Init: random election project

Author: Gyeongjun Paik

go.mod

@@ -0,0 +1 @@
+module random_election

main.go

@@ -0,0 +1,94 @@
+package main
+
+import (
+	crand "crypto/rand"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"math/rand"
+	"os"
+	"strings"
+	"time"
+)
+
+type Person struct {
+	Name  string `json:"name"`
+	Email string `json:"email"`
+}
+
+func obfuscateEmail(email string) string {
+	parts := strings.Split(email, "@")
+	if len(parts) != 2 {
+		return email
+	}
+
+	local := parts[0]
+	if len(local) <= 2 {
+		return email
+	}
+
+	return local[:2] + strings.Repeat("*", len(local)-2) + "@" + parts[1]
+}
+
+func obfuscateName(name string) string {
+	runes := []rune(name)
+	length := len(runes)
+	if length <= 2 {
+		return name
+	}
+
+	return string(runes[0]) + strings.Repeat("*", length-2) + string(runes[length-1])
+}
+
+func randomFileName() string {
+	bytes := make([]byte, 16)
+	if _, err := crand.Read(bytes); err != nil {
+		log.Fatal(err)
+	}
+	return hex.EncodeToString(bytes) + ".txt"
+}
+
+func main() {
+	// Read the input.json file
+	jsonFile, err := ioutil.ReadFile("input.json")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// Parse the JSON data
+	var people []Person
+	err = json.Unmarshal(jsonFile, &people)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// Set the random seed
+	rand.Seed(time.Now().UnixNano())
+
+	// Randomly select a person
+	if len(people) > 0 {
+		randomIndex := rand.Intn(len(people))
+		randomName := obfuscateName(people[randomIndex].Name)
+		randomEmail := obfuscateEmail(people[randomIndex].Email)
+		fmt.Println("Randomly selected name and email:", randomName, randomEmail)
+
+		// Save the actual name and email to a file
+		fileName := randomFileName()
+		file, err := os.Create(fileName)
+		if err != nil {
+			log.Fatal(err)
+		}
+		defer file.Close()
+
+		_, err = file.WriteString("Name: " + people[randomIndex].Name + "\nEmail: " + people[randomIndex].Email + "\n")
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		fmt.Println("Actual name and email saved to:", fileName)
+	} else {
+		fmt.Println("No people data found.")
+	}
+}