chore: course completed

booking-app/main.go

@@ -2,14 +2,24 @@ package main
 
 import (
   "fmt"
-  "strconv"
+  "time"
+  "sync"
   "booking-app/helper"
 )
 
 const conferenceTickets int = 50
 var conferenceName = "Go Conference"
 var remainingTickets uint = 50
-var bookings = make([]map[string]string, 0)
+var bookings = make([]UserData, 0)
+
+type UserData struct {
+  firstName string
+  lastName string
+  email string
+  numberOfTickets uint
+}
+
+var wg = sync.WaitGroup{}
 
 func main() {
   greetUsers()
@@ -20,6 +30,8 @@ func main() {
 
     if isValidName && isValidEmail && isValidNumber {
       bookTicket(firstName, lastName, email, userTickets)
+      wg.Add(1)
+      go sendTicket(firstName, lastName, email, userTickets) 
 
       fmt.Printf("These are all the first names of our bookings: %v\n", buildFirstNames())
 
@@ -39,15 +51,26 @@ func main() {
       }
     }
   }
+  wg.Wait()
+}
+
+func sendTicket(firstName string, lastName string, email string, userTickets uint) {
+  time.Sleep(50 * time.Second)
+  ticket := fmt.Sprintf("%v tickets for %v %v", userTickets, firstName, lastName)
+  fmt.Println("#######")
+  fmt.Printf("Sending ticket:\n %v \nto email address %v\n", ticket, email)
+  fmt.Println("######")
+  wg.Done()
 }
 
 func bookTicket(firstName string, lastName string, email string, userTickets uint) {
   // create a map for a user
-  var userData = make(map[string]string)
-  userData["firstName"] = firstName
-  userData["lastName"] = lastName
-  userData["email"] = email
-  userData["numberOfTickets"] = strconv.FormatUint(uint64(userTickets), 10)
+  var userData = UserData {
+    firstName: firstName,
+    lastName: lastName,
+    email: email,
+    numberOfTickets: userTickets,
+  }
 
   bookings = append(bookings, userData)
 
@@ -87,7 +110,7 @@ func greetUsers() {
 func buildFirstNames() []string {
   firstNames := []string{}
   for _, userData := range bookings {
-     firstNames = append(firstNames, userData["firstName"])
+     firstNames = append(firstNames, userData.firstName)
   }
   return firstNames 
 }