第 5 阶段：纠纷、通知与后台-1
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yml
@@ -0,0 +1,18 @@
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package systemconfig
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import "time"
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type ConfigDTO struct {
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ID uint64 `json:"id"`
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Key string `json:"key"`
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Value string `json:"value"`
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Description string `json:"description"`
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UpdatedBy *uint64 `json:"updated_by"`
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CreatedAt time.Time `json:"created_at"`
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UpdatedAt time.Time `json:"updated_at"`
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}
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type UpdateRequest struct {
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Value string `json:"value" binding:"required"`
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Description string `json:"description"`
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}
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@@ -0,0 +1,71 @@
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package systemconfig
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import (
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"errors"
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"net/http"
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"hfb_sys/backend/internal/middleware"
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"hfb_sys/backend/pkg/response"
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"github.com/gin-gonic/gin"
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)
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type Handler struct {
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service *Service
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}
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func NewHandler(service *Service) *Handler {
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return &Handler{service: service}
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}
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func (h *Handler) List(c *gin.Context) {
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items, err := h.service.List()
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if err != nil {
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writeConfigError(c, err)
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return
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}
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response.OK(c, gin.H{"items": items})
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}
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func (h *Handler) Update(c *gin.Context) {
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userID, ok := currentUserID(c)
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if !ok {
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response.Unauthorized(c, "缺少用户上下文")
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return
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}
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key := c.Param("key")
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var req UpdateRequest
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if err := c.ShouldBindJSON(&req); err != nil {
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response.BadRequest(c, "配置值不能为空")
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return
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}
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item, err := h.service.Update(userID, key, req, AuditMeta{
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IP: c.ClientIP(),
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UserAgent: c.GetHeader("User-Agent"),
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})
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if err != nil {
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writeConfigError(c, err)
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return
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}
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response.OK(c, item)
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}
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func currentUserID(c *gin.Context) (uint64, bool) {
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value, ok := c.Get(middleware.ContextUserID)
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if !ok {
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return 0, false
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}
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userID, ok := value.(uint64)
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return userID, ok
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}
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func writeConfigError(c *gin.Context, err error) {
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switch {
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case errors.Is(err, ErrDependencyUnavailable):
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response.ServiceUnavailable(c, "数据库未连接")
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case errors.Is(err, ErrInvalidConfig):
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response.BadRequest(c, "配置不符合规则")
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default:
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response.Error(c, http.StatusInternalServerError, "internal_error", "系统配置服务暂时不可用")
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}
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}
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@@ -0,0 +1,154 @@
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package systemconfig
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import (
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"encoding/json"
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"errors"
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"hfb_sys/backend/internal/model"
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"gorm.io/datatypes"
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"gorm.io/gorm"
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"gorm.io/gorm/clause"
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)
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type Repository struct {
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db *gorm.DB
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}
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type AuditMeta struct {
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IP string
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UserAgent string
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}
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type defaultConfig struct {
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Key string
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Value string
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Description string
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}
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var defaultConfigs = []defaultConfig{
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{Key: "handoff.owner_submit_timeout_minutes", Value: "30", Description: "号主待交接超时分钟数"},
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{Key: "handoff.renter_confirm_timeout_minutes", Value: "30", Description: "租客待确认收号超时分钟数"},
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{Key: "handoff.owner_return_confirm_timeout_minutes", Value: "120", Description: "号主待确认归还超时分钟数"},
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{Key: "order.return_overdue_grace_minutes", Value: "10", Description: "租期到期后归还宽限分钟数"},
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{Key: "deposit.min_amount", Value: "50", Description: "发布租号最低押金"},
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{Key: "risk.sms_limit_per_phone_hour", Value: "5", Description: "单手机号每小时短信验证码次数"},
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{Key: "risk.sms_limit_per_ip_hour", Value: "20", Description: "单 IP 每小时短信验证码次数"},
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{Key: "realname.required_for_order", Value: "false", Description: "下单是否必须完成实名认证"},
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{Key: "settlement.platform_fee_rate", Value: "0.00", Description: "平台抽成比例"},
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{Key: "settlement.owner_cycle_days", Value: "0", Description: "号主结算周期天数"},
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{Key: "withdraw.min_amount", Value: "100", Description: "提现最低金额预留"},
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}
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func NewRepository(db *gorm.DB) *Repository {
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return &Repository{db: db}
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}
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func (r *Repository) List() ([]ConfigDTO, error) {
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if err := r.ensureDefaults(); err != nil {
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return nil, err
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}
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var rows []model.SystemConfig
