28-03-mutation-resolver

28 GraphQL/backend/graphql/resolvers.js

@@ -1,8 +1,27 @@
+const bcrypt = require('bcryptjs');
+
+const User = require('../models/user');
+
+/**
+ *  All ROOT RESOLVERS RECEIVE (args, context, info) ARGS
+ *  NOTE CONFIGURATION IN app.js INJECTING req,res INTO context ARG
+ */
 module.exports = {
-    hello() {
-        return {
-            text: 'Hello World!',
-            views: 1,
-        };
+    createUser: async ({ userInput }, _context, _info) => {
+        // const email = source.userInput.email;
+        const existingUser = await User.findOne({ email: userInput.email });
+        if (existingUser) {
+            const error = new Error('User exists already!');
+            throw error;
+        }
+
+        const hashPw = await bcrypt.hash(userInput.password, 12);
+        const user = new User({
+            email: userInput.email,
+            name: userInput.name,
+            password: hashPw,
+        });
+        const createdUser = await user.save();
+        return { ...createdUser._doc, _id: createdUser._id.toString() };
     },
 };

28 GraphQL/backend/graphql/schema.js

@@ -26,11 +26,16 @@ module.exports = buildSchema(`
         password: String!
     }
 
+    type RootQuery {
+        hello: String
+    }
+
     type RootMutation {
         createUser(userInput: UserData): User
     }
 
     schema {
+        query: RootQuery
         mutation: RootMutation
     }
 `);