From 65212087e35695b7c5b1fb5e073a1f7d25835ce5 Mon Sep 17 00:00:00 2001
From: easrng <me@easrng.net>
Date: Wed, 16 Feb 2022 10:30:47 -0500
Subject: [PATCH] add unicode emoji autocomplete

---
 frontend/lib/chat.mjs         | 45 +++++++++++++++++++----------------
 frontend/lib/emojis.mjs       | 10 +++++---
 frontend/styles.css           |  4 ++++
 scripts/get_unicode_emojis.sh |  6 +++++
 4 files changed, 41 insertions(+), 24 deletions(-)
 create mode 100755 scripts/get_unicode_emojis.sh

diff --git a/frontend/lib/chat.mjs b/frontend/lib/chat.mjs
index 404c11c..a956b66 100644
--- a/frontend/lib/chat.mjs
+++ b/frontend/lib/chat.mjs
@@ -5,21 +5,19 @@ import {
 } from "./watch-session.mjs?v=1e57e6";
 import { emojify, emojis } from "./emojis.mjs?v=1e57e6";
 
-function insertAtCursor(input, textToInsert) {
-  const isSuccess = document.execCommand("insertText", false, textToInsert);
-
-  // Firefox (non-standard method)
-  if (!isSuccess && typeof input.setRangeText === "function") {
-    const start = input.selectionStart;
-    input.setRangeText(textToInsert);
-    // update cursor to be at the end of insertion
-    input.selectionStart = input.selectionEnd = start + textToInsert.length;
-
-    // Notify any possible listeners of the change
-    const e = document.createEvent("UIEvent");
-    e.initEvent("input", true, false);
-    input.dispatchEvent(e);
-  }
+function setCaretPosition(elem, caretPos) {
+        if(elem.createTextRange) {
+            var range = elem.createTextRange();
+            range.move('character', caretPos);
+            range.select();
+        } else {
+            if(elem.selectionStart) {
+                elem.focus();
+                elem.setSelectionRange(caretPos, caretPos);
+            }
+            else
+                elem.focus();
+        }
 }
 
 const setupChatboxEvents = (socket) => {
@@ -53,22 +51,27 @@ const setupChatboxEvents = (socket) => {
     };
     emojiAutocomplete.append(
       ...(await emojis)
-        .filter((e) => e.toLowerCase().startsWith(search.toLowerCase()))
-        .map((name, i) => {
+        .filter(([name]) => name.toLowerCase().startsWith(search.toLowerCase()))
+        .map(([name, replaceWith], i) => {
           const button = Object.assign(document.createElement("button"), {
             className: "emoji-option" + (i === 0 ? " selected" : ""),
             onmousedown: (e) => e.preventDefault(),
-            onclick: () =>
-              insertAtCursor(button, name.slice(match[2].length) + ": "),
+            onclick: () => {
+			  messageInput.value=prefix+replaceWith+" "+suffix;
+			  setCaretPosition(messageInput, (prefix+" "+replaceWith).length)
+			  },
             onmouseover: () => select(button),
             onfocus: () => select(button),
           });
           button.append(
-            Object.assign(new Image(), {
+            (replaceWith[0]!==":"?Object.assign(document.createElement("span"), {
+              textContent: replaceWith,
+              className: "emoji",
+            }):Object.assign(new Image(), {
               loading: "lazy",
               src: `/emojis/${name}.png`,
               className: "emoji",
-            }),
+            })),
             Object.assign(document.createElement("span"), { textContent: name })
           );
           return button;
diff --git a/frontend/lib/emojis.mjs b/frontend/lib/emojis.mjs
index 7729889..b5429ec 100644
--- a/frontend/lib/emojis.mjs
+++ b/frontend/lib/emojis.mjs
@@ -21,6 +21,10 @@ export async function emojify(text) {
   if (last < text.length) nodes.push(document.createTextNode(text.slice(last)));
   return nodes;
 }
-export const emojis = fetch("/emojis")
-  .then((e) => e.json())
-  .then((e) => e.map((e) => e.slice(0, -4)));
+export const emojis = Promise.all([
+  fetch("/emojis")
+    .then((e) => e.json())
+    .then((e) => e.map((e) => [e.slice(0, -4), ":"+e.slice(0, -4)+":"])),
+  fetch('/emojis/unicode.json')
+    .then((e) => e.json())
+]).then(e=>e.flat(1));
\ No newline at end of file
diff --git a/frontend/styles.css b/frontend/styles.css
index 635d908..afc2d81 100644
--- a/frontend/styles.css
+++ b/frontend/styles.css
@@ -287,6 +287,10 @@ button.small-button {
   width: 1.25rem;
   height: 1.25rem;
   margin: 0 0.5rem 0 0;
+  font-size: 2.25ch;
+  display: flex;
+  align-items: center;
+  justify-content: center;
 }
 
 .emoji-option.selected {
diff --git a/scripts/get_unicode_emojis.sh b/scripts/get_unicode_emojis.sh
new file mode 100755
index 0000000..e06a983
--- /dev/null
+++ b/scripts/get_unicode_emojis.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+# Get emoji folder
+emojiFolder="$(readlink -f "$(dirname $0)/../frontend/emojis/")"
+
+curl 'https://raw.githubusercontent.com/iamcal/emoji-data/master/emoji.json' | jq '. | map(. as $emoji | .short_names | map([., ($emoji.unified | split("-") | map(. | split("") | map(. as $nibble | (["0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F"] | index($nibble))) | reduce .[] as $item (0; (. * 16) + $item)) | map(if (. < 65536) then (.) else [55296 - 64 + (. / 1024 | floor), 56320 + (((. / 1024) - (. / 1024 | floor)) * 1024)] end) | flatten(1) | map(("\\u" + ("0000" + ({"str": "", "num": .} | until(.num < 1; {"str": (["0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F"][((.num / 16) - (.num / 16 | floor)) * 16] + .str), "num": (.num / 16) | floor})).str)[-4:])) | join("") | "\"" + . + "\"" | fromjson)])) | flatten(1)' --raw-output >"$emojiFolder/unicode.json"