From 2cd32e3ed3c36272e99e8908e2f4058e1eaf98dc Mon Sep 17 00:00:00 2001
From: Beatriz Vieira <beatriznsv@gmail.com>
Date: Sat, 1 Feb 2020 21:00:53 -0300
Subject: [PATCH 1/8] refactor: add version to releasenote struct

---
 cmd/git-sv/handlers.go  |  4 ++--
 sv/helpers_test.go      |  3 ++-
 sv/releasenotes.go      | 15 ++++++++-------
 sv/releasenotes_test.go | 18 ++++++++++++------
 4 files changed, 24 insertions(+), 16 deletions(-)

diff --git a/cmd/git-sv/handlers.go b/cmd/git-sv/handlers.go
index 7615184..f6da003 100644
--- a/cmd/git-sv/handlers.go
+++ b/cmd/git-sv/handlers.go
@@ -93,8 +93,8 @@ func releaseNotesHandler(git sv.Git, semverProcessor sv.SemVerCommitsProcessor,
 			return err
 		}
 
-		releasenote := rnProcessor.Get(date, commits)
-		fmt.Println(rnProcessor.Format(releasenote, rnVersion))
+		releasenote := rnProcessor.Create(rnVersion, date, commits)
+		fmt.Println(rnProcessor.Format(releasenote))
 		return nil
 	}
 }
diff --git a/sv/helpers_test.go b/sv/helpers_test.go
index 6d54f11..d1c0273 100644
--- a/sv/helpers_test.go
+++ b/sv/helpers_test.go
@@ -19,8 +19,9 @@ func commitlog(t string, metadata map[string]string) GitCommitLog {
 	}
 }
 
-func releaseNote(date time.Time, sections map[string]ReleaseNoteSection, breakingChanges []string) ReleaseNote {
+func releaseNote(version semver.Version, date time.Time, sections map[string]ReleaseNoteSection, breakingChanges []string) ReleaseNote {
 	return ReleaseNote{
+		Version:         version,
 		Date:            date.Truncate(time.Minute),
 		Sections:        sections,
 		BreakingChanges: breakingChanges,
diff --git a/sv/releasenotes.go b/sv/releasenotes.go
index 991c3a4..5389f1f 100644
--- a/sv/releasenotes.go
+++ b/sv/releasenotes.go
@@ -33,8 +33,8 @@ const markdownTemplate = `## v{{.Version}} ({{.Date}})
 
 // ReleaseNoteProcessor release note processor interface.
 type ReleaseNoteProcessor interface {
-	Get(date time.Time, commits []GitCommitLog) ReleaseNote
-	Format(releasenote ReleaseNote, version semver.Version) string
+	Create(version semver.Version, date time.Time, commits []GitCommitLog) ReleaseNote
+	Format(releasenote ReleaseNote) string
 }
 
 // ReleaseNoteProcessorImpl release note based on commit log.
@@ -49,8 +49,8 @@ func NewReleaseNoteProcessor(tags map[string]string) *ReleaseNoteProcessorImpl {
 	return &ReleaseNoteProcessorImpl{tags: tags, template: template}
 }
 
-// Get generate a release note based on commits.
-func (p ReleaseNoteProcessorImpl) Get(date time.Time, commits []GitCommitLog) ReleaseNote {
+// Create create a release note based on commits.
+func (p ReleaseNoteProcessorImpl) Create(version semver.Version, date time.Time, commits []GitCommitLog) ReleaseNote {
 	sections := make(map[string]ReleaseNoteSection)
 	var breakingChanges []string
 	for _, commit := range commits {
@@ -67,13 +67,13 @@ func (p ReleaseNoteProcessorImpl) Get(date time.Time, commits []GitCommitLog) Re
 		}
 	}
 
-	return ReleaseNote{Date: date.Truncate(time.Minute), Sections: sections, BreakingChanges: breakingChanges}
+	return ReleaseNote{Version: version, Date: date.Truncate(time.Minute), Sections: sections, BreakingChanges: breakingChanges}
 }
 
 // Format format a release note.
-func (p ReleaseNoteProcessorImpl) Format(releasenote ReleaseNote, version semver.Version) string {
+func (p ReleaseNoteProcessorImpl) Format(releasenote ReleaseNote) string {
 	templateVars := releaseNoteTemplate{
-		Version:         fmt.Sprintf("%d.%d.%d", version.Major(), version.Minor(), version.Patch()),
+		Version:         fmt.Sprintf("%d.%d.%d", releasenote.Version.Major(), releasenote.Version.Minor(), releasenote.Version.Patch()),
 		Date:            releasenote.Date.Format("2006-01-02"),
 		Sections:        releasenote.Sections,
 		BreakingChanges: releasenote.BreakingChanges,
@@ -86,6 +86,7 @@ func (p ReleaseNoteProcessorImpl) Format(releasenote ReleaseNote, version semver
 
 // ReleaseNote release note.
 type ReleaseNote struct {
+	Version         semver.Version
 	Date            time.Time
 	Sections        map[string]ReleaseNoteSection
 	BreakingChanges []string
diff --git a/sv/releasenotes_test.go b/sv/releasenotes_test.go
index c65d063..674f772 100644
--- a/sv/releasenotes_test.go
+++ b/sv/releasenotes_test.go
@@ -4,41 +4,47 @@ import (
 	"reflect"
 	"testing"
 	"time"
+
+	"github.com/Masterminds/semver"
 )
 
