app/javascript/flavours/glitch/features/emoji/emoji_mart_search_light.js
// This code is largely borrowed from:
// https://github.com/missive/emoji-mart/blob/5f2ffcc/src/utils/emoji-index.js
import * as data from './emoji_mart_data_light';
import { getData, getSanitizedData, uniq, intersect } from './emoji_utils';
let originalPool = {};
let index = {};
let emojisList = {};
let emoticonsList = {};
let customEmojisList = [];
for (let emoji in data.emojis) {
let emojiData = data.emojis[emoji];
let { short_names, emoticons } = emojiData;
let id = short_names[0];
if (emoticons) {
emoticons.forEach(emoticon => {
if (emoticonsList[emoticon]) {
return;
}
emoticonsList[emoticon] = id;
});
}
emojisList[id] = getSanitizedData(id);
originalPool[id] = emojiData;
}
function clearCustomEmojis(pool) {
customEmojisList.forEach((emoji) => {
let emojiId = emoji.id || emoji.short_names[0];
delete pool[emojiId];
delete emojisList[emojiId];
});
}
function addCustomToPool(custom, pool) {
if (customEmojisList.length) clearCustomEmojis(pool);
custom.forEach((emoji) => {
let emojiId = emoji.id || emoji.short_names[0];
if (emojiId && !pool[emojiId]) {
pool[emojiId] = getData(emoji);
emojisList[emojiId] = getSanitizedData(emoji);
}
});
customEmojisList = custom;
index = {};
}
function search(value, { emojisToShowFilter, maxResults, include, exclude, custom } = {}) {
if (custom !== undefined) {
if (customEmojisList !== custom)
addCustomToPool(custom, originalPool);
} else {
custom = [];
}
maxResults = maxResults || 75;
include = include || [];
exclude = exclude || [];
let results = null,
pool = originalPool;
if (value.length) {
if (value === '-' || value === '-1') {
return [emojisList['-1']];
}
let values = value.toLowerCase().split(/[\s|,\-_]+/),
allResults = [];
if (values.length > 2) {
values = [values[0], values[1]];
}
if (include.length || exclude.length) {
pool = {};
data.categories.forEach(category => {
let isIncluded = include && include.length ? include.indexOf(category.name.toLowerCase()) > -1 : true;
let isExcluded = exclude && exclude.length ? exclude.indexOf(category.name.toLowerCase()) > -1 : false;
if (!isIncluded || isExcluded) {
return;
}
category.emojis.forEach(emojiId => pool[emojiId] = data.emojis[emojiId]);
});
if (custom.length) {
let customIsIncluded = include && include.length ? include.indexOf('custom') > -1 : true;
let customIsExcluded = exclude && exclude.length ? exclude.indexOf('custom') > -1 : false;
if (customIsIncluded && !customIsExcluded) {
addCustomToPool(custom, pool);
}
}
}
const searchValue = (value) => {
let aPool = pool,
aIndex = index,
length = 0;
for (let charIndex = 0; charIndex < value.length; charIndex++) {
const char = value[charIndex];
length++;
aIndex[char] = aIndex[char] || {};
aIndex = aIndex[char];
if (!aIndex.results) {
let scores = {};
aIndex.results = [];
aIndex.pool = {};
for (let id in aPool) {
let emoji = aPool[id],
{ search } = emoji,
sub = value.slice(0, length),
subIndex = search.indexOf(sub);
if (subIndex !== -1) {
let score = subIndex + 1;
if (sub === id) score = 0;
aIndex.results.push(emojisList[id]);
aIndex.pool[id] = emoji;
scores[id] = score;
}
}
aIndex.results.sort((a, b) => {
let aScore = scores[a.id],
bScore = scores[b.id];
return aScore - bScore;
});
}
aPool = aIndex.pool;
}
return aIndex.results;
};
if (values.length > 1) {
results = searchValue(value);
} else {
results = [];
}
allResults = values.map(searchValue).filter(a => a);
if (allResults.length > 1) {
allResults = intersect.apply(null, allResults);
} else if (allResults.length) {
allResults = allResults[0];
}
results = uniq(results.concat(allResults));
}
if (results) {
if (emojisToShowFilter) {
results = results.filter((result) => emojisToShowFilter(data.emojis[result.id]));
}
if (results && results.length > maxResults) {
results = results.slice(0, maxResults);
}
}
return results;
}
export { search };