mkmrare/lib/utils.ts

105 lines
2.5 KiB
TypeScript

import { readFile, writeFile } from "fs";
import { Article, CardItem, LeanArticle, LeanMCMCard, MCMCard } from "./types";
export async function asyncLoadJSON<T>(filename: string): Promise<T> {
return new Promise((resolve, reject) => {
readFile(filename, "utf8", (err, data) => {
if (err) {
return reject(err);
}
resolve(JSON.parse(data));
});
});
}
export async function asyncSaveJSON(
filename: string,
data: any
): Promise<void> {
return new Promise((resolve, reject) => {
writeFile(filename, JSON.stringify(data), {}, err => {
if (err) {
return reject(err);
}
resolve();
});
});
}
export function leanCard(card: MCMCard): LeanMCMCard {
return {
colorIdentity: card.colorIdentity,
colors: card.colors,
convertedManaCost: card.convertedManaCost,
edhrecRank: card.edhrecRank,
manaCost: card.manaCost,
mcmId: card.mcmId,
name: card.name,
number: card.number,
rarity: card.rarity,
scryfallId: card.scryfallId,
subtypes: card.subtypes,
supertypes: card.supertypes,
text: card.text,
type: card.type,
types: card.types,
set: card.set,
scryfallImageUrl: card.scryfallImageUrl,
scryfallUrl: card.scryfallUrl
};
}
export function leanArticle(article: Article): LeanArticle {
return {
idArticle: article.idArticle,
language: article.language.languageName,
comments: article.comments,
price: article.price,
count: article.count,
condition: article.condition
};
}
export function onlyUnique(value: CardItem, index: number, self: CardItem[]) {
return self.findIndex(c => c.name == value.name) == index;
}
export function filterDict<K extends keyof any, T>(
arr: T[],
list: Record<K, (i: T) => boolean>
): Record<K, T[]> {
let out: Record<K, T[]> = Object.create(null);
for (const key in list) {
out[key] = arr.filter(list[key]);
}
return out;
}
export function spanBy<K extends keyof any, T>(
arr: T[],
spanFn: (i: T) => K
): Record<K, T[]> {
let out: Record<K, T[]> = Object.create(null);
arr.forEach(item => {
let key = spanFn(item);
if (key in out) {
out[key].push(item);
} else {
out[key] = [item];
}
});
return out;
}
export function dictMap<K extends keyof any, A, B>(
dict: Record<K, A>,
mapFn: (i: A, k: K) => B
): Record<K, B> {
let out: Record<K, B> = Object.create(null);
for (let key in dict) {
out[key] = mapFn(dict[key], key);
}
return out;
}