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package purchase
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import "time"
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// ContentType 内容类型
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type ContentType int8
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const (
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ContentTypeArticle ContentType = 1 // 文章
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ContentTypeColumn ContentType = 2 // 专栏
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)
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// ContentSource 内容来源
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type ContentSource int8
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const (
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ContentSourceBuy ContentSource = 1 // 购买
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ContentSourceGift ContentSource = 2 // 赠送
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)
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// Purchase 内容购买记录
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type Purchase struct {
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Id uint64 `xorm:"pk autoincr 'id'" json:"id"`
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UserId uint64 `xorm:"notnull 'user_id'" json:"userId"`
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ContentId uint64 `xorm:"notnull 'content_id'" json:"contentId"`
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ContentType ContentType `xorm:"tinyint(1) notnull 'content_type'" `
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Price float64 `xorm:"decimal(10,2) notnull 'price'" json:"price"`
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Duration int `xorm:"notnull 'duration'" json:"duration"` // 购买时长（月），文章为0表示永久
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OrderNo string
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ExpiredAt time.Time `xorm:"notnull 'expired_at'" json:"expiredAt"` // 过期时间，文章为null表示永久
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ContentSource ContentSource `xorm:"tinyint(1) notnull 'content_source'" `
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Status int8 `xorm:"tinyint(1) default 1 'status'" json:"status"`
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CreatedAt time.Time `xorm:"datetime created 'created_at'" json:"createdAt"`
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UpdatedAt time.Time `xorm:"datetime updated 'updated_at'" json:"updatedAt"`
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}
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// IsValid 检查购买记录是否有效
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func (p *Purchase) IsValid() bool {
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if p.Status != 1 {
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return false
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}
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if p.ContentType == ContentTypeArticle {
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return true // 文章永久有效
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}
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return time.Now().Before(p.ExpiredAt)
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}
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// NewPurchase 创建购买记录
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func NewPurchase(userId, contentId uint64, contentType ContentType, price float64, duration int) *Purchase {
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purchase := &Purchase{
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UserId: userId,
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ContentId: contentId,
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ContentType: contentType,
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Price: price,
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Duration: duration,
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Status: 1,
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}
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// 设置过期时间
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if contentType == ContentTypeColumn {
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purchase.ExpiredAt = time.Now().AddDate(0, duration, 0)
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}
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return purchase
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}
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