refactor: decouple components and improve modularity

Author: dreamguxiang

COPYING

@@ -93,3 +93,8 @@ Supports installing, managing, and launching Release/Preview builds. Provides ve
 
 **Contributing**
 - PRs and issues are welcome.
+
+**License**
+Copyright © 2025 LeviMC, All rights reserved.
+
+This project is licensed under the LGPL-3.0 License for its non-closed source parts — see the [COPYING](COPYING) file for details.

README.md

@@ -93,3 +93,8 @@
 ## 参与贡献
 - 欢迎通过 Issue 与 Pull Request 参与贡献。
 - 在提交前请尽量复现问题并附带必要信息。
+
+## 许可证
+Copyright © 2025 LeviMC, All rights reserved.
+
+本项目的非闭源部分以 LGPL-3.0 许可发布；详情请参见仓库中的 [COPYING](COPYING) 文件。

README.zh-CN.md

@@ -0,0 +1,7 @@
+package mcservice
+
+const (
+    EventExtractError    = "extract.error"
+    EventExtractDone     = "extract.done"
+    EventExtractProgress = "extract.progress"
+)

internal/mcservice/events.go

@@ -0,0 +1,55 @@
+package mcservice
+
+import (
+    "path/filepath"
+    "strings"
+
+    "github.com/liteldev/LeviLauncher/internal/explorer"
+    "github.com/liteldev/LeviLauncher/internal/utils"
+)
+
+func OpenModsExplorer(name string) { _ = explorer.OpenMods(name) }
+
+func OpenWorldsExplorer(name string, isPreview bool) {
+    roots := GetContentRoots(name)
+    users := strings.TrimSpace(roots.UsersRoot)
+    if users != "" {
+        ents := ListDir(users)
+        var firstPlayer string
+        for _, e := range ents {
+            if e.IsDir {
+                nm := strings.TrimSpace(e.Name)
+                if nm != "" && !strings.EqualFold(nm, "Shared") {
+                    firstPlayer = nm
+                    break
+                }
+            }
+        }
+        if firstPlayer != "" {
+            wp := filepath.Join(users, firstPlayer, "games", "com.mojang", "minecraftWorlds")
+            if utils.DirExists(wp) {
+                _ = explorer.OpenPath(wp)
+                return
+            }
+        }
+        if utils.DirExists(users) {
+            _ = explorer.OpenPath(users)
+            return
+        }
+    }
+    legacy := filepath.Join(utils.GetMinecraftGDKDataPath(isPreview), "worlds")
+    _ = explorer.OpenPath(legacy)
+}
+
+func OpenPathDir(dir string) {
+    d := strings.TrimSpace(dir)
+    if d == "" {
+        return
+    }
+    _ = explorer.OpenPath(d)
+}
+
+func OpenGameDataExplorer(isPreview bool) {
+    base := utils.GetMinecraftGDKDataPath(isPreview)
+    _ = explorer.OpenPath(base)
+}

internal/mcservice/explorer.go

@@ -0,0 +1,115 @@
+package mcservice
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/liteldev/LeviLauncher/internal/types"
+	"github.com/liteldev/LeviLauncher/internal/utils"
+	"golang.org/x/sys/windows"
+)
+
+func ListDrives() []string {
+	drives := []string{}
+	for l := 'A'; l <= 'Z'; l++ {
+		root := string(l) + ":\\"
+		if fi, err := os.Stat(root); err == nil && fi.IsDir() {
+			drives = append(drives, root)
+		}
+	}
+	return drives
+}
+
+func ListDir(path string) []types.FileEntry {
+	list := []types.FileEntry{}
+	if path == "" {
+		return list
+	}
+	ents, err := os.ReadDir(path)
+	if err != nil {
+		return list
+	}
+	for _, e := range ents {
+		p := filepath.Join(path, e.Name())
+		list = append(list, types.FileEntry{
+			Name:  e.Name(),
+			Path:  p,
+			IsDir: e.IsDir(),
+			Size:  0,
+		})
+	}
+	return list
+}
+
+func GetPathSize(path string) int64 {
+	p := strings.TrimSpace(path)
+	if p == "" {
+		return 0
+	}
+	fi, err := os.Stat(p)
+	if err != nil {
+		return 0
+	}
+	if fi.IsDir() {
+		return utils.DirSize(p)
+	}
+	return fi.Size()
+}
+
+func GetPathModTime(path string) int64 {
+	p := strings.TrimSpace(path)
+	if p == "" {
+		return 0
+	}
+	fi, err := os.Stat(p)
+	if err != nil {
+		return 0
+	}
+	return fi.ModTime().Unix()
+}
+
+func CreateFolder(parent string, name string) string {
+	p := strings.TrimSpace(parent)
+	n := strings.TrimSpace(name)
+	if p == "" || n == "" {
+		return "ERR_NAME_REQUIRED"
+	}
+	fi, err := os.Stat(p)
+	if err != nil || !fi.IsDir() {
+		return "ERR_NOT_FOUND_OLD"
+	}
+	safe := utils.SanitizeFilename(n)
+	if strings.TrimSpace(safe) == "" {
+		safe = "new_folder"
+	}
+	full := filepath.Join(p, safe)
+	if utils.DirExists(full) {
+		return "ERR_NAME_EXISTS"
+	}
+	if err := utils.CreateDir(full); err != nil {
+		return "ERR_CREATE_TARGET_DIR"
+	}
+	return ""
+}
+
+func GetDriveStats(root string) map[string]uint64 {
+	res := map[string]uint64{"total": 0, "free": 0}
+	r := strings.TrimSpace(root)
+	if r == "" {
+		return res
+	}
+	if !strings.HasSuffix(r, "\\") {
+		r += "\\"
+	}
+	p, err := windows.UTF16PtrFromString(r)
+	if err != nil {
+		return res
+	}
+	var freeBytesAvailable, totalNumberOfBytes, totalNumberOfFreeBytes uint64
+	if err := windows.GetDiskFreeSpaceEx(p, &freeBytesAvailable, &totalNumberOfBytes, &totalNumberOfFreeBytes); err == nil {
+		res["total"] = totalNumberOfBytes
+		res["free"] = totalNumberOfFreeBytes
+	}
+	return res
+}