templates: attach directly from templates

Attach a file from templates. Add a split template function.

{{- .Attach "LICENSE" -}}

or

{{range (exec "find ./doc -type f -name *.scd" "" | split "\n") -}}
	{{with . }}
		{{- $.Attach . -}}
	{{- end}}
{{- end}}

Fixes: https://todo.sr.ht/~rjarry/aerc/109
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>

1 files changed, 19 insertions, 0 deletions

diff --git a/lib/state/templates.go b/lib/state/templates.go
index 7b877c76..22d06589 100644
--- a/lib/state/templates.go
+++ b/lib/state/templates.go
@@ -12,11 +12,16 @@ import (
 	"github.com/emersion/go-message/mail"
 )
 
+type Composer interface {
+	AddAttachment(string)
+}
+
 type DataSetter interface {
 	Data() models.TemplateData
 	SetHeaders(*mail.Header, *models.OriginalMail)
 	SetInfo(*models.MessageInfo, int, bool)
 	SetThreading(string, bool, int, bool)
+	SetComposer(Composer)
 	SetAccount(*config.AccountConfig)
 	SetFolder(*models.Directory)
 	SetRUE([]string, func(string) (int, int, int))
@@ -53,6 +58,8 @@ type templateData struct {
 
 	state       *AccountState
 	pendingKeys []config.KeyStroke
+
+	composer Composer
 }
 
 func NewDataSetter() DataSetter {
@@ -102,6 +109,10 @@ func (d *templateData) SetFolder(folder *models.Directory) {
 	d.folder = folder
 }
 
+func (d *templateData) SetComposer(c Composer) {
+	d.composer = c
+}
+
 func (d *templateData) SetRUE(folders []string,
 	cb func(string) (int, int, int),
 ) {
@@ -117,6 +128,14 @@ func (d *templateData) SetPendingKeys(keys []config.KeyStroke) {
 	d.pendingKeys = keys
 }
 
+func (d *templateData) Attach(s string) string {
+	if d.composer != nil {
+		d.composer.AddAttachment(s)
+		return ""
+	}
+	return fmt.Sprintf("Failed to attach: %s", s)
+}
+
 func (d *templateData) Account() string {
 	if d.account != nil {
 		return d.account.Name