Implement session module

Signed-off-by: Sean Du <do4suki@gmail.com>

internal/handler/event.go

@@ -1,18 +1,19 @@
 package handler
 
 import (
-	"encoding/json"
 	"honoka-chan/internal/model"
-	"honoka-chan/internal/utils"
-	"net/http"
+	"honoka-chan/internal/session"
 	"time"
 
 	"github.com/gin-gonic/gin"
 )
 
 func EventList(ctx *gin.Context) {
+	ss := session.New(ctx)
+	defer ss.Finalize()
+
 	targets := []model.TargetList{}
-	for i := 0; i < 6; i++ {
+	for i := range 6 {
 		targets = append(targets, model.TargetList{
 			Position:      i + 1,
 			IsDisplayable: false,
@@ -26,9 +27,6 @@ func EventList(ctx *gin.Context) {
 		ReleaseInfo: []any{},
 		StatusCode:  200,
 	}
-	resp, err := json.Marshal(eventsResp)
-	utils.CheckErr(err)
 
-	ctx.Header("X-Message-Sign", utils.GenXMS(resp))
-	ctx.String(http.StatusOK, string(resp))
+	ss.Respond(eventsResp)
 }