backend/internal/dto/report.go

package dto

import (
	"with_you/internal/model"
)

// ==================== 举报 DTOs ====================

// CreateReportRequest 创建举报请求
type CreateReportRequest struct {
	TargetType   string `json:"target_type" binding:"required,oneof=post comment message"`
	TargetID     string `json:"target_id" binding:"required"`
	Reason       string `json:"reason" binding:"required,oneof=spam inappropriate harassment misinformation other"`
	Description  string `json:"description" binding:"max=500"`
}

// ReportResponse 举报响应
type ReportResponse struct {
	ID          string `json:"id"`
	ReporterID  string `json:"reporter_id"`
	TargetType  string `json:"target_type"`
	TargetID    string `json:"target_id"`
	Reason      string `json:"reason"`
	Description string `json:"description,omitempty"`
	Status      string `json:"status"`
	CreatedAt   string `json:"created_at"`
}

// AdminReportListQuery 管理端举报列表查询参数
type AdminReportListQuery struct {
	Page       int    `form:"page" binding:"min=1"`
	PageSize   int    `form:"page_size" binding:"min=1,max=100"`
	TargetType string `form:"target_type" binding:"omitempty,oneof=post comment message"`
	Status     string `form:"status" binding:"omitempty,oneof=pending processing resolved rejected"`
	StartDate  string `form:"start_date" binding:"omitempty"`
	EndDate    string `form:"end_date" binding:"omitempty"`
	Keyword    string `form:"keyword" binding:"omitempty"`
}

// AdminReportListResponse 管理端举报列表响应
type AdminReportListResponse struct {
	ID          string `json:"id"`
	ReporterID  string `json:"reporter_id"`
	Reporter    *UserResponse `json:"reporter,omitempty"`
	TargetType  string `json:"target_type"`
	TargetID    string `json:"target_id"`
	Reason      string `json:"reason"`
	Description string `json:"description,omitempty"`
	Status      string `json:"status"`
	HandledBy   *string `json:"handled_by,omitempty"`
	Handler     *UserResponse `json:"handler,omitempty"`
	HandledAt   *string `json:"handled_at,omitempty"`
	Result      *string `json:"result,omitempty"`
	CreatedAt    string `json:"created_at"`
}

// AdminReportDetailResponse 管理端举报详情响应
type AdminReportDetailResponse struct {
	ID          string `json:"id"`
	ReporterID  string `json:"reporter_id"`
	Reporter    *UserResponse `json:"reporter"`
	TargetType  string `json:"target_type"`
	TargetID    string `json:"target_id"`
	Reason      string `json:"reason"`
	Description string `json:"description,omitempty"`
	Status      string `json:"status"`
	HandledBy   *string `json:"handled_by,omitempty"`
	Handler     *UserResponse `json:"handler,omitempty"`
	HandledAt   *string `json:"handled_at,omitempty"`
	Result      *string `json:"result,omitempty"`
	CreatedAt   string `json:"created_at"`
	
	// 被举报内容详情
	TargetContent *ReportTargetContent `json:"target_content,omitempty"`
}

// ReportTargetContent 被举报内容详情
type ReportTargetContent struct {
	Type    string      `json:"type"`     // post, comment, message
	ID      string      `json:"id"`
	Author  *UserResponse `json:"author,omitempty"`
	Content string      `json:"content,omitempty"`
	Title   string      `json:"title,omitempty"`    // 帖子标题
	Images  []string    `json:"images,omitempty"`   // 图片列表
	Status  string      `json:"status,omitempty"`   // 内容状态
	CreatedAt string    `json:"created_at,omitempty"`
}

// HandleReportRequest 处理举报请求
type HandleReportRequest struct {
	Action string `json:"action" binding:"required,oneof=approve reject"` // approve: 确认违规, reject: 驳回
	Result string `json:"result" binding:"max=500"` // 处理结果说明
}

// BatchHandleReportRequest 批量处理举报请求
type BatchHandleReportRequest struct {
	IDs    []string `json:"ids" binding:"required,min=1,max=100"`
	Action string   `json:"action" binding:"required,oneof=approve reject"`
	Result string    `json:"result" binding:"max=500"`
}

// AdminBatchHandleResponse 批量处理响应
type AdminBatchHandleResponse struct {
	SuccessCount int      `json:"success_count"`
	FailedCount   int      `json:"failed_count"`
	FailedIDs     []string `json:"failed_ids,omitempty"`
}

// ==================== 转换函数 ====================

func baseAdminReportFields(report *model.Report) (string, string) {
	reason := string(report.Reason)
	status := string(report.Status)
	return reason, status
}

// ConvertReportToResponse 将 Report 模型转换为响应
func ConvertReportToResponse(report *model.Report) *ReportResponse {
	return &ReportResponse{
		ID:          report.ID,
		ReporterID:  report.ReporterID,
		TargetType:  string(report.TargetType),
		TargetID:    report.TargetID,
		Reason:      string(report.Reason),
		Description: report.Description,
		Status:      string(report.Status),
		CreatedAt:   FormatTime(report.CreatedAt),
	}
}

func fillAdminReportCommon(resp *AdminReportListResponse, report *model.Report, reporter *model.User, handler *model.User) {
	if reporter != nil {
		resp.Reporter = ConvertUserToResponse(reporter)
	}
	if handler != nil {
		resp.Handler = ConvertUserToResponse(handler)
	}
	if report.HandledAt != nil {
		handledAt := FormatTime(*report.HandledAt)
		resp.HandledAt = &handledAt
	}
}

// ConvertReportToAdminListResponse 将 Report 转换为管理端列表响应
func ConvertReportToAdminListResponse(report *model.Report, reporter *model.User, handler *model.User) *AdminReportListResponse {
	resp := &AdminReportListResponse{
		ID:          report.ID,
		ReporterID:  report.ReporterID,
		TargetType:  string(report.TargetType),
		TargetID:    report.TargetID,
		Reason:      string(report.Reason),
		Description: report.Description,
		Status:      string(report.Status),
		HandledBy:   report.HandledBy,
		Result:      report.Result,
		CreatedAt:   FormatTime(report.CreatedAt),
	}
	fillAdminReportCommon(resp, report, reporter, handler)
	return resp
}

// ConvertReportToAdminDetailResponse 将 Report 转换为管理端详情响应
func ConvertReportToAdminDetailResponse(report *model.Report, reporter *model.User, handler *model.User, targetContent *ReportTargetContent) *AdminReportDetailResponse {
	resp := &AdminReportDetailResponse{
		ID:            report.ID,
		ReporterID:    report.ReporterID,
		TargetType:    string(report.TargetType),
		TargetID:      report.TargetID,
		Reason:        string(report.Reason),
		Description:   report.Description,
		Status:        string(report.Status),
		HandledBy:     report.HandledBy,
		Result:        report.Result,
		CreatedAt:     FormatTime(report.CreatedAt),
		TargetContent: targetContent,
	}
	if reporter != nil {
		resp.Reporter = ConvertUserToResponse(reporter)
	}
	if handler != nil {
		resp.Handler = ConvertUserToResponse(handler)
	}
	if report.HandledAt != nil {
		handledAt := FormatTime(*report.HandledAt)
		resp.HandledAt = &handledAt
	}
	return resp
}