59 lines
1.4 KiB
TypeScript
59 lines
1.4 KiB
TypeScript
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import type RedisInstance from "ioredis";
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async function applyCache(
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redis: RedisInstance,
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key: string,
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query: string,
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cacheTime: number
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) {
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if (await redis.get(key)) {
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return JSON.parse((await redis.get(key)) as string);
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} else {
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const response = await fetchEndpoint(redis, query);
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if (response != null) {
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await redis.set(key, JSON.stringify(response), "EX", cacheTime);
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}
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return response;
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}
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}
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async function fetchEndpoint(redis: RedisInstance, query: string) {
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if (await redis.get("BTTV.RATE_LIMIT")) {
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await new Promise((resolve) => setTimeout(resolve, 1000));
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} else {
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await redis.set("BTTV.RATE_LIMIT", "1", "EX", 1);
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}
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const requestHeaders = new Headers();
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requestHeaders.append("Content-Type", "application/json");
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requestHeaders.append("User-Agent", "toffee-web/indev");
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const response = await fetch(query, {
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headers: requestHeaders,
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});
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const json = await response.json();
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return json;
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}
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async function getGlobalEmotes(redis: RedisInstance) {
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return await applyCache(
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redis,
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"BTTV.GLOBAL_EMOTES",
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"https://api.betterttv.net/3/cached/emotes/global",
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3600
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);
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}
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async function getUserByID(redis: RedisInstance, channelID: string) {
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return await applyCache(
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redis,
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`BTTV.CHANNEL_EMOTES.${channelID}`,
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`https://api.betterttv.net/3/cached/users/twitch/${channelID}`,
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3600
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);
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}
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export { getGlobalEmotes, getUserByID };
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