965 lines
35 KiB
TypeScript
965 lines
35 KiB
TypeScript
import { useCallback, useEffect, useMemo, useReducer, useRef, useState } from 'preact/hooks';
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import type { ComponentChildren } from 'preact';
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import qrcodeGenerator from 'qrcode-generator';
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import type { WidgetBootstrap } from './bootstrap';
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import { WidgetApi, type RoomEvent } from './widget-api';
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import { createT, type T } from './i18n';
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import { parseEvent } from './bridge-protocol/parser';
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import {
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hydrateFromTimeline,
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initialLoginState,
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loginReducer,
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type HydrateInput,
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type LoginErrorFlag,
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} from './state';
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// Visual canon mirrors the Telegram widget — Dawn palette, fleet-violet
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// accent, monospace handles. The Discord widget keeps Vojo's accent (per
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// product decision: «used Vojo style») rather than adopting Discord
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// blurple, so the panel reads as a coherent continuation of the host UI.
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type TranscriptKind = 'from-bot' | 'from-user' | 'diag' | 'error';
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type TranscriptLine = {
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id: string;
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ts: number;
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kind: TranscriptKind;
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text: string;
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};
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type Props = {
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bootstrap: WidgetBootstrap;
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// The WidgetApi is constructed in main.tsx synchronously, BEFORE React's
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// first render — see widget-telegram for the cached-bundle race rationale.
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api: WidgetApi;
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};
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const TRANSCRIPT_MAX = 200;
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// Inline SVG refresh icon — same as TG widget for visual consistency.
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const RefreshIcon = () => (
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<svg viewBox="0 0 20 20" fill="none" stroke="currentColor" stroke-width="1.6" aria-hidden="true">
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<path d="M3.5 8.5a6.5 6.5 0 0 1 11.4-3.2" stroke-linecap="round" />
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<path d="M16.5 11.5a6.5 6.5 0 0 1-11.4 3.2" stroke-linecap="round" />
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<path d="M14.6 3.2v3.5h-3.5" stroke-linecap="round" stroke-linejoin="round" />
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<path d="M5.4 16.8v-3.5h3.5" stroke-linecap="round" stroke-linejoin="round" />
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</svg>
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);
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// Linkifier — same heuristic as TG widget.
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const URL_RE = /https?:\/\/[^\s)]+/g;
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// Defense-in-depth: a Discord remoteauth login URL is the LIVE login
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// secret. Today the bridge only emits it via `m.image` (which we route
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// to a generic «QR-код выдан» diag, never a verbatim transcript line).
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// But if a future bridge revision started echoing the URL into m.notice
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// — say, for a chat-fallback fallback path — the existing transcript
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// append would (a) store the URL in the DOM, (b) survive page reload via
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// the hydrate replay, and (c) the linkifier would turn it into a
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// clickable anchor that opens in the parent browser, leaving the active
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// login token in the user's history. Scrubbing here makes the leak
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// path closed even if the upstream wiring drifts.
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const REMOTEAUTH_URL_RE =
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/https:\/\/(?:[a-z0-9-]+\.)?(?:discordapp|discord)\.com\/(?:ra|login\/handoff)\/[A-Za-z0-9_\-+=.~?&/]+/gi;
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const scrubLoginSecret = (body: string): string =>
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body.replace(REMOTEAUTH_URL_RE, '[redacted login URL]');
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const formatTime = (ts: number): string => {
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const d = new Date(ts);
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const hh = String(d.getHours()).padStart(2, '0');
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const mm = String(d.getMinutes()).padStart(2, '0');
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const ss = String(d.getSeconds()).padStart(2, '0');
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return `${hh}:${mm}:${ss}`;
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};
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const renderBody = (body: string): ComponentChildren => {
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const out: ComponentChildren[] = [];
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let lastIndex = 0;
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for (const match of body.matchAll(URL_RE)) {
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const idx = match.index ?? 0;
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if (idx > lastIndex) out.push(body.slice(lastIndex, idx));
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out.push(
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<a key={`${idx}-${match[0]}`} href={match[0]} target="_blank" rel="noreferrer noopener">
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{match[0]}
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</a>
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);
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lastIndex = idx + match[0].length;
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}
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if (lastIndex < body.length) out.push(body.slice(lastIndex));
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return out.length === 0 ? body : out;
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};
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const localizeError = (err: LoginErrorFlag, t: T): string => {
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switch (err.kind) {
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case 'login_failed':
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return t('auth-error.login-failed', { reason: err.reason ?? '' });
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case 'captcha_required':
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return t('auth-error.captcha-required');
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case 'login_websocket_failed':
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return t('auth-error.websocket-failed', { reason: err.reason ?? '' });
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case 'connect_after_login_failed':
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return t('auth-error.connect-after-login-failed', { reason: err.reason ?? '' });
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case 'prepare_login_failed':
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return t('auth-error.prepare-failed', { reason: err.reason ?? '' });
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case 'already_logged_in':
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return t('auth-error.already-logged-in');
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case 'unknown_command':
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return t('auth-error.unknown-command');
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default: {
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const exhaustive: never = err;
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return String(exhaustive);
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}
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}
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};
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// Captcha is the only «not really an error, more of a suggestion» case —
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// surface as warn (amber) rather than red. Everything else is a hard
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// failure of the login attempt and gets red treatment.
