feat: 重构

scan.go

@@ -0,0 +1,39 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+
+	tea "github.com/charmbracelet/bubbletea"
+)
+
+type versionInfo struct {
+	name string
+	path string
+}
+
+type versionsFoundMsg []versionInfo
+type scanErrorMsg struct{ err error }
+
+func scanVersions(exeDir string) tea.Cmd {
+	return func() tea.Msg {
+		pattern := filepath.Join(exeDir, ".minecraft", "versions", "*")
+		matches, err := filepath.Glob(pattern)
+		if err != nil {
+			return scanErrorMsg{err: err}
+		}
+
+		var versions []versionInfo
+		for _, m := range matches {
+			info, err := os.Stat(m)
+			if err != nil || !info.IsDir() {
+				continue
+			}
+			versions = append(versions, versionInfo{
+				name: filepath.Base(m),
+				path: m,
+			})
+		}
+		return versionsFoundMsg(versions)
+	}
+}