run go fmt

config.toml

@@ -1,18 +0,0 @@
-# User Constants - Update as needed
-batch_size  = 500 # Max 500 messages per batch: https://postmarkapp.com/developer/api/templates-api#send-batch-with-templates
-test_email  = "" # Fill this in with your own email address
-
-# Handmade Cities Credentials - DON'T TOUCH
-[hmc]
-api_url       = "https://api.handmadecities.com/v1/meetups/subscribers"
-shared_secret = "Land_OF_TERminA__MAJORAS_LAIR#666!"
-city          = "Termina"
-
-# Postmark App Credentials - NO TOUCHY TOUCHY
-[postmark]
-server_token   = "37967b9a-6b1c-430e-a65f-de043de3e568"
-api_url        = "https://api.postmarkapp.com/email/batchWithTemplates"
-template_id    = 35682307
-sender_name    = "Skull Kid"
-sender_email   = "majora@handmadecities.com"
-message_stream = "termina"

main.go

@@ -7,14 +7,14 @@
 // ============================    Contributors    =========================
 // Bug & warning fixes
 //  Jacob Bell (@MysteriousJ)
-//  Asaf Gartner
+//  Asaf Gartner (@AsafGartner)
+//  Joshua Barnett (@jshbrntt)
+//  Jack Punter (@TarriestPython)
 //
 // Emotional Support
 //  Cucui Ganon Rosario
 // =========================================================================
 
-// WARNING: This program requires a companion config.toml file provided by Abner. Without it we will crash!
-
 package main
 
 import (
@@ -113,15 +113,21 @@ func retrieveSubscribers(cfg *Config) ([]string, error) {
 		return nil, errors.New("response format error: 'emails' field not found")
 	}
 
-	/* Convert emails to []string */
+	/* De-duplicate emails using a map */
 	/* *** */
-	var subscribers []string
+	emailMap := make(map[string]bool)
 	for _, email := range emails {
 		if emailStr, ok := email.(string); ok {
-			subscribers = append(subscribers, emailStr)
+			emailMap[emailStr] = true
 		}
 	}
 
+	/* Convert the map keys back to a slice */
+	var subscribers []string
+	for email := range emailMap {
+		subscribers = append(subscribers, email)
+	}
+
 	return subscribers, nil
 }
 
@@ -276,6 +282,13 @@ func blastMail(cfg *Config, logFile string, trackingFile string, audience []stri
 		}
 	}
 
+	existingReaderCount := len(sentToAddresses)
+	newReaderCount := 0
+
+	if existingReaderCount > 0 {
+		fmt.Println("Same email file specified: Sending only to new subscribers...")
+	}
+
 	var group []string
 	for _, a := range audience {
 		if a == "" {
@@ -301,6 +314,7 @@ func blastMail(cfg *Config, logFile string, trackingFile string, audience []stri
 				for i, res := range results {
 					log.WriteString(fmt.Sprintf("%s: %s\n", group[i], res.Message))
 				}
+				newReaderCount += len(group)
 				group = group[0:0]
 			}
 		}
@@ -316,6 +330,16 @@ func blastMail(cfg *Config, logFile string, trackingFile string, audience []stri
 		for i, res := range results {
 			log.WriteString(fmt.Sprintf("%s: %s\n", group[i], res.Message))
 		}
+		newReaderCount += len(group)
+	}
+
+	if newReaderCount > 0 {
+		newSubscribers := existingReaderCount > 0
+		if newSubscribers {
+			fmt.Printf("Sent to %d new subscribers!\n", newReaderCount)
+		}
+	} else {
+		fmt.Printf("Not sent (no new subscribers)\n")
 	}
 }
 
@@ -463,10 +487,10 @@ func main() {
 		Run: func(cmd *cobra.Command, args []string) {
 			fmt.Printf(`Instructions:
 	1. Create an email file
-		* Name it whatever you want. Markdown is expected
-		* Any newlines at the start or end of the file will be removed
-		* The first line of the file will be used as {{ subject }} in the postmark template. It must start with the # symbol
-		* The rest of the file will be used as {{{ content_body }}}
+		* Call it whatever you want. Markdown format is expected
+		* Newlines at the beginning and end will be trimmed
+		* The first line is your email subject. It MUST start with the # symbol
+		* The rest of the file is your email's body
 
 	2. See who's subscribed
 		* ./meetupinvite2000 dump
@@ -475,15 +499,15 @@ func main() {
 
 	3. Do a test run
 		* ./meetupinvite2000 test [email file]
-		* You must send a test email before blasting it to everyone (update config.toml to change test recipient)
-		* If you modify the email file after testing, you must test again. Otherwise MeetupInvite2000 will complain
+		* You must send a test before blasting to everyone (please update config.toml to change test recipient)
+		* If you modify the email after testing, you must test again. Otherwise we will complain
 
 	4. Start blasting!
 		* ./meetupinvite2000 blast [email file]
-		* Will batch send your invite using our Email API (Postmark)
-		* Will produce a .track file that will list all email addresses that we attempted to send to
-		* In case of error, you can blast again. All emails listed in the .track file will be skipped
-		* Will produce a .log file with information received back from Postmark
+		* Batch sends your invite using our Email API (Postmark)
+		* Produces .track file that tracks email addresses we attempted to send to
+		* Produces .log file with information received back from Postmark
+		* In case of errors, you can always blast again. Addresses already in .track file will be skipped
 `)
 		},
 	}
@@ -505,7 +529,7 @@ func main() {
 				indexStr = strings.Repeat(" ", maxIndexWidth-len(indexStr)) + indexStr // Right-align the index
 				fmt.Printf("%s. \033[1m%s\033[0m\n", indexStr, email)
 			}
-			fmt.Printf("\nMailing list grows automatically as more subscribe at \033[1mhandmadecities.com/meetups\033[0m\n")
+			fmt.Printf("\nMailing list grows automatically as more subscribe at \033[1mhandmadecities.com/meetups/%s\033[0m\n", config.Postmark.MessageStream)
 		},
 	}