From 5b51fab30f3be2b14b2aceecb3b570f76437b986 Mon Sep 17 00:00:00 2001
From: Simon Prochazka <simon@fallion.net>
Date: Sat, 19 Oct 2019 20:29:26 +0200
Subject: [PATCH] fix: add all commits if previous tag is not available

- in new repositories previous tag is not available, this will allow for iterating all unreleased commits
---
 cmd/publish.go | 8 +++++++-
 go.mod         | 1 +
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/cmd/publish.go b/cmd/publish.go
index 5ccdf24..60136e1 100644
--- a/cmd/publish.go
+++ b/cmd/publish.go
@@ -5,11 +5,12 @@ import (
 	"fmt"
 	"strings"
 
-	"github.com/commitsar-app/git/pkg"
+	history "github.com/commitsar-app/git/pkg"
 	"github.com/commitsar-app/release-notary/internal/releaser"
 	"github.com/commitsar-app/release-notary/internal/text"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
+	"gopkg.in/src-d/go-git.v4/plumbing"
 )
 
 func init() {
@@ -44,6 +45,11 @@ var publishCmd = &cobra.Command{
 			return err
 		}
 
+		// If previous tag is not available, provide empty hash so that all commits are iterated.
+		if err == history.ErrPrevTagNotAvailable {
+			lastTag = plumbing.Hash{}
+		}
+
 		commits, err := repo.CommitsBetween(currentCommit.Hash, lastTag)
 
 		if err != nil {
diff --git a/go.mod b/go.mod
index 41e79b7..09f2776 100644
--- a/go.mod
+++ b/go.mod
@@ -8,4 +8,5 @@ require (
 	github.com/spf13/cobra v0.0.5
 	github.com/spf13/viper v1.4.0
 	github.com/stretchr/testify v1.4.0
+	gopkg.in/src-d/go-git.v4 v4.13.1
 )