[#403] Use template file for building retrospective contents

- Add retro/template/retro.md
- Import template file using embed

src/engine/tcr.go

@@ -229,7 +229,7 @@ func (tcr *TCREngine) PrintStats(p params.Params) {
 }
 
 // GenerateRetro generates a retrospective markdown file template using stats
-func (tcr *TCREngine) GenerateRetro(_p params.Params) {
+func (tcr *TCREngine) GenerateRetro(_ params.Params) {
 	//TODO implement me
 	panic("implement me")
 }

src/retro/retrospective.go

@@ -24,21 +24,24 @@ package retro
 
 import (
 	"bytes"
+	_ "embed"
 	"github.com/murex/tcr/events"
 	"text/template"
 )
 
+//go:embed template/retro.md
+var tmpl string
+
+// GenerateMarkdown builds retrospective markdown contents
 func GenerateMarkdown(tcrEvents *events.TcrEvents) string {
 	t := template.New("QuickRetro")
-	t, _ = t.Parse("# Quick Retrospective\n" +
-		"Average passed commit size: {{.GreenAvg}}\n" +
-		"Average failed commit size: {{.RedAvg}}\n")
+	t, _ = t.Parse(tmpl)
 
 	greenAvg := tcrEvents.AllLineChangesPerGreenCommit().Avg()
 	redAvg := tcrEvents.AllLineChangesPerRedCommit().Avg()
 
 	buf := new(bytes.Buffer)
-	t.Execute(buf, struct {
+	_ = t.Execute(buf, struct {
 		GreenAvg any
 		RedAvg   any
 	}{greenAvg, redAvg})

src/retro/template/retro.md

@@ -0,0 +1,40 @@
+# Quick Retrospective
+
+## TODO - Session Name
+
+| Team | Date       |
+|------|------------|
+| XXX  | MM/DD/YYYY |
+
+## Session's TCR metrics
+
+- Average passed commit size: {{.GreenAvg}}
+- Average failed commit size: {{.RedAvg}}
+
+## DO
+
+_`What did we do?`_
+
+-
+-
+
+## LEARN
+
+_`What did we learn?`_
+
+-
+-
+
+## PUZZLE
+
+_`What still puzzles us?`_
+
+-
+-
+
+## DECIDE
+
+_`How can we apply this in the future?`_
+
+-
+-