更新

internal/model/calendar.go

@@ -0,0 +1,17 @@
+package model
+
+import "time"
+
+type TradeCalendar struct {
+	CalDate      time.Time `gorm:"column:cal_date;primaryKey"`
+	Exchange     string    `gorm:"column:exchange;primaryKey"`
+	IsOpen       int       `gorm:"column:is_open"`
+	PretradeDate time.Time `gorm:"column:pretrade_date"`
+}
+
+func (TradeCalendar) TableName() string { return "trade_calendar" }
+
+type CalendarResponse struct {
+	OpenDates []string `json:"open_dates"`
+	MaxDate   string   `json:"max_date"`
+}