add docker hot update management

internal/handler/system_update.go

@@ -0,0 +1,49 @@
+package handler
+
+import (
+	"errors"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+
+	"github.com/ShukeBta/MediaStationGo/internal/service"
+)
+
+func systemUpdateStatusHandler(svc *service.Container) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		if svc.SystemUpdate == nil {
+			c.JSON(http.StatusServiceUnavailable, gin.H{"error": "system update service unavailable"})
+			return
+		}
+		c.JSON(http.StatusOK, svc.SystemUpdate.Status(c.Request.Context()))
+	}
+}
+
+func systemUpdateCheckHandler(svc *service.Container) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		if svc.SystemUpdate == nil {
+			c.JSON(http.StatusServiceUnavailable, gin.H{"error": "system update service unavailable"})
+			return
+		}
+		c.JSON(http.StatusOK, svc.SystemUpdate.Check(c.Request.Context()))
+	}
+}
+
+func systemUpdateApplyHandler(svc *service.Container) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		if svc.SystemUpdate == nil {
+			c.JSON(http.StatusServiceUnavailable, gin.H{"error": "system update service unavailable"})
+			return
+		}
+		status, err := svc.SystemUpdate.Apply(c.Request.Context())
+		if err != nil {
+			if errors.Is(err, service.ErrSystemUpdateRunning) {
+				c.JSON(http.StatusConflict, gin.H{"error": err.Error(), "status": status})
+				return
+			}
+			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error(), "status": status})
+			return
+		}
+		c.JSON(http.StatusAccepted, status)
+	}
+}