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refactor: use remove and copy to reduce boiler plate code

main
Tran Hau 2021-01-18 16:41:14 +07:00
parent 9ca47e9792
commit 9a231b1d63
1 changed files with 52 additions and 24 deletions
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76
config.go
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@ -6,11 +6,16 @@ import (
"fmt"
"io/ioutil"
"os"
"os/user"
"path/filepath"
"github.com/haunt98/copy-go"
)
const (
homeSymbol = '~'
)
type Config struct {
// Read from file
Apps map[string]App `json:"apps"`
@ -26,6 +31,8 @@ type Path struct {
External string `json:"external"`
}
type copyFn func(from, to string) error
// Load config from file
func LoadConfig(path string) (result Config, err error) {
configPath := getConfigPath(path)
@ -57,22 +64,14 @@ func LoadConfig(path string) (result Config, err error) {
func (c *Config) Install() error {
for _, app := range c.Apps {
for _, file := range app.Files {
if err := os.RemoveAll(file.External); err != nil {
return fmt.Errorf("failed to remove %s: %w", file.External, err)
}
if err := copy.CopyFile(file.Internal, file.External); err != nil {
return fmt.Errorf("failed to copy from %s to %s: %w", file.Internal, file.External, err)
if err := removeAndCopy(file.Internal, file.External, copy.CopyFile); err != nil {
return fmt.Errorf("failed to remove and copy from %s to %s: %w", file.Internal, file.External)
}
}
for _, dir := range app.Dirs {
if err := os.RemoveAll(dir.External); err != nil {
return fmt.Errorf("failed to remove %s: %w", dir.External, err)
}
if err := copy.CopyDir(dir.Internal, dir.External); err != nil {
return fmt.Errorf("failed to copy from %s to %s: %w", dir.Internal, dir.External, err)
if err := removeAndCopy(dir.Internal, dir.External, copy.CopyFile); err != nil {
return fmt.Errorf("failed to remove and copy from %s to %s: %w", dir.Internal, dir.External)
}
}
}
@ -84,22 +83,14 @@ func (c *Config) Install() error {
func (c *Config) Update() error {
for _, app := range c.Apps {
for _, file := range app.Files {
if err := os.RemoveAll(file.Internal); err != nil {
return fmt.Errorf("failed to remove %s: %w", file.Internal, err)
}
if err := copy.CopyFile(file.External, file.Internal); err != nil {
return fmt.Errorf("failed to copy from %s to %s: %w", file.External, file.Internal, err)
if err := removeAndCopy(file.External, file.Internal, copy.CopyFile); err != nil {
return fmt.Errorf("failed to remove and copy from %s to %s: %w", file.External, file.Internal)
}
}
for _, dir := range app.Dirs {
if err := os.RemoveAll(dir.Internal); err != nil {
return fmt.Errorf("failed to remove %s: %w", dir.Internal, err)
}
if err := copy.CopyDir(dir.External, dir.Internal); err != nil {
return fmt.Errorf("failed to copy from %s to %s: %w", dir.External, dir.Internal, err)
if err := removeAndCopy(dir.External, dir.Internal, copy.CopyFile); err != nil {
return fmt.Errorf("failed to remove and copy from %s to %s: %w", dir.External, dir.Internal)
}
}
}
@ -110,3 +101,40 @@ func (c *Config) Update() error {
func getConfigPath(path string) string {
return filepath.Join(path, "configs/config.json")
}
func removeAndCopy(from, to string, fn copyFn) error {
newFrom, err := replaceHomeSymbol(from)
if err != nil {
return fmt.Errorf("failed to replace home symbol %s: %w", from, err)
}
newTo, err := replaceHomeSymbol(to)
if err != nil {
return fmt.Errorf("failed to replace home symbol %s: %w", to, err)
}
if err := os.RemoveAll(newTo); err != nil {
return fmt.Errorf("failed to remove %s: %w", newTo, err)
}
if err := fn(newFrom, newTo); err != nil {
return fmt.Errorf("failed to copy from %s to %s: %w", newFrom, newTo, err)
}
return nil
}
// replace ~
func replaceHomeSymbol(path string) (string, error) {
if path == "" || path[0] != homeSymbol {
return path, nil
}
currentUser, err := user.Current()
if err != nil {
return "", err
}
newPath := filepath.Join(currentUser.HomeDir, path[1:])
return newPath, nil
}