Merge pull request #43 from bvieira/#40

Feature: support templates for release-notes and changelog
2024-11-21 22:10:39 +00:00 · 2022-03-01 00:29:50 -03:00 · 2022-03-01 00:29:50 -03:00 · cf43b2af4e
commit cf43b2af4e
parent 6b4948b103 893f893d6c
20 changed files with 566 additions and 155 deletions
--- a/.sv4git.yml
+++ b/.sv4git.yml
@ -1,4 +1,4 @@
-version: "1.0"
+version: "1.1"

 versioning:
    update-major: []
--- a/README.md
+++ b/README.md
@ -1,6 +1,6 @@
 <p align="center">
  <h1 align="center">sv4git</h1>
-  <p align="center">semantic version for git</p>
+  <p align="center">A command line tool (CLI) to validate commit messages, bump version, create tags and generate changelogs!</p>
  <p align="center">
    <a href="https://github.com/bvieira/sv4git/releases/latest"><img alt="Release" src="https://img.shields.io/github/release/bvieira/sv4git.svg?style=for-the-badge"></a>
    <a href="https://pkg.go.dev/github.com/bvieira/sv4git/v2"><img alt="Go Reference" src="https://img.shields.io/badge/-Reference-blue?style=for-the-badge&logo=go&labelColor=gray"></a>
@ -26,11 +26,17 @@
 If you want to install from source using `go install`, just run:

 ```bash
+# keep in mind that with this, it will compile from source and won't show the version on cli -h.
 go install github.com/bvieira/sv4git/v2/cmd/git-sv@latest
+
+# if you want to add the version on the binary, run this command instead.
+SV4GIT_VERSION=$(go list -f '{{ .Version }}' -m github.com/bvieira/sv4git/v2@latest | sed 's/v//') && go install --ldflags "-X main.Version=$SV4GIT_VERSION" github.com/bvieira/sv4git/v2/cmd/git-sv@v$SV4GIT_VERSION
 ```

 ### Config

+#### YAML
+
 There are 3 config levels when using sv4git: [default](#default), [user](#user), [repository](#repository). All of them are merged considering the follow priority: **repository > user > default**.

 To see the current config, run:
@ -39,9 +45,9 @@ To see the current config, run:
 git sv cfg show
 ```

-#### Configuration Types
+##### Configuration Types

-##### Default
+###### Default

 To check the default configuration, run:

@ -49,7 +55,7 @@ To check the default configuration, run:
 git sv cfg default
 ```

-##### User
+###### User

 For user config, it is necessary to define the `SV4GIT_HOME` environment variable, eg.:

@ -64,14 +70,14 @@ And create a `config.yml` file inside it, eg.:
 └── config.yml
 ```

-##### Repository
+###### Repository

 Create a `.sv4git.yml` file on the root of your repository, eg.: [.sv4git.yml](.sv4git.yml).

-#### Configuration format
+##### Configuration format

 ```yml
-version: "1.0" #config version
+version: "1.1" #config version

 versioning: # versioning bump
    update-major: [] # Commit types used to bump major.
@ -85,14 +91,25 @@ tag:
    pattern: '%d.%d.%d' # Pattern used to create git tag.

 release-notes:
-    # Headers names for release notes markdown. To disable a section just remove the header line.
-    # It's possible to add other commit types, the release note will be created respecting the following order:
-    # feat, fix, refactor, perf, test, build, ci, chore, docs, style, breaking-change
+    # Deprecated!!! please use 'sections' instead!
+    # Headers names for release notes markdown. To disable a section just remove the header 
+    # line. It's possible to add other commit types, the release note will be created 
+    # respecting the following order: feat, fix, refactor, perf, test, build, ci, chore, docs, style, breaking-change.
    headers: 
        breaking-change: Breaking Changes
        feat: Features
        fix: Bug Fixes
    
+    sections: # Array with each section of release note. Check template section for more information.
+        - name: Features # Name used on section.
+          section-type: commits # Type of the section, supported types: commits, breaking-changes.
+          commit-types: [feat] # Commit types for commit section-type, one commit type cannot be in more than one section.
+        - name: Bug Fixes
+          section-type: commits
+          commit-types: [fix]
+        - name: Breaking Changes
+          section-type: breaking-changes
+
 branches: # Git branches config.
    prefix: ([a-z]+\/)? # Prefix used on branch name, it should be a regex group.
    suffix: (-.*)? # Suffix used on branch name, it should be a regex group.
@ -116,6 +133,95 @@ commit-message:
        regex: '[A-Z]+-[0-9]+' # Regex for issue id.
 ```

+#### Templates
+
+**sv4git** uses *go templates* to format the output for `release-notes` and `changelog`, to see how the default template is configured check [template directory](cmd/git-sv/resources/templates). On v2.7.0+, its possible to overwrite the default configuration by adding `.sv4git/templates` on your repository. The cli expects that at least 2 files exists on your directory: `changelog-md.tpl` and `releasenotes-md.tpl`.
+
+```bash
+.sv4git
+└── templates
+    ├── changelog-md.tpl
+    └── releasenotes-md.tpl
+```
+
+Everything inside `.sv4git/templates` will be loaded, so it's possible to add more files to be used as needed.
+
+##### Variables
+
+To execute the template the `releasenotes-md.tpl` will receive a single **ReleaseNote** and `changelog-md.tpl` will receive a list of **ReleaseNote** as variables.
+
+Each **ReleaseNoteSection** will be configured according with `release-notes.section` from config file. The order for each section will be maintained and the **SectionType** is defined according with `section-type` attribute as described on the table below.
+
+| section-type | ReleaseNoteSection |
+| -- | -- |
+| commits | ReleaseNoteCommitsSection |
+| breaking-changes | ReleaseNoteBreakingChangeSection |
+
+> :warning: currently only `commits` and `breaking-changes` are supported as `section-types`, using a different value for this field will make the section to be removed from the template variables.
+
+Check below the variables available:
+
+```go
+ReleaseNote
+  Release     string // 'v' followed by version if present, if not tag will be used instead.
+  Tag         string // Current tag, if available.
