From d7eef9649d9291ba90546d22089e75db5204f28e Mon Sep 17 00:00:00 2001
From: Hiren Chauhan <hiren.maheshwari366@gmail.com>
Date: Mon, 17 Jan 2022 14:23:36 +0530
Subject: [PATCH 1/2] feat: add authors resource

---
 src/app.js                                   |  8 ++--
 src/components/authors/authors.controller.js | 48 ++++++++++++++++++++
 src/components/authors/authors.dao.js        | 37 +++++++++++++++
 src/components/authors/authors.routes.js     | 16 +++++++
 src/components/authors/authors.service.js    | 17 +++++++
 5 files changed, 121 insertions(+), 5 deletions(-)
 create mode 100644 src/components/authors/authors.controller.js
 create mode 100644 src/components/authors/authors.dao.js
 create mode 100644 src/components/authors/authors.routes.js
 create mode 100644 src/components/authors/authors.service.js

diff --git a/src/app.js b/src/app.js
index b4273f3..c020c4d 100644
--- a/src/app.js
+++ b/src/app.js
@@ -5,7 +5,7 @@ import bodyParser from 'body-parser';
 import logger from './utils/logger';
 
 // import routes here
-
+import authorsRoutes from './components/authors/authors.routes';
 
 // init express app
 const app = express();
@@ -27,10 +27,8 @@ app.get('/', async (req, res) => {
 });
 
 // Add your routes here
-/**
- * for example,
- * app.use('/api/v1/authors', authorsRoutes);
- */
+app.use('/api/v1/authors', authorsRoutes);
+
 
 // routes end here
 
diff --git a/src/components/authors/authors.controller.js b/src/components/authors/authors.controller.js
new file mode 100644
index 0000000..83994dd
--- /dev/null
+++ b/src/components/authors/authors.controller.js
@@ -0,0 +1,48 @@
+import { Prisma } from '@prisma/client';
+import authorsService from './authors.service';
+
+class AuthorsController {
+  async getAuthors(req, res, next) {
+    try {
+      const authors = await authorsService.findAll();
+      return res.status(200).json(authors);
+    } catch (error) {
+      console.error(error);
+      return next(error);
+    }
+  }
+
+  async createAuthor(req, res, next) {
+    try {
+      const createdAuthor = await authorsService.create(req.body);
+      return res.status(201).json(createdAuthor);
+    } catch (error) {
+      // Prisma client errors
+      // read more about errors https://www.prisma.io/docs/reference/api-reference/error-reference
+      if (error instanceof Prisma.PrismaClientKnownRequestError) {
+        // The .code property can be accessed in a type-safe manner
+        if (error.code === 'P2002') {
+          return res.status(400).json({
+            error: true,
+            message: 'Author already exists with the same email.',
+          });
+        }
+      }
+      return next(error);
+    }
+  }
+
+  async getAuthor(req, res, next) {
+    try {
+      const authorId = parseInt(req.params.authorId, 10);
+      const author = await authorsService.findOne(authorId);
+
+      return res.status(200).json(author);
+    } catch (error) {
+      console.error(error.message);
+      return next(error);
+    }
+  }
+}
+
+export default new AuthorsController();
diff --git a/src/components/authors/authors.dao.js b/src/components/authors/authors.dao.js
new file mode 100644
index 0000000..da22c6f
--- /dev/null
+++ b/src/components/authors/authors.dao.js
@@ -0,0 +1,37 @@
+import { prisma } from '../../config/prismaClient';
+
+class AuthorDAO {
+  create(data) {
+    return prisma.author.create({ data });
+  }
+
+  findAll() {
+    return prisma.author.findMany();
+  }
+
+  findOne(id) {
+    return prisma.author.findUnique({
+      where: {
+        id,
+      },
+    });
+  }
+
+  update(id, updatedData) {
+    return prisma.author.update({
+      where: { id },
+      data: updatedData,
+    });
+  }
+
+  getBooksByAuthor(id) {
+    return prisma.author.findUnique({
+      where: { id },
+      select: {
+        books: true,
+      },
+    });
+  }
+}
+
+export default new AuthorDAO();
diff --git a/src/components/authors/authors.routes.js b/src/components/authors/authors.routes.js
new file mode 100644
index 0000000..9512e13
--- /dev/null
+++ b/src/components/authors/authors.routes.js
@@ -0,0 +1,16 @@
+import express from 'express';
+
+import AuthorsController from './authors.controller';
+
+const router = express.Router();
+
+// get all authors
+router.get('/', AuthorsController.getAuthors);
+
+// create author
+router.post('/', AuthorsController.createAuthor);
+
+// get single author
+router.get('/:authorId', AuthorsController.getAuthor);
+
+export default router;
diff --git a/src/components/authors/authors.service.js b/src/components/authors/authors.service.js
new file mode 100644
index 0000000..5d2c6ca
--- /dev/null
+++ b/src/components/authors/authors.service.js
@@ -0,0 +1,17 @@
+import authorDAO from './authors.dao';
+
+class AuthorsService {
+  findAll() {
+    return authorDAO.findAll();
+  }
+
+  findOne(id) {
+    return authorDAO.findOne(id);
+  }
+
+  async create(data) {
+    return authorDAO.create(data);
+  }
+}
+
+export default new AuthorsService();

From 12eb9074da007972eb6f91dd5da571308a6ebc2d Mon Sep 17 00:00:00 2001
From: Hiren Chauhan <hiren.maheshwari366@gmail.com>
Date: Thu, 17 Mar 2022 22:13:50 +0530
Subject: [PATCH 2/2] feat: add books resource

---
 src/components/books/books.controller.js |  0
 src/components/books/books.dao.js        | 34 ++++++++++++++++++++++++
 src/components/books/books.routes.js     |  0
 src/components/books/books.service.js    |  0
 4 files changed, 34 insertions(+)
 create mode 100644 src/components/books/books.controller.js
 create mode 100644 src/components/books/books.dao.js
 create mode 100644 src/components/books/books.routes.js
 create mode 100644 src/components/books/books.service.js

diff --git a/src/components/books/books.controller.js b/src/components/books/books.controller.js
new file mode 100644
index 0000000..e69de29
diff --git a/src/components/books/books.dao.js b/src/components/books/books.dao.js
new file mode 100644
index 0000000..1ff9f95
--- /dev/null
+++ b/src/components/books/books.dao.js
@@ -0,0 +1,34 @@
+import { prisma } from '../../config/prismaClient';
+
+class BooksDAO {
+  create(data) {
+    return prisma.book.create({ data });
+  }
+
+  findAll() {
+    return prisma.book.findMany();
+  }
+
+  findOne(id) {
+    return prisma.book.findUnique({
+      where: {
+        id,
+      },
+    });
+  }
+
+  update(id, updatedData) {
+    return prisma.book.update({
+      where: { id },
+      data: updatedData,
+    });
+  }
+
+  getBooksByAuthor(authorId) {
+    return prisma.book.findMany({
+      where: { authorId },
+    });
+  }
+}
+
+export const authorDAO = new BooksDAO();
diff --git a/src/components/books/books.routes.js b/src/components/books/books.routes.js
new file mode 100644
index 0000000..e69de29
diff --git a/src/components/books/books.service.js b/src/components/books/books.service.js
new file mode 100644
index 0000000..e69de29