Added more tests and simplified code

app/notification.go

@@ -820,20 +820,10 @@ func GetExplicitMentions(message string, keywords map[string][]string) *Explicit
 		}
 	}
 
-	processText := func(text string) {
+	checkForMention := func(word string) bool {
-		for _, word := range strings.FieldsFunc(text, func(c rune) bool {
-			// Split on any whitespace or punctuation that can't be part of an at mention or emoji pattern
-			return !(c == ':' || c == '.' || c == '-' || c == '_' || c == '@' || unicode.IsLetter(c) || unicode.IsNumber(c))
-		}) {
 		isMention := false
 
-			// skip word with format ':word:' with an assumption that it is an emoji format only
+		fmt.Printf("New Word: %v\n", word)
-			if word[0] == ':' && word[len(word)-1] == ':' {
-				continue
-			}
-
-			// remove trailing '.', as that is the end of a sentence
-			word = strings.TrimSuffix(word, ".")
 
 		if word == "@here" {
 			ret.HereMentioned = true
@@ -859,7 +849,25 @@ func GetExplicitMentions(message string, keywords map[string][]string) *Explicit
 			isMention = true
 		}
 
-			if isMention {
+		return isMention
+	}
+	processText := func(text string) {
+		for _, word := range strings.FieldsFunc(text, func(c rune) bool {
+			// Split on any whitespace or punctuation that can't be part of an at mention or emoji pattern
+			return !(c == ':' || c == '.' || c == '-' || c == '_' || c == '@' || unicode.IsLetter(c) || unicode.IsNumber(c))
+		}) {
+			// skip word with format ':word:' with an assumption that it is an emoji format only
+			if word[0] == ':' && word[len(word)-1] == ':' {
+				continue
+			}
+
+			if checkForMention(word) {
+				continue
+			}
+
+			// remove trailing '.', as that is the end of a sentence
+			word = strings.TrimSuffix(word, ".")
+			if checkForMention(word) {
 				continue
 			}
 
@@ -870,27 +878,10 @@ func GetExplicitMentions(message string, keywords map[string][]string) *Explicit
 				})
 
 				for _, splitWord := range splitWords {
-					if splitWord == "@here" {
+					if checkForMention(splitWord) {
-						ret.HereMentioned = true
+						continue
 					}
-
+					if _, ok := systemMentions[splitWord]; !ok && strings.HasPrefix(splitWord, "@") {
-					if splitWord == "@all" {
-						ret.AllMentioned = true
-					}
-
-					if splitWord == "@channel" {
-						ret.ChannelMentioned = true
-					}
-
-					// Non-case-sensitive check for regular keys
-					if ids, match := keywords[strings.ToLower(splitWord)]; match {
-						addMentionedUsers(ids)
-					}
-
-					// Case-sensitive check for first name
-					if ids, match := keywords[splitWord]; match {
-						addMentionedUsers(ids)
-					} else if _, ok := systemMentions[splitWord]; !ok && strings.HasPrefix(splitWord, "@") {
 						username := splitWord[1:]
 						ret.OtherPotentialMentions = append(ret.OtherPotentialMentions, username)
 					}

app/notification_test.go

@@ -109,6 +109,24 @@ func TestGetExplicitMentions(t *testing.T) {
 				},
 			},
 		},
+		"OnePersonWithPeriodAtEndOfUsername": {
+			Message:  "this is a message for @user.name.",
+			Keywords: map[string][]string{"@user.name.": {id1}},
+			Expected: &ExplicitMentions{
+				MentionedUserIds: map[string]bool{
+					id1: true,
+				},
+			},
+		},
+		"OnePersonWithPeriodAtEndOfUsernameButNotSimilarName": {
+			Message:  "this is a message for @user.name.",
+			Keywords: map[string][]string{"@user.name.": {id1}, "@user.name": {id2}},
+			Expected: &ExplicitMentions{
+				MentionedUserIds: map[string]bool{
+					id1: true,
+				},
+			},
+		},
 		"OnePersonAtEndOfSentence": {
 			Message:  "this is a message for @user.",
 			Keywords: map[string][]string{"@user": {id1}},