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package revctrl
import (
"errors"
"fmt"
"git.sr.ht/~rjarry/aerc/lib/pama/models"
"git.sr.ht/~rjarry/aerc/log"
)
var ErrUnsupported = errors.New("unsupported")
type factoryFunc func(string) models.RevisionController
var controllers = map[string]factoryFunc{}
func register(controllerID string, fn factoryFunc) {
controllers[controllerID] = fn
}
func New(controllerID string, path string) (models.RevisionController, error) {
factoryFunc, ok := controllers[controllerID]
if !ok {
return nil, errors.New("cannot create revision control instance")
}
return factoryFunc(path), nil
}
type detector interface {
Support() bool
Root() (string, error)
}
func Detect(path string) (string, string, error) {
for controllerID, factoryFunc := range controllers {
rc, ok := factoryFunc(path).(detector)
if ok && rc.Support() {
log.Tracef("support found for %v", controllerID)
root, err := rc.Root()
if err != nil {
continue
}
log.Tracef("root found in %s", root)
return controllerID, root, nil
}
}
return "", "", fmt.Errorf("no supported repository found in %s", path)
}
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