Headstorm Interview Challenges

README.md

@@ -5,5 +5,10 @@ Welcome to the Headstorm interview challenge!  This repository is designed for c
 ### Challenges
 These are domain specific problems that can be submitted individually.  You can choose from backend, frontend, databases, or data-science.  You can submit a PR for one, many, or all the challenges.
 
+*** SERVER RUNS ON PORT 3000 ***
+Frontend Challenge  -> Contact page available at /contact.html 
+Backend Challenge   -> requires a json input with key "numbers" and value being a list of integers 
+Database Challenge  -> In order to start migration function hit endpoint /migrate with GET
+
 ### Interviews
 These are language specific interview questions and you can choose the language in which you implement your solution.

backend_challenge.txt

@@ -0,0 +1,29 @@
+Relational Data Model
+
+
+
+
+Customers 
++--------------+--------------+--------------+--------------+-------------+------------+
+|RecordID      |Name          |Cell          |Work          |Email        |Address     | 
++--------------+--------------+--------------+--------------+-------------+------------+
+        ^
+        |
+        |
+        |
+Options |      
++--------------+--------------------+---------------------+
+|RecordID      |Basic Widget Order  |Advanced Widget Order|   
++--------------+--------------------+---------------------+
+        ^
+        |
+        |
+        |
+Plans   |     
++--------------+--------------------+
+|RecordID      |Protection Plan     |
++--------------+--------------------+
+
+INSERT INTO Customers(RecordID, Name, Cell, Work, Email, Address) Values(v1, v2, v3, v4, v5, v6)
+INSERT INTO Options(RecordID, Basic Widget Order, Advanced Widget Order) Values(v1, v2, v3)
+INSERT INTO Plans(RecordID, Protection Plan) Values(v1, v2)

customers.json

@@ -0,0 +1,59 @@
+{
+    "customers" : [
+        {
+            "RecordID" : 1,
+            "Name" : "Joe Smith",
+            "CellPhone" : "405.867.5309",
+            "WorkPhone" : "405.867.5309",
+            "Email" : "[email protected]",
+            "Address" : "123 Vic Way, Dallas TX 75001",
+            "BasicWidgetOrder" : 	37,
+            "AdvancedWidgetOrder" : 12,
+            "ProtectionPlan" : "True"
+        },
+        {
+            "RecordID" : 2,
+            "Name" : "Luke Skywalker",
+            "CellPhone" : "405.867.5309",
+            "WorkPhone" : "405.867.5309",
+            "Email" : "[email protected]",
+            "Address" : "123 Vic Way, Dallas TX 75001",
+            "BasicWidgetOrder" : 	37,
+            "AdvancedWidgetOrder" : 12,
+            "ProtectionPlan" : "False"
+        },
+        {
+            "RecordID" : 3,
+            "Name" : "Darth Vader",
+            "CellPhone" : "405.867.5309",
+            "WorkPhone" : "405.867.5309",
+            "Email" : "[email protected]",
+            "Address" : "Death Star, Space",
+            "BasicWidgetOrder" : 	37,
+            "AdvancedWidgetOrder" : 12,
+            "ProtectionPlan" : "False"
+        },
+        {
+            "RecordID" : 4,
+            "Name" : "Han Solo",
+            "CellPhone" : "405.867.5309",
+            "WorkPhone" : "405.867.5309",
+            "Email" : "[email protected]",
+            "Address" : "123 test Way, Dallas TX 75001",
+            "BasicWidgetOrder" : 	37,
+            "AdvancedWidgetOrder" : 12,
+            "ProtectionPlan" : "False"
+        },
+        {
+            "RecordID" : 5,
+            "Name" : "Chewbacca",
+            "CellPhone" : "405.867.5309",
+            "WorkPhone" : "405.867.5309",
+            "Email" : "[email protected]",
+            "Address" : "123 fake Way, Dallas TX 75001",
+            "BasicWidgetOrder" : 	37,
+            "AdvancedWidgetOrder" : 12,
+            "ProtectionPlan" : "False"
+        }
+    ]
+}

