refactor: 自定义业务错误

backend/internal/repository/setting_repo.go

@@ -2,35 +2,38 @@ package repository
 
 import (
 	"context"
-	"github.com/Wei-Shaw/sub2api/internal/model"
 	"time"
 
+	"github.com/Wei-Shaw/sub2api/internal/service"
+
+	"github.com/Wei-Shaw/sub2api/internal/model"
+
 	"gorm.io/gorm"
 	"gorm.io/gorm/clause"
 )
 
 // SettingRepository 系统设置数据访问层
-type SettingRepository struct {
+type settingRepository struct {
 	db *gorm.DB
 }
 
 // NewSettingRepository 创建系统设置仓库实例
-func NewSettingRepository(db *gorm.DB) *SettingRepository {
-	return &SettingRepository{db: db}
+func NewSettingRepository(db *gorm.DB) service.SettingRepository {
+	return &settingRepository{db: db}
 }
 
 // Get 根据Key获取设置值
-func (r *SettingRepository) Get(ctx context.Context, key string) (*model.Setting, error) {
+func (r *settingRepository) Get(ctx context.Context, key string) (*model.Setting, error) {
 	var setting model.Setting
 	err := r.db.WithContext(ctx).Where("key = ?", key).First(&setting).Error
 	if err != nil {
-		return nil, err
+		return nil, translatePersistenceError(err, service.ErrSettingNotFound, nil)
 	}
 	return &setting, nil
 }
 
 // GetValue 获取设置值字符串
-func (r *SettingRepository) GetValue(ctx context.Context, key string) (string, error) {
+func (r *settingRepository) GetValue(ctx context.Context, key string) (string, error) {
 	setting, err := r.Get(ctx, key)
 	if err != nil {
 		return "", err
@@ -39,7 +42,7 @@ func (r *SettingRepository) GetValue(ctx context.Context, key string) (string, e
 }
 
 // Set 设置值（存在则更新，不存在则创建）
-func (r *SettingRepository) Set(ctx context.Context, key, value string) error {
+func (r *settingRepository) Set(ctx context.Context, key, value string) error {
 	setting := &model.Setting{
 		Key:       key,
 		Value:     value,
@@ -53,7 +56,7 @@ func (r *SettingRepository) Set(ctx context.Context, key, value string) error {
 }
 
 // GetMultiple 批量获取设置
-func (r *SettingRepository) GetMultiple(ctx context.Context, keys []string) (map[string]string, error) {
+func (r *settingRepository) GetMultiple(ctx context.Context, keys []string) (map[string]string, error) {
 	var settings []model.Setting
 	err := r.db.WithContext(ctx).Where("key IN ?", keys).Find(&settings).Error
 	if err != nil {
@@ -68,7 +71,7 @@ func (r *SettingRepository) GetMultiple(ctx context.Context, keys []string) (map
 }
 
 // SetMultiple 批量设置值
-func (r *SettingRepository) SetMultiple(ctx context.Context, settings map[string]string) error {
+func (r *settingRepository) SetMultiple(ctx context.Context, settings map[string]string) error {
 	return r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
 		for key, value := range settings {
 			setting := &model.Setting{
@@ -88,7 +91,7 @@ func (r *SettingRepository) SetMultiple(ctx context.Context, settings map[string
 }
 
 // GetAll 获取所有设置
-func (r *SettingRepository) GetAll(ctx context.Context) (map[string]string, error) {
+func (r *settingRepository) GetAll(ctx context.Context) (map[string]string, error) {
 	var settings []model.Setting
 	err := r.db.WithContext(ctx).Find(&settings).Error
 	if err != nil {
@@ -103,6 +106,6 @@ func (r *SettingRepository) GetAll(ctx context.Context) (map[string]string, erro
 }
 
 // Delete 删除设置
-func (r *SettingRepository) Delete(ctx context.Context, key string) error {
+func (r *settingRepository) Delete(ctx context.Context, key string) error {
 	return r.db.WithContext(ctx).Where("key = ?", key).Delete(&model.Setting{}).Error
 }