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if err := r.db.Order("`key` ASC").Find(&rows).Error; err != nil {
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return nil, err
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}
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items := make([]ConfigDTO, 0, len(rows))
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for _, row := range rows {
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items = append(items, toDTO(row))
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}
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return items, nil
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}
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func (r *Repository) Update(actorID uint64, key string, req UpdateRequest, meta AuditMeta) (*ConfigDTO, error) {
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var row model.SystemConfig
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err := r.db.Transaction(func(tx *gorm.DB) error {
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if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).Where("`key` = ?", key).First(&row).Error; err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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row = model.SystemConfig{
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Key: key,
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Value: req.Value,
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Description: req.Description,
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UpdatedBy: &actorID,
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}
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if err := tx.Create(&row).Error; err != nil {
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return err
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}
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} else {
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return err
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}
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} else {
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before := row.Value
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row.Value = req.Value
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if req.Description != "" {
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row.Description = req.Description
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}
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row.UpdatedBy = &actorID
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if err := tx.Save(&row).Error; err != nil {
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return err
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}
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if err := appendAuditLog(tx, actorID, "system_config.update", row.ID, meta, map[string]any{
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"key": row.Key,
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"before": before,
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"after": row.Value,
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}); err != nil {
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return err
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}
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return nil
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}
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return appendAuditLog(tx, actorID, "system_config.create", row.ID, meta, map[string]any{
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"key": row.Key,
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"value": row.Value,
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})
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})
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if err != nil {
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return nil, err
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}
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dto := toDTO(row)
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return &dto, nil
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}
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func (r *Repository) ensureDefaults() error {
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return r.db.Transaction(func(tx *gorm.DB) error {
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for _, item := range defaultConfigs {
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row := model.SystemConfig{
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Key: item.Key,
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Value: item.Value,
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Description: item.Description,
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}
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if err := tx.Clauses(clause.OnConflict{DoNothing: true}).Create(&row).Error; err != nil {
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return err
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}
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}
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return nil
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})
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}
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func appendAuditLog(tx *gorm.DB, actorID uint64, action string, bizID uint64, meta AuditMeta, detail map[string]any) error {
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raw, err := json.Marshal(detail)
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if err != nil {
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return err
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}
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row := model.AuditLog{
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ActorType: "admin",
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ActorID: actorID,
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Action: action,
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BizType: "system_config",
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BizID: &bizID,
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IP: meta.IP,
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UserAgent: meta.UserAgent,
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Detail: datatypes.JSON(raw),
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}
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return tx.Create(&row).Error
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}
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func toDTO(row model.SystemConfig) ConfigDTO {
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return ConfigDTO{
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ID: row.ID,
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Key: row.Key,
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Value: row.Value,
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Description: row.Description,
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UpdatedBy: row.UpdatedBy,
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CreatedAt: row.CreatedAt,
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UpdatedAt: row.UpdatedAt,
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}
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}
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@@ -0,0 +1,33 @@
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package systemconfig
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import "errors"
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var (
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ErrDependencyUnavailable = errors.New("dependency unavailable")
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ErrInvalidConfig = errors.New("invalid config")
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)
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type Service struct {
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repo *Repository
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}
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func NewService(repo *Repository) *Service {
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return &Service{repo: repo}
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}
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func (s *Service) List() ([]ConfigDTO, error) {
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if s.repo == nil {
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return nil, ErrDependencyUnavailable
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}
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return s.repo.List()
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}
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func (s *Service) Update(actorID uint64, key string, req UpdateRequest, meta AuditMeta) (*ConfigDTO, error) {
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if s.repo == nil {
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return nil, ErrDependencyUnavailable
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}
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if key == "" || req.Value == "" {
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return nil, ErrInvalidConfig
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}
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return s.repo.Update(actorID, key, req, meta)
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}
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