fix(chat): 提升二维码 OCR 稳定性

backend/internal/modules/chat/repository.go

@@ -1,27 +1,81 @@
 package chat
 
 import (
+	"context"
 	"errors"
+	"net/http"
+	"time"
+
 	"github.com/redis/go-redis/v9"
+	"go.uber.org/zap"
 	"gorm.io/gorm"
 	"gorm.io/gorm/clause"
 	"hfb_sys/backend/internal/model"
 	"hfb_sys/backend/internal/modules/chathub"
-	"time"
 )
 
 type Repository struct {
-	db    *gorm.DB
-	hub   *chathub.Hub
-	redis *redis.Client
+	db            *gorm.DB
+	hub           *chathub.Hub
+	redis         *redis.Client
+	logger        *zap.Logger
+	ocrHTTPClient *http.Client
+	ocrGate       *ocrRequestGate
+	ocrSleep      func(context.Context, time.Duration) error
 }
 
 const (
 	defaultSupportRoleCode = "cs"
 )
 
-func NewRepository(db *gorm.DB, hub *chathub.Hub, redis *redis.Client) *Repository {
-	return &Repository{db: db, hub: hub, redis: redis}
+type RepositoryOption func(*Repository)
+
+func WithLogger(logger *zap.Logger) RepositoryOption {
+	return func(repo *Repository) {
+		if logger != nil {
+			repo.logger = logger
+		}
+	}
+}
+
+func withOCRHTTPClient(client *http.Client) RepositoryOption {
+	return func(repo *Repository) {
+		if client != nil {
+			repo.ocrHTTPClient = client
+		}
+	}
+}
+
+func withOCRGate(gate *ocrRequestGate) RepositoryOption {
+	return func(repo *Repository) {
+		if gate != nil {
+			repo.ocrGate = gate
+		}
+	}
+}
+
+func withOCRSleep(sleep func(context.Context, time.Duration) error) RepositoryOption {
+	return func(repo *Repository) {
+		if sleep != nil {
+			repo.ocrSleep = sleep
+		}
+	}
+}
+
+func NewRepository(db *gorm.DB, hub *chathub.Hub, redis *redis.Client, options ...RepositoryOption) *Repository {
+	repo := &Repository{
+		db:            db,
+		hub:           hub,
+		redis:         redis,
+		logger:        zap.NewNop(),
+		ocrHTTPClient: ocrHTTPClient,
+		ocrGate:       sharedOCRRequestGate,
+		ocrSleep:      sleepWithContext,
+	}
+	for _, option := range options {
+		option(repo)
+	}
+	return repo
 }
 func EnsureOrderConversation(tx *gorm.DB, order model.RentalOrder) (*model.ChatConversation, error) {
 	var existing model.ChatConversation