Unify prompt repository source handling

internal/promptdef/source.go

@@ -0,0 +1,63 @@
+package promptdef
+
+import (
+	"context"
+	"errors"
+	"io/fs"
+	"os"
+
+	"gitea.maximumdirect.net/eric/promptkit/internal/filecatalog"
+)
+
+type promptDefinitionSource interface {
+	contentSourceRoot
+	findYAMLFiles(context.Context) ([]string, error)
+	readDefinition(string) ([]byte, error)
+	displayPath(string) string
+}
+
+type osPromptSource struct {
+	root        string
+	contentRoot osContentSourceRoot
+}
+
+func (s osPromptSource) findYAMLFiles(ctx context.Context) ([]string, error) {
+	return filecatalog.FindYAMLFiles(ctx, s.root)
+}
+
+func (s osPromptSource) readDefinition(name string) ([]byte, error) {
+	return os.ReadFile(name)
+}
+
+func (s osPromptSource) displayPath(name string) string {
+	return filecatalog.RelativePath(s.root, name)
+}
+
+func (s osPromptSource) readContentFile(sourcePath string, contentFile string) (string, string, error) {
+	return s.contentRoot.readContentFile(sourcePath, contentFile)
+}
+
+type fsPromptSource struct {
+	fsys        fs.FS
+	root        string
+	contentRoot contentSourceRoot
+}
+
+func (s fsPromptSource) findYAMLFiles(ctx context.Context) ([]string, error) {
+	if s.fsys == nil {
+		return nil, errors.New("filesystem is nil")
+	}
+	return filecatalog.FindFSYAMLFiles(ctx, s.fsys, s.root)
+}
+
+func (s fsPromptSource) readDefinition(name string) ([]byte, error) {
+	return fs.ReadFile(s.fsys, name)
+}
+
+func (s fsPromptSource) displayPath(name string) string {
+	return filecatalog.DisplayPath(s.root, name)
+}
+
+func (s fsPromptSource) readContentFile(sourcePath string, contentFile string) (string, string, error) {
+	return s.contentRoot.readContentFile(sourcePath, contentFile)
+}