From 236a885c5d067ef83cc1ad1256943b2370d80276 Mon Sep 17 00:00:00 2001
From: Daniel Cadenas <dcadenas@gmail.com>
Date: Tue, 24 Sep 2024 19:09:40 -0300
Subject: [PATCH] Use localized follow alerts

---
 service/adapters/apns/apns.go      | 13 ++++++++-----
 service/adapters/apns/apns_test.go | 23 +++++++++++++++++++----
 2 files changed, 27 insertions(+), 9 deletions(-)

diff --git a/service/adapters/apns/apns.go b/service/adapters/apns/apns.go
index 06bb500..0783eb6 100644
--- a/service/adapters/apns/apns.go
+++ b/service/adapters/apns/apns.go
@@ -139,7 +139,8 @@ func FollowChangePayload(followChange domain.FollowChangeBatch) ([]byte, error)
 }
 
 func FollowChangePayloadWithValidation(followChange domain.FollowChangeBatch, validate bool) ([]byte, error) {
-	alertMessage := ""
+	alertObject := make(map[string]interface{})
+
 	totalNpubs := len(followChange.Follows)
 	if validate && totalNpubs > MAX_TOTAL_NPUBS {
 		return nil, errors.New("FollowChangeBatch for followee " + followChange.Followee.Hex() + " has too many npubs (" + fmt.Sprint(totalNpubs) + "). MAX_TOTAL_NPUBS is " + fmt.Sprint(MAX_TOTAL_NPUBS))
@@ -149,12 +150,14 @@ func FollowChangePayloadWithValidation(followChange domain.FollowChangeBatch, va
 
 	if singleChange {
 		if strings.HasPrefix(followChange.FriendlyFollower, "npub") {
-			alertMessage = "You have a new follower!"
+			alertObject["loc-key"] = "newFollower"
 		} else {
-			alertMessage = followChange.FriendlyFollower + " is a new follower!"
+			alertObject["loc-key"] = "namedNewFollower"
+			alertObject["loc-args"] = []interface{}{followChange.FriendlyFollower}
 		}
 	} else {
-		alertMessage = fmt.Sprintf("You have %d new followers!", len(followChange.Follows))
+		alertObject["loc-key"] = "xNewFollowers"
+		alertObject["loc-args"] = []interface{}{fmt.Sprint(len(followChange.Follows))}
 	}
 
 	followeeNpub, error := nip19.EncodePublicKey(followChange.Followee.Hex())
@@ -184,7 +187,7 @@ func FollowChangePayloadWithValidation(followChange domain.FollowChangeBatch, va
 
 	payload := map[string]interface{}{
 		"aps": map[string]interface{}{
-			"alert":              alertMessage,
+			"alert":              alertObject,
 			"sound":              "default",
 			"badge":              1,
 			"thread-id":          followeeNpub,
diff --git a/service/adapters/apns/apns_test.go b/service/adapters/apns/apns_test.go
index ef3e1c7..0b05ad3 100644
--- a/service/adapters/apns/apns_test.go
+++ b/service/adapters/apns/apns_test.go
@@ -24,7 +24,10 @@ func TestFollowChangePayload_SingleFollow(t *testing.T) {
 	payload, err := apns.FollowChangePayload(batch)
 	require.NoError(t, err)
 
-	expectedAlert := "You have a new follower!"
+	expectedAlert := map[string]interface{}{
+		"loc-key": "newFollower",
+	}
+
 	expectedPayload := map[string]interface{}{
 		"aps": map[string]interface{}{
 			"alert":              expectedAlert,
@@ -60,7 +63,11 @@ func TestFollowChangePayload_MultipleFollowsUnfollows(t *testing.T) {
 	payload, err := apns.FollowChangePayload(batch)
 	require.NoError(t, err)
 
-	expectedAlert := "You have 2 new followers!"
+	expectedAlert := map[string]interface{}{
+		"loc-key":  "xNewFollowers",
+		"loc-args": []interface{}{"2"},
+	}
+
 	expectedPayload := map[string]interface{}{
 		"aps": map[string]interface{}{
 			"alert":              expectedAlert,
@@ -94,7 +101,11 @@ func TestFollowChangePayload_SingleFollow_WithFriendlyFollower(t *testing.T) {
 	payload, err := apns.FollowChangePayload(batch)
 	require.NoError(t, err)
 
-	expectedAlert := "John Doe is a new follower!"
+	expectedAlert := map[string]interface{}{
+		"loc-key":  "namedNewFollower",
+		"loc-args": []interface{}{"John Doe"},
+	}
+
 	expectedPayload := map[string]interface{}{
 		"aps": map[string]interface{}{
 			"alert":              expectedAlert,
@@ -136,7 +147,11 @@ func TestFollowChangePayload_BatchedFollow_WithNoFriendlyFollower(t *testing.T)
 	payload, err := apns.FollowChangePayload(batch)
 	require.NoError(t, err)
 
-	expectedAlert := "You have 2 new followers!"
+	expectedAlert := map[string]interface{}{
+		"loc-key":  "xNewFollowers",
+		"loc-args": []interface{}{"2"},
+	}
+
 	expectedPayload := map[string]interface{}{
 		"aps": map[string]interface{}{
 			"alert":              expectedAlert,