+  Version     *Version // Version from tag or next version according with semver.
+  Date        time.Time
+  Sections    []ReleaseNoteSection // ReleaseNoteCommitsSection or ReleaseNoteBreakingChangeSection
+  AuthorNames []string // Author names recovered from commit message (user.name from git)
+
+Version
+  Major      int
+  Minor      int
+  Patch      int
+  Prerelease string
+  Metadata   string
+  Original   string
+
+ReleaseNoteCommitsSection // SectionType == commits
+  SectionType      string
+  SectionName      string
+  Types            []string
+  Items            []GitCommitLog
+  HasMultipleTypes bool
+
+ReleaseNoteBreakingChangeSection // SectionType == breaking-changes
+  SectionType string
+  SectionName string
+  Messages    []string
+
+GitCommitLog
+  Date       string
+  Timestamp  int
+  AuthorName string
+  Hash       string
+  Message    CommitMessage
+
+CommitMessage
+  Type             string
+  Scope            string
+  Description      string
+  Body             string
+  IsBreakingChange bool
+  Metadata         map[string]string
+```
+
+##### Functions
+
+Beside the [go template functions](https://pkg.go.dev/text/template#hdr-Functions), the folowing functions are availiable to use in the templates. Check [formatter_functions.go](sv/formatter_functions.go) to see the functions implementation.
+
+###### timefmt
+
+**Usage:** timefmt time "2006-01-02"
+
+Receive a time.Time and a layout string and returns a textual representation of the time according with the layout provided. Check <https://pkg.go.dev/time#Time.Format> for more information.
+
+###### getsection
+
+**Usage:** getsection sections "Features"
+
+Receive a list of ReleaseNoteSection and a Section name and returns a section with the provided name. If no section is found, it will return `nil`.
+
 ### Running

 Run `git-sv` to get the list of available parameters:
--- a/cmd/git-sv/config.go
+++ b/cmd/git-sv/config.go
@ -70,15 +70,21 @@ func readConfig(filepath string) (Config, error) {
 func defaultConfig() Config {
 	skipDetached := false
 	return Config{
-		Version: "1.0",
+		Version: "1.1",
 		Versioning: sv.VersioningConfig{
 			UpdateMajor:   []string{},
 			UpdateMinor:   []string{"feat"},
 			UpdatePatch:   []string{"build", "ci", "chore", "docs", "fix", "perf", "refactor", "style", "test"},
 			IgnoreUnknown: false,
 		},
-		Tag:          sv.TagConfig{Pattern: "%d.%d.%d"},
-		ReleaseNotes: sv.ReleaseNotesConfig{Headers: map[string]string{"fix": "Bug Fixes", "feat": "Features", "breaking-change": "Breaking Changes"}},
+		Tag: sv.TagConfig{Pattern: "%d.%d.%d"},
+		ReleaseNotes: sv.ReleaseNotesConfig{
+			Sections: []sv.ReleaseNotesSectionConfig{
+				{Name: "Features", SectionType: sv.ReleaseNotesSectionTypeCommits, CommitTypes: []string{"feat"}},
+				{Name: "Bug Fixes", SectionType: sv.ReleaseNotesSectionTypeCommits, CommitTypes: []string{"fix"}},
+				{Name: "Breaking Changes", SectionType: sv.ReleaseNotesSectionTypeBreakingChanges},
+			},
+		},
 		Branches: sv.BranchesConfig{
 			Prefix:       "([a-z]+\\/)?",
 			Suffix:       "(-.*)?",
@ -129,3 +135,35 @@ func (t *mergeTransformer) Transformer(typ reflect.Type) func(dst, src reflect.V
 	}
 	return nil
 }
+
+func migrateConfig(cfg Config, filename string) Config {
+	if cfg.ReleaseNotes.Headers == nil {
+		return cfg
+	}
+	warnf("config 'release-notes.headers' on %s is deprecated, please use 'sections' instead!", filename)
+
+	return Config{
+		Version:    cfg.Version,
+		Versioning: cfg.Versioning,
+		Tag:        cfg.Tag,
+		ReleaseNotes: sv.ReleaseNotesConfig{
+			Sections: migrateReleaseNotesConfig(cfg.ReleaseNotes.Headers),
+		},
+		Branches:      cfg.Branches,
+		CommitMessage: cfg.CommitMessage,
+	}
+}
+
+func migrateReleaseNotesConfig(headers map[string]string) []sv.ReleaseNotesSectionConfig {
+	order := []string{"feat", "fix", "refactor", "perf", "test", "build", "ci", "chore", "docs", "style"}
+	var sections []sv.ReleaseNotesSectionConfig
+	for _, key := range order {
+		if name, exists := headers[key]; exists {
+			sections = append(sections, sv.ReleaseNotesSectionConfig{Name: name, SectionType: sv.ReleaseNotesSectionTypeCommits, CommitTypes: []string{key}})
+		}
+	}
+	if name, exists := headers["breaking-change"]; exists {
+		sections = append(sections, sv.ReleaseNotesSectionConfig{Name: name, SectionType: sv.ReleaseNotesSectionTypeBreakingChanges})
+	}
+	return sections
+}
--- a/cmd/git-sv/log.go
+++ b/cmd/git-sv/log.go
@ -1,7 +1,10 @@
 package main

-import "fmt"
+import (
+	"fmt"
+	"os"
+)

 func warnf(format string, values ...interface{}) {
-	fmt.Printf("WARN: "+format+"\n", values...)
+	fmt.Fprintf(os.Stderr, "WARN: "+format+"\n", values...)
