a2a-source-edit: write frontend/src/App.jsx
This commit is contained in:
a2a-cloud
@@ -1,156 +1,241 @@
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import { useEffect, useMemo, useState } from "react";
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import { useEffect, useMemo, useState } from "react";
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import {
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import {
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callSkill,
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callSkill,
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fileToBrowserDocument,
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loadAgentConfig,
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loadAgentConfig,
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loadSession,
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loadSession,
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sampleArgs,
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needsInvokeSession,
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signInUrl,
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signInUrl,
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} from "./a2a.js";
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} from "./a2a.js";
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const SUCCESS_FIXTURE =
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"This Agreement renews automatically on 2026-12-31 unless either party gives at least 60 days written notice. Invoices are due 30 days after receipt.";
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function formatDeadline(deadline) {
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return `${deadline.kind}: ${deadline.date}`;
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}
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export function App() {
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export function App() {
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const [config, setConfig] = useState(null);
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const [config, setConfig] = useState(null);
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const [session, setSession] = useState(null);
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const [session, setSession] = useState(null);
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const [selectedSkillName, setSelectedSkillName] = useState("");
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const [contractId, setContractId] = useState("studio-contract-v1");
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const [argsText, setArgsText] = useState("{}");
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const [title, setTitle] = useState("Studio Renewal Agreement");
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const [text, setText] = useState(SUCCESS_FIXTURE);
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const [file, setFile] = useState(null);
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const [result, setResult] = useState(null);
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const [result, setResult] = useState(null);
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const [history, setHistory] = useState([]);
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const [status, setStatus] = useState("Loading ContractClock...");
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const [error, setError] = useState(null);
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const [error, setError] = useState(null);
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const [running, setRunning] = useState(false);
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const [running, setRunning] = useState(false);
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useEffect(() => {
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useEffect(() => {
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let cancelled = false;
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loadAgentConfig()
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loadAgentConfig()
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.then((data) => {
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.then(async (cfg) => {
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setConfig(data);
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if (cancelled) return;
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const firstSkill = data.skills?.[0];
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setConfig(cfg);
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if (firstSkill) {
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try {
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setSelectedSkillName(firstSkill.name);
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const sessionData = await loadSession(cfg);
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setArgsText(JSON.stringify(sampleArgs(firstSkill), null, 2));
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if (!cancelled) setSession(sessionData);
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} catch {
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if (!cancelled) setSession({ authenticated: false });
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}
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}
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return loadSession(data).catch(() => null);
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if (!cancelled) setStatus("Ready");
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})
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})
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.then((sessionData) => setSession(sessionData))
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.catch((err) => {
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.catch((err) => setError(err.message || String(err)));
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if (!cancelled) {
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setError(err.message || String(err));
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setStatus("Unable to load app metadata");
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}
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});
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return () => {
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cancelled = true;
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};
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}, []);
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}, []);
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const selectedSkill = useMemo(
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const signInHref = useMemo(() => (config ? signInUrl(config) : null), [config]);
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() => config?.skills?.find((skill) => skill.name === selectedSkillName),
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const needsSignIn = needsInvokeSession(config, session);
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[config, selectedSkillName],
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const skills = config?.skills || [];
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);
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const hasBase64Bridge = skills.some((skill) => skill.name === "analyze_contract_upload_base64");
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const hasFileUploadBridge = skills.some((skill) => skill.name === "analyze_contract_file");
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const needsSignIn = Boolean(
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function rememberTimeline(data) {
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config?.auth?.invokeRequiresSession && session && !session.authenticated,
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if (!data?.ok) return;
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);
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setHistory((current) => {
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const signInHref = useMemo(
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const next = current.filter((item) => item.contract_id !== data.contract_id);
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() => (config && needsSignIn ? signInUrl(config) : null),
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return [{ contract_id: data.contract_id, title: data.title, deadlines: data.deadlines || [] }, ...next].slice(0, 8);
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[config, needsSignIn],
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});
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);
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function selectSkill(skill) {
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setSelectedSkillName(skill.name);
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setArgsText(JSON.stringify(sampleArgs(skill), null, 2));
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setResult(null);
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setError(null);
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}
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}
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async function runSkill(event) {
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async function invoke(skill, args) {
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event.preventDefault();
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if (!config) return null;
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if (!config || !selectedSkill) return;
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setRunning(true);
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setRunning(true);
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setError(null);
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setError(null);
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setResult(null);
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setStatus(`Running ${skill}...`);
