add create handler

handlers/cage_handler.go

@@ -1,6 +1,7 @@
 package handlers
 
 import (
+	"encoding/json"
 	"github.com/gin-gonic/gin"
 	"hamster-tycoon/storage/dao"
 	"hamster-tycoon/storage/model"
@@ -54,7 +55,44 @@ func (hc *handlersContext) getACage(c *gin.Context) {
 }
 
 func (hc *handlersContext) createACage(c *gin.Context) {
+	b, err := c.GetRawData()
+	if err != nil {
+		utils.GetLoggerFromCtx(c).WithError(err).Error("error while creating cage, read data fail")
+		utils.JSONError(c.Writer, model.ErrInternalServer)
+		return
+	}
 
+	cageToCreate := model.Cage{}
+	err = json.Unmarshal(b, &cageToCreate)
+	if err != nil {
+		utils.JSONError(c.Writer, model.ErrBadRequestFormat)
+		return
+	}
+
+	err = hc.validator.StructCtx(c, cageToCreate)
+	if err != nil {
+		utils.JSONError(c.Writer, validators.NewDataValidationAPIError(err))
+		return
+	}
+
+	err = hc.db.CreateCage(&cage)
+	if e, ok := err.(*dao.DAOError); ok {
+		switch {
+		case e.Type == dao.ErrTypeDuplicate:
+			utils.JSONErrorWithMessage(c.Writer, model.ErrAlreadyExists, "Cage already exists")
+			return
+		default:
+			utils.GetLoggerFromCtx(c).WithError(err).WithField("type", e.Type).Error("error CreateCage: Error type not handled")
+			utils.JSONError(c.Writer, model.ErrInternalServer)
+			return
+		}
+	} else if err != nil {
+		utils.GetLoggerFromCtx(c).WithError(err).Error("error while creating cage")
+		utils.JSONError(c.Writer, model.ErrInternalServer)
+		return
+	}
+
+	utils.JSON(c.Writer, http.StatusCreated, cageToCreate)
 }
 
 func (hc *handlersContext) updateACage(c *gin.Context) {