-func TestReleaseNoteProcessorImpl_Get(t *testing.T) {
+func TestReleaseNoteProcessorImpl_Create(t *testing.T) {
 	date := time.Now()
 
 	tests := []struct {
 		name    string
+		version semver.Version
 		date    time.Time
 		commits []GitCommitLog
 		want    ReleaseNote
 	}{
 		{
 			name:    "mapped tag",
+			version: *semver.MustParse("1.0.0"),
 			date:    date,
 			commits: []GitCommitLog{commitlog("t1", map[string]string{})},
-			want:    releaseNote(date, map[string]ReleaseNoteSection{"t1": rnSection("Tag 1", []GitCommitLog{commitlog("t1", map[string]string{})})}, nil),
+			want:    releaseNote(*semver.MustParse("1.0.0"), date, map[string]ReleaseNoteSection{"t1": rnSection("Tag 1", []GitCommitLog{commitlog("t1", map[string]string{})})}, nil),
 		},
 		{
 			name:    "unmapped tag",
+			version: *semver.MustParse("1.0.0"),
 			date:    date,
 			commits: []GitCommitLog{commitlog("t1", map[string]string{}), commitlog("unmapped", map[string]string{})},
-			want:    releaseNote(date, map[string]ReleaseNoteSection{"t1": rnSection("Tag 1", []GitCommitLog{commitlog("t1", map[string]string{})})}, nil),
+			want:    releaseNote(*semver.MustParse("1.0.0"), date, map[string]ReleaseNoteSection{"t1": rnSection("Tag 1", []GitCommitLog{commitlog("t1", map[string]string{})})}, nil),
 		},
 		{
 			name:    "breaking changes tag",
+			version: *semver.MustParse("1.0.0"),
 			date:    date,
 			commits: []GitCommitLog{commitlog("t1", map[string]string{}), commitlog("unmapped", map[string]string{"breakingchange": "breaks"})},
-			want:    releaseNote(date, map[string]ReleaseNoteSection{"t1": rnSection("Tag 1", []GitCommitLog{commitlog("t1", map[string]string{})})}, []string{"breaks"}),
+			want:    releaseNote(*semver.MustParse("1.0.0"), date, map[string]ReleaseNoteSection{"t1": rnSection("Tag 1", []GitCommitLog{commitlog("t1", map[string]string{})})}, []string{"breaks"}),
 		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			p := NewReleaseNoteProcessor(map[string]string{"t1": "Tag 1", "t2": "Tag 2"})
-			if got := p.Get(tt.date, tt.commits); !reflect.DeepEqual(got, tt.want) {
-				t.Errorf("ReleaseNoteProcessorImpl.Get() = %v, want %v", got, tt.want)
+			if got := p.Create(tt.version, tt.date, tt.commits); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("ReleaseNoteProcessorImpl.Create() = %v, want %v", got, tt.want)
 			}
 		})
 	}

From e18b0cc08f32fbea8016be26b6535132a1f10c5c Mon Sep 17 00:00:00 2001
From: Beatriz Vieira <beatriznsv@gmail.com>
Date: Sat, 1 Feb 2020 21:15:12 -0300
Subject: [PATCH 2/8] refactor: merge breaking change key and tag

---
 sv/git.go          | 13 ++++++++-----
 sv/releasenotes.go |  2 +-
 sv/semver.go       |  5 +----
 3 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/sv/git.go b/sv/git.go
index 709d336..b126b31 100644
--- a/sv/git.go
+++ b/sv/git.go
@@ -13,10 +13,13 @@ import (
 )
 
 const (
-	logSeparator       = "##"
-	endLine            = "~~"
-	breakingChangesKey = "breakingchange"
-	issueIDKey         = "issueid"
+	logSeparator = "##"
+	endLine      = "~~"
+
+	// BreakingChangesKey key to breaking change metadata
+	BreakingChangesKey = "breakingchange"
+	// IssueIDKey key to issue id metadata
+	IssueIDKey = "issueid"
 )
 
 // Git commands
@@ -52,7 +55,7 @@ type GitImpl struct {
 // NewGit constructor
 func NewGit(breakinChangePrefixes, issueIDPrefixes []string, tagPattern string) *GitImpl {
 	return &GitImpl{
-		messageMetadata: map[string][]string{breakingChangesKey: breakinChangePrefixes, issueIDKey: issueIDPrefixes},
+		messageMetadata: map[string][]string{BreakingChangesKey: breakinChangePrefixes, IssueIDKey: issueIDPrefixes},
 		tagPattern:      tagPattern,
 	}
 }
diff --git a/sv/releasenotes.go b/sv/releasenotes.go
index 5389f1f..8b7ed08 100644
--- a/sv/releasenotes.go
+++ b/sv/releasenotes.go
@@ -62,7 +62,7 @@ func (p ReleaseNoteProcessorImpl) Create(version semver.Version, date time.Time,
 			section.Items = append(section.Items, commit)
 			sections[commit.Type] = section
 		}
-		if value, exists := commit.Metadata[BreakingChangeTag]; exists {
+		if value, exists := commit.Metadata[BreakingChangesKey]; exists {
 			breakingChanges = append(breakingChanges, value)
 		}
 	}
diff --git a/sv/semver.go b/sv/semver.go
index 1c0523c..8350bda 100644
--- a/sv/semver.go
+++ b/sv/semver.go
@@ -24,9 +24,6 @@ func ToVersion(value string) (semver.Version, error) {
 	return *v, nil
 }
 
