122 lines
3.7 KiB
Go
122 lines
3.7 KiB
Go
package service
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import (
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"electricity_bill_calc/cache"
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"electricity_bill_calc/global"
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"electricity_bill_calc/logger"
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"electricity_bill_calc/model"
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"electricity_bill_calc/repository"
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"fmt"
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"github.com/shopspring/decimal"
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"go.uber.org/zap"
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)
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type _ChargeService struct {
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log *zap.Logger
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}
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var ChargeService = &_ChargeService{
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log: logger.Named("Service", "Charge"),
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}
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// 创建一条新的用户充值记录，同时更新用户的服务期限
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func (cs _ChargeService) RecordUserCharge(uid string, fee, discount, amount *decimal.Decimal, chargeTo model.Date, extendExpriationIgnoringSettle bool) (bool, error) {
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cs.log.Info(
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"创建一条新的用户充值记录。",
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zap.String("uid", uid),
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logger.DecimalField("fee", fee),
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logger.DecimalField("discount", discount),
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logger.DecimalField("amount", amount),
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logger.DateField("chargeTo", &chargeTo),
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zap.Bool("extendExpriationIgnoringSettle", extendExpriationIgnoringSettle),
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)
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ctx, cancel := global.TimeoutContext()
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defer cancel()
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tx, err := global.DB.Begin(ctx)
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if err != nil {
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cs.log.Error("开启数据库事务失败。", zap.Error(err))
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return false, err
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}
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ok, err := repository.ChargeRepository.CreateChargeRecord(tx, ctx, uid, fee, discount, amount, chargeTo)
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switch {
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case err == nil && !ok:
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cs.log.Error("未能成功创建用户充值记录", zap.Error(err))
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tx.Rollback(ctx)
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return false, fmt.Errorf("未能成功创建用户充值记录")
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case err != nil:
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cs.log.Error("创建用户充值记录失败。", zap.Error(err))
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tx.Rollback(ctx)
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return false, err
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}
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if extendExpriationIgnoringSettle {
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ok, err = repository.UserRepository.UpdateServiceExpiration(tx, ctx, uid, chargeTo.Time)
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switch {
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case err != nil:
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cs.log.Error("更新用户服务期限失败。", zap.Error(err))
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tx.Rollback(ctx)
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return false, err
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case !ok:
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cs.log.Error("未能成功更新用户服务期限", zap.Error(err))
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tx.Rollback(ctx)
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return false, fmt.Errorf("未能成功更新用户服务期限")
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}
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}
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err = tx.Commit(ctx)
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if err != nil {
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cs.log.Error("提交数据库事务失败。", zap.Error(err))
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return false, err
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}
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cache.AbolishRelation("charge")
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cache.AbolishRelation(fmt.Sprintf("user:%s", uid))
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return true, nil
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}
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// 撤销用户的某一条充值记录，同时重新设置用户的服务期限
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func (cs _ChargeService) CancelUserCharge(uid string, seq int64) (bool, error) {
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cs.log.Info("撤销用户的充值记录。", zap.String("uid", uid), zap.Int64("seq", seq))
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ctx, cancel := global.TimeoutContext()
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defer cancel()
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tx, err := global.DB.Begin(ctx)
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if err != nil {
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cs.log.Error("开启数据库事务失败。", zap.Error(err))
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return false, err
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}
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ok, err := repository.ChargeRepository.CancelCharge(tx, ctx, uid, seq)
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switch {
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case err == nil && !ok:
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cs.log.Error("未能成功撤销用户充值记录", zap.Error(err))
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tx.Rollback(ctx)
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return false, fmt.Errorf("未能成功撤销用户充值记录")
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case err != nil:
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cs.log.Error("撤销用户充值记录失败。", zap.Error(err))
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tx.Rollback(ctx)
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return false, err
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}
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if ok {
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lastValidCharge, err := repository.ChargeRepository.LatestValidChargeTo(tx, ctx, uid)
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if err != nil {
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cs.log.Error("查询用户最近一次有效的充值记录失败。", zap.Error(err))
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tx.Rollback(ctx)
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return false, err
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}
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ok, err = repository.UserRepository.UpdateServiceExpiration(tx, ctx, uid, lastValidCharge.Time)
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if err != nil || !ok {
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cs.log.Error("更新用户服务期限失败。", zap.Error(err))
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tx.Rollback(ctx)
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return false, err
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}
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}
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err = tx.Commit(ctx)
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if err != nil {
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cs.log.Error("提交数据库事务失败。", zap.Error(err))
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return false, err
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}
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cache.AbolishRelation("charge")
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cache.AbolishRelation(fmt.Sprintf("user:%s", uid))
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return true, nil
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}
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