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feat: Add custom algoforge-dark Monaco editor theme (closes #24) #62

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feat: Add custom algoforge-dark Monaco editor theme (closes #24) #62

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4a247cc
feat: add custom algoforge-dark Monaco editor theme (closes #24)
Jun 30, 2026
56477f0
resolve conflicts + add aria-label and aria-pressed to theme toggle
Jun 30, 2026
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72 changes: 66 additions & 6 deletions app/src/sections/ProblemWorkspace.tsx
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
import { useState, useEffect, useRef } from 'react';
import { ArrowLeft, Play, CheckCircle2, ChevronDown, Moon, Sun, Monitor, Trash2 } from 'lucide-react';
import Editor from '@monaco-editor/react';
import Editor, { BeforeMount } from '@monaco-editor/react';
import type { editor } from 'monaco-editor';
import { getProblemById, executeCode } from '@/api/content';
import { updateProblemStatus } from '@/api/userActions';
import { toast } from 'sonner';
Expand All @@ -17,6 +18,59 @@ const SUPPORTED_LANGUAGES = [
{ id: 'java', name: 'Java' }
];

const ALGOFORGE_DARK_THEME: editor.IStandaloneThemeData = {
base: 'vs-dark',
inherit: true,
rules: [
{ token: '', foreground: 'e0e0e0', background: '141414' },
{ token: 'comment', foreground: '4a4a6a', fontStyle: 'italic' },
{ token: 'keyword', foreground: 'a088ff' },
{ token: 'keyword.control', foreground: 'a088ff' },
{ token: 'keyword.operator', foreground: 'a088ff' },
{ token: 'string', foreground: '63e3ff' },
{ token: 'string.escape', foreground: '63e3ff' },
{ token: 'number', foreground: 'ff8a63' },
{ token: 'number.float', foreground: 'ff8a63' },
{ token: 'type', foreground: '63e3ff' },
{ token: 'type.identifier', foreground: '63e3ff' },
{ token: 'identifier', foreground: 'e0e0e0' },
{ token: 'delimiter', foreground: '888888' },
{ token: 'delimiter.bracket', foreground: '888888' },
{ token: 'operator', foreground: 'a088ff' },
{ token: 'variable', foreground: 'e0e0e0' },
{ token: 'variable.predefined', foreground: '63e3ff' },
{ token: 'constant', foreground: 'ff8a63' },
{ token: 'annotation', foreground: 'a088ff' },
{ token: 'regexp', foreground: '63e3ff' },
{ token: 'tag', foreground: 'a088ff' },
{ token: 'attribute.name', foreground: '63e3ff' },
{ token: 'attribute.value', foreground: '63e3ff' },
{ token: 'metatag', foreground: 'a088ff' },
{ token: 'metatag.content', foreground: '63e3ff' },
],
colors: {
'editor.background': '#141414',
'editor.foreground': '#e0e0e0',
'editor.lineHighlightBackground': '#1e1e2e',
'editor.selectionBackground': '#a088ff33',
'editor.inactiveSelectionBackground': '#a088ff1a',
'editorCursor.foreground': '#a088ff',
'editorWhitespace.foreground': '#333333',
'editorIndentGuide.background': '#2a2a2a',
'editorIndentGuide.activeBackground': '#444444',
'editorLineNumber.foreground': '#444444',
'editorLineNumber.activeForeground': '#a088ff',
'editor.selectionHighlightBackground': '#a088ff1a',
'editorBracketMatch.background': '#a088ff33',
'editorBracketMatch.border': '#a088ff66',
'editorGutter.background': '#141414',
'scrollbar.shadow': '#000000',
'scrollbarSlider.background': '#33333380',
'scrollbarSlider.hoverBackground': '#55555580',
'scrollbarSlider.activeBackground': '#77777780',
},
};

/**
* ProblemWorkspace renders a full IDE-like workspace for a given coding problem.
* It fetches the problem by ID, manages per-language code state in localStorage,
Expand All @@ -31,7 +85,7 @@ export function ProblemWorkspace({ problemId, onBack }: ProblemWorkspaceProps) {
const [loading, setLoading] = useState(true);
const [code, setCode] = useState<string>('// Write your code here');
const [language, setLanguage] = useState<string>('javascript');
const [theme, setTheme] = useState<'vs-dark' | 'light'>('vs-dark');
const [theme, setTheme] = useState<'algoforge-dark' | 'light'>('algoforge-dark');
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const [executionResult, setExecutionResult] = useState<any>(null);
const [isExecuting, setIsExecuting] = useState(false);
Expand Down Expand Up @@ -89,6 +143,10 @@ export function ProblemWorkspace({ problemId, onBack }: ProblemWorkspaceProps) {
}
};

const handleBeforeMount: BeforeMount = (monaco) => {
monaco.editor.defineTheme('algoforge-dark', ALGOFORGE_DARK_THEME);
};

/**
* Sends the current editor code to the backend for execution and updates
* the console output with the results.
Expand Down Expand Up @@ -246,21 +304,23 @@ export function ProblemWorkspace({ problemId, onBack }: ProblemWorkspaceProps) {

<div className="flex items-center gap-4">
<button
onClick={() => setTheme(theme === 'vs-dark' ? 'light' : 'vs-dark')}
onClick={() => setTheme(theme === 'algoforge-dark' ? 'light' : 'algoforge-dark')}
className="text-white/60 hover:text-white"
title="Toggle Theme"
aria-label="Toggle theme"
aria-pressed={theme === 'algoforge-dark'}
>
{theme === 'vs-dark' ? <Sun className="w-4 h-4" /> : <Moon className="w-4 h-4" />}
{theme === 'algoforge-dark' ? <Sun className="w-4 h-4" /> : <Moon className="w-4 h-4" />}
</button>
Comment thread
coderabbitai[bot] marked this conversation as resolved.
</div>
</div>

{/* Editor Area */}
<div className="flex-1 min-h-0 bg-[#1e1e1e]">
<div className="flex-1 min-h-0 bg-[#141414]">
<Editor
height="100%"
language={language}
theme={theme}
beforeMount={handleBeforeMount}
value={code}
onChange={handleEditorChange}
options={{
Expand Down
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