feat: allow to customize release notes update behavior (#2702)

* feat: allow to customize release notes update behavior

closes #1384

Signed-off-by: Carlos A Becker <caarlos0@gmail.com>

* fix: make it a bit better

Signed-off-by: Carlos A Becker <caarlos0@gmail.com>

* fix: jsonschema

Signed-off-by: Carlos A Becker <caarlos0@gmail.com>

internal/client/gitea.go

@@ -252,9 +252,7 @@ func (c *giteaClient) CreateRelease(ctx *context.Context, body string) (string,
 	}
 
 	if release != nil {
-		if release.Note != "" {
-			body = release.Note
-		}
+		body = getReleaseNotes(release.Note, body, ctx.Config.Release.ReleaseNotesMode)
 		release, err = c.updateRelease(ctx, title, body, release.ID)
 		if err != nil {
 			return "", err

internal/client/github.go

@@ -235,10 +235,7 @@ func (c *githubClient) CreateRelease(ctx *context.Context, body string) (string,
 			data,
 		)
 	} else {
-		// keep the pre-existing release notes
-		if release.GetBody() != "" {
-			data.Body = release.Body
-		}
+		data.Body = github.String(getReleaseNotes(release.GetBody(), body, ctx.Config.Release.ReleaseNotesMode))
 		release, _, err = c.client.Repositories.EditRelease(
 			ctx,
 			ctx.Config.Release.GitHub.Owner,

internal/client/gitlab.go

@@ -310,8 +310,8 @@ func (c *gitlabClient) CreateRelease(ctx *context.Context, body string) (release
 		log.WithField("name", release.Name).Info("release created")
 	} else {
 		desc := body
-		if release != nil && release.DescriptionHTML != "" {
-			desc = release.DescriptionHTML
+		if release != nil {
+			desc = getReleaseNotes(release.DescriptionHTML, body, ctx.Config.Release.ReleaseNotesMode)
 		}
 
 		release, _, err = c.client.Releases.UpdateRelease(projectID, tagName, &gitlab.UpdateReleaseOptions{

internal/client/release_notes.go

@@ -0,0 +1,19 @@
+package client
+
+import "github.com/goreleaser/goreleaser/pkg/config"
+
+func getReleaseNotes(existing, current string, mode config.ReleaseNotesMode) string {
+	switch mode {
+	case config.ReleaseNotesModeAppend:
+		return existing + "\n\n" + current
+	case config.ReleaseNotesModeReplace:
+		return current
+	case config.ReleaseNotesModePrepend:
+		return current + "\n\n" + existing
+	default:
+		if existing != "" {
+			return existing
+		}
+		return current
+	}
+}

internal/client/release_notes_test.go

@@ -0,0 +1,37 @@
+package client
+
+import (
+	"testing"
+
+	"github.com/goreleaser/goreleaser/pkg/config"
+	"github.com/stretchr/testify/require"
+)
+
+func TestGetReleaseNotes(t *testing.T) {
+	const existing = "existing rel notes"
+	const current = "current rel notes"
+
+	t.Run("keep and existing empty", func(t *testing.T) {
+		require.Equal(t, current, getReleaseNotes("", current, config.ReleaseNotesModeKeepExisting))
+	})
+
+	t.Run("keep", func(t *testing.T) {
+		require.Equal(t, existing, getReleaseNotes(existing, current, config.ReleaseNotesModeKeepExisting))
+	})
+
+	t.Run("replace", func(t *testing.T) {
+		require.Equal(t, current, getReleaseNotes(existing, current, config.ReleaseNotesModeReplace))
+	})
+
+	t.Run("append", func(t *testing.T) {
+		require.Equal(t, "existing rel notes\n\ncurrent rel notes", getReleaseNotes(existing, current, config.ReleaseNotesModeAppend))
+	})
+
+	t.Run("prepend", func(t *testing.T) {
+		require.Equal(t, "current rel notes\n\nexisting rel notes", getReleaseNotes(existing, current, config.ReleaseNotesModePrepend))
+	})
+
+	t.Run("invalid", func(t *testing.T) {
+		require.Equal(t, existing, getReleaseNotes(existing, current, config.ReleaseNotesMode("invalid")))
+	})
+}

pkg/config/config.go

@@ -450,6 +450,15 @@ type Archive struct {
 	AllowDifferentBinaryCount bool              `yaml:"allow_different_binary_count,omitempty"`
 }
 
