Part3

.gitignore

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+.vscode
+part3/practice-app/node_modules
+part3/phonebook-backend/node_modules

part3/phonebook-backend/index.js

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+const express = require('express')
+const morgan = require('morgan')
+const app = express()
+
+morgan.token('content', function (req, res) {
+    if(req.method == 'POST')
+    {
+        return JSON.stringify(req.body)
+    }
+    else
+    {
+        return ""
+    }
+ })
+
+app.use(express.json())
+app.use(morgan(':method :url :status :res[content-length] - :response-time ms  conent- :content'))
+
+const ids = new Set([1, 2, 3, 4])
+
+let persons = [
+    { 
+      "id": 1,
+      "name": "Arto Hellas", 
+      "number": "040-123456"
+    },
+    { 
+      "id": 2,
+      "name": "Ada Lovelace", 
+      "number": "39-44-5323523"
+    },
+    { 
+      "id": 3,
+      "name": "Dan Abramov", 
+      "number": "12-43-234345"
+    },
+    { 
+      "id": 4,
+      "name": "Mary Poppendieck", 
+      "number": "39-23-6423122"
+    }
+]
+
+app.get('/', (request, response) => {
+    response.send('<h1>Hello World</h1>')
+}) 
+
+app.get('/api/persons', (request, response) => {
+    response.json(persons)
+})
+
+app.get('/info', (request, response) => {
+    const time = new Date()
+    response.send(`<p>Phonebook has info for ${persons.length} people </br> ${time}<p>`)
+})
+
+app.get('/api/persons/:id', (request, response) => {
+    const id = Number(request.params.id) 
+    const person = persons.find(person => person.id === id)
+    if (person){
+        response.json(person)
+    } else {
+        response.status(404).end()
+    }    
+})
+
+app.delete('/api/persons/:id', (request, response) => {
+    const id = Number(request.params.id)
+    persons = persons.filter(person => person.id !== id)
+
+    response.status(204).end()
+})
+
+const generateId = () => {
+    let id = Math.round( Math.random() * 1000000 )
+    while (ids.has(id))
+    {
+        id = Math.round( Math.random() * 1000000 )
+    }
+    ids.add(id)
+    return id
+}
+
+const checkDuplicate = (name) => {
+    if(persons.find(person => person.name.trim().toLowerCase() === name.trim().toLowerCase()))
+    {
+        return true
+    }
+    return false
+}
+
+app.post('/api/persons', (request, response) => {
+    const body = request.body
+
+    if(!body.name){
+        return response.status(400).json({
+            error: "missing name"
+        })
+    } else if(!body.number) {
+        return response.status(400).json({
+            error: "missing number"
+        })
+    } else if (checkDuplicate(body.name)){
+        return response.status(400).json({
+            error: "Duplicate name"
+        })
+    }
+
+    const person = {
+        id : generateId(),
+        name : body.name, 
+        number : body.number
+    }
+
+    persons = persons.concat(person) 
+
+    response.json(person)
+})
+
+const PORT = 3001
+app.listen(PORT , ()=>{
+    console.log('Server Running on port: ', PORT);
+})

part3/phonebook-backend/package.json

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+{
+  "name": "phonebook-backend",
+  "version": "1.0.0",
+  "description": "FSO part 3 project",
+  "main": "index.js",
+  "scripts": {
+    "start": "node index.js",
+    "dev": "nodemon index.js",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "Aditya Singh",
+  "license": "MIT",
+  "dependencies": {
+    "express": "^4.19.2",
+    "morgan": "^1.10.0"
+  },
+  "devDependencies": {
+    "nodemon": "^3.1.2"
+  }
+}

part3/phonebook-backend/requests/delete_contact.rest

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+DELETE http://localhost:3001/api/persons/2 HTTP/1.1

part3/phonebook-backend/requests/get_all_contacts.rest

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+GET http://localhost:3001/api/persons HTTP/1.1

part3/phonebook-backend/requests/post_contact.rest

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+POST http://localhost:3001/api/persons 
+Content-Type: application/json
+
+{
+    "name": "you",
+    "number": "12345"
+}
+
+###
+POST http://localhost:3001/api/persons 
+Content-Type: application/json
+
+{
+    "name": "name hai na bc", 
+    "number": "qwefwfwfw"
+}

part3/phonebook-backend/whale

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+docker run \
+    -u "$(id -u):$(id -g)" \
+    -v $(pwd):/work \
+    -w /work \
+    -it \
+    -p 5173:5173 \
+    -p 3001:3001 \
+    node:20.11.0 $@
+