Avoid sending "0 new commits" webhook

Signed-off-by: Till Faelligen <tfaelligen@gmail.com>

modules/webhook/dingtalk.go

@@ -83,6 +83,10 @@ func getDingtalkForkPayload(p *api.ForkPayload) (*DingtalkPayload, error) {
 }
 
 func getDingtalkPushPayload(p *api.PushPayload) (*DingtalkPayload, error) {
+	if len(p.Commits) == 0 {
+		return nil, fmt.Errorf("no commits in payload")
+	}
+
 	var (
 		branchName = git.RefEndName(p.Ref)
 		commitDesc string

modules/webhook/discord.go

@@ -177,6 +177,10 @@ func getDiscordForkPayload(p *api.ForkPayload, meta *DiscordMeta) (*DiscordPaylo
 }
 
 func getDiscordPushPayload(p *api.PushPayload, meta *DiscordMeta) (*DiscordPayload, error) {
+	if len(p.Commits) == 0 {
+		return nil, fmt.Errorf("no commits in payload")
+	}
+
 	var (
 		branchName = git.RefEndName(p.Ref)
 		commitDesc string

modules/webhook/feishu.go

@@ -66,6 +66,10 @@ func getFeishuForkPayload(p *api.ForkPayload) (*FeishuPayload, error) {
 }
 
 func getFeishuPushPayload(p *api.PushPayload) (*FeishuPayload, error) {
+	if len(p.Commits) == 0 {
+		return nil, fmt.Errorf("no commits in payload")
+	}
+
 	var (
 		branchName = git.RefEndName(p.Ref)
 		commitDesc string

modules/webhook/matrix.go

@@ -145,6 +145,10 @@ func getMatrixReleasePayload(p *api.ReleasePayload, matrix *MatrixMeta) (*Matrix
 }
 
 func getMatrixPushPayload(p *api.PushPayload, matrix *MatrixMeta) (*MatrixPayloadUnsafe, error) {
+	if len(p.Commits) == 0 {
+		return nil, fmt.Errorf("no commits in payload")
+	}
+
 	var commitDesc string
 
 	if len(p.Commits) == 1 {

modules/webhook/msteams.go

@@ -196,6 +196,10 @@ func getMSTeamsForkPayload(p *api.ForkPayload) (*MSTeamsPayload, error) {
 }
 
 func getMSTeamsPushPayload(p *api.PushPayload) (*MSTeamsPayload, error) {
+	if len(p.Commits) == 0 {
+		return nil, fmt.Errorf("no commits in payload")
+	}
+
 	var (
 		branchName = git.RefEndName(p.Ref)
 		commitDesc string

modules/webhook/slack.go

@@ -189,6 +189,10 @@ func getSlackReleasePayload(p *api.ReleasePayload, slack *SlackMeta) (*SlackPayl
 }
 
 func getSlackPushPayload(p *api.PushPayload, slack *SlackMeta) (*SlackPayload, error) {
+	if len(p.Commits) == 0 {
+		return nil, fmt.Errorf("no commits in payload")
+	}
+
 	// n new commits
 	var (
 		commitDesc   string

modules/webhook/telegram.go

@@ -86,6 +86,10 @@ func getTelegramForkPayload(p *api.ForkPayload) (*TelegramPayload, error) {
 }
 
 func getTelegramPushPayload(p *api.PushPayload) (*TelegramPayload, error) {
+	if len(p.Commits) == 0 {
+		return nil, fmt.Errorf("no commits in payload")
+	}
+
 	var (
 		branchName = git.RefEndName(p.Ref)
 		commitDesc string