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, 17 insertions, 0 deletions

diff --git a/lib/pama/store/store.go b/lib/pama/store/store.go
index 8f93873d..aaee5412 100644
--- a/lib/pama/store/store.go
+++ b/lib/pama/store/store.go
@@ -221,6 +221,23 @@ func (instance) Names() ([]string, error) {
 	return names, nil
 }
 
+func (instance) Project(name string) (models.Project, error) {
+	db, err := openStorage()
+	if err != nil {
+		return models.Project{}, err
+	}
+	defer db.Close()
+	raw, err := db.Get(createKey(name), nil)
+	if err != nil {
+		return models.Project{}, err
+	}
+	p, err := decode(raw)
+	if err != nil {
+		return models.Project{}, err
+	}
+	return p, nil
+}
+
 func (instance) Projects() ([]models.Project, error) {
 	var projects []models.Project
 	db, err := openStorage()