structs

structs/go.mod

@@ -0,0 +1,3 @@
+module example.com/structs
+
+go 1.21.2

structs/structs.go

@@ -0,0 +1,40 @@
+package main
+
+import (
+	"fmt"
+	"example.com/structs/user"
+)
+
+func main() {
+	userFirstName := getUserData("Please enter your first name: ")
+	userLastName := getUserData("Please enter your last name: ")
+	userBirthdate := getUserData("Please enter your birthdate (MM/DD/YYYY): ")
+
+	var appUser *user.User
+
+	appUser, err := user.New(userFirstName, userLastName, userBirthdate)
+
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+
+	admin := user.NewAdmin("test@example.com", "test123")
+
+	admin.OutputUserDetails()
+	admin.ClearUserName()
+	admin.OutputUserDetails()
+
+	// ... do something awesome with that gathered data!
+
+	appUser.OutputUserDetails()
+	appUser.ClearUserName()
+	appUser.OutputUserDetails()
+}
+
+func getUserData(promptText string) string {
+	fmt.Print(promptText)
+	var value string
+	fmt.Scanln(&value)
+	return value
+}

structs/user/user.go

@@ -0,0 +1,55 @@
+package user
+
+import (
+	"errors"
+	"fmt"
+	"time"
+)
+
+type User struct {
+	firstName string
+	lastName string
+	birthdate string
+	createdAt time.Time
+}
+
+type Admin struct {
+	email string
+	password string
+	User
+}
+
+func (u User) OutputUserDetails() {
+	fmt.Println(u.firstName, u.lastName, u.birthdate)
+}
+
+func (u *User) ClearUserName() {
+	u.firstName = ""
+	u.lastName = ""
+}
+
+func NewAdmin(email, password string) Admin {
+	return Admin{
+		email: email,
+		password: password,
+		User: User{
+			firstName: "ADMIN",
+			lastName: "ADMIN",
+			birthdate: "---",
+			createdAt: time.Now(),
+		},
+	}
+}
+
+func New(firstName, lastName, birthdate string) (*User, error) {
+	if firstName == "" || lastName == "" || birthdate == "" {
+		return nil, errors.New("First name, last name, and birthdate are required")
+	}
+
+	return &User{
+		firstName: firstName,
+		lastName: lastName,
+		birthdate: birthdate,
+		createdAt: time.Now(),
+	}, nil
+}