-// BreakingChangeTag breaking change tag from commit metadata
-const BreakingChangeTag string = "breakingchange"
-
 // SemVerCommitsProcessor interface
 type SemVerCommitsProcessor interface {
 	NextVersion(version semver.Version, commits []GitCommitLog) semver.Version
@@ -72,7 +69,7 @@ func (p SemVerCommitsProcessorImpl) NextVersion(version semver.Version, commits
 }
 
 func (p SemVerCommitsProcessorImpl) versionTypeToUpdate(commit GitCommitLog) versionType {
-	if _, exists := commit.Metadata[BreakingChangeTag]; exists {
+	if _, exists := commit.Metadata[BreakingChangesKey]; exists {
 		return major
 	}
 	if _, exists := p.MajorVersionTypes[commit.Type]; exists {

From f4d149933193186889b5a427153eb6bd74791761 Mon Sep 17 00:00:00 2001
From: Beatriz Vieira <beatriznsv@gmail.com>
Date: Sat, 1 Feb 2020 22:40:31 -0300
Subject: [PATCH 3/8] refactor: extract template operation to formatter struct

---
 cmd/git-sv/handlers.go |  6 ++---
 cmd/git-sv/main.go     |  5 ++--
 sv/formatter.go        | 59 ++++++++++++++++++++++++++++++++++++++++++
 sv/releasenotes.go     | 46 ++------------------------------
 4 files changed, 67 insertions(+), 49 deletions(-)
 create mode 100644 sv/formatter.go

diff --git a/cmd/git-sv/handlers.go b/cmd/git-sv/handlers.go
index f6da003..ebde62b 100644
--- a/cmd/git-sv/handlers.go
+++ b/cmd/git-sv/handlers.go
@@ -76,7 +76,7 @@ func getTagCommits(git sv.Git, tag string) ([]sv.GitCommitLog, error) {
 	return git.Log(prev, tag)
 }
 
-func releaseNotesHandler(git sv.Git, semverProcessor sv.SemVerCommitsProcessor, rnProcessor sv.ReleaseNoteProcessor) func(c *cli.Context) error {
+func releaseNotesHandler(git sv.Git, semverProcessor sv.SemVerCommitsProcessor, rnProcessor sv.ReleaseNoteProcessor, outputFormatter sv.OutputFormatter) func(c *cli.Context) error {
 	return func(c *cli.Context) error {
 		var commits []sv.GitCommitLog
 		var rnVersion semver.Version
@@ -94,7 +94,7 @@ func releaseNotesHandler(git sv.Git, semverProcessor sv.SemVerCommitsProcessor,
 		}
 
 		releasenote := rnProcessor.Create(rnVersion, date, commits)
-		fmt.Println(rnProcessor.Format(releasenote))
+		fmt.Println(outputFormatter.FormatReleaseNote(releasenote))
 		return nil
 	}
 }
@@ -161,7 +161,7 @@ func getNextVersionInfo(git sv.Git, semverProcessor sv.SemVerCommitsProcessor) (
 	return semverProcessor.NextVersion(currentVer, commits), time.Now(), commits, nil
 }
 
-func tagHandler(git sv.Git, semverProcessor sv.SemVerCommitsProcessor, rnProcessor sv.ReleaseNoteProcessor) func(c *cli.Context) error {
+func tagHandler(git sv.Git, semverProcessor sv.SemVerCommitsProcessor) func(c *cli.Context) error {
 	return func(c *cli.Context) error {
 		describe := git.Describe()
 
diff --git a/cmd/git-sv/main.go b/cmd/git-sv/main.go
index 67c8e20..2380f27 100644
--- a/cmd/git-sv/main.go
+++ b/cmd/git-sv/main.go
@@ -17,6 +17,7 @@ func main() {
 	git := sv.NewGit(cfg.BreakingChangePrefixes, cfg.IssueIDPrefixes, cfg.TagPattern)
 	semverProcessor := sv.NewSemVerCommitsProcessor(cfg.IncludeUnknownTypeAsPatch, cfg.MajorVersionTypes, cfg.MinorVersionTypes, cfg.PatchVersionTypes)
 	releasenotesProcessor := sv.NewReleaseNoteProcessor(cfg.ReleaseNotesTags)
+	outputFormatter := sv.NewOutputFormatter()
 
 	app := cli.NewApp()
 	app.Name = "sv"
@@ -46,14 +47,14 @@ func main() {
 			Name:    "release-notes",
 			Aliases: []string{"rn"},
 			Usage:   "generate release notes",
-			Action:  releaseNotesHandler(git, semverProcessor, releasenotesProcessor),
+			Action:  releaseNotesHandler(git, semverProcessor, releasenotesProcessor, outputFormatter),
 			Flags:   []cli.Flag{&cli.StringFlag{Name: "t", Usage: "get release note from tag"}},
 		},
 		{
 			Name:    "tag",
 			Aliases: []string{"tg"},
 			Usage:   "generate tag with version based on git commit messages",
-			Action:  tagHandler(git, semverProcessor, releasenotesProcessor),
+			Action:  tagHandler(git, semverProcessor),
 		},
 	}
 
