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This commit is contained in:
268
backend/internal/service/merchant.go
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268
backend/internal/service/merchant.go
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package service
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import (
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"context"
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"crypto/rand"
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"encoding/hex"
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"errors"
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"log/slog"
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"time"
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"pay-bridge/internal/channel"
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"pay-bridge/internal/model"
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"pay-bridge/internal/repository"
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)
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// merchantRepo 定义 MerchantService 所需的数据访问方法，便于测试时注入 mock
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type merchantRepo interface {
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Create(ctx context.Context, m *model.Merchant) error
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GetByMerchantID(ctx context.Context, merchantID string) (*model.Merchant, error)
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GetByMerchantIDAndAppID(ctx context.Context, merchantID, appID string) (*model.Merchant, error)
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UpdateStatus(ctx context.Context, merchantID string, status model.MerchantStatus, updates map[string]any) error
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List(ctx context.Context, status model.MerchantStatus, limit, offset int) ([]*model.Merchant, error)
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ListByAppID(ctx context.Context, appID string, status model.MerchantStatus, limit, offset int) ([]*model.Merchant, error)
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ListAnomalous(ctx context.Context) ([]*model.Merchant, error)
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CreateApplication(ctx context.Context, app *model.MerchantApplication) error
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GetLatestApplication(ctx context.Context, merchantID string) (*model.MerchantApplication, error)
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GetApprovedApplicationByChannel(ctx context.Context, merchantID, channelCode string) (*model.MerchantApplication, error)
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UpdateApplication(ctx context.Context, applicationID string, updates map[string]any) error
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}
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// MerchantService 商户进件与管理服务
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type MerchantService struct {
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merchantRepo merchantRepo
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channelSvc *ChannelService
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}
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func NewMerchantService(
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merchantRepo *repository.MerchantRepository,
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channelSvc *ChannelService,
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) *MerchantService {
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return &MerchantService{
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merchantRepo: merchantRepo,
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channelSvc: channelSvc,
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}
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}
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func genApplicationID() string {
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b := make([]byte, 16)
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rand.Read(b)
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return "APP" + hex.EncodeToString(b)[:16]
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}
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// Apply 提交商户进件申请
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// bizContent 为完整的入网申请业务参数（对应 001 文档的 biz_content 结构）
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func (s *MerchantService) Apply(ctx context.Context, merchantID, channelCode string, bizContent map[string]any) (string, error) {
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merchant, err := s.merchantRepo.GetByMerchantID(ctx, merchantID)
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if err != nil {
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return "", err
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}
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if merchant == nil {
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return "", errors.New("merchant not found")
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}
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if merchant.Status == model.MerchantStatusFrozen {
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return "", errors.New("merchant is frozen")
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}
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ch, err := s.channelSvc.GetChannel(ctx, "", channelCode)
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if err != nil {
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return "", err
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}
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resp, err := ch.MerchantApply(ctx, &channel.MerchantApplyReq{
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MerchantID: merchantID,
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BizContent: bizContent,
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})
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if err != nil {
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return "", err
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}
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applicationID := genApplicationID()
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app := &model.MerchantApplication{
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ApplicationID: applicationID,
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MerchantID: merchantID,
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ChannelCode: channelCode,
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SubmitData: model.JSONMap(bizContent),
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AuditStatus: model.AuditStatusSubmitting,
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SubmittedAt: time.Now(),
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}
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// 持久化渠道返回的 request_no，用于后续查询/修改
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if resp.RequestNo != "" {
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app.SubmitData["_channel_request_no"] = resp.RequestNo
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}
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if err := s.merchantRepo.CreateApplication(ctx, app); err != nil {
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return "", err
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}
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slog.InfoContext(ctx, "merchant application submitted",
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"merchant_id", merchantID,
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"application_id", applicationID,
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"channel_code", channelCode,
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"channel_request_no", resp.RequestNo,
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)
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return applicationID, nil
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}
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// UploadFile 上传文件到指定渠道，返回渠道 file_id
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func (s *MerchantService) UploadFile(ctx context.Context, channelCode string, req *channel.UploadFileReq) (string, error) {
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ch, err := s.channelSvc.GetChannel(ctx, "", channelCode)
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if err != nil {
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return "", err
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}
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resp, err := ch.UploadFile(ctx, req)
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if err != nil {
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return "", err
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}
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return resp.FileID, nil
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}
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// QueryAuditStatus 查询进件审核状态
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func (s *MerchantService) QueryAuditStatus(ctx context.Context, merchantID string) (*model.MerchantApplication, error) {
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app, err := s.merchantRepo.GetLatestApplication(ctx, merchantID)
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if err != nil {
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return nil, err
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}
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if app == nil {
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return nil, nil
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}
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// 如果仍在审核中，向渠道查询最新状态
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if app.AuditStatus == model.AuditStatusSubmitting || app.AuditStatus == model.AuditStatusReviewing {
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// 从 submit_data 中读取渠道返回的 request_no
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channelRequestNo, _ := app.SubmitData["_channel_request_no"].(string)
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if channelRequestNo != "" {
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ch, err := s.channelSvc.GetChannel(ctx, "", app.ChannelCode)
