48 lines
1.4 KiB
JavaScript
Executable File
48 lines
1.4 KiB
JavaScript
Executable File
module.exports = {
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get: isOnCooldown,
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set: placeOnCooldown
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};
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const memcache = require('memcache'),
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md5 = require('md5'),
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keyPrefix = 'cd';
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const cache = new memcache.Client();
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cache.on('error', console.error);
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cache.connect();
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// Given a cooldownTime in seconds and a command, returns false if the command is not on cooldown
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// returns the time in seconds until the command will be ready again otherwise
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function isOnCooldown(command, cooldownTime, callback)
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{
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return new Promise((resolve, reject) => {
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let now = Date.now();
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let onCooldown = false;
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let key = keyPrefix + md5(command);
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cache.get(key, function(err, timeUsed) {
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if (err) reject(err);
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if (timeUsed !== null) {
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// Command was recently used, check timestamp to see if it's on cooldown
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if ((now - timeUsed) <= (cooldownTime*1000)) {
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// Calculate how much longer it's on cooldown
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onCooldown = ((cooldownTime*1000) - (now - timeUsed))/1000;
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}
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}
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resolve(onCooldown);
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});
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});
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}
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// Places a command on cooldown for cooldownTime (in seconds)
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function placeOnCooldown(command, cooldownTime)
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{
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let key = keyPrefix + md5(command);
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return cache.set(key, Date.now(), handleCacheSet, cooldownTime);
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}
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function handleCacheSet(error, result) {}
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process.on('exit', (code) => {cache.close()}); |