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|
package config
import (
"encoding/json"
"errors"
"fmt"
"os"
"path/filepath"
"reflect"
)
type Config struct {
PrivateKeyPath string `json:"private_key_path"`
InsertModeTabToSpace bool `json:"insert_mode_tab_to_space"`
InsertModeSpacesPerTab uint8 `json:"insert_mode_spaces_per_tab"`
}
func Default() Config {
return Config{
PrivateKeyPath: "",
InsertModeTabToSpace: true,
InsertModeSpacesPerTab: 4,
}
}
func Verify(config *Config) error {
return nil
}
var (
config = Config{}
Dir string
ConfigFile string
)
func Load() error {
userConfigDir, err := os.UserConfigDir()
if err != nil {
return err
}
Dir = filepath.Join(userConfigDir, "eko")
err = os.MkdirAll(Dir, 0o750)
if err != nil {
return err
}
ConfigFile = filepath.Join(Dir, "config.json")
contents, err := os.ReadFile(ConfigFile) // #nosec 304
if errors.Is(err, os.ErrNotExist) {
config = Default()
return write()
}
if err != nil {
return err
}
var rawMap map[string]json.RawMessage
if err := json.Unmarshal(contents, &rawMap); err != nil {
return err
}
defaultVal := reflect.ValueOf(Default())
finalConfig := reflect.New(defaultVal.Type()).Elem()
finalConfig.Set(defaultVal)
for i := 0; i < defaultVal.NumField(); i++ {
field := defaultVal.Type().Field(i)
jsonTag := field.Tag.Get("json")
if jsonTag == "" {
jsonTag = field.Name
}
rawValue, found := rawMap[jsonTag]
fieldValue := finalConfig.Field(i)
if !found || !fieldValue.CanAddr() {
continue
}
err := json.Unmarshal(rawValue, fieldValue.Addr().Interface())
if err != nil {
return fmt.Errorf("error unmarshaling field %s: %w", field.Name, err)
}
}
config = finalConfig.Interface().(Config)
err = Verify(&config)
if err != nil {
return err
}
return write()
}
func write() error {
b, err := json.MarshalIndent(config, "", " ")
if err != nil {
return err
}
return os.WriteFile(ConfigFile, b, 0o600)
}
func Read() Config {
return config
}
func Use(f func(config *Config)) error {
f(&config)
return write()
}
|
