?? "No error available.")")
            }
        }
    }
}

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        FirebaseApp.configure()
        let remoteConfig = RemoteConfig.remoteConfig()
        let expirationDuration: TimeInterval = 3.0
        remoteConfig.fetch(withExpirationDuration: TimeInterval(expirationDuration)) { (status, error) -> Void in
            if status == .success {
                print("Config fetched!")
                remoteConfig.activateFetched()
            } else {
                print("Error: \(error?.localizedDescription ?? "No error available.")")
            }
        }
        return true
    }

import Foundation
import FirebaseRemoteConfig

enum FirebaseRemoteConfigBoolParameter: String {
    case registerButtonTest = "register_button_test"

    var defaultValue: Bool {
        switch self {
        case .registerButtonTest: return false
        }
    }
}

class FirebaseRemoteConfigBoolParameterStore {
    func value(forKey param: FirebaseRemoteConfigBoolParameter) -> Bool {
        let remoteConfig = RemoteConfig.remoteConfig()
        remoteConfig.setDefaults([param.rawValue: param.defaultValue as NSObject])
        return remoteConfig[param.rawValue].boolValue
    }
}

import UIKit
import FirebaseRemoteConfig
class ViewController: UIViewController {

    @IBOutlet weak var button: UIButton!
    override func viewDidLoad() {
        let isTestUser: Bool = FirebaseRemoteConfigBoolParameterStore().value(forKey: .registerButtonTest)
        if isTestUser {
            self.button.backgroundColor = UIColor.red
        }
    }
}

let sfReference = db.collection("users").document(userID)
db.runTransaction({ (transaction, errorPointer) -> Any? in
    let sfDocument: DocumentSnapshot
    do {
        try sfDocument = transaction.getDocument(sfReference)
    } catch let fetchError as NSError {
        errorPointer?.pointee = fetchError
        return nil
    }

    if sfDocument.exists {
        print("すでにuserIDが登録されています")
    }else {
        transaction.setData(userData, forDocument: sfReference)
    }

    return nil
}) { (object, error) in
    if let error = error {
        print("Transaction failed: \(error)")
    } else {
        print("Transaction successfully committed!")
    }
}

match /users/{userID} {
      allow read: if request.auth.uid != null;
      allow create: if request.auth.uid == userID
                    && request.resource.data.createdAt != null
      allow update: if request.auth.uid == userID
                    && request.resource.data.createdAt == resource.data.createdAt;

static func exists(path: String, completion: @escaping ((Bool) -> Void)) {
    firestore.document(path).getDocument(completion: { snapshot, _ in
        completion(snapshot?.exists ?? false)
    })
}

Firestore.firestore()
    .collection(Room.collectionName)
    .document(roomId)
    .collection(ChatMessage.collectionName)
    .getDocuments() { querySnapshot, error in
        ...

        let messageId   = documentSnapshot.documentID
        let messageData = documentSnapshot.data()
        guard var newMessage = ChatMessage.initialize(id: messageId, json: messageData) else {
            continue
        }

        ...

        // 相手のメッセージ かつ 未読のメッセージを保持するための配列
        var unreadPartnerMessageList: [ChatMessage] = []

        ...

        if newMessage.userId != self.myUserId && !newMessage.isReadUserId.contains(self.myUserId) {
            newMessage.isReadUserId.append(self.myUserId)
            unreadPartnerMessageList.append(newMessage)
        }

        ...

        resetUnreadCount(unreadOtherMessageList)

        ...
    }

func resetUnreadCount(targetMessageList: [ChatMessage]) {
    guard let messageCollectionRef = self.messageCollectionRef, !targetMessageList.isEmpty else {
        return
    }

    let batch = FirestoreManager.shared.db.batch()

    for message in targetMessageList {
        guard let messageId = message.id else { continue }
        batch.updateData(
            [ ChatMessage.CodingKeys.isReadUserId.rawValue: FieldValue.arrayUnion([self.myUserId]) ],
            forDocument: messageCollectionRef.document(messageId)
        )
    }

    batch.commit { error in
        if let error = error { print(error) }
    }
}

[ ChatMessage.CodingKeys.isReadUserId.rawValue: FieldValue.arrayUnion([self.myUserId]) ]

Firestore.firestore()
    .collection(Room.collectionName)
    .document(roomId)
    .collection(ChatMessage.collectionName)
    .addSnapshotListener(includeMetadataChanges: true) { snapshot, error in

        ...

