pama: define the entity models

Define the entity models for the patch management. Add a Project and
Commit struct and implement the Stringer interface for both.

Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>

1 files changed, 81 insertions, 0 deletions

diff --git a/lib/pama/models/view.go b/lib/pama/models/view.go
new file mode 100644
index 00000000..093ca6f0
--- /dev/null
+++ b/lib/pama/models/view.go
@@ -0,0 +1,81 @@
+package models
+
+import (
+	"bytes"
+	"io"
+	"strings"
+	"text/template"
+
+	"git.sr.ht/~rjarry/aerc/log"
+)
+
+var templateText = `
+Project    {{.Name}}    {{if .IsActive}}[active]{{end}}
+Directory  {{.Root}}
+Base       {{with .Base.ID}}{{if ge (len .) 40}}{{printf "%-6.6s" .}}{{else}}{{.}}{{end}}{{end}}
+{{$notes := .Notes}}{{$commits := .Commits}}
+{{- range $index, $patch := .Patches}}
+    {{$patch}}:
+        {{- range (index $commits $patch)}}
+        {{with (index $notes .ID)}}[{{.}}] {{end}}{{. -}}
+        {{end}}
+{{end -}}
+`
+
+var viewRenderer = template.Must(template.New("ProjectToText").Parse(templateText))
+
+type view struct {
+	Name string
+	Root string
+	Base Commit
+	// Patches are the unique tag names.
+	Patches []string
+	// Commits is a map where the tag names are keys and the associated
+	// commits the values.
+	Commits map[string][]Commit
+	// Notes contain annotations of the commits where the commit hash is
+	// the key and the annotation is the value.
+	Notes map[string]string
+	// IsActive is true if the current project is selected.
+	IsActive bool
+}
+
+func newView(p Project, active bool, notes map[string]string) view {
+	v := view{
+		Name:     p.Name,
+		Root:     p.Root,
+		Base:     p.Base,
+		Commits:  make(map[string][]Commit),
+		Notes:    notes,
+		IsActive: active,
+	}
+
+	for _, commit := range p.Commits {
+		patch := commit.Tag
+		commits, ok := v.Commits[patch]
+		if !ok {
+			v.Patches = append(v.Patches, patch)
+		}
+		commits = append(commits, commit)
+		v.Commits[patch] = commits
+	}
+
+	return v
+}
+
+func (v view) String() string {
+	var buf bytes.Buffer
+	err := viewRenderer.Execute(&buf, v)
+	if err != nil {
+		log.Errorf("failed to run template: %v", err)
+	}
+	return buf.String()
+}
+
+func (p Project) String() string {
+	return newView(p, false, nil).String()
+}
+
+func (p Project) NewReader(isActive bool, notes map[string]string) io.Reader {
+	return strings.NewReader(newView(p, isActive, notes).String())
+}