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const errorTone = (err: LoginErrorFlag): 'error' | 'warn' => {
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if (err.kind === 'captcha_required') return 'warn';
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if (err.kind === 'already_logged_in') return 'warn';
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return 'error';
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};
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// --------------------------------------------------------------------------
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// QR panel
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// --------------------------------------------------------------------------
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// Discord remoteauth's server-side timeout sits around 2 minutes of
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// inactivity (the bridge holds the websocket; Discord's gateway closes
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// it from its side). 3 minutes is a slight safety margin: the user
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// sees «expired» a touch after the server probably already dropped
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// the WS, but never before, so they can't trust a dead QR. This MUST
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// match HYDRATE_FRESHNESS_MS in state.ts so the timeline-resume window
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// agrees with the panel countdown — diverging the two would mean a
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// reload at e.g. 4 min restores the panel even though the panel
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// itself would render «expired». Telegram's MTProto QR rotates and
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// lives ~10 min, which is why the TG widget uses 10 min for both.
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const QR_TIMEOUT_MS = 3 * 60 * 1000;
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// Error-correction level M is a good trade-off for short URLs — more
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// resilient to camera glare than L, smaller modules than Q. typeNumber=0
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// auto-picks the smallest QR version that fits the payload.
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const buildQrModules = (data: string): boolean[][] | null => {
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if (!data) return null;
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try {
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const qr = qrcodeGenerator(0, 'M');
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qr.addData(data);
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qr.make();
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const count = qr.getModuleCount();
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const matrix: boolean[][] = [];
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for (let r = 0; r < count; r += 1) {
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const row: boolean[] = [];
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for (let c = 0; c < count; c += 1) {
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row.push(qr.isDark(r, c));
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}
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matrix.push(row);
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}
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return matrix;
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} catch {
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return null;
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}
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};
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// Render the QR matrix as <rect> elements inside an SVG. We deliberately
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// avoid `dangerouslySetInnerHTML` and any external QR-rendering service:
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// the `https://discord.com/ra/...` URL IS the login secret, so it must
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// never leave the iframe and must never reach a stringified-HTML path
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// that bypasses Preact's escaping.
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type QrSvgProps = { matrix: boolean[][]; pixelSize: number; ariaLabel: string };
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const QrSvg = ({ matrix, pixelSize, ariaLabel }: QrSvgProps) => {
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const count = matrix.length;
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const margin = 4;
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const totalUnits = count + margin * 2;
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const cellPx = pixelSize / totalUnits;
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const rects: ComponentChildren[] = [];
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for (let r = 0; r < count; r += 1) {
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for (let c = 0; c < count; c += 1) {
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if (!matrix[r][c]) continue;
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rects.push(
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<rect
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key={`${r}-${c}`}
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x={(c + margin) * cellPx}
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y={(r + margin) * cellPx}
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width={cellPx + 0.5 /* +0.5 px overlap kills subpixel gaps on Android */}
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height={cellPx + 0.5}
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fill="#000"
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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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<svg
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width={pixelSize}
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height={pixelSize}
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viewBox={`0 0 ${pixelSize} ${pixelSize}`}
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role="img"
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aria-label={ariaLabel}
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>
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{rects}
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</svg>
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);
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};
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type QrPanelProps = {
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state: {
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kind: 'awaiting_qr_scan';
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discordUrl: string;
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firstShownAt: number;
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lastError?: LoginErrorFlag;
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};
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t: T;
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onCancel: () => void;
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};
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const QrPanel = ({ state, t, onCancel }: QrPanelProps) => {
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const [now, setNow] = useState(() => Date.now());
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useEffect(() => {
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const timer = window.setInterval(() => setNow(Date.now()), 1000);
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return () => window.clearInterval(timer);
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}, []);
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const matrix = useMemo(() => buildQrModules(state.discordUrl), [state.discordUrl]);
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const elapsed = state.firstShownAt > 0 ? now - state.firstShownAt : 0;
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const remainingSeconds = Math.max(0, Math.ceil((QR_TIMEOUT_MS - elapsed) / 1000));
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const expired = elapsed >= QR_TIMEOUT_MS && state.firstShownAt > 0;
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return (
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<div class="auth-card auth-card-qr">
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<div class="auth-card-title">{t('auth-card.qr.title')}</div>
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<div class="auth-card-hint">{t('auth-card.qr.hint')}</div>
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<div class="auth-card-qr-frame">
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{matrix ? (
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// The aria-label describes the PURPOSE, not the contents — the
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// URL itself is the login secret and must not be exposed via
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// AT-tree text content.