 }
--- a/cmd/git-sv/main.go
+++ b/cmd/git-sv/main.go
@ -1,6 +1,8 @@
 package main

 import (
+	"embed"
+	"io/fs"
 	"log"
 	"os"
 	"path/filepath"
@ -15,17 +17,36 @@ var Version = "source"
 const (
 	configFilename     = "config.yml"
 	repoConfigFilename = ".sv4git.yml"
+	configDir          = ".sv4git"
 )

+var (
+	//go:embed resources/templates/*.tpl
+	defaultTemplatesFS embed.FS
+)
+
+func templateFS(filepath string) fs.FS {
+	if _, err := os.Stat(filepath); err != nil {
+		defaultTemplatesFS, _ := fs.Sub(defaultTemplatesFS, "resources/templates")
+		return defaultTemplatesFS
+	}
+	return os.DirFS(filepath)
+}
+
 func main() {
 	log.SetFlags(0)

-	cfg := loadCfg()
+	repoPath, rerr := getRepoPath()
+	if rerr != nil {
+		log.Fatal("failed to discovery repository top level, error: ", rerr)
+	}
+
+	cfg := loadCfg(repoPath)
 	messageProcessor := sv.NewMessageProcessor(cfg.CommitMessage, cfg.Branches)
 	git := sv.NewGit(messageProcessor, cfg.Tag)
 	semverProcessor := sv.NewSemVerCommitsProcessor(cfg.Versioning, cfg.CommitMessage)
 	releasenotesProcessor := sv.NewReleaseNoteProcessor(cfg.ReleaseNotes)
-	outputFormatter := sv.NewOutputFormatter()
+	outputFormatter := sv.NewOutputFormatter(templateFS(filepath.Join(repoPath, configDir, "templates")))

 	app := cli.NewApp()
 	app.Name = "sv"
@ -145,26 +166,22 @@ func main() {
 	}
 }

-func loadCfg() Config {
-	envCfg := loadEnvConfig()
-
+func loadCfg(repoPath string) Config {
 	cfg := defaultConfig()

+	envCfg := loadEnvConfig()
 	if envCfg.Home != "" {
-		if homeCfg, err := readConfig(filepath.Join(envCfg.Home, configFilename)); err == nil {
-			if merr := merge(&cfg, homeCfg); merr != nil {
+		homeCfgFilepath := filepath.Join(envCfg.Home, configFilename)
+		if homeCfg, err := readConfig(homeCfgFilepath); err == nil {
+			if merr := merge(&cfg, migrateConfig(homeCfg, homeCfgFilepath)); merr != nil {
 				log.Fatal("failed to merge user config, error: ", merr)
 			}
 		}
 	}

-	repoPath, rerr := getRepoPath()
-	if rerr != nil {
-		log.Fatal("failed to get repository path, error: ", rerr)
-	}
-
-	if repoCfg, err := readConfig(filepath.Join(repoPath, repoConfigFilename)); err == nil {
-		if merr := merge(&cfg, repoCfg); merr != nil {
+	repoCfgFilepath := filepath.Join(repoPath, repoConfigFilename)
+	if repoCfg, err := readConfig(repoCfgFilepath); err == nil {
+		if merr := merge(&cfg, migrateConfig(repoCfg, repoCfgFilepath)); merr != nil {
 			log.Fatal("failed to merge repo config, error: ", merr)
 		}
 		if len(repoCfg.ReleaseNotes.Headers) > 0 { // mergo is merging maps, headers will be overwritten
--- a/cmd/git-sv/resources/templates/changelog-md.tpl
+++ b/cmd/git-sv/resources/templates/changelog-md.tpl
@ -0,0 +1,6 @@
+# Changelog
+{{- range .}}
+
+{{template "releasenotes-md.tpl" .}}
+---
+{{- end}}
--- a/cmd/git-sv/resources/templates/releasenotes-md.tpl
+++ b/cmd/git-sv/resources/templates/releasenotes-md.tpl
@ -0,0 +1,8 @@
+## {{if .Release}}{{.Release}}{{end}}{{if and (not .Date.IsZero) .Release}} ({{end}}{{timefmt .Date "2006-01-02"}}{{if and (not .Date.IsZero) .Release}}){{end}}
+{{- range $section := .Sections }}
+{{- if (eq $section.SectionType "commits") }}
+{{- template "rn-md-section-commits.tpl" $section }}
+{{- else if (eq $section.SectionType "breaking-changes")}}
+{{- template "rn-md-section-breaking-changes.tpl" $section }}
+{{- end}}
+{{- end}}
--- a/cmd/git-sv/resources/templates/rn-md-section-breaking-changes.tpl
+++ b/cmd/git-sv/resources/templates/rn-md-section-breaking-changes.tpl
@ -0,0 +1,7 @@
+{{- if ne .Name ""}}
+
+### {{.Name}}
+{{range $k,$v := .Messages}}
+- {{$v}}
+{{- end}}
+{{- end}}
--- a/cmd/git-sv/resources/templates/rn-md-section-commits.tpl
+++ b/cmd/git-sv/resources/templates/rn-md-section-commits.tpl
@ -0,0 +1,7 @@
+{{- if .}}{{- if ne .SectionName ""}}
+
+### {{.SectionName}}
+{{range $k,$v := .Items}}
+- {{if $v.Message.Scope}}**{{$v.Message.Scope}}:** {{end}}{{$v.Message.Description}} ({{$v.Hash}}){{if $v.Message.Metadata.issue}} ({{$v.Message.Metadata.issue}}){{end}}
+{{- end}}
+{{- end}}{{- end}}
--- a/cmd/git-sv/resources_test.go
+++ b/cmd/git-sv/resources_test.go
@ -0,0 +1,24 @@
+package main
+
+import (
+	"testing"
+)
+
+func Test_checkTemplatesFiles(t *testing.T) {
+	tests := []string{
+		"resources/templates/changelog-md.tpl",
+		"resources/templates/releasenotes-md.tpl",
+	}
+	for _, tt := range tests {
+		t.Run(tt, func(t *testing.T) {
+			got, err := defaultTemplatesFS.ReadFile(tt)
+			if err != nil {
+				t.Errorf("missing template error = %v", err)
+				return
+			}
+			if len(got) <= 0 {
+				t.Errorf("empty template")
+			}
+		})
+	}
+}
--- a/sv/config.go
+++ b/sv/config.go
@ -68,5 +68,29 @@ type TagConfig struct {

 // ReleaseNotesConfig release notes preferences.
 type ReleaseNotesConfig struct {
-	Headers map[string]string `yaml:"headers"`
+	Headers  map[string]string           `yaml:"headers,omitempty"`
+	Sections []ReleaseNotesSectionConfig `yaml:"sections"`
 }
+
+func (cfg ReleaseNotesConfig) sectionConfig(sectionType string) *ReleaseNotesSectionConfig {
+	for _, sectionCfg := range cfg.Sections {
+		if sectionCfg.SectionType == sectionType {
+			return &sectionCfg
+		}
+	}
+	return nil
+}
+
+// ReleaseNotesSectionConfig preferences for a single section on release notes.
