Quadnite-Bot/commands/expand.js

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function expand(words, text) {
const letters = text.trim().toLowerCase().split("");
// Build a dictionary with lowercase letters as keys
const dict = {};
words.forEach(word => {
if (word == "")
return;
const initial = word.split("")[0].toLowerCase();
if (initial in dict)
dict[initial].push(word);
else
dict[initial] = [word];
});
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return letters.map((letter) => {
if (!(letter.toLowerCase() in dict))
return letter;
const wordsWithLetter = dict[letter.toLowerCase()];
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const word = wordsWithLetter[Math.floor(Math.random() * wordsWithLetter.length)];
return word;
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}).reduce((acc, cur) => acc + " " + cur).replace(/\s{2,}/g, " ");
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}
module.exports = (words = []) => (ctx) => {
words = words.filter(i => ! i.match(/'s$/));
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const message = ctx.message.text.replace(/^[^ ]+/, "");
if (message) {
return expand(words, message);
} else {
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if (ctx.message.reply_to_message && !ctx.message.reply_to_message.is_topic_message)
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return expand(words, ctx.message.reply_to_message.text);
else
return "Need text to expand. Send /expand text or reply to a "
+ "message with /expand";
}
};