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<QrSvg matrix={matrix} pixelSize={232} ariaLabel={t('auth-card.qr.aria')} />
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) : (
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<div class="auth-card-qr-placeholder" role="status" aria-live="polite">
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<span class="dot" />
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{t('auth-card.qr.preparing')}
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</div>
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)}
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</div>
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{!expired ? (
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<div class="auth-card-countdown">
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{t('auth-card.qr.countdown', {
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minutes: String(Math.floor(remainingSeconds / 60)),
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seconds: String(remainingSeconds % 60).padStart(2, '0'),
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})}
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</div>
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) : (
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<div class="auth-card-countdown expired">{t('auth-card.qr.expired')}</div>
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)}
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<ol class="auth-card-qr-steps">
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<li>{t('auth-card.qr.step-1')}</li>
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<li>{t('auth-card.qr.step-2')}</li>
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<li>{t('auth-card.qr.step-3')}</li>
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</ol>
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{state.lastError ? (
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<div class={errorTone(state.lastError) === 'warn' ? 'auth-card-warn' : 'auth-card-error'}>
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{localizeError(state.lastError, t)}
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</div>
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) : null}
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<div class="auth-card-row">
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<button type="button" class="btn-text" onClick={onCancel}>
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{t('auth-card.cancel')}
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</button>
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</div>
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</div>
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);
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};
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// --------------------------------------------------------------------------
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// About card + modal
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// --------------------------------------------------------------------------
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type AboutCardProps = {
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t: T;
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onOpen: () => void;
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};
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const AboutCard = ({ t, onOpen }: AboutCardProps) => (
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<button class="command-card" type="button" onClick={onOpen}>
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<div class="command-card-body">
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<div class="command-card-name">{t('card.about.name')}</div>
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<div class="command-card-desc">{t('card.about.desc')}</div>
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</div>
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<span class="command-card-chevron" aria-hidden="true">
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›
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</span>
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</button>
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);
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type AboutModalProps = {
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t: T;
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onClose: () => void;
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};
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const AboutModal = ({ t, onClose }: AboutModalProps) => {
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useEffect(() => {
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const onKey = (e: KeyboardEvent) => {
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if (e.key === 'Escape') onClose();
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};
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window.addEventListener('keydown', onKey);
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return () => window.removeEventListener('keydown', onKey);
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}, [onClose]);
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return (
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<div
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class="about-overlay"
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role="dialog"
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aria-modal="true"
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aria-label={t('about.title')}
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onClick={(e) => {
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if (e.target === e.currentTarget) onClose();
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}}
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>
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<div class="about-panel">
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<header class="about-header">
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<h2 class="about-title">{t('about.title')}</h2>
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<button
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type="button"
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class="about-close-x"
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onClick={onClose}
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aria-label={t('about.aria-close')}
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>
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×
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</button>
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</header>
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<div class="about-body">
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<p>{t('about.body-1')}</p>
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<p>{t('about.body-2')}</p>
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<p>{t('about.body-3')}</p>
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<p>
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{t('about.github-label')}{' '}
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<a href={t('about.github-url')} target="_blank" rel="noreferrer">
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{t('about.github-url')}
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</a>
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</p>
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<p>{t('about.body-4')}</p>
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</div>
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<div class="about-footer">
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<button type="button" class="btn-primary" onClick={onClose}>
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{t('about.close')}
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</button>
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</div>
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</div>
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</div>
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);
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};
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// --------------------------------------------------------------------------
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// Logout card with confirm-in-place
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// --------------------------------------------------------------------------
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type LogoutCardProps = {
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t: T;
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onConfirm: () => Promise<void>;
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};
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const LogoutCard = ({ t, onConfirm }: LogoutCardProps) => {
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const [confirming, setConfirming] = useState(false);
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const [submitting, setSubmitting] = useState(false);
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// Belt-and-suspenders against double-submit. `disabled={submitting}` covers
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// 99% of cases, but there's a microtask window between click and Preact
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// rendering the disabled state where a fast second click could fire.
