112 lines
2.4 KiB
Go
112 lines
2.4 KiB
Go
package channel
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import (
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"context"
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"github.com/diamondburned/arikawa/gateway"
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"github.com/diamondburned/cchat"
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"github.com/diamondburned/cchat-discord/internal/discord/channel/memberlist"
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"github.com/diamondburned/ningen/states/member"
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)
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func seekPrevGroup(l *member.List, ix int) (item, group gateway.GuildMemberListOpItem) {
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l.ViewItems(func(items []gateway.GuildMemberListOpItem) {
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// Bound check.
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if ix >= len(items) {
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return
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}
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item = items[ix]
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// Search backwards.
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for i := ix; i >= 0; i-- {
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if items[i].Group != nil {
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group = items[i]
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return
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}
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}
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})
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return
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}
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var _ cchat.MemberLister = (*Channel)(nil)
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// IsMemberLister returns true if the channel is a guild channel.
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func (ch *Channel) IsMemberLister() bool {
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return ch.guildID.IsValid()
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}
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func (ch *Channel) memberListCh() memberlist.Channel {
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return memberlist.NewChannel(ch.state, ch.id, ch.guildID)
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}
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func (ch *Channel) ListMembers(ctx context.Context, c cchat.MemberListContainer) (func(), error) {
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if !ch.guildID.IsValid() {
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return func() {}, nil
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}
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cancel := ch.state.AddHandler(func(u *gateway.GuildMemberListUpdate) {
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l, err := ch.state.MemberState.GetMemberList(ch.guildID, ch.id)
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if err != nil {
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return // wat
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}
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if l.GuildID() != u.GuildID || l.ID() != u.ID {
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return
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}
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var listCh = ch.memberListCh()
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for _, ev := range u.Ops {
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switch ev.Op {
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case "SYNC":
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ch.checkSync(c)
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case "INSERT", "UPDATE":
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item, group := seekPrevGroup(l, ev.Index)
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if item.Member != nil && group.Group != nil {
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c.SetMember(group.Group.ID, listCh.NewMember(item))
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listCh.FlushMemberGroups(l, c)
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}
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case "DELETE":
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_, group := seekPrevGroup(l, ev.Index-1)
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if group.Group != nil && ev.Item.Member != nil {
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c.RemoveMember(group.Group.ID, ev.Item.Member.User.ID.String())
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listCh.FlushMemberGroups(l, c)
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}
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}
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}
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})
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ch.checkSync(c)
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return cancel, nil
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}
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func (ch *Channel) checkSync(c cchat.MemberListContainer) {
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l, err := ch.state.MemberState.GetMemberList(ch.guildID, ch.id)
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if err != nil {
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ch.state.MemberState.RequestMemberList(ch.guildID, ch.id, 0)
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return
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}
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listCh := ch.memberListCh()
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listCh.FlushMemberGroups(l, c)
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l.ViewItems(func(items []gateway.GuildMemberListOpItem) {
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var group gateway.GuildMemberListGroup
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for _, item := range items {
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switch {
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case item.Group != nil:
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group = *item.Group
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case item.Member != nil:
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c.SetMember(group.ID, listCh.NewMember(item))
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}
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}
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})
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}
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