        // 更新されたデータがあるかどうかのフラグ
        var isExistChangedData = false

        // 変更メッセージの取得
        for documentChange in snapshot.documentChanges {

            // 無駄な更新を避けるために, 既に取得してあるメッセージ(oldMessage)と変更後のメッセージ(changedMessage)に差分がある場合のみ, 保持するフラグを有効にする
            if oldMessage.isDiff(chatMessage: changedMessage) {
                isExistChangedData = true
            }

            // 各種変更処理(ここで新しい isReadUserId が入る) → 保持

            ...

        }

        // 新規のメッセージと更新後のメッセージをUIに反映する
        self.updateMessageCompletion?(newMessageCellViewModelList, changedMessageCellViewModelList)
    }

Firestore.firestore()
    .collection(Room.collectionName)
    .document(roomId)
    .collection(ChatMessage.collectionName)
    .addSnapshotListener(includeMetadataChanges: true) { snapshot, error in

        ...
        // 新規メッセージの取得
        for document in snapshot.documents {

            guard var newMessage = ChatMessage.initialize(id: messageId, json: document.data()) else {
                continue
            }

            // まだ送信済みになっていないメッセージの場合
            if newMessage.isSent == nil || newMessage.isSent != true {
                // 書き込み待ち以外は送信済みとみなす
                newMessage.isSent = !document.metadata.hasPendingWrites
                notSendMessageList.updateValue(newMessage.isSent, forKey: messageId)
            }

            ...

        }

        ...

        // 送信ステータス更新処理
        self.updateMessageIsSent(targetList: notSendMessageList)
    }

Returns YES if the snapshot was created from cached data rather than guaranteed up-to-date server data.
If your listener has opted into metadata updates (via includeMetadataChanges:YES)
you will receive another snapshot with isFromCache equal to NO once the client has received up-to-date data from the backend.

$ yarn add ts-node faker commander

functions
└── cli
    ├── index.ts
    └── user.ts

{
  "scripts": {
    "cli": "ts-node cli/index.ts"
  }
}

import * as admin from 'firebase-admin'
import * as faker from 'faker'

// 共通化するために Admin SDK の初期化は index.ts で行う
const db = admin.firestore()
const batchSize = 500

// 作成用関数
export const createUsers = async (n: number) => {
  const usersRef = await db.collection('users')

  // 再帰関数
  const excuteBatch = async (size: number) => {
    if (size === 0) {
      return
    }
    // 500件を超えないようにする
    const length = Math.min(size, batchSize)
    const batch = db.batch()
    for (let i = 0; i < length; i = i + 1) {
      const user = {
        firstName: faker.name.firstName(),
        lastName: faker.name.lastName(),
        createdAt: admin.firestore.FieldValue.serverTimestamp(),
        updatedAt: admin.firestore.FieldValue.serverTimestamp(),
        isMock: true // 削除時のクエリ用フィールド
      }
      batch.create(usersRef.doc(), user)
    }
    const results = await batch.commit()
    // 書き込みが成功した分を引いた残りの件数を代入
    await excuteBatch(size - results.length)
  }
  await excuteBatch(n)
}

// 削除用関数
export const deleteUsers = async () => {
  // モックデータのみを500件ずつ取得
  const query = await db
    .collection('users')
    .where('isMock', '==', true)
    .limit(batchSize)

  // 再帰関数
  const executeBatch = async () => {
    const snapshot = await query.get()
    if (snapshot.size === 0) {
      return
    }
    const batch = db.batch()
    snapshot.docs.forEach(doc => {
      batch.delete(doc.ref)
    })
    await batch.commit()
    await executeBatch()
  }
  await executeBatch()
}

import * as admin from 'firebase-admin'
import * as program from 'commander'

// user.ts を import する前に Admin SDK を初期化する
admin.initializeApp()
admin.firestore().settings({ timestampsInSnapshots: true })

import { createUsers, deleteUsers } from './user'

program.version('1.0.0', '-v, --version')
program
  .command('user')
  .option('-d, --delete', 'delete only the created documents')
  .option('-n, --number <n>', 'A number of test documents', parseInt, 0)
  .description('create test user documents')
  .action(cmd => {
    if (cmd.number > 10000) {
      return console.error('The number must be 10000 or less')
    }
    const promise = cmd.delete ? deleteUsers() : createUsers(cmd.number)
    promise.then(() => console.log('Command has completed')).catch(console.error)
  })
program.parse(process.argv)

console.log('Firestore Mocking CLI')

$ yarn cli user -n 1000

yarn run v1.12.3
$ ts-node test/cli.ts user -n 1000
Firestore Mocking CLI
Command has completed
✨  Done in 6.71s.