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const inFlight = useRef(false);
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if (confirming) {
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return (
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<div class="command-card danger">
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<div class="command-card-confirm">
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<span class="command-card-confirm-prompt">{t('card.logout.confirm-prompt')}</span>
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<button
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type="button"
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class="command-card-confirm-yes"
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disabled={submitting}
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onClick={async () => {
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if (inFlight.current) return;
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inFlight.current = true;
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setSubmitting(true);
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try {
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await onConfirm();
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} finally {
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inFlight.current = false;
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setSubmitting(false);
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setConfirming(false);
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}
|
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}}
|
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>
|
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{t('card.logout.confirm-yes')}
|
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</button>
|
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<button
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type="button"
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class="command-card-confirm-no"
|
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disabled={submitting}
|
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onClick={() => setConfirming(false)}
|
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>
|
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{t('card.logout.confirm-no')}
|
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</button>
|
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</div>
|
||
</div>
|
||
);
|
||
}
|
||
|
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return (
|
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<button class="command-card danger" type="button" onClick={() => setConfirming(true)}>
|
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<div class="command-card-body">
|
||
<div class="command-card-name">{t('card.logout.name')}</div>
|
||
<div class="command-card-desc">{t('card.logout.desc')}</div>
|
||
</div>
|
||
<span class="command-card-chevron" aria-hidden="true">
|
||
›
|
||
</span>
|
||
</button>
|
||
);
|
||
};
|
||
|
||
// --------------------------------------------------------------------------
|
||
// Main App
|
||
// --------------------------------------------------------------------------
|
||
|
||
export function App({ bootstrap, api }: Props) {
|
||
const [theme, setTheme] = useState<'light' | 'dark'>(bootstrap.theme);
|
||
const [transcript, setTranscript] = useState<TranscriptLine[]>([]);
|
||
const [handshakeOk, setHandshakeOk] = useState(false);
|
||
const [aboutOpen, setAboutOpen] = useState(false);
|
||
// True while a `ping` probe is in flight from a refresh-card click.
|
||
const [refreshing, setRefreshing] = useState(false);
|
||
const seenEventIds = useRef(new Set<string>());
|
||
const [state, dispatch] = useReducer(loginReducer, initialLoginState);
|
||
|
||
// stateRef mirrors latest reducer state so async live-event listeners
|
||
// (attached once at mount) read current state without their stale
|
||
// closure capturing the initial `unknown` snapshot. Used by transcript
|
||
// diag gate for `qr_redacted`.
|
||
const stateRef = useRef(state);
|
||
useEffect(() => {
|
||
stateRef.current = state;
|
||
}, [state]);
|
||
|
||
const t = useMemo(() => createT(bootstrap.clientLanguage), [bootstrap.clientLanguage]);
|
||
|
||
useEffect(() => {
|
||
document.documentElement.dataset.theme = theme;
|
||
}, [theme]);
|
||
|
||
const append = useCallback((line: Omit<TranscriptLine, 'id' | 'ts'>) => {
|
||
setTranscript((prev) => {
|
||
const next = [...prev, { ...line, id: `${Date.now()}-${Math.random()}`, ts: Date.now() }];
|
||
return next.length > TRANSCRIPT_MAX ? next.slice(-TRANSCRIPT_MAX) : next;
|
||
});
|
||
}, []);
|
||
|
||
// Newest-at-top — pin scroll to top on each new line.
|
||
const transcriptRef = useRef<HTMLDivElement>(null);
|
||
useEffect(() => {
|
||
const el = transcriptRef.current;
|
||
if (!el) return;
|
||
el.scrollTop = 0;
|
||
}, [transcript.length]);
|
||
|
||
// Subscribe to widget-api events for capability handshake completion,
|
||
// live events, and theme updates. The `api` itself is constructed in
|
||
// main.tsx BEFORE React's first render so its postMessage listener is
|
||
// already attached — this effect only wires React state to the api's
|
||
// event surface. WidgetApi.on('ready', ...) self-replays if the
|
||
// handshake already finished by the time we attach.
|
||
useEffect(() => {
|
||
let disposed = false;
|
||
|
||
api.on('ready', () => {
|
||
setHandshakeOk(true);
|
||
append({ kind: 'diag', text: t('diag.ready') });
|
||
append({ kind: 'diag', text: t('diag.checking-status') });
|
||
|
||
void (async () => {
|
||
// Timeline-resume: scan the recent room history BEFORE firing
|
||
// ping. Discord's QR flow doesn't have multi-step prompts (no
|
||
// phone/code/password ladder), but a reload during an active QR
|
||
// scan SHOULD restore the QR panel — otherwise the user reloads,
|
||
// sees disconnected, hits «Войти по QR» again, and the bridge
|
||
// creates a SECOND remoteauth session in parallel with the first
|
||
// (commands.go has no session-deduplication; each call spins a
|
||
// fresh remoteauth.Client goroutine). The hydrate path here is
|
||
// identical in shape to the TG widget's: pull notices, images,
|
||
// and redactions in parallel and feed them chronologically into
|
||
// the hydrate reducer.