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if err == nil {
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resp, err := ch.QueryMerchantStatus(ctx, channelRequestNo)
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if err == nil {
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merchant, _ := s.merchantRepo.GetByMerchantID(ctx, merchantID)
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s.syncMerchantStatus(ctx, merchantID, app.ApplicationID, merchant, resp)
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app, _ = s.merchantRepo.GetLatestApplication(ctx, merchantID)
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}
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}
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}
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}
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return app, nil
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}
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// syncMerchantStatus 同步渠道返回的审核状态到本地
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func (s *MerchantService) syncMerchantStatus(ctx context.Context, merchantID, applicationID string,
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merchant *model.Merchant, resp *channel.MerchantStatusResp) {
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now := time.Now()
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appUpdates := map[string]any{}
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switch resp.Status {
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case "APPROVED":
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appUpdates["audit_status"] = model.AuditStatusApproved
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appUpdates["audited_at"] = now
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if resp.ChannelMerchantID != "" {
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appUpdates["channel_merchant_id"] = resp.ChannelMerchantID
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}
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s.merchantRepo.UpdateStatus(ctx, merchantID, model.MerchantStatusActive, nil)
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case "REJECTED":
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appUpdates["audit_status"] = model.AuditStatusRejected
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appUpdates["reject_reason"] = resp.RejectReason
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appUpdates["audited_at"] = now
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s.merchantRepo.UpdateStatus(ctx, merchantID, model.MerchantStatusRejected, nil)
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case "REVIEWING":
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appUpdates["audit_status"] = model.AuditStatusReviewing
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case "FROZEN":
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s.merchantRepo.UpdateStatus(ctx, merchantID, model.MerchantStatusFrozen, nil)
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}
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if len(appUpdates) > 0 {
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s.merchantRepo.UpdateApplication(ctx, applicationID, appUpdates)
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}
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}
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// GetChannelMerchantID 返回指定商户在指定渠道进件审核通过后的渠道商户ID
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// 若该商户未在该渠道进件或审核未通过，返回空字符串
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func (s *MerchantService) GetChannelMerchantID(ctx context.Context, merchantID, channelCode string) (string, error) {
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app, err := s.merchantRepo.GetApprovedApplicationByChannel(ctx, merchantID, channelCode)
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if err != nil {
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return "", err
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}
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if app == nil {
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return "", nil
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}
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return app.ChannelMerchantID, nil
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}
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// CreateMerchantForApp 业务侧创建商户，强制绑定 appID
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func (s *MerchantService) CreateMerchantForApp(ctx context.Context, appID string, m *model.Merchant) error {
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m.AppID = appID
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return s.merchantRepo.Create(ctx, m)
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}
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// GetMerchantForApp 业务侧查询，校验 appID 归属
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func (s *MerchantService) GetMerchantForApp(ctx context.Context, appID, merchantID string) (*model.Merchant, error) {
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m, err := s.merchantRepo.GetByMerchantIDAndAppID(ctx, merchantID, appID)
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if err != nil {
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return nil, err
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}
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if m == nil {
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return nil, errors.New("30001") // merchant not found
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}
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return m, nil
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}
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// ListMerchantsForApp 业务侧列表，只返回该 appID 下的商户
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func (s *MerchantService) ListMerchantsForApp(ctx context.Context, appID string, status model.MerchantStatus, limit, offset int) ([]*model.Merchant, error) {
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return s.merchantRepo.ListByAppID(ctx, appID, status, limit, offset)
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}
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// ApplyForApp 业务侧进件，校验 appID 归属后委托 Apply
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func (s *MerchantService) ApplyForApp(ctx context.Context, appID, merchantID, channelCode string, bizContent map[string]any) (string, error) {
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if _, err := s.GetMerchantForApp(ctx, appID, merchantID); err != nil {
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return "", err
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}
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return s.Apply(ctx, merchantID, channelCode, bizContent)
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}
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// QueryAuditStatusForApp 业务侧查审核状态，校验 appID 归属
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func (s *MerchantService) QueryAuditStatusForApp(ctx context.Context, appID, merchantID string) (*model.MerchantApplication, error) {
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if _, err := s.GetMerchantForApp(ctx, appID, merchantID); err != nil {
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return nil, err
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}
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return s.QueryAuditStatus(ctx, merchantID)
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}
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// CheckAnomalies 检查状态异常的商户（由 cron 调用）
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func (s *MerchantService) CheckAnomalies(ctx context.Context) error {
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merchants, err := s.merchantRepo.ListAnomalous(ctx)
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if err != nil {
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return err
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}
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slog.InfoContext(ctx, "anomalous merchants found", "count", len(merchants))
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// 实际业务中可在此发送告警通知
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return nil
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}
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// CreateMerchant 创建商户基础信息
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func (s *MerchantService) CreateMerchant(ctx context.Context, m *model.Merchant) error {
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return s.merchantRepo.Create(ctx, m)
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}
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// GetMerchant 查询商户信息
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func (s *MerchantService) GetMerchant(ctx context.Context, merchantID string) (*model.Merchant, error) {
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return s.merchantRepo.GetByMerchantID(ctx, merchantID)
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}
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// ListMerchants 查询商户列表
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func (s *MerchantService) ListMerchants(ctx context.Context, status model.MerchantStatus, limit, offset int) ([]*model.Merchant, error) {
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return s.merchantRepo.List(ctx, status, limit, offset)
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}
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// FreezeMerchant 冻结商户
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func (s *MerchantService) FreezeMerchant(ctx context.Context, merchantID string) error {
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return s.merchantRepo.UpdateStatus(ctx, merchantID, model.MerchantStatusFrozen, nil)
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}
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// UnfreezeMerchant 解冻商户
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func (s *MerchantService) UnfreezeMerchant(ctx context.Context, merchantID string) error {
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return s.merchantRepo.UpdateStatus(ctx, merchantID, model.MerchantStatusActive, nil)
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}
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