+type ReleaseNotesSectionConfig struct {
+	Name        string   `yaml:"name"`
+	SectionType string   `yaml:"section-type"`
+	CommitTypes []string `yaml:"commit-types,flow,omitempty"`
+}
+
+const (
+	// ReleaseNotesSectionTypeCommits ReleaseNotesSectionConfig.SectionType value.
+	ReleaseNotesSectionTypeCommits = "commits"
+	// ReleaseNotesSectionTypeBreakingChanges ReleaseNotesSectionConfig.SectionType value.
+	ReleaseNotesSectionTypeBreakingChanges = "breaking-changes"
+)
--- a/sv/formatter.go
+++ b/sv/formatter.go
@ -2,53 +2,23 @@ package sv

 import (
 	"bytes"
+	"io/fs"
+	"sort"
 	"text/template"
+	"time"
+
+	"github.com/Masterminds/semver/v3"
 )

 type releaseNoteTemplateVariables struct {
-	Release         string
-	Date            string
-	Sections        map[string]ReleaseNoteSection
-	Order           []string
-	BreakingChanges BreakingChangeSection
+	Release     string
+	Tag         string
+	Version     *semver.Version
+	Date        time.Time
+	Sections    []ReleaseNoteSection
+	AuthorNames []string
 }

-const (
-	cglTemplate = `# Changelog
-{{- range .}}
-
-{{template "rnTemplate" .}}
---
-{{- end}}
-`
-
-	rnSectionItem = "- {{if .Message.Scope}}**{{.Message.Scope}}:** {{end}}{{.Message.Description}} ({{.Hash}}){{if .Message.Metadata.issue}} ({{.Message.Metadata.issue}}){{end}}"
-
-	rnSection = `{{- if .}}{{- if ne .Name ""}}
-
-### {{.Name}}
-{{range $k,$v := .Items}}
-{{template "rnSectionItem" $v}}
-{{- end}}
-{{- end}}{{- end}}`
-
-	rnSectionBreakingChanges = `{{- if ne .Name ""}}
-
-### {{.Name}}
-{{range $k,$v := .Messages}}
- {{$v}}
-{{- end}}
-{{- end}}`
-
-	rnTemplate = `## {{if .Release}}{{.Release}}{{end}}{{if and .Date .Release}} ({{end}}{{.Date}}{{if and .Date .Release}}){{end}}
-{{- $sections := .Sections }}
-{{- range $key := .Order }}
-{{- template "rnSection" (index $sections $key) }}
-{{- end}}
-{{- template "rnSectionBreakingChanges" .BreakingChanges}}
-`
-)
-
 // OutputFormatter output formatter interface.
 type OutputFormatter interface {
 	FormatReleaseNote(releasenote ReleaseNote) (string, error)
@ -57,24 +27,23 @@ type OutputFormatter interface {

 // OutputFormatterImpl formater for release note and changelog.
 type OutputFormatterImpl struct {
-	releasenoteTemplate *template.Template
-	changelogTemplate   *template.Template
+	templates *template.Template
 }

 // NewOutputFormatter TemplateProcessor constructor.
-func NewOutputFormatter() *OutputFormatterImpl {
-	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}
+func NewOutputFormatter(templatesFS fs.FS) *OutputFormatterImpl {
+	templateFNs := map[string]interface{}{
+		"timefmt":    timeFormat,
+		"getsection": getSection,
+	}
+	tpls := template.Must(template.New("templates").Funcs(templateFNs).ParseFS(templatesFS, "*"))
+	return &OutputFormatterImpl{templates: tpls}
 }

 // FormatReleaseNote format a release note.
 func (p OutputFormatterImpl) FormatReleaseNote(releasenote ReleaseNote) (string, error) {
 	var b bytes.Buffer
-	if err := p.releasenoteTemplate.Execute(&b, releaseNoteVariables(releasenote)); err != nil {
+	if err := p.templates.ExecuteTemplate(&b, "releasenotes-md.tpl", releaseNoteVariables(releasenote)); err != nil {
 		return "", err
 	}
 	return b.String(), nil
@ -88,29 +57,34 @@ func (p OutputFormatterImpl) FormatChangelog(releasenotes []ReleaseNote) (string
 	}

 	var b bytes.Buffer
-	if err := p.changelogTemplate.Execute(&b, templateVars); err != nil {
+	if err := p.templates.ExecuteTemplate(&b, "changelog-md.tpl", templateVars); err != nil {
 		return "", err
 	}
 	return b.String(), nil
 }

 func releaseNoteVariables(releasenote ReleaseNote) releaseNoteTemplateVariables {
-	date := ""
-	if !releasenote.Date.IsZero() {
-		date = releasenote.Date.Format("2006-01-02")
-	}
-
-	release := ""
+	release := releasenote.Tag
 	if releasenote.Version != nil {
 		release = "v" + releasenote.Version.String()
-	} else if releasenote.Tag != "" {
-		release = releasenote.Tag
 	}
 	return releaseNoteTemplateVariables{
-		Release:         release,
-		Date:            date,
-		Sections:        releasenote.Sections,
-		Order:           []string{"feat", "fix", "refactor", "perf", "test", "build", "ci", "chore", "docs", "style"},
-		BreakingChanges: releasenote.BreakingChanges,
+		Release:     release,
+		Tag:         releasenote.Tag,
+		Version:     releasenote.Version,
+		Date:        releasenote.Date,
+		Sections:    releasenote.Sections,
+		AuthorNames: toSortedArray(releasenote.AuthorsNames),
 	}
 }
+
+func toSortedArray(input map[string]struct{}) []string {
+	result := make([]string, len(input))
+	i := 0
+	for k := range input {
+		result[i] = k
+		i++
+	}
+	sort.Strings(result)
+	return result
+}
--- a/sv/formatter_functions.go
+++ b/sv/formatter_functions.go
@ -0,0 +1,19 @@
+package sv
+
+import "time"
+
+func timeFormat(t time.Time, format string) string {
+	if t.IsZero() {
+		return ""
+	}
+	return t.Format(format)
+}
+
+func getSection(sections []ReleaseNoteSection, name string) ReleaseNoteSection {
+	for _, section := range sections {
+		if section.SectionName() == name {
+			return section
+		}
+	}
+	return nil
