Replaced chi v5 with gin

holiday/model.go

@@ -16,16 +16,16 @@ type Holiday struct {
 }
 
 type Paging struct {
-	PageSize int
-	Page     int
+	PageSize int `form:"page_size" binging:"min=0"`
+	Page     int `form:"page" binging:"min=0"`
 }
 
 type Search struct {
-	Country          string
-	Year             *int
-	Date             *time.Time
-	RangeStart       *time.Time
-	RangeEnd         *time.Time
-	StateHoliday     *bool
-	ReligiousHoliday *bool
+	Country          string     `form:"country" binding:"len=2"`
+	Year             *int       `form:"year" binding:"omitempty,min=0"`
+	Date             *time.Time `form:"date" time_format:"2006-01-02"`
+	RangeStart       *time.Time `form:"range_start" time_format:"2006-01-02"`
+	RangeEnd         *time.Time `form:"range_end" time_format:"2006-01-02"`
+	StateHoliday     *bool      `form:"state_holiday,omitempty"`
+	ReligiousHoliday *bool      `form:"religious_holiday,omitempty"`
 }