feat: 新增路由配置、交易处理和用户连击功能，并初始化相关服务与处理器

internal/handler/streak_handler.go

@@ -0,0 +1,73 @@
+package handler
+
+import (
+	"accounting-app/internal/service"
+	"accounting-app/pkg/api"
+
+	"github.com/gin-gonic/gin"
+)
+
+// StreakHandler handles HTTP requests for user streaks
+type StreakHandler struct {
+	streakService *service.StreakService
+}
+
+// NewStreakHandler creates a new StreakHandler instance
+func NewStreakHandler(streakService *service.StreakService) *StreakHandler {
+	return &StreakHandler{
+		streakService: streakService,
+	}
+}
+
+// GetStreak handles GET /api/v1/user/streak
+// Returns the user's current streak information
+func (h *StreakHandler) GetStreak(c *gin.Context) {
+	userID, exists := c.Get("user_id")
+	if !exists {
+		api.Unauthorized(c, "User not authenticated")
+		return
+	}
+
+	// Check and reset streak if needed (in case user hasn't opened app in a while)
+	if err := h.streakService.CheckAndResetStreak(userID.(uint)); err != nil {
+		// Log error but don't fail the request
+		// Just continue to get streak info
+	}
+
+	streakInfo, err := h.streakService.GetStreakInfo(userID.(uint))
+	if err != nil {
+		api.InternalError(c, "Failed to get streak info: "+err.Error())
+		return
+	}
+
+	api.Success(c, streakInfo)
+}
+
+// RecalculateStreak handles POST /api/v1/user/streak/recalculate
+// Recalculates the streak from transaction history (admin/debug use)
+func (h *StreakHandler) RecalculateStreak(c *gin.Context) {
+	userID, exists := c.Get("user_id")
+	if !exists {
+		api.Unauthorized(c, "User not authenticated")
+		return
+	}
+
+	if err := h.streakService.RecalculateStreak(userID.(uint)); err != nil {
+		api.InternalError(c, "Failed to recalculate streak: "+err.Error())
+		return
+	}
+
+	streakInfo, err := h.streakService.GetStreakInfo(userID.(uint))
+	if err != nil {
+		api.InternalError(c, "Failed to get streak info: "+err.Error())
+		return
+	}
+
+	api.Success(c, streakInfo)
+}
+
+// RegisterRoutes registers streak-related routes
+func (h *StreakHandler) RegisterRoutes(rg *gin.RouterGroup) {
+	rg.GET("/user/streak", h.GetStreak)
+	rg.POST("/user/streak/recalculate", h.RecalculateStreak)
+}