ae9a71034d
Add HTTP /v1 MVC, TCP send path, groups with server-side member-avatar collage, object-storage upload, and friends/favorites around the architecture-v3 layout. Co-authored-by: Cursor <cursoragent@cursor.com>
61 lines
1008 B
Go
61 lines
1008 B
Go
package entity
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import "time"
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const (
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RelationNone = 0
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RelationFriend = 1
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RelationBlock = 2
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)
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const (
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ListDefault = 20
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ListMax = 100
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)
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// Relation is a bidirectional friendship. Natural key (user_small, user_big).
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type Relation struct {
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UserSmall int64
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UserBig int64
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CreatedAt time.Time
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}
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func NewRelation(a, b int64, at time.Time) *Relation {
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small, big := OrderUsers(a, b)
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return &Relation{UserSmall: small, UserBig: big, CreatedAt: at}
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}
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func (r *Relation) Other(me int64) int64 {
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if r == nil {
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return 0
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}
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if r.UserSmall == me {
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return r.UserBig
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}
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if r.UserBig == me {
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return r.UserSmall
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}
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return 0
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}
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func ClampLimit(limit int) int {
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if limit <= 0 {
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return ListDefault
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}
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if limit > ListMax {
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return ListMax
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}
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return limit
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}
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// ViewStatus is the viewer-centric relation: friend, blocked-by-me, or none.
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func ViewStatus(friend, blockedByMe bool) int {
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if blockedByMe {
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return RelationBlock
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}
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if friend {
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return RelationFriend
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}
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return RelationNone
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}
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