$ yarn cli user -d

yarn run v1.12.3
$ ts-node test/cli.ts user -d
Firestore Mocking CLI
Command has completed
✨  Done in 5.73s.

 npm install -g @vue/cli
 npm install -g firebase-tools
 vue init pwa my-project # ここお好きなプロジェクト名
 cd my-project
 npm i
 npm i --save firebase
 firebase init

npm run build

<template>
  <div class="hello">
    <button @click="login">login</button>
  </div>
</template>

<script>
import firebase from 'firebase'

// コンソールから取得したコンフィグをペースト
const config = {
    apiKey: "",
    authDomain: "hogefuga.firebaseapp.com",
    databaseURL: "https://hogefuga.firebaseio.com",
    projectId: "hogefuga",
    storageBucket: "hogefuga.appspot.com",
    messagingSenderId: "323003240989"
  };
firebase.initializeApp(config)


export default {
  name: 'hello',
  data () {
    return {
      msg: 'Welcome to Your Vue.js PWA'
    }
  },
  methods: {
    login() {
      const provider = new firebase.auth.GoogleAuthProvider()
      firebase.auth().signInWithPopup(provider)
        .catch(error => alert(error.message))
        .then(data => {
          // ここにログインできたときの処理を書く
          alert('login success')
          console.log(data)
        })
    }
  }
}
</script>

npm run build
firebase deploy

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, v1.0.0, on Mac OS X 10.14.1 18B75, locale ja-JP)
[✗] Android toolchain - develop for Android devices
    ✗ Unable to locate Android SDK.
      Install Android Studio from: https://developer.android.com/studio/index.html
      On first launch it will assist you in installing the Android SDK components.
      (or visit https://flutter.io/setup/#android-setup for detailed instructions).
      If Android SDK has been installed to a custom location, set $ANDROID_HOME to that location.
      You may also want to add it to your PATH environment variable.

[✗] iOS toolchain - develop for iOS devices
    ✗ Xcode installation is incomplete; a full installation is necessary for iOS development.
      Download at: https://developer.apple.com/xcode/download/
      Or install Xcode via the App Store.
      Once installed, run:
        sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer
    ✗ libimobiledevice and ideviceinstaller are not installed. To install with Brew, run:
        brew update
        brew install --HEAD usbmuxd
        brew link usbmuxd
        brew install --HEAD libimobiledevice
        brew install ideviceinstaller
    ✗ ios-deploy not installed. To install with Brew:
        brew install ios-deploy
    ✗ CocoaPods not installed.
        CocoaPods is used to retrieve the iOS platform side's plugin code that responds to your plugin usage on the Dart side.
        Without resolving iOS dependencies with CocoaPods, plugins will not work on iOS.
        For more info, see https://flutter.io/platform-plugins
      To install:
        brew install cocoapods
        pod setup
[!] Android Studio (not installed)
[!] VS Code (version 1.29.1)
[!] Connected device
    ! No devices available

! Doctor found issues in 5 categories.

sudo xcodebuild -license accept  
brew update  
brew install --HEAD usbmuxd  
brew link usbmuxd  
brew install --HEAD libimobiledevice  
brew install ideviceinstaller

brew install ios-deploy
brew install cocoapods

brew update  
brew uninstall --ignore-dependencies libimobiledevice  
brew uninstall --ignore-dependencies usbmuxd  
brew install --HEAD usbmuxd  
brew unlink usbmuxd  
brew link usbmuxd  
brew install --HEAD libimobiledevice`  

Setting up CocoaPods master repo
  $ /usr/bin/git clone https://github.com/CocoaPods/Specs.git master --progress
  Cloning into 'master'...
  remote: Enumerating objects: 316, done.
  remote: Counting objects: 100% (316/316), done.
  remote: Compressing objects: 100% (231/231), done.
  remote: Total 2668685 (delta 125), reused 153 (delta 72), pack-reused 2668369
  Receiving objects: 100% (2668685/2668685), 597.44 MiB | 3.89 MiB/s, done.
  Resolving deltas: 100% (1573495/1573495), done.
  Checking out files: 100% (289715/289715), done.