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try {
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try {
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const args = JSON.parse(argsText || "{}");
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const data = await callSkill(config, skill, args);
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const data = await callSkill(config, selectedSkill.name, args);
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setResult(data);
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setResult(data);
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if (data?.ok) {
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rememberTimeline(data);
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setStatus("Timeline saved");
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} else {
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setStatus(data?.code ? `Stopped: ${data.code}` : "Stopped");
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}
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return data;
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} catch (err) {
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} catch (err) {
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setError(err.message || String(err));
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if (err.status === 401 && signInHref) {
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setError("Your session expired. Sign in again to run ContractClock.");
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} else {
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setError(err.message || String(err));
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}
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setStatus("Request failed");
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return null;
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} finally {
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} finally {
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setRunning(false);
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setRunning(false);
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}
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}
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}
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}
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async function analyzePaste(event) {
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event.preventDefault();
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await invoke("analyze_contract", { contract_id: contractId, title, text });
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}
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async function analyzeUpload() {
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if (!file) {
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setError("Choose a plain-text contract file first.");
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return;
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}
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try {
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const document = await fileToBrowserDocument(file);
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await invoke("analyze_contract_upload_base64", { contract_id: contractId, title, document });
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} catch (err) {
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setError(err.message || String(err));
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setStatus("Upload rejected");
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}
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}
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async function reloadTimeline(id = contractId) {
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await invoke("get_contract_deadlines", { contract_id: id });
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}
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if (!config) {
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if (!config) {
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return (
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return (
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<main className="loading">
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<main className="loading" aria-live="polite">
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<p>{error || "Loading A2A agent contract..."}</p>
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<p>{error || status}</p>
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</main>
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</main>
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);
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);
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}
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}
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return (
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return (
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<main className="app-shell">
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<main className="app-shell">
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<aside className="sidebar">
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<section className="hero">
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<div>
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<p className="eyebrow">ContractClock Studio</p>
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<p className="eyebrow">A2A packed app</p>
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<h1>Renewal deadlines without date guessing.</h1>
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<h1>contract-clock-studio-v1</h1>
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<p className="lede">
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<p className="agent-meta">
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Paste or upload a plain-text contract. ContractClock extracts only explicit ISO renewal dates,
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{config.agent.name} v{config.agent.version}
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derives clause-bound notice windows, saves the timeline to managed Postgres, and lets you reopen it later.
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</p>
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</p>
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</div>
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<div className="session-card">
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<span>{session?.authenticated ? "Signed in" : "Signed out"}</span>
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<nav className="skill-list" aria-label="Agent skills">
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<strong>{session?.user?.email || session?.email || session?.org?.slug || "A2A Cloud session"}</strong>
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{(config.skills || []).map((skill) => (
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<button
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className={skill.name === selectedSkillName ? "skill active" : "skill"}
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key={skill.name}
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onClick={() => selectSkill(skill)}
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type="button"
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>
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<span>{skill.name}</span>
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<small>{skill.stream ? "streaming" : "request"}</small>
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</button>
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))}
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</nav>
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<div className="session">
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<span>{session?.authenticated ? "Signed in" : needsSignIn ? "Signed out" : "Local session"}</span>
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<strong>{session?.user?.email || session?.org?.slug || "dev@example.local"}</strong>
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{/* Skills that spend the caller's LLM budget need a signed-in
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visitor even when the page itself is public, so offer the way in
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rather than failing at the first click. */}
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{needsSignIn && signInHref ? (
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{needsSignIn && signInHref ? (
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<a className="signin" href={signInHref}>Sign in to run</a>
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<a className="signin" href={signInHref}>Sign in to analyze and save</a>
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) : null}
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) : null}
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</div>
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</div>
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</aside>
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<div className="capabilities" aria-label="Backend capabilities">
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<span>Managed Postgres</span>
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<span>Standard MCP: /mcp</span>
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<span>Receipts persisted</span>
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<span>{hasBase64Bridge ? "Browser upload bridge" : "Upload bridge missing"}</span>
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<span>{hasFileUploadBridge ? "Typed FileUpload bridge" : "FileUpload missing"}</span>
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</div>
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</section>
