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refactor into struct composition (inheritance)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| package models | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "errors" | ||
| "os" | ||
| "path" | ||
|
|
||
| "github.com/cabaalexander/save-manager/backend/utils" | ||
| ) | ||
|
|
||
| type Json[T any] struct { | ||
| Filename string | ||
| JsonData T | ||
| } | ||
|
|
||
| func (j *Json[T]) CreateConfigJsonIfNoExists() (string, error) { | ||
| settingsJson, errSettingsJson := j.getConfigJson(j.Filename) | ||
| if errSettingsJson != nil { | ||
| return "", errSettingsJson | ||
| } | ||
| jsonExists, errJsonExists := utils.Exists(settingsJson) | ||
| if errJsonExists != nil { | ||
| return "", errJsonExists | ||
| } | ||
| if !jsonExists { | ||
| var data T | ||
| j.writeStructTo(j.Filename, data) | ||
| } | ||
| return settingsJson, nil | ||
| } | ||
|
|
||
| func (j *Json[T]) ReadData() (*T, error) { | ||
| settingsJson, err := j.readConfigFrom(j.Filename) | ||
| if err != nil { | ||
| return settingsJson, err | ||
| } | ||
| return settingsJson, nil | ||
| } | ||
|
|
||
| func (j *Json[T]) UpdateJson() error { | ||
| return j.writeStructTo(j.Filename, j.JsonData) | ||
| } | ||
|
|
||
| func (j *Json[T]) getConfigJson(filename string) (string, error) { | ||
| err := j.createConfigDirIfNoExist() | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| if filename == "" { | ||
| return "", errors.New("filename cannot be empty") | ||
| } | ||
| configDir, err := utils.GetAppConfigDir() | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| settingsJson := path.Join(configDir, filename) | ||
| return settingsJson, nil | ||
| } | ||
|
|
||
| func (j *Json[T]) createConfigDirIfNoExist() error { | ||
| appConfigPath, err := utils.GetAppConfigDir() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| dirExists, errDirExists := utils.Exists(appConfigPath) | ||
| if errDirExists != nil { | ||
| return errDirExists | ||
| } | ||
| if !dirExists { | ||
| os.Mkdir(appConfigPath, os.ModePerm) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func (j *Json[T]) readConfigFrom(filename string) (*T, error) { | ||
| var defalutData T | ||
| path, err := j.getConfigJson(filename) | ||
| if err != nil { | ||
| return &defalutData, err | ||
| } | ||
| jsonByte, errJsonByte := os.ReadFile(path) | ||
| if errJsonByte != nil { | ||
| return &defalutData, errJsonByte | ||
| } | ||
| var data T | ||
| errData := json.Unmarshal(jsonByte, &data) | ||
| if errData != nil { | ||
| return &defalutData, errData | ||
| } | ||
| return &data, nil | ||
| } | ||
|
|
||
| func (j *Json[T]) writeStructTo(filename string, jsonStruct T) error { | ||
| path, err := j.getConfigJson(filename) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| jsonByte, errJsonByte := json.Marshal(jsonStruct) | ||
| if errJsonByte != nil { | ||
| return errJsonByte | ||
| } | ||
| return os.WriteFile(path, jsonByte, 0644) | ||
| } |
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