Add move-tab command

1 files changed, 51 insertions, 0 deletions

diff --git a/commands/move-tab.go b/commands/move-tab.go
new file mode 100644
index 0000000..9f0293c
--- /dev/null
+++ b/commands/move-tab.go
@@ -0,0 +1,51 @@
+package commands
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	"git.sr.ht/~sircmpwn/aerc/widgets"
+)
+
+type MoveTab struct{}
+
+func init() {
+	register(MoveTab{})
+}
+
+func (MoveTab) Aliases() []string {
+	return []string{"move-tab"}
+}
+
+func (MoveTab) Complete(aerc *widgets.Aerc, args []string) []string {
+	return nil
+}
+
+func (MoveTab) Execute(aerc *widgets.Aerc, args []string) error {
+	if len(args) == 1 {
+		return fmt.Errorf("Usage: %s [+|-]<index>", args[0])
+	}
+
+	joinedArgs := strings.Join(args[1:], "")
+
+	n, err := strconv.Atoi(joinedArgs)
+	if err != nil {
+		return fmt.Errorf("failed to parse index argument: %v", err)
+	}
+
+	i := aerc.SelectedTabIndex()
+	l := aerc.NumTabs()
+
+	if strings.HasPrefix(joinedArgs, "+") {
+		i = (i + n) % l
+	} else if strings.HasPrefix(joinedArgs, "-") {
+		i = (((i + n) % l) + l) % l
+	} else {
+		i = n
+	}
+
+	aerc.MoveTab(i)
+
+	return nil
+}