Translate legalese into plain English and surface the hidden risks you need to watch out for.
import React, { useState } from "react";
import { createRoot } from "react-dom/client";
interface Annotation {
snippet: string;
explanation: string;
short: string;
category: "warning" | "info" | "tip";
}
interface Analysis {
summary: string;
annotations: Annotation[];
}
const CAT_COLORS: Record<Annotation["category"], string> = {
warning: "#ef4444",
info: "#3b82f6",
tip: "#10b981",
};
const CAT_LABELS: Record<Annotation["category"], string> = {
warning: "Watch Out",
info: "Plain English",
tip: "Good to Know",
};
interface TooltipState {
visible: boolean;
x: number;
y: number;
ann: Annotation | null;
}
function Tooltip({ state }: { state: TooltipState }) {
if (!state.visible || !state.ann) return null;
const color = CAT_COLORS[state.ann.category];
return (
<div className="tooltip" style={{ left: state.x, top: state.y, borderColor: color }}>
<div className="tooltip-head">
<span className="tooltip-dot" style={{ background: color }} />
<span className="tooltip-cat" style={{ color }}>{CAT_LABELS[state.ann.category]}</span>
</div>
<div className="tooltip-body">{state.ann.explanation}</div>
</div>
);
}
function App() {
const [analysis, setAnalysis] = useState<Analysis | null>(tb.insight<Analysis>());
const [loading, setLoading] = useState(false);
const [activeIndex, setActiveIndex] = useState<number | null>(null);
const [tooltip, setTooltip] = useState<TooltipState>({ visible: false, x: 0, y: 0, ann: null });
const runAnalysis = async () => {
setLoading(true);
try {
const result = await tb.infer<Analysis>();
if (result) setAnalysis(result);
} finally {
setLoading(false);
}
};
const rawText = tb.data(0) || "";
if (!analysis && !loading) {
return (
<div className="setup-screen">
<h1 className="title">Redlined</h1>
<p className="subtitle">Translate dense legalese into plain English</p>
<button onClick={runAnalysis} disabled={loading} className="primary-btn">
Analyze Document
</button>
</div>
);
}
// Build highlighted text
const renderText = () => {
if (!analysis || !rawText) return <p>{rawText}</p>;
const matches: { start: number; end: number; index: number }[] = [];
analysis.annotations.forEach((ann, index) => {
if (!ann.snippet) return;
const pos = rawText.indexOf(ann.snippet);
if (pos !== -1) matches.push({ start: pos, end: pos + ann.snippet.length, index });
});
matches.sort((a, b) => a.start - b.start);
const result: React.ReactNode[] = [];
let last = 0;
for (const m of matches) {
if (m.start < last) continue;
if (m.start > last) result.push(<span key={`t${last}`}>{rawText.substring(last, m.start)}</span>);
const cat = analysis.annotations[m.index].category;
const isActive = activeIndex === m.index;
result.push(
<mark
key={`h${m.index}`}
className={`hl hl-${cat}${isActive ? " hl-active" : ""}`}
onClick={(e) => {
const next = activeIndex === m.index ? null : m.index;
setActiveIndex(next);
if (next !== null && analysis) {
const rect = (e.target as HTMLElement).getBoundingClientRect();
const vw = window.innerWidth;
const tooltipW = Math.min(300, vw - 24);
let x = rect.left;
if (x + tooltipW > vw - 12) x = vw - tooltipW - 12;
x = Math.max(12, x);
setTooltip({ visible: true, x, y: rect.bottom + 8 + window.scrollY, ann: analysis.annotations[m.index] });
} else {
setTooltip(t => ({ ...t, visible: false }));
}
}}
>
{rawText.substring(m.start, m.end)}
<span className="hl-num">{m.index + 1}</span>
</mark>
);
last = m.end;
}
if (last < rawText.length) result.push(<span key={`t${last}`}>{rawText.substring(last)}</span>);
return <>{result}</>;
};
return (
<div className="container">
<Tooltip state={tooltip} />
<header className="main-header">
<div>
<h1>Redlined</h1>
<p className="tagline">Legalese in, plain English out</p>
</div>
<button onClick={runAnalysis} disabled={loading} className="secondary-btn">
{loading ? "Analyzing..." : "Analyze Another"}
</button>
</header>
{analysis && (
<>
<div className="summary-box">
<h3>Summary</h3>
<p>{analysis.summary}</p>
</div>
<div className="editor-layout">
<div className="doc-pane">
{renderText()}
</div>
<div className="comments-pane">
{analysis.annotations.map((ann, i) => {
const isActive = activeIndex === i;
return (
<div
key={i}
className={`bubble bubble-${ann.category}${isActive ? " bubble-active" : ""}`}
onClick={() => { if (window.getSelection()?.toString()) return; setActiveIndex(activeIndex === i ? null : i); }}
>
<div className="bubble-head">
<span className="bubble-num">{i + 1}</span>
<span className="bubble-cat" style={{ color: CAT_COLORS[ann.category] }}>{CAT_LABELS[ann.category]}</span>
<span className="bubble-short">{ann.short}</span>
</div>
{isActive && <>
<div className="bubble-quote">"{ann.snippet}"</div>
<div className="bubble-body">{ann.explanation}</div>
</>}
</div>
);
})}
</div>
</div>
<div className="legend">
{(Object.keys(CAT_COLORS) as Annotation["category"][]).map(cat => (
<span key={cat} className="legend-item">
<span className="legend-dot" style={{ background: CAT_COLORS[cat] }} />
{CAT_LABELS[cat]}
</span>
))}
</div>
<footer className="disclaimer">
This is an AI-generated analysis for informational purposes only. It is not legal advice. Consult a qualified attorney for decisions based on legal documents.
</footer>
</>
)}
</div>
);
}
const root = createRoot(document.getElementById("root")!);
root.render(<App />);