refactor: remove changelog pkg

pkg/generator/changelog_generator.go

+package generator
+
+import (
+	"github.com/go-semantic-release/semantic-release/pkg/semrel"
+)
+
+type ChangelogGeneratorConfig struct {
+	Commits       []*semrel.Commit
+	LatestRelease *semrel.Release
+	NewVersion    string
+}
+
+type ChangelogGenerator interface {
+	Generate(*ChangelogGeneratorConfig) string
+}

pkg/generator/changelog/changelog.go → pkg/generator/changelog_generator_default.go

-package changelog
+package generator
 
 import (
 	"fmt"
@@ -9,17 +9,7 @@ import (
 	"github.com/go-semantic-release/semantic-release/pkg/semrel"
 )
 
-type Config struct {
-	Commits       []*semrel.Commit
-	LatestRelease *semrel.Release
-	NewVersion    string
-}
-
-type Generator interface {
-	Generate(*Config) string
-}
-
-type DefaultGenerator struct{}
+type DefaultChangelogGenerator struct{}
 
 func trimSHA(sha string) string {
 	if len(sha) < 9 {
@@ -61,7 +51,7 @@ func getSortedKeys(m *map[string]string) []string {
 	return keys
 }
 
-func (*DefaultGenerator) Generate(changelogConfig *Config) string {
+func (*DefaultChangelogGenerator) Generate(changelogConfig *ChangelogGeneratorConfig) string {
 	ret := fmt.Sprintf("## %s (%s)\n\n", changelogConfig.NewVersion, time.Now().UTC().Format("2006-01-02"))
 	typeScopeMap := make(map[string]string)
 	for _, commit := range changelogConfig.Commits {

pkg/generator/changelog/changelog_test.go → pkg/generator/changelog_generator_test.go

-package changelog
+package generator
 
 import (
 	"strings"
@@ -8,7 +8,7 @@ import (
 )
 
 func TestDefaultGenerator(t *testing.T) {
-	changelogConfig := &Config{}
+	changelogConfig := &ChangelogGeneratorConfig{}
 	changelogConfig.Commits = []*semrel.Commit{
 		{},
 		{SHA: "123456789", Type: "feat", Scope: "app", Message: "commit message"},
@@ -19,7 +19,7 @@ func TestDefaultGenerator(t *testing.T) {
 	}
 	changelogConfig.LatestRelease = &semrel.Release{SHA: "stop"}
 	changelogConfig.NewVersion = "2.0.0"
-	generator := &DefaultGenerator{}
+	generator := &DefaultChangelogGenerator{}
 	changelog := generator.Generate(changelogConfig)
 	if !strings.Contains(changelog, "* **app:** commit message (12345678)") ||
 		!strings.Contains(changelog, "* commit message (abcd)") ||

pkg/plugin/manager/manager.go

@@ -4,14 +4,13 @@ import (
 	"os"
 
 	"github.com/go-semantic-release/semantic-release/pkg/analyzer"
-
 	"github.com/go-semantic-release/semantic-release/pkg/condition"
 	"github.com/go-semantic-release/semantic-release/pkg/condition/defaultci"
 	githubCI "github.com/go-semantic-release/semantic-release/pkg/condition/github"
 	gitlabCI "github.com/go-semantic-release/semantic-release/pkg/condition/gitlab"
 	"github.com/go-semantic-release/semantic-release/pkg/condition/travis"
 	"github.com/go-semantic-release/semantic-release/pkg/config"
-	"github.com/go-semantic-release/semantic-release/pkg/generator/changelog"
+	"github.com/go-semantic-release/semantic-release/pkg/generator"
 	"github.com/go-semantic-release/semantic-release/pkg/provider"
 	"github.com/go-semantic-release/semantic-release/pkg/provider/github"
 	"github.com/go-semantic-release/semantic-release/pkg/provider/gitlab"
@@ -51,8 +50,8 @@ func (m *Manager) GetCommitAnalyzer() (analyzer.CommitAnalyzer, error) {
 	return &analyzer.DefaultCommitAnalyzer{}, nil
 }
 
-func (m *Manager) GetChangelogGenerator() (changelog.Generator, error) {
-	return &changelog.DefaultGenerator{}, nil
+func (m *Manager) GetChangelogGenerator() (generator.ChangelogGenerator, error) {
+	return &generator.DefaultChangelogGenerator{}, nil
 }
 
 func (m *Manager) GetUpdater() (updater.Updater, error) {