CocoaPods 1.6.0.beta.2 is available.
To update use: `gem install cocoapods --pre`
[!] This is a test version we'd love you to try.

For more information, see https://blog.cocoapods.org and the CHANGELOG for this version at https://github.com/CocoaPods/CocoaPods/releases/tag/1.6.0.beta.2

Setup completed

[✓] iOS toolchain - develop for iOS devices (Xcode 10.1)
[!] Android Studio (not installed)
[!] VS Code (version 1.29.1)
[!] Connected device
    ! No devices available

[✗] Android toolchain - develop for Android devices
    ✗ Unable to locate Android SDK.
      Install Android Studio from: https://developer.android.com/studio/index.html
      On first launch it will assist you in installing the Android SDK components.
      (or visit https://flutter.io/setup/#android-setup for detailed instructions).
      If Android SDK has been installed to a custom location, set $ANDROID_HOME to that location.
      You may also want to add it to your PATH environment variable.

[!] Android toolchain - develop for Android devices (Android SDK 28.0.3)
    ✗ Android licenses not accepted.  To resolve this, run: flutter doctor --android-licenses

[✓] Android Studio (version 3.2)
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, v1.0.0, on Mac OS X 10.14.1 18B75, locale ja-JP)
[✓] Android toolchain - develop for Android devices (Android SDK 28.0.3)
[✓] iOS toolchain - develop for iOS devices (Xcode 10.1)
[✓] Android Studio (version 3.2)
[!] VS Code (version 1.29.1)
[✓] Connected device (1 available)

! Doctor found issues in 1 category.

Error: Could not link:
/usr/local/etc/bash_completion.d/brew

Please delete these paths and run `brew update`.
Error: Could not link:
/usr/local/share/zsh/site-functions/_brew

Please delete these paths and run `brew update`.
Error: Could not link:
/usr/local/share/man/man1/brew.1

Please delete these paths and run `brew update`.
Error: Could not link:
/usr/local/share/doc/homebrew

Please delete these paths and run `brew update`.
==> Tapping dart-lang/dart
Cloning into '/usr/local/Homebrew/Library/Taps/dart-lang/homebrew-dart'...
remote: Enumerating objects: 7, done.
remote: Counting objects: 100% (7/7), done.
remote: Compressing objects: 100% (7/7), done.
remote: Total 7 (delta 1), reused 2 (delta 0), pack-reused 0
Unpacking objects: 100% (7/7), done.
Tapped 3 formulae (35 files, 33.5KB).

rm -rf /usr/local/share/doc/homebrew
rm -rf /usr/local/etc/bash_completion.d/brew
rm -rf /usr/local/share/zsh/site-functions/_brew
rm -rf /usr/local/share/man/man1/brew.1
brew update

==> Installing dart from dart-lang/dart
==> Downloading https://storage.googleapis.com/dart-archive/channels/stable/release/2.1.0/sdk/dartsdk-macos-x64-release.zip
######################################################################## 100.0%
==> Caveats
Please note the path to the Dart SDK:
  /usr/local/opt/dart/libexec
==> Summary
🍺  /usr/local/Cellar/dart/2.1.0: 339 files, 300.1MB, built in 30 seconds

Dart VM version: 2.1.0 (Tue Nov 13 18:22:02 2018 +0100) on "macos_x64"

"Flutterfire-Sample" is not a valid Dart package name.

From the [Pubspec format description](https://www.dartlang.org/tools/pub/pubspec.html):

**DO** use `lowercase_with_underscores` for package names.

Package names should be all lowercase, with underscores to separate words,
`just_like_this`.  Use only basic Latin letters and Arabic digits: [a-z0-9_].
Also, make sure the name is a valid Dart identifier -- that it doesn't start
with digits and isn't a reserved word.