diff --git a/sv/formatter.go b/sv/formatter.go
new file mode 100644
index 0000000..b9d0d70
--- /dev/null
+++ b/sv/formatter.go
@@ -0,0 +1,59 @@
+package sv
+
+import (
+	"bytes"
+	"fmt"
+	"text/template"
+)
+
+type releaseNoteTemplateVariables struct {
+	Version         string
+	Date            string
+	Sections        map[string]ReleaseNoteSection
+	BreakingChanges []string
+}
+
+const rnTemplate = `## v{{.Version}} ({{.Date}})
+
+{{if .Sections.feat}}### {{.Sections.feat.Name}}
+{{range $k,$v := .Sections.feat.Items}}
+- {{if $v.Scope}}**{{$v.Scope}}:** {{end}}{{$v.Subject}} ({{$v.Hash}}) {{if $v.Metadata.issueid}}({{$v.Metadata.issueid}}){{end}}{{end}}{{end}}
+
+{{if .Sections.fix}}### {{.Sections.fix.Name}}
+{{range $k,$v := .Sections.fix.Items}}
+- {{if $v.Scope}}**{{$v.Scope}}:** {{end}}{{$v.Subject}} ({{$v.Hash}}) {{if $v.Metadata.issueid}}({{$v.Metadata.issueid}}){{end}}{{end}}{{end}}
+
+{{if .BreakingChanges}}### Breaking Changes
+{{range $k,$v := .BreakingChanges}}
+- {{$v}}{{end}}
+{{end}}`
+
+// OutputFormatter output formatter interface.
+type OutputFormatter interface {
+	FormatReleaseNote(releasenote ReleaseNote) string
+}
+
+// OutputFormatterImpl formater for release note and changelog.
+type OutputFormatterImpl struct {
+	releasenoteTemplate *template.Template
+}
+
+// NewOutputFormatter TemplateProcessor constructor.
+func NewOutputFormatter() *OutputFormatterImpl {
+	template := template.Must(template.New("releasenotes").Parse(rnTemplate))
+	return &OutputFormatterImpl{releasenoteTemplate: template}
+}
+
+// FormatReleaseNote format a release note.
+func (p OutputFormatterImpl) FormatReleaseNote(releasenote ReleaseNote) string {
+	templateVars := releaseNoteTemplateVariables{
+		Version:         fmt.Sprintf("%d.%d.%d", releasenote.Version.Major(), releasenote.Version.Minor(), releasenote.Version.Patch()),
+		Date:            releasenote.Date.Format("2006-01-02"),
+		Sections:        releasenote.Sections,
+		BreakingChanges: releasenote.BreakingChanges,
+	}
+
+	var b bytes.Buffer
+	p.releasenoteTemplate.Execute(&b, templateVars)
+	return b.String()
+}
diff --git a/sv/releasenotes.go b/sv/releasenotes.go
index 8b7ed08..9a30f41 100644
--- a/sv/releasenotes.go
+++ b/sv/releasenotes.go
@@ -1,52 +1,24 @@
 package sv
 
 import (
-	"bytes"
-	"fmt"
-	"text/template"
 	"time"
 
 	"github.com/Masterminds/semver"
 )
 
-type releaseNoteTemplate struct {
-	Version         string
-	Date            string
-	Sections        map[string]ReleaseNoteSection
-	BreakingChanges []string
-}
-
-const markdownTemplate = `## v{{.Version}} ({{.Date}})
-
-{{if .Sections.feat}}### {{.Sections.feat.Name}}
-{{range $k,$v := .Sections.feat.Items}}
-- {{if $v.Scope}}**{{$v.Scope}}:** {{end}}{{$v.Subject}} ({{$v.Hash}}) {{if $v.Metadata.issueid}}({{$v.Metadata.issueid}}){{end}}{{end}}{{end}}
-
-{{if .Sections.fix}}### {{.Sections.fix.Name}}
-{{range $k,$v := .Sections.fix.Items}}
-- {{if $v.Scope}}**{{$v.Scope}}:** {{end}}{{$v.Subject}} ({{$v.Hash}}) {{if $v.Metadata.issueid}}({{$v.Metadata.issueid}}){{end}}{{end}}{{end}}
-
-{{if .BreakingChanges}}### Breaking Changes
-{{range $k,$v := .BreakingChanges}}
-- {{$v}}{{end}}
-{{end}}`
-
 // ReleaseNoteProcessor release note processor interface.
 type ReleaseNoteProcessor interface {
 	Create(version semver.Version, date time.Time, commits []GitCommitLog) ReleaseNote
-	Format(releasenote ReleaseNote) string
 }
 
 // ReleaseNoteProcessorImpl release note based on commit log.
 type ReleaseNoteProcessorImpl struct {
-	tags     map[string]string
-	template *template.Template
+	tags map[string]string
 }
 
 // NewReleaseNoteProcessor ReleaseNoteProcessor constructor.
 func NewReleaseNoteProcessor(tags map[string]string) *ReleaseNoteProcessorImpl {
-	template := template.Must(template.New("markdown").Parse(markdownTemplate))
-	return &ReleaseNoteProcessorImpl{tags: tags, template: template}
+	return &ReleaseNoteProcessorImpl{tags: tags}
 }
 
 // Create create a release note based on commits.
@@ -70,20 +42,6 @@ func (p ReleaseNoteProcessorImpl) Create(version semver.Version, date time.Time,
 	return ReleaseNote{Version: version, Date: date.Truncate(time.Minute), Sections: sections, BreakingChanges: breakingChanges}
 }
 