+}
--- a/sv/formatter_functions_test.go
+++ b/sv/formatter_functions_test.go
@ -0,0 +1,45 @@
+package sv
+
+import (
+	"reflect"
+	"testing"
+	"time"
+)
+
+func Test_timeFormat(t *testing.T) {
+	tests := []struct {
+		name   string
+		time   time.Time
+		format string
+		want   string
+	}{
+		{"valid time", time.Date(2022, 1, 1, 0, 0, 0, 0, time.UTC), "2006-01-02", "2022-01-01"},
+		{"empty time", time.Time{}, "2006-01-02", ""},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := timeFormat(tt.time, tt.format); got != tt.want {
+				t.Errorf("timeFormat() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func Test_getSection(t *testing.T) {
+	tests := []struct {
+		name        string
+		sections    []ReleaseNoteSection
+		sectionName string
+		want        ReleaseNoteSection
+	}{
+		{"existing section", []ReleaseNoteSection{ReleaseNoteCommitsSection{Name: "section 0"}, ReleaseNoteCommitsSection{Name: "section 1"}, ReleaseNoteCommitsSection{Name: "section 2"}}, "section 1", ReleaseNoteCommitsSection{Name: "section 1"}},
+		{"nonexisting section", []ReleaseNoteSection{ReleaseNoteCommitsSection{Name: "section 0"}, ReleaseNoteCommitsSection{Name: "section 1"}, ReleaseNoteCommitsSection{Name: "section 2"}}, "section 10", nil},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := getSection(tt.sections, tt.sectionName); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("getSection() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
--- a/sv/formatter_test.go
+++ b/sv/formatter_test.go
@ -1,12 +1,16 @@
 package sv

 import (
+	"bytes"
+	"os"
 	"testing"
 	"time"

 	"github.com/Masterminds/semver/v3"
 )

+var templatesFS = os.DirFS("../cmd/git-sv/resources/templates")
+
 var dateChangelog = `## v1.0.0 (2020-05-01)
 `

@ -55,7 +59,7 @@ func TestOutputFormatterImpl_FormatReleaseNote(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			got, err := NewOutputFormatter().FormatReleaseNote(tt.input)
+			got, err := NewOutputFormatter(templatesFS).FormatReleaseNote(tt.input)
 			if got != tt.want {
 				t.Errorf("OutputFormatterImpl.FormatReleaseNote() = %v, want %v", got, tt.want)
 			}
@ -78,10 +82,57 @@ func emptyReleaseNote(tag string, date time.Time) ReleaseNote {

 func fullReleaseNote(tag string, date time.Time) ReleaseNote {
 	v, _ := semver.NewVersion(tag)
-	sections := map[string]ReleaseNoteSection{
-		"build": newReleaseNoteSection("Build", []GitCommitLog{commitlog("build", map[string]string{})}),
-		"feat":  newReleaseNoteSection("Features", []GitCommitLog{commitlog("feat", map[string]string{})}),
-		"fix":   newReleaseNoteSection("Bug Fixes", []GitCommitLog{commitlog("fix", map[string]string{})}),
+	sections := []ReleaseNoteSection{
+		newReleaseNoteCommitsSection("Features", []string{"feat"}, []GitCommitLog{commitlog("feat", map[string]string{}, "a")}),
+		newReleaseNoteCommitsSection("Bug Fixes", []string{"fix"}, []GitCommitLog{commitlog("fix", map[string]string{}, "a")}),
+		newReleaseNoteCommitsSection("Build", []string{"build"}, []GitCommitLog{commitlog("build", map[string]string{}, "a")}),
+		ReleaseNoteBreakingChangeSection{"Breaking Changes", []string{"break change message"}},
 	}
-	return releaseNote(v, tag, date, sections, []string{"break change message"})
+	return releaseNote(v, tag, date, sections, map[string]struct{}{"a": {}})
+}
+
+func Test_checkTemplatesExecution(t *testing.T) {
+	tpls := NewOutputFormatter(templatesFS).templates
+	tests := []struct {
+		template  string
+		variables interface{}
+	}{
+		{"changelog-md.tpl", changelogVariables("v1.0.0", "v1.0.1")},
+		{"releasenotes-md.tpl", releaseNotesVariables("v1.0.0")},
+	}
+	for _, tt := range tests {
+		t.Run(tt.template, func(t *testing.T) {
+			var b bytes.Buffer
+			err := tpls.ExecuteTemplate(&b, tt.template, tt.variables)
+			if err != nil {
+				t.Errorf("invalid template err = %v", err)
+				return
+			}
+			if len(b.Bytes()) <= 0 {
+				t.Errorf("empty template")
+			}
+		})
+	}
+}
+
+func releaseNotesVariables(release string) releaseNoteTemplateVariables {
+	return releaseNoteTemplateVariables{
+		Release: release,
+		Date:    time.Date(2006, 1, 02, 0, 0, 0, 0, time.UTC),
+		Sections: []ReleaseNoteSection{
+			newReleaseNoteCommitsSection("Features", []string{"feat"}, []GitCommitLog{commitlog("feat", map[string]string{}, "a")}),
+			newReleaseNoteCommitsSection("Bug Fixes", []string{"fix"}, []GitCommitLog{commitlog("fix", map[string]string{}, "a")}),
+			newReleaseNoteCommitsSection("Build", []string{"build"}, []GitCommitLog{commitlog("build", map[string]string{}, "a")}),
+			ReleaseNoteBreakingChangeSection{"Breaking Changes", []string{"break change message"}},
+		},
+	}
+}
+
+func changelogVariables(releases ...string) []releaseNoteTemplateVariables {
+	var variables []releaseNoteTemplateVariables
+	for _, r := range releases {
+		variables = append(variables, releaseNotesVariables(r))
+	}
+	return variables
+
 }
--- a/sv/git.go
+++ b/sv/git.go
@ -7,6 +7,7 @@ import (
 	"fmt"
 	"os"
 	"os/exec"
+	"strconv"
 	"strings"
 	"time"

@ -31,9 +32,11 @@ type Git interface {

 // GitCommitLog description of a single commit log.
