Fix response structure error and router error

Signed-off-by: Asai Neko <sugar@sne.moe>

utils/response.go

@@ -1,6 +1,11 @@
 package utils
 
-import "github.com/gin-gonic/gin"
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"github.com/goccy/go-json"
+)
 
 type RespStatus struct {
 	Code    int    `json:"code"`
@@ -9,22 +14,41 @@ type RespStatus struct {
 	Data    any    `json:"data"`
 }
 
-func HttpResponse(c *gin.Context, code int, errorId string, status string, data ...any) {
-	var resp = RespStatus{
+func render(c *gin.Context, code int, id string, status string, data []any, abort bool) {
+	resp := RespStatus{
 		Code:    code,
-		ErrorId: errorId,
+		ErrorId: id,
 		Status:  status,
-		Data:    data,
 	}
-	c.JSON(code, resp)
+
+	switch len(data) {
+	case 0:
+		resp.Data = nil
+	case 1:
+		resp.Data = data[0]
+	default:
+		resp.Data = data
+	}
+
+	jsonBytes, err := json.Marshal(resp)
+	if err != nil {
+		c.Status(http.StatusInternalServerError)
+		return
+	}
+
+	c.Header("Content-Type", "application/json; charset=utf-8")
+	if abort {
+		c.AbortWithStatus(code)
+	} else {
+		c.Status(code)
+	}
+	_, _ = c.Writer.Write(jsonBytes)
 }
 
-func HttpAbort(c *gin.Context, code int, errorId string, status string, data ...any) {
-	var resp = RespStatus{
-		Code:    code,
-		ErrorId: errorId,
-		Status:  status,
-		Data:    data,
-	}
-	c.AbortWithStatusJSON(code, resp)
+func HttpResponse(c *gin.Context, code int, id string, status string, data ...any) {
+	render(c, code, id, status, data, false)
+}
+
+func HttpAbort(c *gin.Context, code int, id string, status string, data ...any) {
+	render(c, code, id, status, data, true)
 }