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function(e,t,n){"use strict";n.d(t,{A:()=>A});var i=n(158390),r=n(439372),a=n(734057),s=n(568548),l=n(309010),o=n(935208),d=n(828488),c=n(623562),u=n(619065),_=n(575279);class E extends r.A{visibleTopMessageId=null;backoffStateByChannel=new Map;actions={CHANNEL_SELECT:()=>{this.visibleTopMessageId=null},UPDATE_VISIBLE_MESSAGES:e=>{let{topVisibleMessage:t}=e,n=l.Ay.getChannelId();if(null==n)return;let i=a.A.getChannel(n)?.guild_id;if(null==i||!(0,d.Lc)(i,"visible_messages"))return;let r=this.visibleTopMessageId!==t;this.visibleTopMessageId=t??null,this.isBackoffPending(n)||(r||null==t&&this.hasMoreConversations(n,"after"))&&this.fetchForViewport(n,i,r)},CONVERSATIONS_FETCH_SUCCESS:e=>{let{channelId:t}=e;this.clearBackoff(t)},CONVERSATIONS_FETCH_FAILURE:e=>{let{channelId:t}=e;this.armBackoff(t)},CHANNEL_DELETE:e=>{let{channel:t}=e;this.clearBackoff(t.id)},LOGOUT:()=>this.reset()};fetchForViewport(e,t,n){let i=u.A.getChannelConversations(e),r=this.hasMoreConversations(e,"before"),a=this.hasMoreConversations(e,"after");if(null==i||0===i.length&&a)return void(0,c.WF)({channelId:e,guildId:t,direction:null==this.visibleTopMessageId?"before":"around",anchor:this.visibleTopMessageId,limit:25,isJump:!0});let l=this.visibleTopMessageId??s.Ay.lastMessageId(e);if(null==l||null==i||0===i.length)return;let o=null==this.visibleTopMessageId;if(this.isAnchorOutsideBuffer(i,l)&&(!o||n))return void(0,c.WF)({channelId:e,guildId:t,direction:"around",anchor:l,limit:25,isJump:!0});if(o){a&&(0,c.WF)({channelId:e,guildId:t,direction:"after",anchor:i[i.length-1].id,limit:25});return}let{above:d,below:_}=this.countBuffer(e,l);d<10&&_<10&&r&&a?(0,c.WF)({channelId:e,guildId:t,direction:"around",anchor:l,limit:25}):d<10&&r?(0,c.WF)({channelId:e,guildId:t,direction:"before",anchor:i[0].id,limit:25}):_<10&&a&&(0,c.WF)({channelId:e,guildId:t,direction:"after",anchor:i[i.length-1].id,limit:25})}hasMoreConversations(e,t){let n=u.A.getEdgeMarker(e,t);return"before"===t?null==n:null==n||Date.now()-n>_.sE}isBackoffPending(e){return this.backoffStateByChannel.get(e)?.backoff.pending??!1}getOrCreateBackoffState(e){let t=this.backoffStateByChannel.get(e);return null==t&&(t={backoff:new i.A(2e3,18e4),retry:()=>this.retryAfterBackoff(e)},this.backoffStateByChannel.set(e,t)),t}armBackoff(e){let{backoff:t,retry:n}=this.getOrCreateBackoffState(e);t.fail(n)}clearBackoff(e){this.backoffStateByChannel.get(e)?.backoff.cancel(),this.backoffStateByChannel.delete(e)}retryAfterBackoff(e){if(l.Ay.getChannelId()!==e)return;let t=a.A.getChannel(e)?.guild_id;null!=t&&(0,d.Lc)(t,"backoff_retry")&&this.fetchForViewport(e,t,!0)}reset(){for(let{backoff:e}of(this.visibleTopMessageId=null,this.backoffStateByChannel.values()))e.cancel();this.backoffStateByChannel.clear()}isAnchorOutsideBuffer(e,t){let n=e[0],i=e[e.length-1];return 0>o.default.compare(t,n.startMessageId)||o.default.compare(t,i.endMessageId)>0}countBuffer(e,t){let n=u.A.getChannelConversations(e);if(null==n)return{above:0,below:0};let i=0,r=0;for(let e of n){let n=o.default.compare(e.startMessageId,t);n<0?i++:n>0&&r++}return{above:i,below:r}}}let A=new E}