 type GitCommitLog struct {
-	Date    string        `json:"date,omitempty"`
-	Hash    string        `json:"hash,omitempty"`
-	Message CommitMessage `json:"message,omitempty"`
+	Date       string        `json:"date,omitempty"`
+	Timestamp  int           `json:"timestamp,omitempty"`
+	AuthorName string        `json:"authorName,omitempty"`
+	Hash       string        `json:"hash,omitempty"`
+	Message    CommitMessage `json:"message,omitempty"`
 }

 // GitTag git tag info.
@ -90,7 +93,7 @@ func (GitImpl) LastTag() string {

 // Log return git log.
 func (g GitImpl) Log(lr LogRange) ([]GitCommitLog, error) {
-	format := "--pretty=format:\"%ad" + logSeparator + "%h" + logSeparator + "%s" + logSeparator + "%b" + endLine + "\""
+	format := "--pretty=format:\"%ad" + logSeparator + "%at" + logSeparator + "%cN" + logSeparator + "%h" + logSeparator + "%s" + logSeparator + "%b" + endLine + "\""
 	params := []string{"log", "--date=short", format}

 	if lr.start != "" || lr.end != "" {
@ -200,10 +203,13 @@ func parseLogOutput(messageProcessor MessageProcessor, log string) []GitCommitLo
 func parseCommitLog(messageProcessor MessageProcessor, commit string) GitCommitLog {
 	content := strings.Split(strings.Trim(commit, "\""), logSeparator)

+	timestamp, _ := strconv.Atoi(content[1])
 	return GitCommitLog{
-		Date:    content[0],
-		Hash:    content[1],
-		Message: messageProcessor.Parse(content[2], content[3]),
+		Date:       content[0],
+		Timestamp:  timestamp,
+		AuthorName: content[2],
+		Hash:       content[3],
+		Message:    messageProcessor.Parse(content[4], content[5]),
 	}
 }

--- a/sv/helpers_test.go
+++ b/sv/helpers_test.go
@ -11,7 +11,7 @@ func version(v string) *semver.Version {
 	return r
 }

-func commitlog(ctype string, metadata map[string]string) GitCommitLog {
+func commitlog(ctype string, metadata map[string]string, author string) GitCommitLog {
 	breaking := false
 	if _, found := metadata[breakingChangeMetadataKey]; found {
 		breaking = true
@ -23,26 +23,24 @@ func commitlog(ctype string, metadata map[string]string) GitCommitLog {
 			IsBreakingChange: breaking,
 			Metadata:         metadata,
 		},
+		AuthorName: author,
 	}
 }

-func releaseNote(version *semver.Version, tag string, date time.Time, sections map[string]ReleaseNoteSection, breakingChanges []string) ReleaseNote {
-	var bchanges BreakingChangeSection
-	if len(breakingChanges) > 0 {
-		bchanges = BreakingChangeSection{Name: "Breaking Changes", Messages: breakingChanges}
-	}
+func releaseNote(version *semver.Version, tag string, date time.Time, sections []ReleaseNoteSection, authorsNames map[string]struct{}) ReleaseNote {
 	return ReleaseNote{
-		Version:         version,
-		Tag:             tag,
-		Date:            date.Truncate(time.Minute),
-		Sections:        sections,
-		BreakingChanges: bchanges,
+		Version:      version,
+		Tag:          tag,
+		Date:         date.Truncate(time.Minute),
+		Sections:     sections,
+		AuthorsNames: authorsNames,
 	}
 }

-func newReleaseNoteSection(name string, items []GitCommitLog) ReleaseNoteSection {
-	return ReleaseNoteSection{
+func newReleaseNoteCommitsSection(name string, types []string, items []GitCommitLog) ReleaseNoteCommitsSection {
+	return ReleaseNoteCommitsSection{
 		Name:  name,
+		Types: types,
 		Items: items,
 	}
 }
--- a/sv/releasenotes.go
+++ b/sv/releasenotes.go
@ -23,16 +23,20 @@ func NewReleaseNoteProcessor(cfg ReleaseNotesConfig) *ReleaseNoteProcessorImpl {

 // Create create a release note based on commits.
 func (p ReleaseNoteProcessorImpl) Create(version *semver.Version, tag string, date time.Time, commits []GitCommitLog) ReleaseNote {
-	sections := make(map[string]ReleaseNoteSection)
+	mapping := commitSectionMapping(p.cfg.Sections)
+
+	sections := make(map[string]ReleaseNoteCommitsSection)
+	authors := make(map[string]struct{})
 	var breakingChanges []string
 	for _, commit := range commits {
-		if name, exists := p.cfg.Headers[commit.Message.Type]; exists {
-			section, sexists := sections[commit.Message.Type]
+		authors[commit.AuthorName] = struct{}{}
+		if sectionCfg, exists := mapping[commit.Message.Type]; exists {
+			section, sexists := sections[sectionCfg.Name]
 			if !sexists {
-				section = ReleaseNoteSection{Name: name}
+				section = ReleaseNoteCommitsSection{Name: sectionCfg.Name, Types: sectionCfg.CommitTypes}
 			}
 			section.Items = append(section.Items, commit)
-			sections[commit.Message.Type] = section
+			sections[sectionCfg.Name] = section
 		}
 		if commit.Message.BreakingMessage() != "" {
 			// TODO: if no message found, should use description instead?
