From d020fa8af48307983360bc66100df985fc5b16de Mon Sep 17 00:00:00 2001
From: Mikayla Dobson <93477693+innocuous-symmetry@users.noreply.github.com>
Date: Tue, 27 Sep 2022 14:04:56 -0500
Subject: [PATCH] implemented region route in api

---
 models/RegionsModel.js     | 39 ++++++++++++++++++++++++++++++++++++++
 routes/API.js              |  2 ++
 routes/regions.js          | 38 +++++++++++++++++++++++++++++++++++++
 services/RegionsService.js | 35 ++++++++++++++++++++++++++++++++++
 swagger.yml                | 30 +++++++++++++++++++++++++++++
 5 files changed, 144 insertions(+)
 create mode 100644 models/RegionsModel.js
 create mode 100644 routes/regions.js
 create mode 100644 services/RegionsService.js

diff --git a/models/RegionsModel.js b/models/RegionsModel.js
new file mode 100644
index 0000000..e2b0c9e
--- /dev/null
+++ b/models/RegionsModel.js
@@ -0,0 +1,39 @@
+const db = require('../db/Pool');
+const pgp = require('pg-promise')({ capSQL: true });
+
+module.exports = class RegionsModel {
+    async selectAll() {
+        try {
+            const statement = "SELECT * FROM region";
+            const result = await db.query(statement);
+            if (result.rows.length) return result.rows;
+            return null;
+        } catch(e) {
+            throw new Error(e);
+        }
+    }
+
+    async getOne(regionid) {
+        try {
+            const statement = "SELECT * FROM region WHERE id = $1";
+            const values = [regionid]
+            const result = await db.query(statement, values);
+            if (result.rows.length) return result.rows;
+            return null;
+        } catch(e) {
+            throw new Error(e);
+        }
+    }
+
+    // protected
+    async create(data) {
+        try {
+            const statement = pgp.helpers.insert(data, null, 'region') + 'RETURNING *';
+            const result = await db.query(statement);
+            if (result.rows.length) return result.rows;
+            return null;
+        } catch(e) {
+            throw new Error(e);
+        }
+    }
+}
\ No newline at end of file
diff --git a/routes/API.js b/routes/API.js
index f4cd649..8a788cf 100644
--- a/routes/API.js
+++ b/routes/API.js
@@ -1,6 +1,7 @@
 const authRouter = require('./auth');
 const userRouter = require('./user');
 const productRouter = require('./product');
+const regionsRouter = require('./regions');
 const orderRouter = require('./orders');
 const cartRouter = require('./cart');
 
@@ -8,6 +9,7 @@ module.exports = (app, passport) => {
     authRouter(app, passport);
     userRouter(app);
     productRouter(app);
+    regionsRouter(app);
     orderRouter(app);
     cartRouter(app);
 }
\ No newline at end of file
diff --git a/routes/regions.js b/routes/regions.js
new file mode 100644
index 0000000..e0e555a
--- /dev/null
+++ b/routes/regions.js
@@ -0,0 +1,38 @@
+const router = require('express').Router();
+const RegionsService = require('../services/RegionsService');
+const RegionsInstance = new RegionsService();
+
+module.exports = (app) => {
+    app.use('/api/regions', router);
+
+    router.get('/', async (req, res, next) => {
+        try {
+            const response = await RegionsInstance.getAll();
+            res.status(200).send(response);
+        } catch(e) {
+            next(e);
+        }
+    })
+
+    router.get('/:regionid', async (req, res, next) => {
+        const { regionid } = req.params;
+
+        try {
+            const response = await RegionsInstance.getOne(regionid);
+            res.status(200).send(response);
+        } catch(e) {
+            next(e);
+        }
+    })
+
+    router.post('/', async (req, res, next) => {
+        const data = req.body;
+
+        try {
+            const response = await RegionsInstance.create(data);
+            res.status(200).send(response);
+        } catch(e) {
+            next(e);
+        }
+    })
+}
\ No newline at end of file
diff --git a/services/RegionsService.js b/services/RegionsService.js
new file mode 100644
index 0000000..4778c81
--- /dev/null
+++ b/services/RegionsService.js
@@ -0,0 +1,35 @@
+const createError = require('http-errors');
+const RegionsModel = require('../models/RegionsModel');
+const RegionInstance = new RegionsModel();
+
+module.exports = class RegionsService {
+    async getAll() {
+        try {
+            const result = await RegionInstance.selectAll();
+            if (!result) throw createError(404, "No region entries found.");
+            return result;
+        } catch(e) {
+            throw new Error(e);
+        }
+    }
+    
+    async getOne(id) {
+        try {
+            const result = await RegionInstance.getOne(id);
+            if (!result) throw createError(404, "No region entries found.");
+            return result;
+        } catch(e) {
+            throw new Error(e);
+        }
+    }
+
+    async create(data) {
+        try {
+            const result = await RegionInstance(data);
+            if (!result) throw createError(401, "Unauthorized action");
+            return result;
+        } catch(e) {
+            throw new Error(e);
+        }
+    }
+}
\ No newline at end of file
diff --git a/swagger.yml b/swagger.yml
index 8bff88d..46d8001 100644
--- a/swagger.yml
+++ b/swagger.yml
@@ -376,6 +376,36 @@ paths:
           description: "Access forbidden"
           schema:
             type: object
+
+  /regions:
+    get:
+      summary: "Get all product regions"
+      tags:
+        - region
+      responses:
+        200:
+          description: "Got region listing successfully"
+          schema:
+            type: object
+        404:
+          description: "Requested resource was not found"
+          schema:
+            type: object
+  /regions/{regionid}:
+    get:
+      summary: "Get one region by its ID"
+      tags:
+        - region
+      responses:
+        200:
+          description: "Got region listing successfully"
+          schema:
+            type: object
+        404:
+          description: "Requested resource was not found"
+          schema:
+            type: object
+
   /user:
     get:
       summary: "Get all users"