merge: fix(AutoMaintainer): do not fail is there are several emails found

Instead, try to look for the associated users, and only send a warning
if there's more than one!

See merge request !92

Services/AutoMaintainer/definition.go

@@ -159,6 +159,7 @@ func (s Service) Process(payload *gitlab.MergeEvent, log *zerolog.Logger) {
 	}
 
 	// List of maintainers that have been found
+	// This is a "set"
 	maintainersFound := make(map[string]bool)
 
 	for _, diff := range diffs {
@@ -187,7 +188,9 @@ func (s Service) Process(payload *gitlab.MergeEvent, log *zerolog.Logger) {
 			continue
 		}
 		for _, maintainer := range maintainerSlice {
-			// Add the maintainerEmail we found from the APKBUILD into the map
+			// Add the maintainerEmail we found from the APKBUILD
+			// We add all of them (with and without tags), since we
+			// are not sure which might have the user used!
 			maintainersFound[maintainer.GetEmail()] = true
 		}
 	}
@@ -200,20 +203,22 @@ func (s Service) Process(payload *gitlab.MergeEvent, log *zerolog.Logger) {
 		return
 	}
 
-	if len(maintainersFound) > 1 {
-		sLog.Warn().Msg("too many maintainers found to assign")
-		return
-	}
-
-	for k := range maintainersFound {
+	assigned := false
+	for email := range maintainersFound {
 		// Transform the email into the user
-		maintainerUser, err := hasUser(s.gitlabClient, k)
+		maintainerUser, err := hasUser(s.gitlabClient, email)
 		if err != nil {
-			sLog.Error().
-				Err(err).
-				Msg("failed to convert APKBUILD maintainer to GitLab user")
+			sLog.Info().
+				Str("email", email).
+				Msg("No user associated with this email")
+			continue
+		}
 
-			return
+		if assigned {
+			sLog.Warn().
+				Str("email", email).
+				Msg("Maintainer already assigned, but new one found")
+			continue
 		}
 
 		// Try to get Username via its ID
@@ -237,6 +242,7 @@ func (s Service) Process(payload *gitlab.MergeEvent, log *zerolog.Logger) {
 		}
 
 		sLog.Info().Str("user", maintainerUser.Username).Msg("assigning")
+		assigned = true
 
 		if !s.dryRun {
 			_, _, err = s.gitlabClient.MergeRequests.UpdateMergeRequest(