lemmy/ui/src/utils.ts

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2019-03-30 06:08:02 +00:00
import { UserOperation, Comment } from './interfaces';
import * as markdown_it from 'markdown-it';
export let repoUrl = 'https://github.com/dessalines/lemmy';
export function msgOp(msg: any): UserOperation {
let opStr: string = msg.op;
return UserOperation[opStr];
}
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var md = new markdown_it({
html: true,
linkify: true,
typographer: true
});
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export function hotRank(comment: Comment): number {
// Rank = ScaleFactor * sign(Score) * log(1 + abs(Score)) / (Time + 2)^Gravity
let date: Date = new Date(comment.published + 'Z'); // Add Z to convert from UTC date
let now: Date = new Date();
let hoursElapsed: number = (now.getTime() - date.getTime()) / 36e5;
let rank = (10000 * Math.sign(comment.score) * Math.log10(1 + Math.abs(comment.score))) / Math.pow(hoursElapsed + 2, 1.8);
// console.log(`Comment: ${comment.content}\nRank: ${rank}\nScore: ${comment.score}\nHours: ${hoursElapsed}`);
return rank;
}
export function mdToHtml(text: string) {
return {__html: md.render(text)};
}
export function getUnixTime(text: string): number {
return text ? new Date(text).getTime()/1000 : undefined;
}
export function addTypeInfo<T>(arr: Array<T>, name: string): Array<{type_: string, data: T}> {
return arr.map(e => {return {type_: name, data: e}});
}