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<section className="workbench">
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<section className="studio" aria-label="Contract deadline workflow">
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<header className="toolbar">
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<form className="panel form" onSubmit={analyzePaste}>
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<div>
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<div className="row two">
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<p className="eyebrow">Skill runner</p>
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<h2>{selectedSkill?.name || "No skills found"}</h2>
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</div>
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<a href={config.docs.base} rel="noreferrer" target="_blank">
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Docs
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</a>
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</header>
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{selectedSkill ? (
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<form className="runner" onSubmit={runSkill}>
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<label>
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<label>
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Arguments JSON
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Contract ID
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<textarea
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<input value={contractId} onChange={(event) => setContractId(event.target.value)} required maxLength={120} />
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spellCheck="false"
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value={argsText}
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onChange={(event) => setArgsText(event.target.value)}
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/>
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</label>
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</label>
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<button disabled={running} type="submit">
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<label>
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{running ? "Running..." : `Run ${selectedSkill.name}`}
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Title
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<input value={title} onChange={(event) => setTitle(event.target.value)} required maxLength={200} />
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</label>
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</div>
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<label>
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Contract text
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<textarea value={text} onChange={(event) => setText(event.target.value)} maxLength={80000} required />
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</label>
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<div className="actions">
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<button disabled={running || needsSignIn} type="submit">
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{running ? "Working..." : "Analyze pasted contract"}
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</button>
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</button>
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</form>
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<button disabled={running || needsSignIn} onClick={() => reloadTimeline()} type="button">
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) : (
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Reopen saved timeline
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<p className="empty">Add a `@a2a.tool` to your agent to make it callable here.</p>
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</button>
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)}
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</div>
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</form>
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<section className="panels">
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<div className="panel upload">
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<div className="panel">
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<h2>Upload bridge</h2>
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<h3>Input schema</h3>
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<p>
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<pre>{JSON.stringify(selectedSkill?.input_schema || {}, null, 2)}</pre>
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Browser uploads are converted to bounded base64 JSON for the packed app. External A2A clients can still
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</div>
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use the typed <code>FileUpload</code> tool advertised on the Agent Card.
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<div className="panel">
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</p>
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<h3>Result</h3>
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<input
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<pre>{error || JSON.stringify(result, null, 2) || "No run yet."}</pre>
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aria-label="Plain text contract upload"
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type="file"
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accept="text/plain,.txt"
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onChange={(event) => setFile(event.target.files?.[0] || null)}
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/>
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<button disabled={running || needsSignIn || !file} onClick={analyzeUpload} type="button">
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Analyze uploaded text
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</button>
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</div>
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<section className="panel result" aria-live="polite">
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<div className="result-header">
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<div>
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<p className="eyebrow">Status</p>
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<h2>{status}</h2>
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</div>
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{result?.receipt_id ? <span className="receipt">Receipt {result.receipt_id}</span> : null}
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</div>
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</div>
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{error ? <p className="error">{error}</p> : null}
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{result?.ok ? (
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<div className="timeline">
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{(result.deadlines || []).map((deadline) => (
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<article className="deadline" key={`${deadline.kind}-${deadline.date}`}>
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<strong>{formatDeadline(deadline)}</strong>
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<p>{deadline.rationale}</p>
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<small>{deadline.source_text}</small>
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</article>
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))}
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</div>
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) : result ? (
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<p className="error">{result.code}: {result.message}</p>
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) : (
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<p className="empty">No run yet. Use the success fixture or upload a plain-text agreement.</p>
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)}
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</section>
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<section className="panel history">
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<h2>Reload-safe history</h2>
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{history.length ? (
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<ul>
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{history.map((item) => (
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<li key={item.contract_id}>
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<button disabled={running || needsSignIn} onClick={() => reloadTimeline(item.contract_id)} type="button">
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{item.contract_id}
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</button>
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<span>{(item.deadlines || []).map(formatDeadline).join(" • ")}</span>
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</li>
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))}
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</ul>
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) : (
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<p className="empty">Saved timelines appear here after a successful analysis.</p>
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)}
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</section>
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</section>
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</section>
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</section>
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</main>
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</main>
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Reference in New Issue
Block a user