112 lines
3.8 KiB
Go
112 lines
3.8 KiB
Go
package rpc
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import (
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"context"
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"github.com/gotd/td/tg"
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"telesrv/internal/domain"
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)
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// channelPaidReactionService 是 r.deps.Channels 的可选扩展（app/channels.Service 实现），
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// 用类型断言接入，避免在 ChannelsService 接口上为付费 reaction 单加方法。
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type channelPaidReactionService interface {
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SendPaidReaction(ctx context.Context, userID int64, req domain.SendChannelPaidReactionRequest) (domain.ChannelMessagePaidReactionResult, error)
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}
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// channelPaidReactionUpdates 为某 viewer 构造一条 updateMessageReactions：把消息已有的普通
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// reaction 与付费 ReactionPaid（总星数 + top reactors）合并。非请求者走 min 语义（置 Min，
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// 客户端忽略 chosen 保留本地态），避免把请求者视角串给他人。
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func (r *Router) channelPaidReactionUpdates(ctx context.Context, requestUserID, viewerUserID int64, res domain.ChannelMessagePaidReactionResult, ids []int) *tg.Updates {
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isRequester := viewerUserID == requestUserID
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base := domain.ChannelMessageReactions{}
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if res.Message.Reactions != nil {
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base = *res.Message.Reactions
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}
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paid := clonePaidForViewer(res.Paid, isRequester)
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base.Paid = &paid
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mr := tgMessageReactions(viewerUserID, &base)
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if mr == nil {
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mr = &tg.MessageReactions{Results: []tg.ReactionCount{}}
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}
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if !isRequester {
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mr.Min = true
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}
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msgID := res.Message.ID
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if msgID == 0 && len(ids) > 0 {
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msgID = ids[0]
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}
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update := &tg.UpdateMessageReactions{
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Peer: &tg.PeerChannel{ChannelID: res.Channel.ID},
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MsgID: msgID,
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Reactions: *mr,
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}
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return &tg.Updates{
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Updates: []tg.UpdateClass{update},
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Users: r.tgUsersForIDs(ctx, viewerUserID, paidReactorUserIDs(res.Paid)),
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Chats: tgChannels(viewerUserID, []domain.Channel{res.Channel}),
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Date: int(r.clock.Now().Unix()),
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Seq: 0,
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}
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}
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// clonePaidForViewer 返回付费聚合的副本；非请求者抹除 My/MyStars（min 语义防串视角）。
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func clonePaidForViewer(paid domain.ChannelMessagePaidReactions, isRequester bool) domain.ChannelMessagePaidReactions {
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out := paid
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out.TopReactors = make([]domain.PaidReactor, len(paid.TopReactors))
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copy(out.TopReactors, paid.TopReactors)
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if !isRequester {
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out.MyStars = 0
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out.MyAnonymous = false
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for i := range out.TopReactors {
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out.TopReactors[i].My = false
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}
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}
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return out
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}
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// injectPaidReaction 把付费 reaction 注入 MessageReactions：ReactionPaid 计数置首位、填充
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// top reactors 排行。My/chosen 完全由 paid 的视角数据驱动（调用方对他人视角已抹除 My/MyStars）。
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func injectPaidReaction(mr *tg.MessageReactions, paid domain.ChannelMessagePaidReactions) {
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if paid.TotalStars <= 0 {
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return
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}
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paidCount := tg.ReactionCount{Reaction: &tg.ReactionPaid{}, Count: int(paid.TotalStars)}
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if paid.MyStars > 0 {
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// chosen_order 仅标记「本人已投」，具体序值不关键，置正。
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paidCount.SetChosenOrder(int(paid.MyStars))
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}
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mr.Results = append([]tg.ReactionCount{paidCount}, mr.Results...)
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reactors := make([]tg.MessageReactor, 0, len(paid.TopReactors))
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for _, rr := range paid.TopReactors {
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item := tg.MessageReactor{Count: int(rr.Stars)}
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if rr.My {
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item.My = true
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} else {
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item.Top = true
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}
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if rr.Anonymous {
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item.Anonymous = true
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}
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// PeerID：非匿名给出；匿名仅本人给出（TL 语义：匿名本人 anonymous+peer 都置）。
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if rr.UserID != 0 && (!rr.Anonymous || rr.My) {
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item.SetPeerID(&tg.PeerUser{UserID: rr.UserID})
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}
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reactors = append(reactors, item)
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}
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if len(reactors) > 0 {
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mr.SetTopReactors(reactors)
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}
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}
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// paidReactorUserIDs 收集非匿名 reactor 的用户 id，供 Updates.Users 富化头像。
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func paidReactorUserIDs(paid domain.ChannelMessagePaidReactions) []int64 {
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ids := make([]int64, 0, len(paid.TopReactors))
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for _, rr := range paid.TopReactors {
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if rr.UserID != 0 && !rr.Anonymous {
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ids = append(ids, rr.UserID)
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}
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}
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return ids
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}
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