-// Format format a release note.
-func (p ReleaseNoteProcessorImpl) Format(releasenote ReleaseNote) string {
-	templateVars := releaseNoteTemplate{
-		Version:         fmt.Sprintf("%d.%d.%d", releasenote.Version.Major(), releasenote.Version.Minor(), releasenote.Version.Patch()),
-		Date:            releasenote.Date.Format("2006-01-02"),
-		Sections:        releasenote.Sections,
-		BreakingChanges: releasenote.BreakingChanges,
-	}
-
-	var b bytes.Buffer
-	p.template.Execute(&b, templateVars)
-	return b.String()
-}
-
 // ReleaseNote release note.
 type ReleaseNote struct {
 	Version         semver.Version

From fef044c99def6f6ee6f506ec1ee620eac7ae90fc Mon Sep 17 00:00:00 2001
From: Beatriz Vieira <beatriznsv@gmail.com>
Date: Sat, 1 Feb 2020 23:05:39 -0300
Subject: [PATCH 4/8] fix: trim spaces from release notes template

---
 sv/formatter.go | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/sv/formatter.go b/sv/formatter.go
index b9d0d70..8e9a195 100644
--- a/sv/formatter.go
+++ b/sv/formatter.go
@@ -14,19 +14,27 @@ type releaseNoteTemplateVariables struct {
 }
 
 const rnTemplate = `## v{{.Version}} ({{.Date}})
+{{- if .Sections.feat}}
 
-{{if .Sections.feat}}### {{.Sections.feat.Name}}
+### {{.Sections.feat.Name}}
 {{range $k,$v := .Sections.feat.Items}}
-- {{if $v.Scope}}**{{$v.Scope}}:** {{end}}{{$v.Subject}} ({{$v.Hash}}) {{if $v.Metadata.issueid}}({{$v.Metadata.issueid}}){{end}}{{end}}{{end}}
+- {{if $v.Scope}}**{{$v.Scope}}:** {{end}}{{$v.Subject}} ({{$v.Hash}}){{if $v.Metadata.issueid}} ({{$v.Metadata.issueid}}){{end}}{{end}}
+{{- end}}
 
-{{if .Sections.fix}}### {{.Sections.fix.Name}}
+{{- if .Sections.fix}}
+
+### {{.Sections.fix.Name}}
 {{range $k,$v := .Sections.fix.Items}}
-- {{if $v.Scope}}**{{$v.Scope}}:** {{end}}{{$v.Subject}} ({{$v.Hash}}) {{if $v.Metadata.issueid}}({{$v.Metadata.issueid}}){{end}}{{end}}{{end}}
+- {{if $v.Scope}}**{{$v.Scope}}:** {{end}}{{$v.Subject}} ({{$v.Hash}}){{if $v.Metadata.issueid}} ({{$v.Metadata.issueid}}){{end}}{{end}}
+{{- end}}
+
+{{- if .BreakingChanges}}
 
-{{if .BreakingChanges}}### Breaking Changes
+### Breaking Changes
 {{range $k,$v := .BreakingChanges}}
 - {{$v}}{{end}}
-{{end}}`
+{{- end}}
+`
 
 // OutputFormatter output formatter interface.
 type OutputFormatter interface {

From 851dcb91d206b8b5f4de1d58e9818326050497a4 Mon Sep 17 00:00:00 2001
From: Beatriz Vieira <beatriznsv@gmail.com>
Date: Sat, 1 Feb 2020 23:51:29 -0300
Subject: [PATCH 5/8] refactor: split release notes template in sections

---
 sv/formatter.go         | 37 +++++++++++++++++++------------------
 sv/helpers_test.go      |  2 +-
 sv/releasenotes_test.go |  6 +++---
 3 files changed, 23 insertions(+), 22 deletions(-)

diff --git a/sv/formatter.go b/sv/formatter.go
index 8e9a195..ce33f16 100644
--- a/sv/formatter.go
+++ b/sv/formatter.go
@@ -13,27 +13,25 @@ type releaseNoteTemplateVariables struct {
 	BreakingChanges []string
 }
 
-const rnTemplate = `## v{{.Version}} ({{.Date}})
-{{- if .Sections.feat}}
-
-### {{.Sections.feat.Name}}
-{{range $k,$v := .Sections.feat.Items}}
-- {{if $v.Scope}}**{{$v.Scope}}:** {{end}}{{$v.Subject}} ({{$v.Hash}}){{if $v.Metadata.issueid}} ({{$v.Metadata.issueid}}){{end}}{{end}}
-{{- end}}
+const rnSectionItem = "- {{if .Scope}}**{{.Scope}}:** {{end}}{{.Subject}} ({{.Hash}}){{if .Metadata.issueid}} ({{.Metadata.issueid}}){{end}}"
+const rnSection = `{{- if .}}
 
-{{- if .Sections.fix}}
-
-### {{.Sections.fix.Name}}
-{{range $k,$v := .Sections.fix.Items}}
-- {{if $v.Scope}}**{{$v.Scope}}:** {{end}}{{$v.Subject}} ({{$v.Hash}}){{if $v.Metadata.issueid}} ({{$v.Metadata.issueid}}){{end}}{{end}}
+### {{.Name}}
+{{range $k,$v := .Items}}
+{{template "rnSectionItem" $v}}
 {{- end}}
-
-{{- if .BreakingChanges}}
+{{- end}}`
+const rnSectionBreakingChanges = `{{- if .}}
 