|
||
let hydrated = false;
|
||
try {
|
||
const settled = await Promise.allSettled([
|
||
api.readTimeline({ limit: 30, type: 'm.room.message', msgtype: 'm.notice' }),
|
||
api.readTimeline({ limit: 30, type: 'm.room.message', msgtype: 'm.text' }),
|
||
// QR images: Discord doesn't rotate, so 10 events is plenty
|
||
// (each login attempt produces exactly one m.image). Keep
|
||
// headroom for back-history if the user did multiple
|
||
// attempts in this room over time.
|
||
api.readTimeline({ limit: 10, type: 'm.room.message', msgtype: 'm.image' }),
|
||
api.readTimeline({ limit: 10, type: 'm.room.redaction' }),
|
||
]);
|
||
if (disposed) return;
|
||
const pickValue = (s: PromiseSettledResult<RoomEvent[]>): RoomEvent[] =>
|
||
s.status === 'fulfilled' ? s.value : [];
|
||
const notices = pickValue(settled[0]);
|
||
const texts = pickValue(settled[1]);
|
||
const qrImages = pickValue(settled[2]);
|
||
const redactions = pickValue(settled[3]);
|
||
|
||
const fromBot = (events: RoomEvent[]) =>
|
||
events.filter((e) => e.sender === bootstrap.botMxid);
|
||
|
||
// Sort by origin_server_ts ascending, tie-break on event_id.
|
||
// Without the tie-break, equal-timestamp events from different
|
||
// streams could process in nondeterministic order.
|
||
const merged = [
|
||
...fromBot(notices),
|
||
...fromBot(texts),
|
||
...fromBot(qrImages),
|
||
...fromBot(redactions),
|
||
].sort((a, b) => {
|
||
const tsDiff = a.origin_server_ts - b.origin_server_ts;
|
||
if (tsDiff !== 0) return tsDiff;
|
||
return a.event_id < b.event_id ? -1 : a.event_id > b.event_id ? 1 : 0;
|
||
});
|
||
|
||
const inputs: HydrateInput[] = merged.map((e) => ({
|
||
ev: parseEvent(e),
|
||
ts: e.origin_server_ts,
|
||
}));
|
||
const restored = hydrateFromTimeline(inputs);
|
||
|
||
if (restored) {
|
||
// Conservative transcript replay. m.image events are replaced
|
||
// with a generic «QR-код выдан» diag — never replay the raw
|
||
// discord.com/ra/<token> body, that would persist the login
|
||
// token in DOM history past the bridge's redaction. Bot
|
||
// notices replay verbatim (they're already redacted of
|
||
// sensitive data by the bridge).
|
||
let appendedAnyHistory = false;
|
||
const seenQrIds = new Set<string>();
|
||
for (const e of merged) {
|
||
if (seenEventIds.current.has(e.event_id)) continue;
|
||
seenEventIds.current.add(e.event_id);
|
||
const parsed = parseEvent(e);
|
||
if (parsed.kind === 'qr_displayed') {
|
||
seenQrIds.add(parsed.eventId);
|
||
if (parsed.replacesEventId) seenQrIds.add(parsed.replacesEventId);
|
||
append({ kind: 'diag', text: t('diag.qr-issued') });
|
||
appendedAnyHistory = true;
|
||
} else if (parsed.kind === 'qr_redacted') {
|
||
if (seenQrIds.has(parsed.redactsEventId)) {
|
||
append({ kind: 'diag', text: t('diag.qr-consumed') });
|
||
appendedAnyHistory = true;
|
||
}
|
||
} else if (e.type === 'm.room.message' && e.content.msgtype !== 'm.image') {
|
||
// m.text / m.notice — body is safe to replay verbatim,
|
||
// BUT we still scrub any login-URL-shaped substring as
|
||
// belt-and-suspenders against future bridge wording
|
||
// drift that could echo the URL through a notice.
|
||
append({
|
||
kind: 'from-bot',
|
||
text: `← ${scrubLoginSecret(e.content.body ?? '')}`,
|
||
});
|
||
appendedAnyHistory = true;
|
||
}
|
||
}
|
||
if (appendedAnyHistory) {
|
||
append({ kind: 'diag', text: t('diag.history-marker') });
|
||
}
|
||
|
||
dispatch({ kind: 'hydrate', state: restored });
|
||
hydrated = true;
|
||
}
|
||
} catch {
|
||
if (!disposed) {
|
||
append({ kind: 'diag', text: t('diag.history-unavailable') });
|
||
}
|
||
}
|
||
|
||
if (disposed) return;
|
||
if (!hydrated) {
|
||
// Discord's status probe is `ping`, not `list-logins`. The reply
|
||
// routes through the reducer to disconnected / connected /
|
||
// connected_dead.