@ -40,30 +44,96 @@ func (p ReleaseNoteProcessorImpl) Create(version *semver.Version, tag string, da
 		}
 	}

-	var breakingChangeSection BreakingChangeSection
-	if name, exists := p.cfg.Headers[breakingChangeMetadataKey]; exists && len(breakingChanges) > 0 {
-		breakingChangeSection = BreakingChangeSection{Name: name, Messages: breakingChanges}
+	var breakingChangeSection ReleaseNoteBreakingChangeSection
+	if bcCfg := p.cfg.sectionConfig(ReleaseNotesSectionTypeBreakingChanges); bcCfg != nil && len(breakingChanges) > 0 {
+		breakingChangeSection = ReleaseNoteBreakingChangeSection{Name: bcCfg.Name, Messages: breakingChanges}
 	}
-	return ReleaseNote{Version: version, Tag: tag, Date: date.Truncate(time.Minute), Sections: sections, BreakingChanges: breakingChangeSection}
+	return ReleaseNote{Version: version, Tag: tag, Date: date.Truncate(time.Minute), Sections: p.toReleaseNoteSections(sections, breakingChangeSection), AuthorsNames: authors}
+}
+
+func (p ReleaseNoteProcessorImpl) toReleaseNoteSections(commitSections map[string]ReleaseNoteCommitsSection, breakingChange ReleaseNoteBreakingChangeSection) []ReleaseNoteSection {
+	hasBreaking := 0
+	if breakingChange.Name != "" {
+		hasBreaking = 1
+	}
+
+	sections := make([]ReleaseNoteSection, len(commitSections)+hasBreaking)
+	i := 0
+	for _, cfg := range p.cfg.Sections {
+		if cfg.SectionType == ReleaseNotesSectionTypeBreakingChanges && hasBreaking > 0 {
+			sections[i] = breakingChange
+			i++
+		}
+		if s, exists := commitSections[cfg.Name]; cfg.SectionType == ReleaseNotesSectionTypeCommits && exists {
+			sections[i] = s
+			i++
+		}
+	}
+
+	return sections
+}
+
+func commitSectionMapping(sections []ReleaseNotesSectionConfig) map[string]ReleaseNotesSectionConfig {
+	mapping := make(map[string]ReleaseNotesSectionConfig)
+	for _, section := range sections {
+		if section.SectionType == ReleaseNotesSectionTypeCommits {
+			for _, commitType := range section.CommitTypes {
+				mapping[commitType] = section
+			}
+		}
+	}
+	return mapping
 }

 // ReleaseNote release note.
 type ReleaseNote struct {
-	Version         *semver.Version
-	Tag             string
-	Date            time.Time
-	Sections        map[string]ReleaseNoteSection
-	BreakingChanges BreakingChangeSection
+	Version      *semver.Version
+	Tag          string
+	Date         time.Time
+	Sections     []ReleaseNoteSection
+	AuthorsNames map[string]struct{}
 }

-// BreakingChangeSection breaking change section.
-type BreakingChangeSection struct {
+// ReleaseNoteSection section in release notes.
+type ReleaseNoteSection interface {
+	SectionType() string
+	SectionName() string
+}
+
+// ReleaseNoteBreakingChangeSection breaking change section.
+type ReleaseNoteBreakingChangeSection struct {
 	Name     string
 	Messages []string
 }

-// ReleaseNoteSection release note section.
-type ReleaseNoteSection struct {
+// SectionType section type.
+func (ReleaseNoteBreakingChangeSection) SectionType() string {
+	return ReleaseNotesSectionTypeBreakingChanges
+}
+
+// SectionName section name.
+func (s ReleaseNoteBreakingChangeSection) SectionName() string {
+	return s.Name
+}
+
+// ReleaseNoteCommitsSection release note section.
+type ReleaseNoteCommitsSection struct {
 	Name  string
+	Types []string
 	Items []GitCommitLog
 }
+
+// SectionType section type.
+func (ReleaseNoteCommitsSection) SectionType() string {
+	return ReleaseNotesSectionTypeCommits
+}
+
+// SectionName section name.
+func (s ReleaseNoteCommitsSection) SectionName() string {
+	return s.Name
+}
+
+// HasMultipleTypes return true if has more than one commit type.
+func (s ReleaseNoteCommitsSection) HasMultipleTypes() bool {
+	return len(s.Types) > 1
+}
--- a/sv/releasenotes_test.go
+++ b/sv/releasenotes_test.go
@ -24,29 +24,37 @@ func TestReleaseNoteProcessorImpl_Create(t *testing.T) {
 			version: semver.MustParse("1.0.0"),
 			tag:     "v1.0.0",
 			date:    date,
-			commits: []GitCommitLog{commitlog("t1", map[string]string{})},
-			want:    releaseNote(semver.MustParse("1.0.0"), "v1.0.0", date, map[string]ReleaseNoteSection{"t1": newReleaseNoteSection("Tag 1", []GitCommitLog{commitlog("t1", map[string]string{})})}, nil),
+			commits: []GitCommitLog{commitlog("t1", map[string]string{}, "a")},
+			want:    releaseNote(semver.MustParse("1.0.0"), "v1.0.0", date, []ReleaseNoteSection{newReleaseNoteCommitsSection("Tag 1", []string{"t1"}, []GitCommitLog{commitlog("t1", map[string]string{}, "a")})}, map[string]struct{}{"a": {}}),
 		},
 		{
 			name:    "unmapped tag",
 			version: semver.MustParse("1.0.0"),
 			tag:     "v1.0.0",
 			date:    date,
-			commits: []GitCommitLog{commitlog("t1", map[string]string{}), commitlog("unmapped", map[string]string{})},
-			want:    releaseNote(semver.MustParse("1.0.0"), "v1.0.0", date, map[string]ReleaseNoteSection{"t1": newReleaseNoteSection("Tag 1", []GitCommitLog{commitlog("t1", map[string]string{})})}, nil),
+			commits: []GitCommitLog{commitlog("t1", map[string]string{}, "a"), commitlog("unmapped", map[string]string{}, "a")},
+			want:    releaseNote(semver.MustParse("1.0.0"), "v1.0.0", date, []ReleaseNoteSection{newReleaseNoteCommitsSection("Tag 1", []string{"t1"}, []GitCommitLog{commitlog("t1", map[string]string{}, "a")})}, map[string]struct{}{"a": {}}),
