238 lines
7.0 KiB
Go
238 lines
7.0 KiB
Go
package coupon
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import (
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// "encoding/json"
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// "fmt"
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"log"
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"github.com/mitchellh/mapstructure"
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"loreal.com/dit/cmd/coupon-service/base"
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)
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var supportedRules []*Rule
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var issueJudges map[string]TemplateJudge
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var ruleBodyComposers map[string]BodyComposer
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var redeemJudges map[string]Judge
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// Init 初始化规则的一些基础数据
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// TODO: 这些可以通过配置文件进行，避免未来修改程序后才能部署
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func ruleInit(rules []*Rule) {
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supportedRules = rules
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issueJudges = make(map[string]TemplateJudge)
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issueJudges["APPLY_TIMES"] = new(ApplyTimesJudge)
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redeemJudges = make(map[string]Judge)
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redeemJudges["REDEEM_PERIOD_WITH_OFFSET"] = new(RedeemPeriodJudge)
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redeemJudges["REDEEM_TIMES"] = new(RedeemTimesJudge)
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redeemJudges["REDEEM_BY_SAME_BRAND"] = new(RedeemBySameBrandJudge)
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redeemJudges["REDEEM_IN_CURRENT_NATURE_MONTH_SEASON_YEAR"] = new(RedeemInCurrentNatureTimeUnitJudge)
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ruleBodyComposers = make(map[string]BodyComposer)
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ruleBodyComposers["REDEEM_PERIOD_WITH_OFFSET"] = new(RedeemPeriodWithOffsetBodyComposer)
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ruleBodyComposers["REDEEM_IN_CURRENT_NATURE_MONTH_SEASON_YEAR"] = new(RedeemInCurrentNatureTimeUnitBodyComposer)
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ruleBodyComposers["REDEEM_TIMES"] = new(RedeemTimesBodyComposer)
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ruleBodyComposers["REDEEM_BY_SAME_BRAND"] = new(RedeemBySameBrandBodyComposer)
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}
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// ValidateTemplateRules 发券时验证是否可以领用
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// 目前要求至少配置一个领用规则
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func validateTemplateRules(consumerID string, couponTypeID string, pct *PublishedCouponType) ([]error, error) {
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var errs []error = make([]error, 0)
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var judgeTimes int = 0
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for ruleInternalID, tempRuleBody := range pct.Rules {
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var rule = findRule(ruleInternalID)
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if nil == rule {
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return nil, &ErrRuleNotFound
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}
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if judge, ok := issueJudges[ruleInternalID]; ok {
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judgeTimes++
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var err = judge.JudgeTemplate(consumerID, couponTypeID, tempRuleBody, pct)
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if nil != err {
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errs = append(errs, err)
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}
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continue
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}
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}
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if 0 == judgeTimes {
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return nil, &ErrRuleJudgeNotFound
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}
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return errs, nil
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}
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// ValidateCouponRules 在redeem时需要验证卡券的规则
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// 目前要求至少配置一个兑换规则
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func validateCouponRules(requester *base.Requester, consumerID string, c *Coupon) ([]error, error) {
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var errs []error = make([]error, 0)
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var judgeTimes int = 0
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// var rulesString = c.Properties[KeyBindingRuleProperties]
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// ruleBodyRefs, err := unmarshalCouponRules(rulesString)
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// if nil != err {
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// return nil, err
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// }
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// log.Println(c.GetRules())
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// for ruleInternalID, ruleBody := range c.Properties[KeyBindingRuleProperties].(map[string]interface {}) {
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for ruleInternalID, ruleBody := range c.GetRules() {
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// TODO: 未来性能优化，考虑这个findRule去掉
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var rule = findRule(ruleInternalID)
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if nil == rule {
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return nil, &ErrRuleNotFound
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}
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if judge, ok := redeemJudges[ruleInternalID]; ok {
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judgeTimes++
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var err = judge.JudgeCoupon(requester, consumerID, ruleBody.(map[string]interface{}), c)
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if nil != err {
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errs = append(errs, err)
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}
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continue
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}
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}
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// for _, ruleRef := range ruleBodyRefs {
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// var ruleInternalID = ruleRef.RuleInternalID
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// var ruleBody = ruleRef.RuleBody
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// var rule = findRule(ruleInternalID)
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// if nil == rule {
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// return nil, &ErrRuleNotFound
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// }
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// if judge, ok := redeemJudges[rule.InternalID]; ok {
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// judgeTimes++
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// var err = judge.JudgeCoupon(requester, consumerID, ruleBody, c)
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// if nil != err {
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// errs = append(errs, err)
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// }
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// continue
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// }
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// }
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if 0 == judgeTimes {
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return nil, &ErrRuleJudgeNotFound
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}
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return errs, nil
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}
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// validateCouponExpired
