Finish dojo implementation

backend/package.json

@@ -6,7 +6,7 @@
   "scripts": {
     "start": "nodemon -e js,json,graphql server.js",
     "lint:graphql": "node .graphql-schema-validator.js && echo 'Valid GraphQL schema!'",
-    "test:graphql": "echo TODO"
+    "test:graphql": "mocha --exit tests/graphql.js"
   },
   "repository": {
     "type": "git",
@@ -26,9 +26,14 @@
   "dependencies": {
     "express": "^4.17.1",
     "express-graphql": "^0.9.0",
-    "graphql": "^14.4.2"
+    "graphql": "^14.4.2",
+    "graphql-scalars": "^0.4.6",
+    "graphql-tools": "^4.0.5"
   },
   "devDependencies": {
-    "nodemon": "^1.19.1"
+    "chai": "^4.2.0",
+    "mocha": "^6.2.0",
+    "nodemon": "^1.19.1",
+    "supertest": "^4.0.2"
   }
 }

backend/resolvers/candidate.js

@@ -1,41 +1,30 @@
-const candidatesData = require('../data-sources/candidates.json');
+const {
+  getAllCandidates,
+  getCandidateById,
+  getCandidateByEmail,
+} = require('../services/candidates');
 
-const getCandidateById = (id) => {
-  const candidate = candidatesData[id];
-  if (!candidate) return null;
-
-  candidate.id = id;
-  return candidate;
-};
-
-const getCandidateByEmail = (email) => {
-  const candidates = Object.keys(candidatesData).map(key => {
-    const candidate = candidatesData[key];
-
-    return {
-      id: key,
-      ...candidate,
-    };
-  });
+const resolver = {
+  Query: {
+    candidates: () => getAllCandidates(),
 
-  return candidates.find(
-    candidate => candidate.email === email,
-  );
-};
+    candidate: (_, params, req, advancedDetails) => {
+      const { id, email } = params;
 
-const resolver = {
-  candidate: ({ id, email }) => {
-    if (id) return getCandidateById(id);
-    if (email) return getCandidateByEmail(email);
-    throw new Error('Specify either an "id" or the "email"');
+      if (id) return getCandidateById(id);
+      if (email) return getCandidateByEmail(email);
+      throw new Error('Specify either an "id" or the "email"');
+    },
   },
 
-  Candidate_id: (candidate) => candidate.id,
-  Candidate_name: (candidate) => candidate.name,
-  Candidate_email: (candidate) => candidate.email,
-  Candidate_profession: (candidate) => candidate.profession,
-  Candidate_photo: (candidate) => candidate.photo,
-  Candidate_following: (candidate) => candidate.following,
+  Candidate: {
+    id:         (candidate) => candidate.id,
+    name:       (candidate) => candidate.name,
+    email:      (candidate) => candidate.email,
+    profession: (candidate) => candidate.profession,
+    photo:      (candidate) => candidate.photo,
+    following:  (candidate) => candidate.following.map(getCandidateById),
+  },
 };
 
 module.exports = resolver;

backend/resolvers/company.js

@@ -1,7 +1,26 @@
-const companiesData = require('../data-sources/companies.json');
+const {
+  getAllCompanies,
+  getCompanyById,
+} = require('../services/companies');
+
+const { getJobAdById } = require('../services/jobAds');
 
 const resolver = {
-  company: () => 'TODO',
+  Query: {
+    companies: () => getAllCompanies(),
+
+    company: (_, params, req, advancedDetails) => {
+      const { id } = params;
+      return getCompanyById(id);
+    },
+  },
+
+  Company: {
+    id:         (company) => company.id,
+    name:       (company) => company.name,
+    photo:      (company) => company.photo,
+    openJobAds: (company) => company.openJobAds.map(getJobAdById),
+  },
 };
 
 module.exports = resolver;

backend/resolvers/index.js

@@ -1,6 +1,7 @@
 const fs = require('fs');
 
 let resolvers = {};
+let queryResolvers = {};
 
 fs.readdirSync('./resolvers')
   .filter(
@@ -13,7 +14,15 @@ fs.readdirSync('./resolvers')
       ...resolvers,
       ...fileResolvers,
     };
+
+    if (!fileResolvers.Query) return;
+
+    queryResolvers = {
+      ...queryResolvers,
+      ...fileResolvers.Query,
+    };
   });
 
+resolvers.Query = queryResolvers;
 
 module.exports = resolvers;

backend/resolvers/jobAd.js

@@ -1,7 +1,28 @@
-const jobAdsData = require('../data-sources/job-ads.json');
+const {
+  getAllJobAds,
+  getJobAdById,
+} = require('../services/jobAds');
+
+const { getCompanyById } = require('../services/companies');
 
 const resolver = {
-  jobAd: () => 'TODO',
+  Query: {
+    jobAds: () => getAllJobAds(),
+
+    jobAd: (_, params, req, advancedDetails) => {
+      const { id } = params;
+      return getJobAdById(id);
+    },
+  },
+
+  JobAd: {
+    id:                 (jobAd) => jobAd.id,
+    title:              (jobAd) => jobAd.title,
+    description:        (jobAd) => jobAd.description,
+    forCompany:         (jobAd) => getCompanyById(jobAd.forCompany),
+    requiredProfession: (jobAd) => jobAd.requiredProfession,
+    remainingVacancies: (jobAd) => jobAd.remainingVacancies,
+  },
 };
 
 module.exports = resolver;

backend/resolvers/ping.js

@@ -1,5 +1,7 @@
 const resolver = {
-  ping: () => 'pong',
+  Query: {
+    ping: () => 'pong',
+  },
 };
 
