85 lines
2.1 KiB
Go
85 lines
2.1 KiB
Go
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package fsService
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import (
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"encoding/json"
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"errors"
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"fmt"
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"os"
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"path/filepath"
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"golang.org/x/sys/windows"
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)
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type gameSelection struct {
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GamePath string `json:"gamePath"`
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GameDir string `json:"gameDir"`
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}
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func gameSelectionPath() (string, error) {
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configDir, err := os.UserConfigDir()
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if err != nil {
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return "", fmt.Errorf("resolve user config directory: %w", err)
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}
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return filepath.Join(configDir, "g-launcher", "game-selection.json"), nil
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}
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func (f *FSService) GetSavedGameSelection() (string, string, error) {
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path, err := gameSelectionPath()
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if err != nil {
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return "", "", err
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}
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data, err := os.ReadFile(path)
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if errors.Is(err, os.ErrNotExist) {
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return "", "", nil
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}
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if err != nil {
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return "", "", fmt.Errorf("read saved game selection: %w", err)
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}
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var selection gameSelection
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if err := json.Unmarshal(data, &selection); err != nil {
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return "", "", fmt.Errorf("parse saved game selection: %w", err)
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}
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return selection.GamePath, selection.GameDir, nil
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}
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func (f *FSService) SaveGameSelection(gamePath, gameDir string) error {
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path, err := gameSelectionPath()
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if err != nil {
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return err
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}
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data, err := json.Marshal(gameSelection{GamePath: gamePath, GameDir: gameDir})
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if err != nil {
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return fmt.Errorf("encode game selection: %w", err)
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}
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if err := os.MkdirAll(filepath.Dir(path), 0700); err != nil {
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return fmt.Errorf("create game selection directory: %w", err)
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}
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tempPath := path + ".tmp"
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if err := os.WriteFile(tempPath, data, 0600); err != nil {
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return fmt.Errorf("write game selection: %w", err)
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}
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tempPathPtr, err := windows.UTF16PtrFromString(tempPath)
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if err != nil {
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_ = os.Remove(tempPath)
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return fmt.Errorf("encode temporary game selection path: %w", err)
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}
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pathPtr, err := windows.UTF16PtrFromString(path)
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if err != nil {
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_ = os.Remove(tempPath)
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return fmt.Errorf("encode game selection path: %w", err)
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}
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if err := windows.MoveFileEx(tempPathPtr, pathPtr, windows.MOVEFILE_REPLACE_EXISTING|windows.MOVEFILE_WRITE_THROUGH); err != nil {
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_ = os.Remove(tempPath)
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return fmt.Errorf("replace saved game selection: %w", err)
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}
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return nil
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}
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