feature(User Validation): validate user signup and login

- install @hapi/joi and express-joi-validator
- validate user details
- customize validation error message
- create user schema
- create validator middleware

[Maintains #167727726]

.gitignore

@@ -13,3 +13,5 @@ package-lock.json
 # test build
 .nyc_output
 coverage
+
+.editorconfig

package.json

@@ -35,6 +35,7 @@
     "@babel/register": "^7.5.5",
     "@babel/runtime": "^7.5.5",
     "bcrypt": "^3.0.6",
+    "@hapi/joi": "^15.1.1",
     "cors": "^2.8.5",
     "debug": "^4.1.1",
     "dotenv": "^8.0.0",

src/middlewares/validator.js

@@ -0,0 +1,16 @@
+import Joi from '@hapi/joi';
+import response from '../utils/response';
+
+export default (schema) => (req, res, next) => {
+  if (!schema) return next();
+
+  const { body, params, query } = req;
+
+  Joi.validate({ ...body, ...params, ...query }, schema, {
+    abortEarly: false
+  }).then(() => next())
+    .catch((err) => {
+      const errors = err.details.map((e) => e.message);
+      return response(res, 400, 'error', errors);
+    });
+};

src/utils/messages.js

@@ -1,7 +1,13 @@
+/* eslint-disable no-useless-escape */
 const messages = {
   welcome: 'Welcome to Barefoot Nomad',
   apiV1Welcome: 'Welcome to Barefoot Nomad API (version 1)',
   notFound: 'Sorry, we cannot find this endpoint',
+  validEmail: 'Enter a valid email address',
+  validName: 'Name must be alphabet without number',
+  validPassword: 'Minimum of 6 letters, a character and number required',
+  label: 'error',
+  joiError: 'child \"body\" fails because [child \"error\" fails because ',
 };
 
 export default messages;

src/validation/JoiValidator.js

@@ -0,0 +1,22 @@
+import Joi from '@hapi/joi';
+
+/** *
+ *  Object that help to validate user details
+ */
+const JoiValidation = {
+
+  validateString() {
+    return Joi.string();
+  },
+
+  validateEmail() {
+    return Joi.string().email();
+  },
+
+  validatePassword() {
+    return Joi.string().min(8).strict()
+      .required();
+  },
+};
+
+export default JoiValidation;

src/validation/userSchema.js

@@ -0,0 +1,21 @@
+import Joi from '@hapi/joi';
+import JoiValidator from './JoiValidator';
+
+
+const signUpSchema = Joi.object({
+  email: JoiValidator.validateEmail().required(),
+  password: JoiValidator.validatePassword().required(),
+  firstName: JoiValidator.validateString().required(),
+  lastName: JoiValidator.validateString().required(),
+  phoneNo: JoiValidator.validateString().required(),
+});
+
+
+const signInSchema = Joi.object({
+  email: JoiValidator.validateEmail().required(),
+  password: JoiValidator.validatePassword().required(),
+});
+
+export {
+  signUpSchema, signInSchema
+};