 		},
 		{
 			name:    "breaking changes tag",
 			version: semver.MustParse("1.0.0"),
 			tag:     "v1.0.0",
 			date:    date,
-			commits: []GitCommitLog{commitlog("t1", map[string]string{}), commitlog("unmapped", map[string]string{"breaking-change": "breaks"})},
-			want:    releaseNote(semver.MustParse("1.0.0"), "v1.0.0", date, map[string]ReleaseNoteSection{"t1": newReleaseNoteSection("Tag 1", []GitCommitLog{commitlog("t1", map[string]string{})})}, []string{"breaks"}),
+			commits: []GitCommitLog{commitlog("t1", map[string]string{}, "a"), commitlog("unmapped", map[string]string{"breaking-change": "breaks"}, "a")},
+			want:    releaseNote(semver.MustParse("1.0.0"), "v1.0.0", date, []ReleaseNoteSection{newReleaseNoteCommitsSection("Tag 1", []string{"t1"}, []GitCommitLog{commitlog("t1", map[string]string{}, "a")}), ReleaseNoteBreakingChangeSection{Name: "Breaking Changes", Messages: []string{"breaks"}}}, map[string]struct{}{"a": {}}),
+		},
+		{
+			name:    "multiple authors",
+			version: semver.MustParse("1.0.0"),
+			tag:     "v1.0.0",
+			date:    date,
+			commits: []GitCommitLog{commitlog("t1", map[string]string{}, "author3"), commitlog("t1", map[string]string{}, "author2"), commitlog("t1", map[string]string{}, "author1")},
+			want:    releaseNote(semver.MustParse("1.0.0"), "v1.0.0", date, []ReleaseNoteSection{newReleaseNoteCommitsSection("Tag 1", []string{"t1"}, []GitCommitLog{commitlog("t1", map[string]string{}, "author3"), commitlog("t1", map[string]string{}, "author2"), commitlog("t1", map[string]string{}, "author1")})}, map[string]struct{}{"author1": {}, "author2": {}, "author3": {}}),
 		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			p := NewReleaseNoteProcessor(ReleaseNotesConfig{Headers: map[string]string{"t1": "Tag 1", "t2": "Tag 2", "breaking-change": "Breaking Changes"}})
+			p := NewReleaseNoteProcessor(ReleaseNotesConfig{Sections: []ReleaseNotesSectionConfig{{Name: "Tag 1", SectionType: "commits", CommitTypes: []string{"t1"}}, {Name: "Tag 2", SectionType: "commits", CommitTypes: []string{"t2"}}, {Name: "Breaking Changes", SectionType: "breaking-changes"}}})
 			if got := p.Create(tt.version, tt.tag, tt.date, tt.commits); !reflect.DeepEqual(got, tt.want) {
 				t.Errorf("ReleaseNoteProcessorImpl.Create() = %v, want %v", got, tt.want)
 			}
--- a/sv/semver_test.go
+++ b/sv/semver_test.go
@ -18,14 +18,14 @@ func TestSemVerCommitsProcessorImpl_NextVersion(t *testing.T) {
 	}{
 		{"no update", true, version("0.0.0"), []GitCommitLog{}, version("0.0.0"), false},
 		{"no update without version", true, nil, []GitCommitLog{}, nil, false},
-		{"no update on unknown type", true, version("0.0.0"), []GitCommitLog{commitlog("a", map[string]string{})}, version("0.0.0"), false},
-		{"no update on unmapped known type", false, version("0.0.0"), []GitCommitLog{commitlog("none", map[string]string{})}, version("0.0.0"), false},
-		{"update patch on unknown type", false, version("0.0.0"), []GitCommitLog{commitlog("a", map[string]string{})}, version("0.0.1"), true},
-		{"patch update", false, version("0.0.0"), []GitCommitLog{commitlog("patch", map[string]string{})}, version("0.0.1"), true},
-		{"patch update without version", false, nil, []GitCommitLog{commitlog("patch", map[string]string{})}, nil, true},
-		{"minor update", false, version("0.0.0"), []GitCommitLog{commitlog("patch", map[string]string{}), commitlog("minor", map[string]string{})}, version("0.1.0"), true},
-		{"major update", false, version("0.0.0"), []GitCommitLog{commitlog("patch", map[string]string{}), commitlog("major", map[string]string{})}, version("1.0.0"), true},
-		{"breaking change update", false, version("0.0.0"), []GitCommitLog{commitlog("patch", map[string]string{}), commitlog("patch", map[string]string{"breaking-change": "break"})}, version("1.0.0"), true},
+		{"no update on unknown type", true, version("0.0.0"), []GitCommitLog{commitlog("a", map[string]string{}, "a")}, version("0.0.0"), false},
+		{"no update on unmapped known type", false, version("0.0.0"), []GitCommitLog{commitlog("none", map[string]string{}, "a")}, version("0.0.0"), false},
+		{"update patch on unknown type", false, version("0.0.0"), []GitCommitLog{commitlog("a", map[string]string{}, "a")}, version("0.0.1"), true},
+		{"patch update", false, version("0.0.0"), []GitCommitLog{commitlog("patch", map[string]string{}, "a")}, version("0.0.1"), true},
+		{"patch update without version", false, nil, []GitCommitLog{commitlog("patch", map[string]string{}, "a")}, nil, true},
+		{"minor update", false, version("0.0.0"), []GitCommitLog{commitlog("patch", map[string]string{}, "a"), commitlog("minor", map[string]string{}, "a")}, version("0.1.0"), true},
+		{"major update", false, version("0.0.0"), []GitCommitLog{commitlog("patch", map[string]string{}, "a"), commitlog("major", map[string]string{}, "a")}, version("1.0.0"), true},
+		{"breaking change update", false, version("0.0.0"), []GitCommitLog{commitlog("patch", map[string]string{}, "a"), commitlog("patch", map[string]string{"breaking-change": "break"}, "a")}, version("1.0.0"), true},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {