Started rewrite

files/assets/js/emoji_modal2.js

@@ -0,0 +1,116 @@
+// This code isn't for feeble minds, you might not understand it Dr. Transmisia.
+// The dainty hands of a trans goddess wrote this code. Watch the way her fingers
+// dance across the keyboard and learn.
+
+/**
+ * @typedef {object} EmojiDef
+ * @property {number} author_id
+ * @property {string} author_original_username
+ * @property {string} author_username
+ * @property {number} count
+ * @property {number} created_utc
+ * @property {string} kind
+ * @property {string} name
+ * @property {number | null} submitter_id
+ * @property {string[]} tags
+ */
+
+/** Returns a promise which can be used to await when the event loop is idle. */
+const idle = () => {
+    return new Promise(resolve => {
+        requestIdleCallback(resolve);
+    });
+}
+
+class TagDict {
+    /** 
+     * @type {Map<string,Set<string>>}
+     * @private
+     */
+    _map = new Map();
+
+    /**
+     * @param {string} tag
+     */
+    get = (tag) => {
+        const set = this._map.get(tag);
+
+        if (!set) {
+            const newSet = new Set();
+            this._map.set(tag, newSet);
+            return newSet;
+        } else {
+            return set;
+        }
+    }
+
+    /**
+     * @param {string} tag
+     * @param {string} emojiName
+     */
+    add = (tag, emojiName) => {
+        this.get(tag).add(emojiName);
+    }
+
+    /**
+     * @param {string} tag
+     * @param {string} emojiName
+     */
+    delete = (tag, emojiName) => {
+        this.get(tag).delete(emojiName);
+    }
+
+    /**
+     * If emojiName is not provided, returns whether the tag exists.
+     * Otherwise, returns whether the tag contains the emoji.
+     * @param {string} tag
+     * @param {string} [emojiName]
+     */
+    has = (tag, emojiName) => {
+        if (emojiName) {
+            return this.get(tag).has(emojiName);
+        } else {
+            return this._map.has(tag);
+        }
+    }
+
+    [Symbol.iterator] = () => this._map[Symbol.iterator]();
+}
+
+class EmojiEngine {
+    tags = new TagDict();
+
+    /**
+     * @param {EmojiDef[]} emojis
+     */
+    init = async (emojis) => {
+        for (const emoji of emojis) {
+            this.tags.add(emoji.name, emoji.name);
+
+            for (const tag of emoji.tags) {
+                this.tags.add(tag, emoji.name);
+            }
+
+            // I left out tagging by author... lets see if anyone complains...
+        }
+    }
+
+    search = async(query) => {
+        if (query?.length < 2) {
+            return new Set();
+        }
+
+        const results = new Set();
+        for (const [tag, names] of this.tags) {
+            if (tag.includes(query) || query.includes(tag)) {
+                for (const name of names) {
+                    results.add(name);
+                }
+            }
+        }
+        return results;
+    }
+}
+
+const emojiEngine = new EmojiEngine();
+emojiEngine.init();