|
||
api.sendCommand('ping').catch((err) => {
|
||
if (disposed) return;
|
||
append({
|
||
kind: 'error',
|
||
text: t('diag.send-failed', { message: (err as Error).message }),
|
||
});
|
||
});
|
||
}
|
||
})();
|
||
});
|
||
|
||
api.on('themeChange', (name) => setTheme(name));
|
||
|
||
api.on('liveEvent', (ev: RoomEvent) => {
|
||
if (seenEventIds.current.has(ev.event_id)) return;
|
||
seenEventIds.current.add(ev.event_id);
|
||
// Defense-in-depth sender filter — the host's strict 1:1 invariant
|
||
// already guarantees this, but pinning to bootstrap.botMxid prevents
|
||
// (a) skipping our own outbound echoes (already appended optimistically),
|
||
// (b) third-party noise that somehow slips past the 1:1 invariant.
|
||
if (ev.sender !== bootstrap.botMxid) return;
|
||
|
||
const event = parseEvent(ev);
|
||
|
||
// Transcript routing is GATED on the parser's verdict, not raw event
|
||
// type. Same logic as TG widget: m.image bodies are NEVER appended
|
||
// verbatim (they ARE the login secret); QR-redaction diag fires only
|
||
// for the active QR.
|
||
if (event.kind === 'qr_displayed') {
|
||
append({ kind: 'diag', text: t('diag.qr-issued') });
|
||
} else if (event.kind === 'qr_redacted') {
|
||
const liveState = stateRef.current;
|
||
if (
|
||
liveState.kind === 'awaiting_qr_scan' &&
|
||
liveState.qrEventId === event.redactsEventId
|
||
) {
|
||
append({ kind: 'diag', text: t('diag.qr-consumed') });
|
||
}
|
||
} else if (ev.type === 'm.room.message' && ev.content.msgtype !== 'm.image') {
|
||
const body = ev.content.body ?? '';
|
||
append({ kind: 'from-bot', text: `← ${scrubLoginSecret(body)}` });
|
||
}
|
||
|
||
dispatch({ kind: 'event', event });
|
||
|
||
// Fire `ping` after lifecycle transitions that need authoritative
|
||
// state reconciliation:
|
||
// * login_success — the success line lacks the discordId; ping
|
||
// picks it up so the connected pill can show the snowflake.
|
||
// * reconnect_ok / reconnect_no_op — flips us back into connected
|
||
// but with potentially-stale handle; ping refreshes.
|
||
// * already_logged_in — bridge says we tried login while already
|
||
// in. Without a re-ping the QR-form stays open with a warn
|
||
// banner forever (no QR will ever come because the bridge
|
||
// bails before remoteauth.New). Re-pinging routes us to the
|
||
// connected pill so the user can click logout if they wanted
|
||
// a fresh login.
|
||
if (
|
||
event.kind === 'login_success' ||
|
||
event.kind === 'reconnect_ok' ||
|
||
event.kind === 'reconnect_no_op' ||
|
||
event.kind === 'already_logged_in'
|
||
) {
|
||
api.sendCommand('ping').catch(() => {
|
||
/* surface in diag is overkill; the connected pill still shows
|
||
the handle even without the snowflake */
|
||
});
|
||
}
|
||
});
|
||
|
||
append({ kind: 'diag', text: t('diag.connecting') });
|
||
|
||
return () => {
|
||
disposed = true;
|
||
api.dispose();
|
||
};
|
||
// `api`, `bootstrap`, `t`, and `append` are stable for the App's lifetime.
|
||
// eslint-disable-next-line react-hooks/exhaustive-deps
|
||
}, []);
|
||
|
||
// Outbound bare-command + transcript echo. Errors append to transcript
|
||
// AND rethrow — callers decide whether to roll back optimistic transitions.
|
||
// `api` is a stable singleton owned by main.tsx; closing over it directly
|
||
// is safe (the App's lifetime is the iframe's, and api.dispose() in the
|
||
// unmount cleanup makes any in-flight sends fail loudly).
|
||
const sendBare = useCallback(
|
||
async (command: string): Promise<void> => {
|
||
append({ kind: 'from-user', text: `→ ${command}` });
|
||
try {
|
||
await api.sendCommand(command);
|
||
} catch (err) {
|
||
append({
|
||
kind: 'error',
|
||
text: t('diag.send-failed', { message: (err as Error).message }),
|
||
});
|
||
throw err;
|
||
}
|
||
},
|
||
[append, api, t]
|
||
);
|
||
|
||
// In-flight guard against double-tap. The button is on the disconnected
|
||
// screen which unmounts as soon as state advances, BUT a rapid second
|
||
// click can fire in the microtask window between dispatch and the next
|
||
// Preact commit (especially on Android WebView, where a tap-rebound can
|
||
// synthesise a second click). For login-qr, a duplicate would spin a
|
||
// SECOND remoteauth goroutine on the bridge in parallel — harmless but
|
||
// wastes a remoteauth session.