 ### Breaking Changes
-{{range $k,$v := .BreakingChanges}}
-- {{$v}}{{end}}
+{{range $k,$v := .}}
+- {{$v}}
 {{- end}}
+{{- end}}`
+const rnTemplate = `## v{{.Version}} ({{.Date}})
+{{- template "rnSection" .Sections.feat}}
+{{- template "rnSection" .Sections.fix}}
+{{- template "rnSectionBreakingChanges" .BreakingChanges}}
 `
 
 // OutputFormatter output formatter interface.
@@ -48,8 +46,11 @@ type OutputFormatterImpl struct {
 
 // NewOutputFormatter TemplateProcessor constructor.
 func NewOutputFormatter() *OutputFormatterImpl {
-	template := template.Must(template.New("releasenotes").Parse(rnTemplate))
-	return &OutputFormatterImpl{releasenoteTemplate: template}
+	t := template.Must(template.New("releasenotes").Parse(rnTemplate))
+	template.Must(t.New("rnSectionItem").Parse(rnSectionItem))
+	template.Must(t.New("rnSection").Parse(rnSection))
+	template.Must(t.New("rnSectionBreakingChanges").Parse(rnSectionBreakingChanges))
+	return &OutputFormatterImpl{releasenoteTemplate: t}
 }
 
 // FormatReleaseNote format a release note.
diff --git a/sv/helpers_test.go b/sv/helpers_test.go
index d1c0273..69b6656 100644
--- a/sv/helpers_test.go
+++ b/sv/helpers_test.go
@@ -28,7 +28,7 @@ func releaseNote(version semver.Version, date time.Time, sections map[string]Rel
 	}
 }
 
-func rnSection(name string, items []GitCommitLog) ReleaseNoteSection {
+func newReleaseNoteSection(name string, items []GitCommitLog) ReleaseNoteSection {
 	return ReleaseNoteSection{
 		Name:  name,
 		Items: items,
diff --git a/sv/releasenotes_test.go b/sv/releasenotes_test.go
index 674f772..4ca20b6 100644
--- a/sv/releasenotes_test.go
+++ b/sv/releasenotes_test.go
@@ -23,21 +23,21 @@ func TestReleaseNoteProcessorImpl_Create(t *testing.T) {
 			version: *semver.MustParse("1.0.0"),
 			date:    date,
 			commits: []GitCommitLog{commitlog("t1", map[string]string{})},
-			want:    releaseNote(*semver.MustParse("1.0.0"), date, map[string]ReleaseNoteSection{"t1": rnSection("Tag 1", []GitCommitLog{commitlog("t1", map[string]string{})})}, nil),
+			want:    releaseNote(*semver.MustParse("1.0.0"), date, map[string]ReleaseNoteSection{"t1": newReleaseNoteSection("Tag 1", []GitCommitLog{commitlog("t1", map[string]string{})})}, nil),
 		},
 		{
 			name:    "unmapped tag",
 			version: *semver.MustParse("1.0.0"),
 			date:    date,
 			commits: []GitCommitLog{commitlog("t1", map[string]string{}), commitlog("unmapped", map[string]string{})},
-			want:    releaseNote(*semver.MustParse("1.0.0"), date, map[string]ReleaseNoteSection{"t1": rnSection("Tag 1", []GitCommitLog{commitlog("t1", map[string]string{})})}, nil),
+			want:    releaseNote(*semver.MustParse("1.0.0"), date, map[string]ReleaseNoteSection{"t1": newReleaseNoteSection("Tag 1", []GitCommitLog{commitlog("t1", map[string]string{})})}, nil),
 		},
 		{
 			name:    "breaking changes tag",
 			version: *semver.MustParse("1.0.0"),
 			date:    date,
 			commits: []GitCommitLog{commitlog("t1", map[string]string{}), commitlog("unmapped", map[string]string{"breakingchange": "breaks"})},
-			want:    releaseNote(*semver.MustParse("1.0.0"), date, map[string]ReleaseNoteSection{"t1": rnSection("Tag 1", []GitCommitLog{commitlog("t1", map[string]string{})})}, []string{"breaks"}),
+			want:    releaseNote(*semver.MustParse("1.0.0"), date, map[string]ReleaseNoteSection{"t1": newReleaseNoteSection("Tag 1", []GitCommitLog{commitlog("t1", map[string]string{})})}, []string{"breaks"}),
 		},
 	}
 	for _, tt := range tests {

From 11e40b68ee61c439d61a9a711d3e27e2c42ceb7d Mon Sep 17 00:00:00 2001
From: Beatriz Vieira <beatriznsv@gmail.com>
Date: Sun, 2 Feb 2020 00:27:03 -0300
Subject: [PATCH 6/8] refactor: add alias on release-notes and commit-log flags

---
 cmd/git-sv/main.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cmd/git-sv/main.go b/cmd/git-sv/main.go
index 2380f27..c4f1913 100644
--- a/cmd/git-sv/main.go
+++ b/cmd/git-sv/main.go
@@ -41,14 +41,14 @@ func main() {
 			Aliases: []string{"cl"},
 			Usage:   "list all commit logs since last version as jsons",
 			Action:  commitLogHandler(git, semverProcessor),
-			Flags:   []cli.Flag{&cli.StringFlag{Name: "t", Usage: "get commit log from tag"}},
+			Flags:   []cli.Flag{&cli.StringFlag{Name: "t", Aliases: []string{"tag"}, Usage: "get commit log from tag"}},
 		},
 		{
 			Name:    "release-notes",
 			Aliases: []string{"rn"},
 			Usage:   "generate release notes",
 			Action:  releaseNotesHandler(git, semverProcessor, releasenotesProcessor, outputFormatter),
-			Flags:   []cli.Flag{&cli.StringFlag{Name: "t", Usage: "get release note from tag"}},
+			Flags:   []cli.Flag{&cli.StringFlag{Name: "t", Aliases: []string{"tag"}, Usage: "get release note from tag"}},
 		},
 		{
 			Name:    "tag",