 module.exports = resolver;

backend/resolvers/scalars.js

@@ -1,24 +1,16 @@
 /**
- * @see: https://graphql.org/graphql-js/type/#graphqlschema
+ * @see: https://github.com/Urigo/graphql-scalars
  */
-const { GraphQLScalarType } = require('graphql');
+const {
+  EmailAddress,
+  URL,
+  NonNegativeInt,
+} = require('graphql-scalars');
 
 const resolver = {
-  Email: new GraphQLScalarType({
-    name: 'Email',
-    description: 'An email address',
-
-    serialize: (value) => value,
-
-    parseValue: (value) => {
-      const isValid = value.match(/[a-zA-Z0-9._]@[a-z][.]com/g);
-      if (!isValid) throw new Error('Invalid email format');
-
-      return value;
-    },
-
-    parseLiteral: (ast) => ast.value,
-  }),
+  EmailAddress,
+  URL,
+  NonNegativeInt,
 };
 
 module.exports = resolver;

backend/schema.graphql

@@ -1,6 +1,6 @@
-scalar Email
+scalar EmailAddress
 scalar URL
-scalar PositiveInt
+scalar NonNegativeInt
 
 enum Profession {
   FRONTEND
@@ -14,35 +14,47 @@ enum Profession {
 type Candidate {
   id: ID!
   name: String!
-  email: Email!
+  email: EmailAddress!
   profession: Profession!
   photo: URL!
-  following: [ID!]!
+  following: [Candidate!]!
 }
 
 type Company {
   id: ID!
   name: String!
   photo: URL!
-  openJobAds: [ID!]!
+  openJobAds: [JobAd!]!
 }
 
 type JobAd {
   id: ID!
   title: String!
   description: String
-  forCompany: ID!
+  forCompany: Company!
   requiredProfession: Profession!
-  remainingVacancies: PositiveInt
+  remainingVacancies: NonNegativeInt!
 }
 
 type Query {
   """Returns an incredible expected response"""
   ping: String!
 
+  """Get all candidates"""
+  candidates: [Candidate!]!
+
   """Get a candidate by either `id` or `email`"""
-  candidate(id: ID, email: Email): Candidate
+  candidate(id: ID, email: EmailAddress): Candidate
+
+  """Get all companies"""
+  companies: [Company!]!
+
+  """Get a specific company"""
+  company(id: ID!): Company
+
+  """Get all job ads"""
+  jobAds: [JobAd!]!
 
-  # TODO: company query
-  # TODO: jobAd query
+  """Get a specific job ad"""
+  jobAd(id: ID!): JobAd
 }

backend/server.js

@@ -1,14 +1,18 @@
 const fs = require('fs');
 const express = require('express');
 const app = express();
-const { graphql, buildSchema } = require('graphql');
+const { makeExecutableSchema } = require('graphql-tools');
 const graphqlHttp = require('express-graphql');
 
 const PORT = 3000;
 const graphqlTypes = fs.readFileSync('./schema.graphql', 'utf8');
-const graphqlSchema = buildSchema(graphqlTypes);
 const resolvers = require('./resolvers');
 
+const graphqlSchema = makeExecutableSchema({
+  typeDefs: graphqlTypes,
+  resolvers,
+});
+
 app.get('/ping', (req, res) => {
   return res.status(200).json({ message: 'pong' });
 });
@@ -22,3 +26,5 @@ app.use('/graphql', graphqlHttp({
 app.listen(PORT, () => {
   console.log(`Server ready at http://localhost:${PORT}/graphql 🚀`);
 });
+
+module.exports = app;

backend/services/candidates.js

@@ -0,0 +1,36 @@
+const candidatesData = require('../data-sources/candidates.json');
+
+const getAllCandidates = () => {
+  const candidates = Object.keys(candidatesData).map(key => {
+    const candidate = candidatesData[key];
+
+    return {
+      id: key,
+      ...candidate,
+    };
+  });
+
+  return candidates;
+};
+
+const getCandidateById = (id) => {
+  const candidate = candidatesData[id];
+  if (!candidate) return null;
+
+  candidate.id = id;
+  return candidate;
+};
+
+const getCandidateByEmail = (email) => {
+  const candidates = getAllCandidates();
+
+  return candidates.find(
+    candidate => candidate.email === email,
+  );
+};
+
+module.exports = {
+  getAllCandidates,
+  getCandidateById,
+  getCandidateByEmail,
+};

backend/services/companies.js

@@ -0,0 +1,16 @@
+const companiesData = require('../data-sources/companies.json');
+
+const getAllCompanies = () => {
+  return companiesData;
+};
+
+const getCompanyById = (id) => {
+  return companiesData.find(
+    company => company.id == id,
+  );
+};
+
+module.exports = {
+  getAllCompanies,
+  getCompanyById,
+};

backend/services/jobAds.js

@@ -0,0 +1,27 @@
+const jobAdsData = require('../data-sources/job-ads.json');
+
+const getAllJobAds = () => {
+  const jobAds = Object.keys(jobAdsData).map(key => {
+    const jobAd = jobAdsData[key];
+
+    return {
+      id: key,
+      ...jobAd,
+    };
+  });
+
+  return jobAds;
+};
+
+const getJobAdById = (id) => {
+  const jobAd = jobAdsData[id];
+  if (!jobAd) return null;
+
+  jobAd.id = id;
+  return jobAd;
+};
+
+module.exports = {
+  getAllJobAds,
+  getJobAdById,
+};