150 lines
3.0 KiB
Go
150 lines
3.0 KiB
Go
package config
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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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"github.com/haunt98/copy-go"
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)
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const (
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configDirPath = "data"
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configFile = "data.json"
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)
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type config struct {
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configApps
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}
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var _ Config = (*config)(nil)
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type configApps struct {
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Apps map[string]App `json:"apps"`
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}
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// Read from file
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type App struct {
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Paths []Path `json:"paths"`
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}
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type Path struct {
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Internal string `json:"internal"`
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External string `json:"external"`
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}
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// LoadConfig return config, configDemo
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func LoadConfig(path string) (*config, *configDemo, error) {
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configPath := getConfigPath(path)
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bytes, err := os.ReadFile(configPath)
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if err != nil {
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if errors.Is(err, os.ErrNotExist) {
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return nil, nil, fmt.Errorf("file not exist %s: %w", configPath, err)
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}
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return nil, nil, fmt.Errorf("failed to read file%s: %w", configPath, err)
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}
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var cfgApps configApps
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if err = json.Unmarshal(bytes, &cfgApps); err != nil {
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return nil, nil, fmt.Errorf("failed to unmarshal: %w", err)
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}
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cfg := config{
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configApps: cfgApps,
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}
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cfgDemo := configDemo{
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configApps: cfgApps,
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}
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return &cfg, &cfgDemo, nil
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}
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// Install internal -> external
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func (c *config) Install() error {
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for _, app := range c.Apps {
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for _, p := range app.Paths {
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if err := copy.Replace(p.Internal, p.External); err != nil {
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return fmt.Errorf("failed to replace %s -> %s: %w", p.Internal, p.External, err)
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}
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}
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}
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return nil
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}
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// Update external -> internal
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func (c *config) Update() error {
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for _, app := range c.Apps {
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for _, p := range app.Paths {
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if err := copy.Replace(p.External, p.Internal); err != nil {
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return fmt.Errorf("failed to replace %s -> %s: %w", p.External, p.Internal, err)
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}
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}
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}
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return nil
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}
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// Clean remove unused config inside config dir
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func (c *config) Clean() error {
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unusedDirs, err := getUnusedDirs(c.Apps)
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if err != nil {
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return err
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}
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// Delete ununsed dirs to save some space
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for dir := range unusedDirs {
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dirPath := filepath.Join(configDirPath, dir)
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if err := os.RemoveAll(dirPath); err != nil {
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return fmt.Errorf("failed to remove %s: %w", dir, err)
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}
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}
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return nil
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}
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func (c *config) Compare() error {
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for _, app := range c.Apps {
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for _, p := range app.Paths {
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if err := copy.Compare(p.Internal, p.External); err != nil {
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return fmt.Errorf("failed to compare %s with %s: %w", p.Internal, p.External, err)
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}
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}
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}
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return nil
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}
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func getConfigPath(path string) string {
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return filepath.Join(path, configDirPath, configFile)
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}
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func getUnusedDirs(apps map[string]App) (map[string]struct{}, error) {
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files, err := os.ReadDir(configDirPath)
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if err != nil {
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return nil, fmt.Errorf("failed to read dir %s: %w", configDirPath, err)
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}
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// Get all dirs inside config dir
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unusedDirs := make(map[string]struct{})
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for _, file := range files {
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// Ignore config file
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if file.Name() == configFile {
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continue
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}
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unusedDirs[file.Name()] = struct{}{}
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}
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// Removed used dirs
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for name := range apps {
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delete(unusedDirs, name)
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}
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return unusedDirs, nil
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}
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