main.go

@@ -0,0 +1,163 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"sort"
+	"strings"
+
+	"github.com/gofiber/fiber/v2"
+)
+
+//DATABASE CHALLENGE STRUCTS
+
+type Customers struct {
+	Customers []Customer `json:"customers"`
+}
+
+type Customer struct {
+	RecordID            int    `json:"RecordID"`
+	Name                string `json:"Name"`
+	Cell                string `json:"CellPhone"`
+	Work                string `json:"WorkPhone"`
+	Email               string `json:"Email"`
+	Address             string `json:"Address"`
+	BasicWidgetOrder    int    `json:"BasicWidgetOrder"`
+	AdvancedWidgetOrder int    `json:"AdvancedWidgetOrder"`
+	ProtectionPlan      string `json:"ProtectionPlan"`
+}
+
+//BACKEND CHALLENGE STRUCTS
+
+type ErrorResponse struct {
+	Status     string `json:"status"`
+	StatusCode string `json:"status_code"`
+	Message    string `json:"message"`
+}
+
+type SuccessResponse struct {
+	Status     string `json:"status"`
+	StatusCode string `json:"status_code"`
+	Data       []int  `json:"data"`
+}
+
+type NumberList struct {
+	Numbers []int `json:"numbers"`
+}
+
+var n NumberList
+
+func main() {
+	app := fiber.New()
+
+	//Create struct from list of numbers sent through POST
+	app.Post("/data", func(c *fiber.Ctx) error {
+		c.Accepts("application/json")
+
+		//error if not sending a list of ints
+		if err := c.BodyParser(&n); err != nil {
+			e := ErrorResponse{
+				Status:     "ERROR",
+				StatusCode: "INCORRECT-TYPE",
+				Message:    "Numbers can only accept a list of integers",
+			}
+			fmt.Println(err)
+			return c.JSON(e)
+		}
+		//error if list is less thatn 500
+		if len(n.Numbers) < 500 {
+			e := ErrorResponse{
+				Status:     "ERROR",
+				StatusCode: "INCORRECT-SIZE",
+				Message:    "The list of numbers sent is under the required amount of 500.",
+			}
+			return c.JSON(e)
+		}
+		//error if list is greater than 500
+		if len(n.Numbers) > 500 {
+			e := ErrorResponse{
+				Status:     "ERROR",
+				StatusCode: "INCORRECT-SIZE",
+				Message:    "The list of numbers sent is over the required amount of 500.",
+			}
+			return c.JSON(e)
+		}
+
+		success := SuccessResponse{
+			Status:     "success",
+			StatusCode: "RECIEVED",
+			Data:       n.Numbers,
+		}
+		return c.JSON(success)
+	})
+
+	//GET list of numbers from previous post request
+	app.Get("/data", func(c *fiber.Ctx) error {
+		//error if array of 500 ints does not exist or is not the correct size
+		if len(n.Numbers) != 500 {
+			e := ErrorResponse{
+				Status:     "ERROR",
+				StatusCode: "INCORRECT-SIZE",
+				Message:    "The list of numbers does not meet the required size amount of 500. Please send a new list.",
+			}
+			return c.JSON(e)
+		}
+		//sort array from previous request
+		sort.Slice(n.Numbers, func(i, j int) bool {
+			return n.Numbers[i] < n.Numbers[j]
+		})
+
+		success := SuccessResponse{
+			Status:     "success",
+			StatusCode: "SORTED",
+			Data:       n.Numbers,
+		}
+		return c.JSON(success) // => ✋ register
+	})
+
+	app.Get("/migrate", func(c *fiber.Ctx) error {
+		//Migrate data
+		fmt.Println("Migrating Customers")
+		dbMigrate()
+		return c.JSON("Migrating Customers...")
+	})
+
+	//serve all static public files
+	app.Static("/", "./public")
+	//listen on port 3000
+	app.Listen(":3000")
+
+}
+
+func dbMigrate() {
+	var customers Customers
+	//open json file
+	jsonFile, err := os.Open("customers.json")
+	if err != nil {
+		fmt.Println(err)
+	}
+	fmt.Println("Successfully Opened customers.json")
+	//defer close to parse later
+	defer jsonFile.Close()
+
+	byteVal, _ := ioutil.ReadAll(jsonFile)
+	json.Unmarshal(byteVal, &customers)
+
+	for _, c := range customers.Customers {
+		fmt.Printf("*** MIGRATION FOR CUSTOMER# %v ***\n", c.RecordID)
+		//insertion for customer table//
+		fmt.Printf("INSERT INTO customers (record_id, name, cell_phone, work_phone, email, address) VALUES (%v, %v, %v, %v, %v, %v)\n", c.RecordID, c.Name, c.Cell, c.Work, c.Email, c.Address)
+		//insertion for options table//
+		fmt.Printf("INSERT INTO options (record_id, basic_widget_order, advanced_widget_order) VALUES (%v, %v, %v)\n", c.RecordID, c.BasicWidgetOrder, c.AdvancedWidgetOrder)
+		//convert boolean protection plan value to int
+		prot_plan := 0
+		if strings.ToLower(c.ProtectionPlan) == "true" {
+			prot_plan = 1
+		}
+		//insertion for plans table//
+		fmt.Printf("INSERT INTO plans (record_id, protection_plan) VALUES (%v, %v)\n", c.RecordID, prot_plan)
+		fmt.Printf("\n")
+	}
+}

