shanshanzhong
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统一处理百分比和系数两种折扣输入方式，增加边界保护 在金额计算中使用math.Round进行四舍五入处理 添加相关单元测试确保计算准确性
26 lines
723 B
Go
26 lines
723 B
Go
package order
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import "github.com/perfect-panel/server/internal/types"
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// getDiscount 计算最终价格倍数
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// 参数：discounts 折扣规则列表（数量阈值 + 折扣倍数）；inputMonths 购买时长
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// 返回：最终价格倍数（如 0.95 表示按 95% 计价）
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func getDiscount(discounts []types.SubscribeDiscount, inputMonths int64) float64 {
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var finalDiscount float64 = 1.0
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for _, d := range discounts {
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val := d.Discount
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if val > 1 && val <= 100 {
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val = val / 100.0
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}
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if val < 0 {
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val = 0
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}
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if inputMonths >= d.Quantity && val < finalDiscount {
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finalDiscount = val
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}
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}
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return finalDiscount
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}
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