patch: implement worktree support

Implement worktree support for the patch management.

Use ":patch apply -w <commit-ish> <tag>" to create a new worktree and
apply the selected messages to it. The worktree is linked to repo in the
current project.

Internally, the worktree is stored as a new project. When this project
is deleted with ":patch delete", the underlying linked worktree is
removed as well.

":patch list" shows when a project is a worktree and to what project it
is linked to.

Worktrees enable the users to create a new copy of the repo at a given
commit and apply patches without interrupting the current work in the
base repo.

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

1 files changed, 19 insertions, 3 deletions

diff --git a/lib/pama/delete.go b/lib/pama/delete.go
index 18a93a27..53dbeeb1 100644
--- a/lib/pama/delete.go
+++ b/lib/pama/delete.go
@@ -1,6 +1,10 @@
 package pama
 
-import "fmt"
+import (
+	"fmt"
+
+	"git.sr.ht/~rjarry/aerc/log"
+)
 
 // Delete removes provided project
 func (m PatchManager) Delete(name string) error {
@@ -21,8 +25,8 @@ func (m PatchManager) Delete(name string) error {
 		return fmt.Errorf("Project '%s' not found", name)
 	}
 
-	cur, err := m.CurrentProject()
-	if err == nil && cur.Name == name {
+	cur, err := store.CurrentName()
+	if err == nil && cur == name {
 		var next string
 		for _, s := range names {
 			if name != s {
@@ -36,6 +40,18 @@ func (m PatchManager) Delete(name string) error {
 		}
 	}
 
+	p, err := store.Project(name)
+	if err == nil && isWorktree(p) {
+		err = m.deleteWorktree(p)
+		if err != nil {
+			log.Errorf("failed to delete worktree: %v", err)
+		}
+		err = store.SetCurrent(p.Worktree.Name)
+		if err != nil {
+			log.Errorf("failed to set current project: %v", err)
+		}
+	}
+
 	return storeErr(m.store().DeleteProject(name))
 }