public/contact.html

@@ -0,0 +1,109 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <link rel="shortcut icon" href="https://headstorm.com/wp-content/uploads/2020/09/Headstorm_bolt_512-150x150.png">
+    <title>Headstorm</title>
+    <!-- Bootstrap -->
+    <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
+    <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM" crossorigin="anonymous"></script>
+    <!-- Google RECAPTCHA -->
+    <script src="https://www.google.com/recaptcha/api.js?render=6LeIxAcTAAAAAGG-vFI1TnRWxMZNFuojJ4WifJWe"></script>
+    <!-- jQuery -->
+    <script src="https://code.jquery.com/jquery-3.6.0.slim.min.js" integrity="sha256-u7e5khyithlIdTpu22PHhENmPcRdFiHRjhAuHcs05RI=" crossorigin="anonymous"></script>
+    <!-- Custom JS -->
+    <script src="js/main.js"></script>
+ <style>
+     body,html {
+         background-color: #f3f3f3;
+         height: 100%;
+     }
+     .card {
+         margin: auto;
+         margin-top: 50px;
+         width: 60%;
+         height: auto;
+     }
+     #message {
+         height: 200px;
+         max-height: 200px;
+         margin-top: 20px;
+         margin-bottom: 20px;
+     }
+     #submit {
+         margin-top: 20px
+     }
+     @media only screen and (max-width: 900px) {
+        .card {
+         width: 90%;
+     }
+    }
+
+ </style>
+</head>
+<body>
+    <nav class="navbar navbar-dark bg-dark">
+        <div class="container-fluid">
+          <a class="navbar-brand" href="#">
+            <img src="https://headstorm.com/wp-content/uploads/2020/09/Headstorm_bolt_512-150x150.png" alt="" width="30" height="30" class="d-inline-block align-text-top">
+            Headstorm
+          </a>
+        </div>
+      </nav>
+    <div class="card">
+        <div class="card-body">
+            <h5 class="card-title">Contact Us</h5>
+            <form onsubmit="event.preventDefault(); $.fn.validate(this);">
+                <div class="row">
+                    <div class="col-6">
+                        <label for="firstname" class="form-label">First Name</label>
+                        <input type="text" class="form-control" id="firstname" required>
+                      </div>
+                      <div class="col-6">
+                        <label for="lastname" class="form-label">Last Name</label>
+                        <input type="text" class="form-control" id="lastname" required>
+                      </div>
+                </div>
+                <div class="form-text"></div>
+                <div class="row">
+                    <div class="col-6">
+                        <label for="email" class="form-label">Email</label>
+                        <input type="email" class="form-control" id="email" aria-describedby="emailHelp" required>
+
+                      </div>
+                      <div class="col-6">
+                        <label for="phone" class="form-label">Phone</label>
+                        <input type="text" class="form-control" id="phone" required>
+                      </div>
+                      <div id="formHelp" class="form-text">We'll never share your contact information with anyone else.</div>
+                </div>
+                <div class="row">
+                    <div class="col">
+                        <div class="form-floating">
+                            <textarea class="form-control" placeholder="Leave a message here" id="message" required></textarea>
+                            <label for="message">Message</label>
+                          </div>
+                      </div>
+                </div>
+
+                  <div class="g-recaptcha" data-callback="checkToken" data-sitekey="6LeIxAcTAAAAAJcZVRqyHh71UMIEGNQ_MXjiZKhI"></div>
+                  <button disabled id="submit" class="btn btn-primary">Submit</button>
+              </form>
+        </div>
+      </div>
+
+
+      <script type="text/javascript">
+        var submission = {}
+        function checkToken(token) {
+            console.log(token);
+            if(token) {
+              submission["token"] = token;
+              document.getElementById('submit').disabled = false;
+            }
+        }
+      </script>
+</body>
+</html>