65 lines
1.7 KiB
TypeScript
65 lines
1.7 KiB
TypeScript
export class AppMessagesIDsManager {
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public channelLocals = {} as any;
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public channelsByLocals = {} as any;
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public channelCurLocal = 0;
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public fullMsgIDModulus = 4294967296;
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public getFullMessageID(msgID: number, channelID: number): number {
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if(!channelID || msgID <= 0) {
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return msgID;
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}
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msgID = this.getMessageLocalID(msgID);
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var localStart = this.channelLocals[channelID];
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if(!localStart) {
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localStart = (++this.channelCurLocal) * this.fullMsgIDModulus;
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this.channelsByLocals[localStart] = channelID;
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this.channelLocals[channelID] = localStart;
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}
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return localStart + msgID;
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}
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public getMessageIDInfo(fullMsgID: number) {
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if (fullMsgID < this.fullMsgIDModulus) {
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return [fullMsgID, 0];
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}
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var msgID = fullMsgID % this.fullMsgIDModulus;
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var channelID = this.channelsByLocals[fullMsgID - msgID];
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return [msgID, channelID];
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}
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public getMessageLocalID(fullMsgID: number) {
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if (!fullMsgID) {
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return 0;
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}
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return fullMsgID % this.fullMsgIDModulus;
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}
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public splitMessageIDsByChannels (mids: any[]) {
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var msgIDsByChannels: any = {};
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var midsByChannels: any = {};
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var i;
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var mid, msgChannel;
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var channelID;
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for(i = 0; i < mids.length; i++) {
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mid = mids[i];
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msgChannel = this.getMessageIDInfo(mid);
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channelID = msgChannel[1];
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if(msgIDsByChannels[channelID] === undefined) {
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msgIDsByChannels[channelID] = [];
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midsByChannels[channelID] = [];
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}
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msgIDsByChannels[channelID].push(msgChannel[0]);
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midsByChannels[channelID].push(mid);
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}
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return {
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msgIDs: msgIDsByChannels,
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mids: midsByChannels
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};
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}
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}
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export default new AppMessagesIDsManager();
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