Creating project flutter_fire_sample...
  flutter_fire_sample/ios/Runner.xcworkspace/contents.xcworkspacedata (created)
  flutter_fire_sample/ios/Runner/Info.plist (created)
  flutter_fire_sample/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png (created)
  flutter_fire_sample/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png (created)
  flutter_fire_sample/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md (created)
  flutter_fire_sample/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json (created)
  flutter_fire_sample/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png (created)
  flutter_fire_sample/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@2x.png (created)
  flutter_fire_sample/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@1x.png (created)
  flutter_fire_sample/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@1x.png (created)
  flutter_fire_sample/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@1x.png (created)
  flutter_fire_sample/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png (created)
  flutter_fire_sample/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png (created)
  flutter_fire_sample/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@3x.png (created)
  flutter_fire_sample/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json (created)
  flutter_fire_sample/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@2x.png (created)
  flutter_fire_sample/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@3x.png (created)
  flutter_fire_sample/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@2x.png (created)
  flutter_fire_sample/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@3x.png (created)
  flutter_fire_sample/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@2x.png (created)
  flutter_fire_sample/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@1x.png (created)
  flutter_fire_sample/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@3x.png (created)
  flutter_fire_sample/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@2x.png (created)
  flutter_fire_sample/ios/Runner/Base.lproj/LaunchScreen.storyboard (created)
  flutter_fire_sample/ios/Runner/Base.lproj/Main.storyboard (created)
  flutter_fire_sample/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata (created)
  flutter_fire_sample/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme (created)
  flutter_fire_sample/ios/Flutter/Debug.xcconfig (created)
  flutter_fire_sample/ios/Flutter/Release.xcconfig (created)
  flutter_fire_sample/ios/Flutter/AppFrameworkInfo.plist (created)
  flutter_fire_sample/test/widget_test.dart (created)
  flutter_fire_sample/flutter_fire_sample.iml (created)
  flutter_fire_sample/.gitignore (created)
  flutter_fire_sample/.metadata (created)
  flutter_fire_sample/ios/Runner/AppDelegate.h (created)
  flutter_fire_sample/ios/Runner/main.m (created)
  flutter_fire_sample/ios/Runner/AppDelegate.m (created)
  flutter_fire_sample/ios/Runner.xcodeproj/project.pbxproj (created)
  flutter_fire_sample/android/app/src/main/res/mipmap-mdpi/ic_launcher.png (created)
  flutter_fire_sample/android/app/src/main/res/mipmap-hdpi/ic_launcher.png (created)
  flutter_fire_sample/android/app/src/main/res/drawable/launch_background.xml (created)
  flutter_fire_sample/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png (created)
  flutter_fire_sample/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png (created)
  flutter_fire_sample/android/app/src/main/res/values/styles.xml (created)
  flutter_fire_sample/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png (created)
  flutter_fire_sample/android/app/src/main/AndroidManifest.xml (created)
  flutter_fire_sample/android/gradle/wrapper/gradle-wrapper.properties (created)
  flutter_fire_sample/android/gradle.properties (created)
  flutter_fire_sample/android/settings.gradle (created)
  flutter_fire_sample/pubspec.yaml (created)
  flutter_fire_sample/README.md (created)
  flutter_fire_sample/lib/main.dart (created)
  flutter_fire_sample/android/app/build.gradle (created)
  flutter_fire_sample/android/app/src/main/java/com/example/flutterfiresample/MainActivity.java (created)
  flutter_fire_sample/android/build.gradle (created)
  flutter_fire_sample/android/flutter_fire_sample_android.iml (created)
  flutter_fire_sample/.idea/runConfigurations/main_dart.xml (created)
  flutter_fire_sample/.idea/libraries/Flutter_for_Android.xml (created)
  flutter_fire_sample/.idea/libraries/Dart_SDK.xml (created)
  flutter_fire_sample/.idea/libraries/KotlinJavaRuntime.xml (created)
  flutter_fire_sample/.idea/modules.xml (created)
  flutter_fire_sample/.idea/workspace.xml (created)
Running "flutter packages get" in flutter_fire_sample...     5.5s
Wrote 64 files.

All done!
[✓] Flutter is fully installed. (Channel stable, v1.0.0, on Mac OS X 10.14.1 18B75, locale ja-JP)
[✓] Android toolchain - develop for Android devices is fully installed. (Android SDK 28.0.3)
[✓] iOS toolchain - develop for iOS devices is fully installed. (Xcode 10.1)
[✓] Android Studio is fully installed. (version 3.2)
[✓] VS Code is fully installed. (version 1.29.1)
[✓] Connected device is fully installed. (2 available)

In order to run your application, type:

  $ cd flutter_fire_sample
  $ flutter run

Your application code is in flutter_fire_sample/lib/main.dart.