refactor: Update service and repository methods to use context

- Refactored multiple service and repository methods to accept context as a parameter, enhancing consistency and enabling better control over request lifecycles.
- Updated handlers to utilize context in method calls, improving error handling and performance.
- Cleaned up Dockerfile by removing unnecessary whitespace.

internal/handler/swagger.go

@@ -1,15 +1,95 @@
 package handler
 
 import (
+	"context"
+	"errors"
 	"net/http"
+	"time"
+
+	"carrotskin/pkg/database"
+	"carrotskin/pkg/redis"
 
 	"github.com/gin-gonic/gin"
 )
 
-// HealthCheck 健康检查
+// HealthCheck 健康检查，检查依赖服务状态
 func HealthCheck(c *gin.Context) {
-	c.JSON(http.StatusOK, gin.H{
-		"status":  "ok",
-		"message": "CarrotSkin API is running",
+	ctx, cancel := context.WithTimeout(c.Request.Context(), 5*time.Second)
+	defer cancel()
+
+	checks := make(map[string]string)
+	status := "ok"
+
+	// 检查数据库
+	if err := checkDatabase(ctx); err != nil {
+		checks["database"] = "unhealthy: " + err.Error()
+		status = "degraded"
+	} else {
+		checks["database"] = "healthy"
+	}
+
+	// 检查Redis
+	if err := checkRedis(ctx); err != nil {
+		checks["redis"] = "unhealthy: " + err.Error()
+		status = "degraded"
+	} else {
+		checks["redis"] = "healthy"
+	}
+
+	// 根据状态返回相应的HTTP状态码
+	httpStatus := http.StatusOK
+	if status == "degraded" {
+		httpStatus = http.StatusServiceUnavailable
+	}
+
+	c.JSON(httpStatus, gin.H{
+		"status":    status,
+		"message":   "CarrotSkin API health check",
+		"checks":    checks,
+		"timestamp": time.Now().Unix(),
 	})
 }
+
+// checkDatabase 检查数据库连接
+func checkDatabase(ctx context.Context) error {
+	db, err := database.GetDB()
+	if err != nil {
+		return err
+	}
+
+	sqlDB, err := db.DB()
+	if err != nil {
+		return err
+	}
+
+	// 使用Ping检查连接
+	if err := sqlDB.PingContext(ctx); err != nil {
+		return err
+	}
+
+	// 执行简单查询验证
+	var result int
+	if err := db.WithContext(ctx).Raw("SELECT 1").Scan(&result).Error; err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// checkRedis 检查Redis连接
+func checkRedis(ctx context.Context) error {
+	client, err := redis.GetClient()
+	if err != nil {
+		return err
+	}
+	if client == nil {
+		return errors.New("Redis客户端未初始化")
+	}
+
+	// 使用Ping检查连接
+	if err := client.Ping(ctx).Err(); err != nil {
+		return err
+	}
+
+	return nil
+}