handler-module implementation

Author: Resul Avan

.gitignore

@@ -102,7 +102,8 @@ firebase-debug.log
 node_modules
 
 # modules
-*/lib
+lib
+**/*.tar.gz
 
 # firebase
 functions/nuxt.config.ts

functions/modules/README.md

@@ -0,0 +1,24 @@
+# modules
+
+## build
+    npm i
+    npm run build
+    
+## install local modules
+    npm i <local-path-of-the-module>
+
+or 
+    npm i <tar.gz-path-of-the-module>   
+    
+
+sample
+
+    npm i ../modules/types-module
+    npm i ../modules/types-module/types-module-1.0.0.tgz
+
+## remove local modules
+    npm remove <package-name-of-the-module>
+
+sample
+
+    npm remove types-module

functions/modules/handlers-module/README.md

@@ -0,0 +1,11 @@
+# types module
+
+## build
+    npm i
+    npm run build
+    
+## install
+    npm i ../modules/types-module
+
+## remove local modules
+    npm remove types-module

functions/modules/handlers-module/package.json

@@ -0,0 +1,34 @@
+{
+  "name": "handlers-module",
+  "version": "1.0.0",
+  "description": "Common types between backend and frontend",
+  "main": "./lib/cjs/index.js",
+  "typings": "./lib/cjs/index.d.ts",
+  "scripts": {
+    "prebuild": "npm run lint && rm -rf ./lib",
+    "build": "tsc -p tsconfig.json && tsc -p tsconfig-cjs.json",
+    "lint": "tslint --project tsconfig.json",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "resul avan <[email protected]>",
+  "license": "ISC",
+  "devDependencies": {
+    "@types/pluralize": "0.0.29",
+    "prettier": "^2.0.5",
+    "tslint": "^6.1.2",
+    "tslint-config-prettier": "^1.18.0",
+    "typescript": "^3.9.7"
+  },
+  "dependencies": {
+    "@types/express": "^4.17.7",
+    "@types/uuid": "^8.0.0",
+    "express": "^4.17.1",
+    "firebase": "^7.16.1",
+    "firebase-admin": "^9.0.0",
+    "http-status-codes": "^1.4.0",
+    "sitemap": "^6.2.0",
+    "types-module": "file:../types-module",
+    "uuid": "^8.2.0"
+  }
+}

functions/src/api/api-handler.ts renamed to functions/modules/handlers-module/src/api/api-handler.ts

@@ -1,5 +1,4 @@
 import { NextFunction, Request, RequestHandler, Response } from 'express'
-import { OK } from 'http-status-codes'
 import admin from 'firebase-admin'
 import {
   extractHeadersFromRequest,
@@ -8,8 +7,8 @@ import {
   handlerCalledLog
 } from '../service/request-handler-service';
 import { getDecodedIdToken } from '../service/firebase-admin-service'
+import { ApiErrorCode } from 'types-module'
 import DecodedIdToken = admin.auth.DecodedIdToken
-import { ApiErrorCode } from 'common-types'
 
 export const extractHeaderHandler: RequestHandler = async (req: Request, res: Response, next: NextFunction) => {
   await extractHeadersFromRequest(req)
@@ -37,8 +36,3 @@ export const tokenHandler: RequestHandler = async (req: Request, res: Response,
     })
     .catch((error: Error) => handleApiErrors(req, res, error))
 }
-
-export const healthyHandler: RequestHandler = (req, res) => {
-  console.log(`${req.originalUrl} - healthyHandler called`)
-  return res.status(OK).send('OK')
-}

functions/src/api/auth-handler.ts renamed to functions/modules/handlers-module/src/api/auth-handler.ts

@@ -1,7 +1,7 @@
 import { RequestHandler } from 'express'
 import { NO_CONTENT, OK } from 'http-status-codes'
 import { setCustomClaims, toAuthUser, validateClaimsAndGet } from '../service/firebase-admin-service'
-import { ApiErrorCode, FirebaseClaimKey, FirebaseClaims } from 'common-types'
+import { ApiErrorCode, FirebaseClaimKey, FirebaseClaims } from 'types-module'
 import {
   getDecodedIdTokenFromRequest,
   handleApiErrors,
@@ -27,6 +27,7 @@ export const verifyHandler: RequestHandler = async (req, res) => {
 }
 
 export const claimsHandler: RequestHandler = async (req, res) => {
+
   handlerCalledLog(req, 'claimsHandler')
   await getDecodedIdTokenFromRequest(req)
     .then(async (decodedIdToken: DecodedIdToken) => {

functions/modules/handlers-module/src/api/healthy-handler.ts

@@ -0,0 +1,8 @@
+import { Request, RequestHandler, Response } from 'express'
+import { OK } from 'http-status-codes'
+import { ProviderType } from 'types-module'
+
+export const healthyHandler: RequestHandler = (req: Request, res: Response) => {
+  console.log(`${req.originalUrl} - healthyHandler called`, ProviderType.PASSWORD)
+  return res.status(OK).send('OK')
+}

functions/modules/handlers-module/src/api/index.ts

@@ -0,0 +1,4 @@
+export * from './healthy-handler'
+export * from './api-handler'
+export * from './auth-handler'
+export * from './notification-handler'

functions/src/api/notification-handler.ts renamed to functions/modules/handlers-module/src/api/notification-handler.ts

@@ -7,7 +7,7 @@ import {
   handlerCalledLog,
   handlerLog
 } from '../service/request-handler-service'
-import { ApiErrorCode, UserDevice } from 'common-types'
+import { ApiErrorCode, UserDevice } from 'types-module'
 import { deleteUserDevice, getPushNotification, getUserDevices } from '../service/firebase-admin-service'
 import DecodedIdToken = admin.auth.DecodedIdToken
 

functions/modules/handlers-module/src/config.ts

@@ -0,0 +1,25 @@
+import admin from 'firebase-admin'
+
+export class HandlerConfig {
+
+  static initializer: () => void
+
+  static defaultInitializer () {
+    admin.initializeApp({
+      credential: admin.credential.applicationDefault()
+    })
+  }
+
+  static setInitializer (initializer: () => void) {
+    this.initializer = initializer
+  }
+
+  static initialize () {
+    console.log('CUSTOM initializer: ', JSON.stringify(this.initializer))
+
+    if (admin.apps.length === 0) {
+      this.initializer ? this.initializer() : this.defaultInitializer()
+    }
+  }
+
+}