patch/init: add init sub-cmd

Implement the :patch init command to initialize a new project.

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

3 files changed, 121 insertions, 0 deletions

diff --git a/commands/patch/init.go b/commands/patch/init.go
new file mode 100644
index 00000000..328fcd9f
--- /dev/null
+++ b/commands/patch/init.go
@@ -0,0 +1,36 @@
+package patch
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"git.sr.ht/~rjarry/aerc/lib/pama"
+)
+
+type Init struct {
+	Force bool   `opt:"-f"`
+	Name  string `opt:"name" required:"false"`
+}
+
+func init() {
+	register(Init{})
+}
+
+func (Init) Aliases() []string {
+	return []string{"init"}
+}
+
+func (i Init) Execute(args []string) error {
+	cwd, err := os.Getwd()
+	if err != nil {
+		return fmt.Errorf("Could not get current directory: %w", err)
+	}
+
+	name := i.Name
+	if name == "" {
+		name = filepath.Base(cwd)
+	}
+
+	return pama.New().Init(name, cwd, i.Force)
+}
diff --git a/lib/pama/init.go b/lib/pama/init.go
new file mode 100644
index 00000000..cfb9c896
--- /dev/null
+++ b/lib/pama/init.go
@@ -0,0 +1,34 @@
+package pama
+
+import (
+	"git.sr.ht/~rjarry/aerc/lib/pama/models"
+)
+
+// Init creats a new revision control project
+func (m PatchManager) Init(name, path string, overwrite bool) error {
+	id, root, err := m.detect(path)
+	if err != nil {
+		return err
+	}
+	rc, err := m.rc(id, root)
+	if err != nil {
+		return err
+	}
+	headID, err := rc.Head()
+	if err != nil {
+		return err
+	}
+	p := models.Project{
+		Name:      name,
+		Root:      root,
+		RevctrlID: id,
+		Base:      models.NewCommit(rc, headID, ""),
+		Commits:   make([]models.Commit, 0),
+	}
+	store := m.store()
+	err = store.StoreProject(p, overwrite)
+	if err != nil {
+		return storeErr(err)
+	}
+	return storeErr(store.SetCurrent(name))
+}
diff --git a/lib/pama/pama.go b/lib/pama/pama.go
new file mode 100644
index 00000000..6fe91fee
--- /dev/null
+++ b/lib/pama/pama.go
@@ -0,0 +1,51 @@
+package pama
+
+import (
+	"fmt"
+
+	"git.sr.ht/~rjarry/aerc/lib/pama/models"
+	"git.sr.ht/~rjarry/aerc/lib/pama/revctrl"
+	"git.sr.ht/~rjarry/aerc/lib/pama/store"
+)
+
+type (
+	detectFn func(string) (string, string, error)
+	rcFn     func(string, string) (models.RevisionController, error)
+	storeFn  func() models.PersistentStorer
+)
+
+type PatchManager struct {
+	detect detectFn
+	rc     rcFn
+	store  storeFn
+}
+
+func New() PatchManager {
+	return PatchManager{
+		detect: revctrl.Detect,
+		rc:     revctrl.New,
+		store:  store.Store,
+	}
+}
+
+func FromFunc(d detectFn, r rcFn, s storeFn) PatchManager {
+	return PatchManager{
+		detect: d,
+		rc:     r,
+		store:  s,
+	}
+}
+
+func storeErr(err error) error {
+	if err == nil {
+		return nil
+	}
+	return fmt.Errorf("store error: %w", err)
+}
+
+func revErr(err error) error {
+	if err == nil {
+		return nil
+	}
+	return fmt.Errorf("revision control error: %w", err)
+}