+type ReleaseNotesMode string
+
+const (
+	ReleaseNotesModeKeepExisting ReleaseNotesMode = "keep-existing"
+	ReleaseNotesModeAppend       ReleaseNotesMode = "append"
+	ReleaseNotesModeReplace      ReleaseNotesMode = "replace"
+	ReleaseNotesModePrepend      ReleaseNotesMode = "prepend"
+)
+
 // Release config used for the GitHub/GitLab release.
 type Release struct {
 	GitHub                 Repo        `yaml:"github,omitempty"`
@@ -464,6 +473,8 @@ type Release struct {
 	DiscussionCategoryName string      `yaml:"discussion_category_name,omitempty"`
 	Header                 string      `yaml:"header,omitempty"`
 	Footer                 string      `yaml:"footer,omitempty"`
+
+	ReleaseNotesMode ReleaseNotesMode `yaml:"mode,omitempty" jsonschema:"title=enum=keep-existing,enum=append,enum=prepend,enum=replace,default=keep-existing"`
 }
 
 // Milestone config used for VCS milestone.

www/docs/customization/release.md

@@ -41,6 +41,17 @@ release:
   # Default is false.
   prerelease: auto
 
+  # What to do with the release notes in case there the release already exists.
+  #
+  # Valid options are:
+  # - `keep-existing`: keep the existing notes
+  # - `append`: append the current release notes to the existing notes
+  # - `prepend`: prepend the current release notes to the existing notes
+  # - `replace`: replace existing notes
+  #
+  # Default is `keep-existing`.
+  mode: append
+
   # Header template for the release body.
   # Defaults to empty.
   header: |
@@ -82,7 +93,7 @@ release:
 
 ## GitLab
 
-Second, let's see what can be customized in the `release` section for GitLab.
+Let's see what can be customized in the `release` section for GitLab.
 
 ```yaml
 # .goreleaser.yml
@@ -108,6 +119,17 @@ release:
   # Defaults to false.
   disable: true
 
+  # What to do with the release notes in case there the release already exists.
+  #
+  # Valid options are:
+  # - `keep-existing`: keep the existing notes
+  # - `append`: append the current release notes to the existing notes
+  # - `prepend`: prepend the current release notes to the existing notes
+  # - `replace`: replace existing notes
+  #
+  # Default is `keep-existing`.
+  mode: append
+
   # You can add extra pre-existing files to the release.
   # The filename on the release will be the last part of the path (base).
   # If another file with the same name exists, the last one found will be used.
@@ -157,6 +179,17 @@ release:
   # Defaults to false.
   disable: true
 
+  # What to do with the release notes in case there the release already exists.
+  #
+  # Valid options are:
+  # - `keep-existing`: keep the existing notes
+  # - `append`: append the current release notes to the existing notes
+  # - `prepend`: prepend the current release notes to the existing notes
+  # - `replace`: replace existing notes
+  #
+  # Default is `keep-existing`.
+  mode: append
+
   # You can add extra pre-existing files to the release.
   # The filename on the release will be the last part of the path (base).
   # If another file with the same name exists, the last one found will be used.

www/docs/static/schema.json

@@ -1718,6 +1718,15 @@
 					},
 					"footer": {
 						"type": "string"
+					},
+					"mode": {
+						"enum": [
+							"append",
+							"prepend",
+							"replace"
+						],
+						"type": "string",
+						"default": "keep-existing"
 					}
 				},
 				"additionalProperties": false,