J.Sorge HW2 - Express

app.js

@@ -10,11 +10,71 @@ app.use(require('body-parser').json())
 const data = {
   fruits: [],
   vegetables: []
+  //fruits: [{ "id": "14r5y6", "name": "apple", "price": "0.49" }],
+  //vegetables: [{ "id": "y7474u", "name": "cilantro", "price": "1.00" },
+  //{ "id": "8ue38u", "name": "onion", "price": "2.00" }]
 }
 
+// IE compatibility polyfill for string.prototype.includes()
+// Sunho Hong https://stackoverflow.com/a/39744409
+if (!Array.prototype.includes) {
+  Object.defineProperty(Array.prototype, "includes", {
+    enumerable: false,
+    value: function(obj) {
+        var newArr = this.filter(function(el) {
+          return el == obj;
+        });
+        return newArr.length > 0;
+      }
+  });
+}
+// IE compatibility pollyfill for string.prototype.filter
+//http://independent-software.com/extending-the-javascript-array-prototype-with-polyfills.html
+if (!Array.prototype.filter) {
+  Array.prototype.filter = function (callbackfn, /*optional*/ thisArg) {
+    var k, len, result = [];
+
+    // Method cannot be run on an array that does not exist.
+    if (this == null) {
+      throw new TypeError('this is null or not defined');
+    }
+
+    // The callback must be a function.
+    if (typeof callbackfn !== 'function') {
+      throw new TypeError();
+    }
+
+    // Loop through array.
+    len = this.length;
+    k = 0;
+    while (k < len) {
+      if (k in this) {
+        // For each element, if callback returns truthy, add it to
+        // result array.
+        if (callbackfn.call(thisArg, this[k], k, this)) {
+          result.push(this[k]);
+        }
+      }
+      k = k + 1;
+    }
+    return result;
+  };
+}
+
+/* Vegetables */
 app.get('/vegetables', (req, res, next) => {
   const { vegetables } = data
-  res.json(vegetables)
+  const { name } = req.query
+  res.status(200)
+
+  // if no query, return vegetables' data
+  if (!name) {
+    res.json(vegetables)
+  } else {  // query exists
+    // Filter data for vegetable name
+    const veg = vegetables.filter( el => el.name.includes(name))
+    res.json(veg)
+  }  
 })
 
 app.get('/vegetables/:id', (req, res, next) => {
@@ -34,10 +94,122 @@ app.post('/vegetables', helpers.validate, (req, res, next) => {
   const { vegetables } = data
   const vegetable = { id: generateId(), ...req.body }
 
-  vegetables.push(vegetable)
+  vegetables.push(vegetable)                       
   res.status(201).json(vegetable)
+})                         
+
+app.delete('/vegetables/:id', ( req, res, next) => { 
+  const { vegetables } = data
+  const { id } = req.params
+
+  const veg = vegetables.filter(el => el.id.includes(id))[0]
+  if (!veg) {
+    const message = `Could not find vegetable with ID of ${id}`
+    next({ status: 404, message })
+  }
+  const vegIndex = vegetables.indexOf(veg)
+  vegetables.splice(vegIndex,1)
+  res.status(200).json(veg)
 })
 
+app.put('/vegetables/:id', helpers.validate, (req, res, next) => {
+  const { vegetables } = data
+  const { id } = req.params
+
+  const veg = vegetables.filter(el => el.id.includes(id))[0]
+  if (!veg) {
+    const message = `Could not find vegetable with ID of ${id}`
+    next({ status: 404, message })
+  }
+  const { name, price } = req.body
+  if (!name || !price) {
+    const message = `Bad request.`
+    next({ status: 400, message })
+  }
+  veg.name = name
+  veg.price = price
+  res.status(200).json(veg)
+}) 
+
+
+/* Fruits */
+app.get('/fruits', (req, res, next) => {
+  const { fruits } = data
+  const { name } = req.query
+  res.status(200)
+
+  // if no query, return fruits' data
+  if (!name) {
+    res.json(fruits)
+  } else {  // query exists
+    // Filter data for fruit name
+    const fruit = fruits.filter( el => el.name.includes(name))
+    res.json(fruit)
+  }  
+})
+
+app.get('/fruits/:id', (req, res, next) => {
+  const { fruits } = data
+  const { id } = req.params
+  const fruit = fruits.find(el => el.id === id)
+
+  if (!fruit) {
+    const message = `Could not find fruit with ID of ${id}`
+    next({ status: 404, message })
+  }
+
+  res.status(200).json(fruit)
+})
+
+app.post('/fruits', helpers.validate, (req, res, next) => {
+  const { fruits } = data
+  const { name, price } = req.body
+  if (!name || !price) {
+    const message = `Bad request.`
+    next({ status: 400, message })
+  }
+  const fruit = { id: generateId(), ...req.body }
+
+  fruits.push(fruit)                       
+  res.status(201).json(fruit)
+})                         
+
+app.delete('/fruits/:id', ( req, res, next) => { 
+  const { fruits } = data
+  const { id } = req.params
+
+  const fruit = fruits.filter(el => el.id.includes(id))[0]
+  console.log(fruit)
+  if (!fruit) {
+    const message = `Could not find a fruit with ID of ${id}`
+    next({ status: 404, message })
+  }
+  const fruitIndex = fruits.indexOf(fruit)
+  fruits.splice(fruitIndex,1)
+  res.status(200).json(fruit)
+})
+
+app.put('/fruits/:id', helpers.validate, (req, res, next) => {
+  const { fruits } = data
+  const { id } = req.params
+
+  const fruit = fruits.filter(el => el.id.includes(id))[0]
+  if (!fruit) {
+    const message = `Could not find fruit with ID of ${id}`
+    next({ status: 404, message })
+  }
+  const { name, price } = req.body
+  if (!name || !price) {
+    const message = `Bad request.`
+    next({ status: 400, message })
+  }
+  fruit.name = name
+  fruit.price = price
+  res.status(200).json(fruit)
+})   
+
+
+// Default responses
 app.use((req, res, next) => {
   next({
     status: 404,
@@ -51,4 +223,4 @@ app.use((err, req, res, next) => {
 })
 
 const listener = () => console.log(`Listening on Port ${PORT}!`)
-app.listen(PORT, listener)
+app.listen(PORT, listener)