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func validateCouponExpired(requester *base.Requester, consumerID string, c *Coupon) (bool, error) {
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for ruleInternalID, ruleBody := range c.GetRules() {
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var rule = findRule(ruleInternalID)
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if nil == rule {
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return false, &ErrRuleNotFound
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}
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if _, ok := redeemJudges[ruleInternalID]; ok {
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if ruleInternalID == "REDEEM_IN_CURRENT_NATURE_MONTH_SEASON_YEAR" {
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expired, err := JudgeNTUExpired(requester, consumerID, ruleBody.(map[string]interface{}), c)
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return expired, err
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}
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if ruleInternalID == "REDEEM_PERIOD_WITH_OFFSET" {
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expired, err := JudgePeriodExpired(requester, consumerID, ruleBody.(map[string]interface{}), c)
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return expired, err
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}
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}
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}
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return false, &ErrRuleNotFound
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}
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func findRule(ruleInternalID string) *Rule {
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for _, rule := range supportedRules {
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if rule.InternalID == ruleInternalID {
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return rule
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}
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}
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return nil
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}
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// marshalCouponRules 发券时生成最终的规则字符串，用来在核销时验证
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func marshalCouponRules(requester *base.Requester, couponTypeID string, rules map[string]map[string]interface{}) (map[string]interface{}, error) {
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var ruleBodyMap map[string]interface{} = make(map[string]interface{}, 0)
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for ruleInternalID, tempRuleBody := range rules {
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var rule = findRule(ruleInternalID)
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if nil == rule {
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return nil, &ErrRuleNotFound
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}
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if composer, ok := ruleBodyComposers[ruleInternalID]; ok {
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ruleBody, err := composer.Compose(requester, couponTypeID, tempRuleBody)
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if nil != err {
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log.Println(err)
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return nil, err
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}
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ruleBodyMap[ruleInternalID] = ruleBody
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}
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}
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return ruleBodyMap, nil
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// jsonBytes, err := json.Marshal(ruleBodyRefs)
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// if nil != err {
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// log.Println(err)
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// return "", err
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// }
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// return string(jsonBytes), nil
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}
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// unmarshalCouponRules 兑换时将卡券附带的规则解析成[]*RuleRef
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// func unmarshalCouponRules(rulesString string) ([]*RuleRef, error) {
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// var ruleBodyRefs []*RuleRef = make([]*RuleRef, 0)
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// err := json.Unmarshal([]byte(rulesString), &ruleBodyRefs)
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// if nil != err {
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// log.Println(err)
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// return nil, &ErrCouponRulesBadFormat
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// }
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// return ruleBodyRefs, nil
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// }
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// restRedeemTimes 查询剩下redeem的次数
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func restRedeemTimes(c *Coupon) (uint, error) {
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// for ruleInternalID, ruleBody := range c.Properties[KeyBindingRuleProperties].(map[string]interface {}) {
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for ruleInternalID, ruleBody := range c.GetRules() {
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if "REDEEM_TIMES" == ruleInternalID {
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// var count uint
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count, err := getCouponTransactionCountWithType(c.ID, TTRedeemCoupon)
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if nil != err {
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return 0, err
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}
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var rt redeemTimes
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if err = mapstructure.Decode(ruleBody, &rt); err != nil {
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return 0, &ErrCouponRulesBadFormat
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}
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// comparing first, to avoid negative result causes uint type out of bound
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if uint(rt.Times) >= count {
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return uint(rt.Times) - count, nil
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}
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return 0, nil
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}
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}
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// TODO: 未来考虑此处查找优化，提升效率
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// for _, ruleRef := range ruleBodyRefs {
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// if ruleRef.RuleInternalID == "REDEEM_TIMES" {
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// var ruleBody = ruleRef.RuleBody
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// var rt redeemTimes
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// err := json.Unmarshal([]byte(ruleBody), &rt)
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// if err != nil {
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// log.Println(err)
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// return 0, err
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// }
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// // 查询已经兑换次数
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// var count uint
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// count, err = getCouponTransactionCountWithType(c.ID, TTRedeemCoupon)
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// if nil != err {
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// return 0, err
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// }
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// return rt.Times - count, nil
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// }
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// }
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// 卡券没有设置兑换次数限制
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return 0, &ErrCouponRulesNoRedeemTimes
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}
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