From cc57ec4c76ad58278fe9849a9e35864f09458c0d Mon Sep 17 00:00:00 2001
From: Beatriz Vieira <beatriznsv@gmail.com>
Date: Sun, 2 Feb 2020 00:49:54 -0300
Subject: [PATCH 7/8] feat: add changelog command

---
 README.md              | 17 +++++++------
 cmd/git-sv/handlers.go | 44 ++++++++++++++++++++++++++++++++
 cmd/git-sv/main.go     | 10 ++++++++
 sv/formatter.go        | 58 ++++++++++++++++++++++++++++++++----------
 4 files changed, 107 insertions(+), 22 deletions(-)

diff --git a/README.md b/README.md
index 8cf33a0..a70235a 100644
--- a/README.md
+++ b/README.md
@@ -55,14 +55,15 @@ git-sv rn -h
 
 ##### Available commands
 
-| Variable | description |
-| --------- | ---------- |
-| current-version, cv | get last released version from git |
-| next-version, nv | generate the next version based on git commit messages |
-| commit-log, cl | list all commit logs since last version as jsons |
-| release-notes, rn | generate release notes |
-| tag, tg | generate tag with version based on git commit messages |
-| help, h | Shows a list of commands or help for one command |
+| Variable | description | has options |
+| --------- | ---------- | ---------- |
+| current-version, cv | get last released version from git | :x: |
+| next-version, nv | generate the next version based on git commit messages | :x: |
+| commit-log, cl | list all commit logs since last version as jsons | :heavy_check_mark: |
+| release-notes, rn | generate release notes | :heavy_check_mark: |
+| changelog, cgl | generate changelog | :heavy_check_mark: |
+| tag, tg | generate tag with version based on git commit messages | :x: |
+| help, h | Shows a list of commands or help for one command | :x: |
 
 ## Development
 
diff --git a/cmd/git-sv/handlers.go b/cmd/git-sv/handlers.go
index ebde62b..6e2473c 100644
--- a/cmd/git-sv/handlers.go
+++ b/cmd/git-sv/handlers.go
@@ -3,6 +3,7 @@ package main
 import (
 	"encoding/json"
 	"fmt"
+	"sort"
 	"sv4git/sv"
 	"time"
 
@@ -184,3 +185,46 @@ func tagHandler(git sv.Git, semverProcessor sv.SemVerCommitsProcessor) func(c *c
 		return nil
 	}
 }
+
+func changelogHandler(git sv.Git, semverProcessor sv.SemVerCommitsProcessor, rnProcessor sv.ReleaseNoteProcessor, formatter sv.OutputFormatter) func(c *cli.Context) error {
+	return func(c *cli.Context) error {
+
+		tags, err := git.Tags()
+		if err != nil {
+			return err
+		}
+		sort.Slice(tags, func(i, j int) bool {
+			return tags[i].Date.After(tags[j].Date)
+		})
+
+		var releaseNotes []sv.ReleaseNote
+
+		size := c.Int("size")
+		all := c.Bool("all")
+		for i, tag := range tags {
+			if !all && i >= size {
+				break
+			}
+
+			previousTag := ""
+			if i+1 < len(tags) {
+				previousTag = tags[i+1].Name
+			}
+
+			commits, err := git.Log(previousTag, tag.Name)
+			if err != nil {
+				return fmt.Errorf("error getting git log from tag: %s, message: %v", tag.Name, err)
+			}
+
+			currentVer, err := sv.ToVersion(tag.Name)
+			if err != nil {
+				return fmt.Errorf("error parsing version: %s from describe, message: %v", tag.Name, err)
+			}
+			releaseNotes = append(releaseNotes, rnProcessor.Create(currentVer, tag.Date, commits))
+		}
+
+		fmt.Println(formatter.FormatChangelog(releaseNotes))
+
+		return nil
+	}
+}
diff --git a/cmd/git-sv/main.go b/cmd/git-sv/main.go
index c4f1913..ebb1449 100644
--- a/cmd/git-sv/main.go
+++ b/cmd/git-sv/main.go
@@ -50,6 +50,16 @@ func main() {
 			Action:  releaseNotesHandler(git, semverProcessor, releasenotesProcessor, outputFormatter),
 			Flags:   []cli.Flag{&cli.StringFlag{Name: "t", Aliases: []string{"tag"}, Usage: "get release note from tag"}},
 		},
+		{
+			Name:    "changelog",
+			Aliases: []string{"cgl"},
+			Usage:   "generate changelog",
+			Action:  changelogHandler(git, semverProcessor, releasenotesProcessor, outputFormatter),
+			Flags: []cli.Flag{
+				&cli.IntFlag{Name: "size", Value: 10, Aliases: []string{"n"}, Usage: "get changelog from last 'n' tags"},
+				&cli.BoolFlag{Name: "all", Usage: "ignore size parameter, get changelog for every tag"},
+			},
+		},
 		{
 			Name:    "tag",
 			Aliases: []string{"tg"},
diff --git a/sv/formatter.go b/sv/formatter.go
index ce33f16..74860db 100644
--- a/sv/formatter.go
+++ b/sv/formatter.go
@@ -13,56 +13,86 @@ type releaseNoteTemplateVariables struct {
 	BreakingChanges []string
 }
 
