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client: optimize, simplify and smartify emoji picker search

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The query is split up on spaces, and we search for each of those terms,
in order, anywhere in the emoji name or any aliases/keywords.

This is done in a single filter pass against a compiled regex,
making the process reasonably performant.
Based on rough estimates, it should be between 2 and 5x faster
than the old implementation, depending on several factors.

There is a natural space left in to sort by relevancy (not done yet).
It should also be easy to make the number of matches shown configurable.
The number of matches is relevant, especially pre-sort.
Another consideration is to delay the calculation by up to 300ms.
This commit is contained in:
Chloe Kudryavtsev 2022-09-01 08:21:43 -04:00
parent 20f45e0179
commit 538e81db56
1 changed files with 19 additions and 132 deletions
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151
packages/client/src/components/emoji-picker.vue
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@ -126,145 +126,32 @@ const searchResultCustom = ref<Misskey.entities.CustomEmoji[]>([]);
const searchResultUnicode = ref<UnicodeEmojiDef[]>([]);
const tab = ref<'index' | 'custom' | 'unicode' | 'tags'>('index');
function emojiSearch<Type>(src: Type[], max: number, query: string): Type[] {
// discount fuzzy matching pattern
const re = new RegExp(query.split(' ').join('.*'), 'i');
const match = (str: string): boolean => str && re.test(str);
const matches = src.filter(emoji =>
match(emoji.name)
|| emoji.aliases?.some(match) // custom emoji
|| emoji.keywords?.some(match) // unicode emoji
);
// TODO: sort matches by distance to query
if (max <= 0 || matches.length < max) return matches;
return matches.slice(0, max);
}
watch(q, () => {
if (emojis.value) emojis.value.scrollTop = 0;
if (q.value == null || q.value === '') {
const query = q.value;
if (query == null || query === '') {
searchResultCustom.value = [];
searchResultUnicode.value = [];
return;
}
const newQ = q.value.replace(/:/g, '').toLowerCase();
const searchCustom = () => {
const max = 8;
const emojis = customEmojis;
const matches = new Set<Misskey.entities.CustomEmoji>();
const exactMatch = emojis.find(emoji => emoji.name === newQ);
if (exactMatch) matches.add(exactMatch);
if (newQ.includes(' ')) { // AND検索
const keywords = newQ.split(' ');
// 名前にキーワードが含まれている
for (const emoji of emojis) {
if (keywords.every(keyword => emoji.name.includes(keyword))) {
matches.add(emoji);
if (matches.size >= max) break;
}
}
if (matches.size >= max) return matches;
// 名前またはエイリアスにキーワードが含まれている
for (const emoji of emojis) {
if (keywords.every(keyword => emoji.name.includes(keyword) || emoji.aliases.some(alias => alias.includes(keyword)))) {
matches.add(emoji);
if (matches.size >= max) break;
}
}
} else {
for (const emoji of emojis) {
if (emoji.name.startsWith(newQ)) {
matches.add(emoji);
if (matches.size >= max) break;
}
}
if (matches.size >= max) return matches;
for (const emoji of emojis) {
if (emoji.aliases.some(alias => alias.startsWith(newQ))) {
matches.add(emoji);
if (matches.size >= max) break;
}
}
if (matches.size >= max) return matches;
for (const emoji of emojis) {
if (emoji.name.includes(newQ)) {
matches.add(emoji);
if (matches.size >= max) break;
}
}
if (matches.size >= max) return matches;
for (const emoji of emojis) {
if (emoji.aliases.some(alias => alias.includes(newQ))) {
matches.add(emoji);
if (matches.size >= max) break;
}
}
}
return matches;
};
const searchUnicode = () => {
const max = 8;
const emojis = emojilist;
const matches = new Set<UnicodeEmojiDef>();
const exactMatch = emojis.find(emoji => emoji.name === newQ);
if (exactMatch) matches.add(exactMatch);
if (newQ.includes(' ')) { // AND検索
const keywords = newQ.split(' ');
// 名前にキーワードが含まれている
for (const emoji of emojis) {
if (keywords.every(keyword => emoji.name.includes(keyword))) {
matches.add(emoji);
if (matches.size >= max) break;
}
}
if (matches.size >= max) return matches;
// 名前またはエイリアスにキーワードが含まれている
for (const emoji of emojis) {
if (keywords.every(keyword => emoji.name.includes(keyword) || emoji.keywords.some(alias => alias.includes(keyword)))) {
matches.add(emoji);
if (matches.size >= max) break;
}
}
} else {
for (const emoji of emojis) {
if (emoji.name.startsWith(newQ)) {
matches.add(emoji);
if (matches.size >= max) break;
}
}
if (matches.size >= max) return matches;
for (const emoji of emojis) {
if (emoji.keywords.some(keyword => keyword.startsWith(newQ))) {
matches.add(emoji);
if (matches.size >= max) break;
}
}
if (matches.size >= max) return matches;
for (const emoji of emojis) {
if (emoji.name.includes(newQ)) {
matches.add(emoji);
if (matches.size >= max) break;
}
}
if (matches.size >= max) return matches;
for (const emoji of emojis) {
if (emoji.keywords.some(keyword => keyword.includes(newQ))) {
matches.add(emoji);
if (matches.size >= max) break;
}
}
}
return matches;
};
searchResultCustom.value = Array.from(searchCustom());
searchResultUnicode.value = Array.from(searchUnicode());
searchResultCustom.value = emojiSearch(instance.emojis, 10, query);
searchResultUnicode.value = emojiSearch(emojilist, 10, query);
});
function focus() {