126 lines
2.7 KiB
Go
126 lines
2.7 KiB
Go
package main
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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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)
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const (
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configDirPath = "config"
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configFile = "config.json"
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)
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type Config struct {
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// Read from file
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Apps map[string]App `json:"apps"`
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}
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type App struct {
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Files []Path `json:"files"`
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Dirs []Path `json:"dirs"`
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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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// Load config from file
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func LoadConfig(path string) (result Config, err 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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err = fmt.Errorf("file not exist %s: %w", configPath, err)
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return
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}
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err = fmt.Errorf("failed to read file%s: %w", configPath, err)
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return
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}
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if err = json.Unmarshal(bytes, &result); err != nil {
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err = fmt.Errorf("failed to unmarshal: %w", err)
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return
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}
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return
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}
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// 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 _, file := range app.Files {
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if err := replaceFile(file.Internal, file.External); err != nil {
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return fmt.Errorf("failed to remove and copy from %s to %s: %w", file.Internal, file.External, err)
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}
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}
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for _, dir := range app.Dirs {
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if err := replaceDir(dir.Internal, dir.External); err != nil {
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return fmt.Errorf("failed to remove and copy from %s to %s: %w", dir.Internal, dir.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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// 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 _, file := range app.Files {
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if err := replaceFile(file.External, file.Internal); err != nil {
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return fmt.Errorf("failed to remove and copy from %s to %s: %w", file.External, file.Internal, err)
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}
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}
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for _, dir := range app.Dirs {
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if err := replaceDir(dir.External, dir.Internal); err != nil {
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return fmt.Errorf("failed to remove and copy from %s to %s: %w", dir.External, dir.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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func (c *Config) Clean() error {
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files, err := os.ReadDir(configDirPath)
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if err != nil {
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return 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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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 c.Apps {
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delete(unusedDirs, name)
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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 getConfigPath(path string) string {
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return filepath.Join(path, configDirPath, configFile)
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}
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