-const rnSectionItem = "- {{if .Scope}}**{{.Scope}}:** {{end}}{{.Subject}} ({{.Hash}}){{if .Metadata.issueid}} ({{.Metadata.issueid}}){{end}}"
-const rnSection = `{{- if .}}
+const (
+	cglTemplate = `# Changelog
+{{- range .}}
+
+{{template "rnTemplate" .}}
+---
+{{- end}}
+`
+
+	rnSectionItem = "- {{if .Scope}}**{{.Scope}}:** {{end}}{{.Subject}} ({{.Hash}}){{if .Metadata.issueid}} ({{.Metadata.issueid}}){{end}}"
+
+	rnSection = `{{- if .}}
 
 ### {{.Name}}
 {{range $k,$v := .Items}}
 {{template "rnSectionItem" $v}}
 {{- end}}
 {{- end}}`
-const rnSectionBreakingChanges = `{{- if .}}
+
+	rnSectionBreakingChanges = `{{- if .}}
 
 ### Breaking Changes
 {{range $k,$v := .}}
 - {{$v}}
 {{- end}}
 {{- end}}`
-const rnTemplate = `## v{{.Version}} ({{.Date}})
+
+	rnTemplate = `## v{{.Version}} ({{.Date}})
 {{- template "rnSection" .Sections.feat}}
 {{- template "rnSection" .Sections.fix}}
 {{- template "rnSectionBreakingChanges" .BreakingChanges}}
 `
+)
 
 // OutputFormatter output formatter interface.
 type OutputFormatter interface {
 	FormatReleaseNote(releasenote ReleaseNote) string
+	FormatChangelog(releasenotes []ReleaseNote) string
 }
 
 // OutputFormatterImpl formater for release note and changelog.
 type OutputFormatterImpl struct {
 	releasenoteTemplate *template.Template
+	changelogTemplate   *template.Template
 }
 
 // NewOutputFormatter TemplateProcessor constructor.
 func NewOutputFormatter() *OutputFormatterImpl {
-	t := template.Must(template.New("releasenotes").Parse(rnTemplate))
-	template.Must(t.New("rnSectionItem").Parse(rnSectionItem))
-	template.Must(t.New("rnSection").Parse(rnSection))
-	template.Must(t.New("rnSectionBreakingChanges").Parse(rnSectionBreakingChanges))
-	return &OutputFormatterImpl{releasenoteTemplate: t}
+	cgl := template.Must(template.New("cglTemplate").Parse(cglTemplate))
+	rn := template.Must(cgl.New("rnTemplate").Parse(rnTemplate))
+	template.Must(rn.New("rnSectionItem").Parse(rnSectionItem))
+	template.Must(rn.New("rnSection").Parse(rnSection))
+	template.Must(rn.New("rnSectionBreakingChanges").Parse(rnSectionBreakingChanges))
+	return &OutputFormatterImpl{releasenoteTemplate: rn, changelogTemplate: cgl}
 }
 
 // FormatReleaseNote format a release note.
 func (p OutputFormatterImpl) FormatReleaseNote(releasenote ReleaseNote) string {
-	templateVars := releaseNoteTemplateVariables{
+	var b bytes.Buffer
+	p.releasenoteTemplate.Execute(&b, releaseNoteVariables(releasenote))
+	return b.String()
+}
+
+// FormatChangelog format a changelog
+func (p OutputFormatterImpl) FormatChangelog(releasenotes []ReleaseNote) string {
+	var templateVars []releaseNoteTemplateVariables
+	for _, v := range releasenotes {
+		templateVars = append(templateVars, releaseNoteVariables(v))
+	}
+
+	var b bytes.Buffer
+	p.changelogTemplate.Execute(&b, templateVars)
+	return b.String()
+}
+
+func releaseNoteVariables(releasenote ReleaseNote) releaseNoteTemplateVariables {
+	return releaseNoteTemplateVariables{
 		Version:         fmt.Sprintf("%d.%d.%d", releasenote.Version.Major(), releasenote.Version.Minor(), releasenote.Version.Patch()),
 		Date:            releasenote.Date.Format("2006-01-02"),
 		Sections:        releasenote.Sections,
 		BreakingChanges: releasenote.BreakingChanges,
 	}
-
-	var b bytes.Buffer
-	p.releasenoteTemplate.Execute(&b, templateVars)
-	return b.String()
 }

From d5a5da9c7f1261c66a662c54099171d7bded999e Mon Sep 17 00:00:00 2001
From: Beatriz Vieira <beatriznsv@gmail.com>
Date: Sun, 2 Feb 2020 00:54:37 -0300
Subject: [PATCH 8/8] docs: center options on avaliable commands table

---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index a70235a..e820a02 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,7 @@ git-sv rn -h
 ##### Available commands
 
 | Variable | description | has options |
-| --------- | ---------- | ---------- |
+| --------- | ---------- | :----------: |
 | current-version, cv | get last released version from git | :x: |
 | next-version, nv | generate the next version based on git commit messages | :x: |
 | commit-log, cl | list all commit logs since last version as jsons | :heavy_check_mark: |