feat(charge):增加计费记录查询功能，待测。

repository/charge.go

@@ -0,0 +1,52 @@
+package repository
+
+import (
+	"electricity_bill_calc/config"
+	"electricity_bill_calc/global"
+	"electricity_bill_calc/model"
+	"time"
+
+	"xorm.io/builder"
+)
+
+type _ChargeRepository struct{}
+
+var ChargeRepo _ChargeRepository
+
+func (_ChargeRepository) ListPagedChargeRecord(keyword, beginDate, endDate string, page int) ([]model.ChargeWithName, int64, error) {
+	var cond = builder.NewCond()
+	if len(keyword) != 0 {
+		cond.And(builder.Like{"u.name", keyword})
+	}
+	if len(beginDate) != 0 {
+		beginTime, err := time.Parse("2006-01-02", beginDate)
+		if err != nil {
+			return make([]model.ChargeWithName, 0), 0, err
+		}
+		cond.And(builder.Gte{"c.created_at": beginTime})
+	}
+	if len(endDate) != 0 {
+		endTime, err := time.Parse("2006-01-02", endDate)
+		if err != nil {
+			return make([]model.ChargeWithName, 0), 0, err
+		}
+		cond.And(builder.Lte{"c.created_at": endTime})
+	}
+	startItem := (page - 1) * config.ServiceSettings.ItemsPageSize
+	total, err := global.DBConn.
+		Table("user_charge").Alias("c").
+		Join("INNER", []string{"user_detail", "d"}, "c.user_id=d.id").
+		Where(cond).
+		Count(&model.ChargeWithName{})
+	if err != nil {
+		return nil, -1, err
+	}
+	charges := make([]model.ChargeWithName, 0)
+	err = global.DBConn.
+		Table("user_charge").Alias("c").
+		Join("INNER", []string{"user_detail", "d"}, "c.user_id=d.id").
+		Where(cond).
+		Limit(config.ServiceSettings.ItemsPageSize, startItem).
+		Find(&charges)
+	return charges, total, err
+}