37 lines
1.3 KiB
Go
37 lines
1.3 KiB
Go
package listing
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// CoinWan 将内部哈夫币数量转为万。
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func CoinWan(hafCoinAmount int64) float64 {
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return float64(hafCoinAmount) / 10000
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}
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// BaseExchangeRatio 是主站挂牌的「1 元兑换哈夫币」比例。
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func BaseExchangeRatio(hafCoinAmount, priceCent int64) float64 {
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if hafCoinAmount <= 0 || priceCent <= 0 {
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return 0
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}
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return roundRatio(CoinWan(hafCoinAmount) / centToYuan(priceCent))
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}
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// ApplyShelfRatio 按分站加价比例重算售价。
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// 在「1 元兑换多少万哈夫币」的比例机制下：比例越小，售价越高（提价）；比例越大，售价越低（打折）。
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// 分站货架自主提价应调小兑换比例（siteRatio = baseRatio - ratioDelta），使分站售价高于主站基准价。
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func ApplyShelfRatio(hafCoinAmount, basePriceCent int64, ratioDelta float64) (priceCent int64, baseRatio, siteRatio float64) {
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baseRatio = BaseExchangeRatio(hafCoinAmount, basePriceCent)
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if ratioDelta < 0 {
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ratioDelta = 0
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}
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if baseRatio <= 0 || ratioDelta == 0 {
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return basePriceCent, baseRatio, baseRatio
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}
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siteRatio = roundRatio(baseRatio - ratioDelta)
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if siteRatio <= 0.01 {
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siteRatio = 0.01
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}
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priceCent = yuanToCent(CoinWan(hafCoinAmount) / siteRatio)
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if priceCent < basePriceCent {
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priceCent = basePriceCent
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}
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return priceCent, baseRatio, siteRatio
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}
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