hook: add mail-sent hook

Add a hook to trigger when a message is sent.

References: https://todo.sr.ht/~rjarry/aerc/136
Signed-off-by: Moritz Poldrack <git@moritz.sh>
Tested-by: Bence Ferdinandy <bence@ferdinandy.com>
Acked-by: Robin Jarry <robin@jarry.cc>

4 files changed, 59 insertions, 0 deletions

diff --git a/commands/compose/send.go b/commands/compose/send.go
index dfd531ee..13d9fd4a 100644
--- a/commands/compose/send.go
+++ b/commands/compose/send.go
@@ -19,6 +19,7 @@ import (
 	"git.sr.ht/~rjarry/aerc/commands/mode"
 	"git.sr.ht/~rjarry/aerc/commands/msg"
 	"git.sr.ht/~rjarry/aerc/lib"
+	"git.sr.ht/~rjarry/aerc/lib/hooks"
 	"git.sr.ht/~rjarry/aerc/log"
 	"git.sr.ht/~rjarry/aerc/models"
 	"git.sr.ht/~rjarry/aerc/worker/types"
@@ -247,6 +248,14 @@ func send(composer *app.Composer, ctx sendCtx,
 		}
 		app.PushStatus("Message sent.", 10*time.Second)
 		composer.SetSent(ctx.archive)
+		err = hooks.RunHook(&hooks.MailSent{
+			Account: composer.Account().Name(),
+			Header:  header,
+		})
+		if err != nil {
+			log.Errorf("failed to trigger mail-sent hook: %v", err)
+			composer.Account().PushError(fmt.Errorf("[hook.mail-sent] failed: %w", err))
+		}
 		composer.Close()
 	}()
 }
diff --git a/config/hooks.go b/config/hooks.go
index ed81296d..bc04ac75 100644
--- a/config/hooks.go
+++ b/config/hooks.go
@@ -11,6 +11,7 @@ type HooksConfig struct {
 	MailReceived string `ini:"mail-received"`
 	MailDeleted  string `ini:"mail-deleted"`
 	MailAdded    string `ini:"mail-added"`
+	MailSent     string `ini:"mail-sent"`
 }
 
 var Hooks HooksConfig
diff --git a/doc/aerc-config.5.scd b/doc/aerc-config.5.scd
index f3d45085..043b738a 100644
--- a/doc/aerc-config.5.scd
+++ b/doc/aerc-config.5.scd
@@ -1021,6 +1021,24 @@ They are configured in the *[hooks]* section of aerc.conf.
 
 		*mail-added* = _mbsync "$AERC_ACCOUNT:$AERC_FOLDER"_
 
+*mail-sent* = _<command>_
+	Executed when a message is sent. This does not necessarily signify
+	successful posting, if a queueing system like msmtpq is used.
+
+	Variables:
+
+	- *AERC_ACCOUNT*
+	- *AERC_FROM_NAME*
+	- *AERC_FROM_ADDRESS*
+	- *AERC_SUBJECT*
+	- *AERC_TO*
+	- *AERC_CC*
+
+	Example:
+
+		*mail-sent* = _if [ "$AERC_ACCOUNT" = "gmail" ]; then mbsync
+		gmail; fi_
+
 *aerc-shutdown* = _<command>_
 	Executed when aerc shuts down. Aerc will wait for the command to finish
 	before exiting.
diff --git a/lib/hooks/mail-sent.go b/lib/hooks/mail-sent.go
new file mode 100644
index 00000000..59edafa2
--- /dev/null
+++ b/lib/hooks/mail-sent.go
@@ -0,0 +1,31 @@
+package hooks
+
+import (
+	"fmt"
+
+	"git.sr.ht/~rjarry/aerc/config"
+	"github.com/emersion/go-message/mail"
+)
+
+type MailSent struct {
+	Account string
+	Header  *mail.Header
+}
+
+func (m *MailSent) Cmd() string {
+	return config.Hooks.MailSent
+}
+
+func (m *MailSent) Env() []string {
+	from, _ := mail.ParseAddress(m.Header.Get("From"))
+	env := []string{
+		fmt.Sprintf("AERC_ACCOUNT=%s", m.Account),
+		fmt.Sprintf("AERC_FROM_NAME=%s", from.Name),
+		fmt.Sprintf("AERC_FROM_ADDRESS=%s", from.Address),
+		fmt.Sprintf("AERC_SUBJECT=%s", m.Header.Get("Subject")),
+		fmt.Sprintf("AERC_TO=%s", m.Header.Get("To")),
+		fmt.Sprintf("AERC_CC=%s", m.Header.Get("Cc")),
+	}
+
+	return env
+}