From 9c34a96242cd084a654e052d5bd348306a676cd4 Mon Sep 17 00:00:00 2001
From: Shivam Mishra <scm.mymail@gmail.com>
Date: Thu, 2 May 2024 14:12:46 +0530
Subject: [PATCH] feat: use local implementation

---
 app/javascript/shared/helpers/keybindings.js  | 97 +++++++++++++++++++
 .../mixins/keyboardEventListenerMixins.js     |  2 +-
 2 files changed, 98 insertions(+), 1 deletion(-)
 create mode 100644 app/javascript/shared/helpers/keybindings.js

diff --git a/app/javascript/shared/helpers/keybindings.js b/app/javascript/shared/helpers/keybindings.js
new file mode 100644
index 000000000..38e7520a3
--- /dev/null
+++ b/app/javascript/shared/helpers/keybindings.js
@@ -0,0 +1,97 @@
+let KEYBINDING_MODIFIER_KEYS = ['Shift', 'Meta', 'Alt', 'Control'];
+let PLATFORM = typeof navigator === 'object' ? navigator.platform : '';
+let APPLE_DEVICE = /Mac|iPod|iPhone|iPad/.test(PLATFORM);
+let MOD = APPLE_DEVICE ? 'Meta' : 'Control';
+let ALT_GRAPH_ALIASES =
+  // eslint-disable-next-line no-nested-ternary
+  PLATFORM === 'Win32' ? ['Control', 'Alt'] : APPLE_DEVICE ? ['Alt'] : [];
+
+function getModifierState(event, mod) {
+  return typeof event.getModifierState === 'function'
+    ? event.getModifierState(mod) ||
+        (ALT_GRAPH_ALIASES.includes(mod) && event.getModifierState('AltGraph'))
+    : false;
+}
+
+export function parseKeybinding(str) {
+  return str
+    .trim()
+    .split(' ')
+    .map(press => {
+      let mods = press.split(/\b\+/);
+      let key = mods.pop();
+      mods = mods.map(mod => (mod === '$mod' ? MOD : mod));
+      return [mods, key];
+    });
+}
+
+function match(event, press) {
+  const [mods, key] = press;
+
+  // Check if the pressed key matches the expected key
+  if (key.toUpperCase() !== event.key.toUpperCase() && key !== event.code) {
+    return false;
+  }
+
+  // Check if all required modifiers are pressed
+  if (mods.some(mod => !getModifierState(event, mod))) {
+    return false;
+  }
+
+  // Check if any unexpected modifiers are pressed
+  if (
+    KEYBINDING_MODIFIER_KEYS.some(
+      mod => !mods.includes(mod) && key !== mod && getModifierState(event, mod)
+    )
+  ) {
+    return false;
+  }
+
+  return true;
+}
+
+export function createKeybindingsHandler(keyBindingMap) {
+  let keyBindings = Object.keys(keyBindingMap).map(key => {
+    return [parseKeybinding(key), keyBindingMap[key]];
+  });
+
+  let possibleMatches = new Map();
+  let timer = null;
+
+  return event => {
+    if (!(event instanceof KeyboardEvent)) {
+      return;
+    }
+
+    // eslint-disable-next-line no-console
+    console.log(event.key, event.code, event.getModifierState('Control'));
+
+    keyBindings.forEach(keyBinding => {
+      let sequence = keyBinding[0];
+      let callback = keyBinding[1];
+
+      let prev = possibleMatches.get(sequence);
+      let remainingExpectedPresses = prev ?? sequence;
+      let currentExpectedPress = remainingExpectedPresses[0];
+
+      let matches = match(event, currentExpectedPress);
+
+      if (!matches) {
+        if (!getModifierState(event, event.key)) {
+          possibleMatches.delete(sequence);
+        }
+      } else if (remainingExpectedPresses.length > 1) {
+        possibleMatches.set(sequence, remainingExpectedPresses.slice(1));
+      } else {
+        possibleMatches.delete(sequence);
+        callback(event);
+      }
+    });
+
+    if (timer) {
+      clearTimeout(timer);
+    }
+
+    timer = setTimeout(possibleMatches.clear.bind(possibleMatches), 1000);
+  };
+}
diff --git a/app/javascript/shared/mixins/keyboardEventListenerMixins.js b/app/javascript/shared/mixins/keyboardEventListenerMixins.js
index c8ae42799..1d7bd934d 100644
--- a/app/javascript/shared/mixins/keyboardEventListenerMixins.js
+++ b/app/javascript/shared/mixins/keyboardEventListenerMixins.js
@@ -1,6 +1,6 @@
 import { isActiveElementTypeable, isEscape } from '../helpers/KeyboardHelpers';
 
-import { createKeybindingsHandler } from 'tinykeys';
+import { createKeybindingsHandler } from 'shared/helpers/keybindings';
 import * as Sentry from '@sentry/browser';
 
 // this is a store that stores the handler globally, and only gets reset on reload