|
||
const loginInFlight = useRef(false);
|
||
|
||
const onClickLoginQr = useCallback(async () => {
|
||
if (loginInFlight.current) return;
|
||
loginInFlight.current = true;
|
||
dispatch({ kind: 'start_qr_login' });
|
||
try {
|
||
await sendBare('login-qr');
|
||
} catch {
|
||
dispatch({ kind: 'cancel_pending' });
|
||
} finally {
|
||
loginInFlight.current = false;
|
||
}
|
||
}, [sendBare]);
|
||
|
||
// Cancel is LOCAL — Discord legacy mautrix has no `cancel` command.
|
||
// Returns the widget to disconnected; the bridge's remoteauth goroutine
|
||
// continues until success / failure / internal timeout.
|
||
const onClickCancel = useCallback(() => {
|
||
dispatch({ kind: 'cancel_pending' });
|
||
}, []);
|
||
|
||
const onClickRefresh = useCallback(async () => {
|
||
if (refreshing) return;
|
||
setRefreshing(true);
|
||
const start = Date.now();
|
||
try {
|
||
await sendBare('ping');
|
||
} catch {
|
||
/* transcript carries the failure */
|
||
}
|
||
// 500 ms minimum visible loading state — without this, a fast healthy
|
||
// transport (<100ms round-trip) skips a paint frame entirely and the
|
||
// click goes visually unacknowledged.
|
||
const elapsed = Date.now() - start;
|
||
if (elapsed < 500) {
|
||
await new Promise<void>((resolve) => {
|
||
window.setTimeout(resolve, 500 - elapsed);
|
||
});
|
||
}
|
||
setRefreshing(false);
|
||
}, [refreshing, sendBare]);
|
||
|
||
const onConfirmLogout = useCallback(async () => {
|
||
dispatch({ kind: 'request_logout' });
|
||
try {
|
||
await sendBare('logout');
|
||
} catch {
|
||
// Recovery: refire ping so the reducer recalibrates from bridge truth
|
||
// instead of leaving the UI stuck in logging_out forever.
|
||
sendBare('ping').catch(() => {
|
||
/* user can hit refresh */
|
||
});
|
||
}
|
||
}, [sendBare]);
|
||
|
||
const onClickReconnect = useCallback(async () => {
|
||
// Carry the current handle through `reconnecting` so the post-reconnect
|
||
// success path can flip directly to `connected{handle}` without
|
||
// bouncing through `unknown`. The handle is read from whichever
|
||
// pre-reconnect state we're in (connected_dead is the typical
|
||
// entry, but a manual disconnect path could leave us in connected
|
||
// and trigger reconnect from there).
|
||
const handle =
|
||
state.kind === 'connected_dead' || state.kind === 'connected'
|
||
? state.handle
|
||
: undefined;
|
||
dispatch({ kind: 'request_reconnect', handle });
|
||
try {
|
||
await sendBare('reconnect');
|
||
} catch {
|
||
sendBare('ping').catch(() => {
|
||
/* user can hit refresh */
|
||
});
|
||
}
|
||
}, [sendBare, state]);
|
||
|
||
// Convenience: render a status pill with optional recovery button.
|
||
type StatusRowProps = {
|
||
tone: 'connected' | 'disconnected' | 'checking';
|
||
label: string;
|
||
recovery?: { label: string; icon?: ComponentChildren; onClick: () => void; disabled?: boolean };
|
||
};
|
||
const StatusRow = ({ tone, label, recovery }: StatusRowProps) => {
|
||
const pill = (
|
||
<span class={`section-status ${tone}`} role="status">
|
||
<span class="dot" />
|
||
{label}
|
||
</span>
|
||
);
|
||
if (!recovery) return pill;
|
||
return (
|
||
<div class="section-recovery-row">
|
||
{pill}
|
||
<button
|
||
type="button"
|
||
class="recovery-action"
|
||
onClick={recovery.onClick}
|
||
disabled={recovery.disabled}
|
||
>
|
||
{recovery.icon ?? <RefreshIcon />}
|
||
{recovery.label}
|
||
</button>
|
||
</div>
|
||
);
|
||
};
|
||
|
||
return (
|
||
<div class="app">
|
||
{/* Hero is OWNED BY THE HOST (BotShell + BotShellHero). The widget no
|
||
* longer renders an avatar/name/handle/description block — the host
|
||
* panel above the iframe carries that information plus the
|
||
* three-dots menu. «О боте» lives HERE in the widget body so it
|
||
* sits adjacent to the login/logout actions it explains. */}
