Implement send emails question

cmd/secret_santa/main.go

@@ -1,15 +1,21 @@
 package main
 
 import (
+	"flag"
 	"fmt"
-	"github.com/joho/godotenv"
 	"log"
 	"secret-santa/internal/config"
 	"secret-santa/internal/email"
 	"secret-santa/internal/processor"
+
+	"github.com/joho/godotenv"
 )
 
+var yFlag = flag.Bool("y", false, "Send mails directly")
+
 func main() {
+	flag.Parse()
+
 	err := godotenv.Load(".env")
 	if err != nil {
 		log.Fatal("Error loading .env file")
@@ -24,6 +30,6 @@ func main() {
 		return
 	}
 
-	processor := processor.Processor{Config: conf}
+	processor := processor.Processor{Config: conf, AskBeforeSending: !*yFlag}
 	processor.Process()
 }

internal/processor/processor.go

@@ -4,10 +4,12 @@ import (
 	"fmt"
 	"math/rand"
 	"secret-santa/internal/config"
+	"strings"
 )
 
 type Processor struct {
-	Config *config.Config
+	Config           *config.Config
+	AskBeforeSending bool
 }
 
 var userMapping UserMap = make(map[config.User]config.User)
@@ -22,6 +24,15 @@ func (processor Processor) Process() {
 		}
 	}
 	fmt.Printf("Succed after %v tries\n", i)
+	if processor.AskBeforeSending {
+		fmt.Printf("Summary:\n\n%v\n", userMapping.String())
+		fmt.Println("Send mails? (y/n)")
+		var input string
+		fmt.Scanln(&input)
+		if strings.ToLower(input) != "y" {
+			return
+		}
+	}
 	fmt.Println("Sending mails...")
 	userMapping.sendMails(processor.Config.EmailConfig, processor.Config.SummaryEmail)
 }

internal/processor/user_map.go

@@ -8,10 +8,36 @@ import (
 
 type UserMap map[config.User]config.User
 
+func (userMap UserMap) getLongetsName() int {
+	longestName := 0
+	for k := range userMap {
+		if len(k.Name) > longestName {
+			longestName = len(k.Name)
+		}
+	}
+	return longestName
+}
+
+func AddSpaces(s string, totalLen int) string {
+	for i := len(s); i < totalLen; i++ {
+		s += " "
+	}
+	return s
+}
+
 func (userMap UserMap) String() string {
+	maxLen := userMap.getLongetsName()*2 + 5
+	userMappingListString := ""
+	for k, v := range userMap {
+		userMappingListString += fmt.Sprintf(" %v  (%v has drawn %v)\n", AddSpaces(fmt.Sprintf(" %v => %v", k.Name, v.Name), maxLen), k.Name, v.Name)
+	}
+	return userMappingListString
+}
+
+func (userMap UserMap) StringHTML() string {
 	userMappingListString := ""
 	for k, v := range userMap {
-		userMappingListString += fmt.Sprintf("<p><b>%v => %v</b>   <i>(%v hat %v gezogen)</i></p>\n", k.Name, v.Name, k.Name, v.Name)
+		userMappingListString += fmt.Sprintf("<p><b>%v => %v</b>   <i>(%v has drawn %v)</i></p>\n", k.Name, v.Name, k.Name, v.Name)
 	}
 	return userMappingListString
 }
@@ -47,7 +73,7 @@ func (userMap UserMap) sendSummaryMail(conf config.EmailConfig, summaryMail stri
 		Receiver: summaryMail,
 		Content: email.Content{
 			Subject: conf.Subject + " | Summary",
-			Body:    userMap.String(),
+			Body:    userMap.StringHTML(),
 		},
 	}
 	err := mail.SendMail()