From e6aeb0158a28bdcf17ef67d0c44c1b085ae2798f Mon Sep 17 00:00:00 2001
From: abnercoimbre <abnercoimbre@protonmail.com>
Date: Fri, 18 Oct 2024 15:10:16 -0700
Subject: [PATCH] De-duplicate addresses before returning email subscribers

---
 main.go | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/main.go b/main.go
index 0794636..d4b8025 100644
--- a/main.go
+++ b/main.go
@@ -115,15 +115,21 @@ 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
 }