第 5 阶段：纠纷、通知与后台-1

backend/internal/model/audit_log.go

@@ -0,0 +1,24 @@
+package model
+
+import (
+	"time"
+
+	"gorm.io/datatypes"
+)
+
+type AuditLog struct {
+	ID        uint64         `gorm:"primaryKey" json:"id"`
+	ActorType string         `gorm:"size:32;not null" json:"actor_type"`
+	ActorID   uint64         `gorm:"not null;index" json:"actor_id"`
+	Action    string         `gorm:"size:64;not null" json:"action"`
+	BizType   string         `gorm:"size:32;not null" json:"biz_type"`
+	BizID     *uint64        `json:"biz_id"`
+	IP        string         `gorm:"size:64;not null;default:''" json:"ip"`
+	UserAgent string         `gorm:"size:512;not null;default:''" json:"user_agent"`
+	Detail    datatypes.JSON `json:"detail"`
+	CreatedAt time.Time      `json:"created_at"`
+}
+
+func (AuditLog) TableName() string {
+	return "audit_logs"
+}

backend/internal/model/dispute.go

@@ -0,0 +1,28 @@
+package model
+
+import (
+	"time"
+
+	"gorm.io/datatypes"
+)
+
+type Dispute struct {
+	ID                uint64         `gorm:"primaryKey" json:"id"`
+	OrderID           uint64         `gorm:"not null;index" json:"order_id"`
+	InitiatorID       uint64         `gorm:"not null" json:"initiator_id"`
+	TargetUserID      uint64         `gorm:"not null" json:"target_user_id"`
+	Type              string         `gorm:"size:32;not null" json:"type"`
+	Status            string         `gorm:"size:32;not null;default:'open'" json:"status"`
+	Description       string         `json:"description"`
+	EvidenceURLS      datatypes.JSON `json:"evidence_urls"`
+	ArbitrationResult string         `gorm:"size:32;not null;default:''" json:"arbitration_result"`
+	ArbitrationRemark string         `json:"arbitration_remark"`
+	HandledBy         *uint64        `json:"handled_by"`
+	HandledAt         *time.Time     `json:"handled_at"`
+	CreatedAt         time.Time      `json:"created_at"`
+	UpdatedAt         time.Time      `json:"updated_at"`
+}
+
+func (Dispute) TableName() string {
+	return "disputes"
+}

backend/internal/model/notification.go

@@ -0,0 +1,19 @@
+package model
+
+import "time"
+
+type Notification struct {
+	ID        uint64     `gorm:"primaryKey" json:"id"`
+	UserID    uint64     `gorm:"not null;index" json:"user_id"`
+	Type      string     `gorm:"size:32;not null" json:"type"`
+	Title     string     `gorm:"size:128;not null" json:"title"`
+	Content   string     `json:"content"`
+	BizType   string     `gorm:"size:32;not null;default:''" json:"biz_type"`
+	BizID     *uint64    `json:"biz_id"`
+	ReadAt    *time.Time `json:"read_at"`
+	CreatedAt time.Time  `json:"created_at"`
+}
+
+func (Notification) TableName() string {
+	return "notifications"
+}

backend/internal/model/system_config.go

@@ -0,0 +1,17 @@
+package model
+
+import "time"
+
+type SystemConfig struct {
+	ID          uint64    `gorm:"primaryKey" json:"id"`
+	Key         string    `gorm:"column:key;size:128;not null;uniqueIndex" json:"key"`
+	Value       string    `gorm:"column:value;type:text;not null" json:"value"`
+	Description string    `gorm:"size:255;not null;default:''" json:"description"`
+	UpdatedBy   *uint64   `json:"updated_by"`
+	CreatedAt   time.Time `json:"created_at"`
+	UpdatedAt   time.Time `json:"updated_at"`
+}
+
+func (SystemConfig) TableName() string {
+	return "system_configs"
+}