|
||
|
||
{handshakeOk && state.kind === 'unknown' ? (
|
||
<section class="section">
|
||
<StatusRow
|
||
tone="checking"
|
||
label={t('status.unknown')}
|
||
recovery={{ label: t('card.refresh.label'), onClick: onClickRefresh }}
|
||
/>
|
||
</section>
|
||
) : null}
|
||
|
||
{handshakeOk && state.kind === 'disconnected' ? (
|
||
<section class="section">
|
||
<StatusRow tone="disconnected" label={t('status.disconnected')} />
|
||
{state.lastError ? (
|
||
<div
|
||
class={errorTone(state.lastError) === 'warn' ? 'auth-card-warn' : 'auth-card-error'}
|
||
style={{ marginBottom: '14px' }}
|
||
>
|
||
{localizeError(state.lastError, t)}
|
||
</div>
|
||
) : null}
|
||
<div class="command-grid">
|
||
<button class="command-card" type="button" onClick={onClickLoginQr}>
|
||
<div class="command-card-body">
|
||
<div class="command-card-name">{t('card.login-qr.name')}</div>
|
||
<div class="command-card-desc">{t('card.login-qr.desc')}</div>
|
||
</div>
|
||
<span class="command-card-chevron" aria-hidden="true">
|
||
›
|
||
</span>
|
||
</button>
|
||
<button
|
||
class={`command-card${refreshing ? ' refreshing' : ''}`}
|
||
type="button"
|
||
onClick={onClickRefresh}
|
||
disabled={refreshing}
|
||
>
|
||
<div class="command-card-body">
|
||
<div class="command-card-name">{t('card.refresh.name')}</div>
|
||
<div class="command-card-desc">
|
||
{refreshing ? t('card.refresh.in-flight') : t('card.refresh.desc')}
|
||
</div>
|
||
</div>
|
||
<span class="command-card-chevron" aria-hidden="true">
|
||
<RefreshIcon />
|
||
</span>
|
||
</button>
|
||
<AboutCard t={t} onOpen={() => setAboutOpen(true)} />
|
||
</div>
|
||
</section>
|
||
) : null}
|
||
|
||
{state.kind === 'awaiting_qr_scan' ? (
|
||
<section class="section">
|
||
<QrPanel state={state} t={t} onCancel={onClickCancel} />
|
||
</section>
|
||
) : null}
|
||
|
||
{state.kind === 'qr_verifying' ? (
|
||
<section class="section">
|
||
<StatusRow
|
||
tone="checking"
|
||
label={t('status.qr-verifying')}
|
||
recovery={{ label: t('card.refresh.label'), onClick: onClickRefresh }}
|
||
/>
|
||
</section>
|
||
) : null}
|
||
|
||
{state.kind === 'logging_out' ? (
|
||
<section class="section">
|
||
<StatusRow
|
||
tone="checking"
|
||
label={t('status.logging-out')}
|
||
recovery={{ label: t('card.refresh.label'), onClick: onClickRefresh }}
|
||
/>
|
||
</section>
|
||
) : null}
|
||
|
||
{state.kind === 'reconnecting' ? (
|
||
<section class="section">
|
||
<StatusRow
|
||
tone="checking"
|
||
label={t('status.reconnecting')}
|
||
recovery={{ label: t('card.refresh.label'), onClick: onClickRefresh }}
|
||
/>
|
||
</section>
|
||
) : null}
|
||
|
||
{state.kind === 'connected' ? (
|
||
<section class="section">
|
||
<StatusRow
|
||
tone="connected"
|
||
label={
|
||
state.handle
|
||
? t('status.connected-as', { handle: state.handle })
|
||
: t('status.connected')
|
||
}
|
||
/>
|
||
<div class="command-grid">
|
||
<LogoutCard t={t} onConfirm={onConfirmLogout} />
|
||
<AboutCard t={t} onOpen={() => setAboutOpen(true)} />
|
||
</div>
|
||
</section>
|
||
) : null}
|
||
|
||
{state.kind === 'connected_dead' ? (
|
||
<section class="section">
|
||
<StatusRow
|
||
tone="checking"
|
||
label={
|
||
state.reason === 'connection_dead'
|
||
? t('status.connection-dead')
|
||
: t('status.token-stored')
|
||
}
|
||
/>
|
||
<div class="command-grid">
|
||
{/* Reconnect — primary action for this state. The button uses
|
||
* the same command-card chrome so it visually matches Login /
|
||
* Logout cards. */}
|
||
<button class="command-card" type="button" onClick={onClickReconnect}>
|
||
<div class="command-card-body">
|
||
<div class="command-card-name">{t('card.reconnect.name')}</div>
|
||
<div class="command-card-desc">{t('card.reconnect.desc')}</div>
|
||
</div>
|
||
<span class="command-card-chevron" aria-hidden="true">
|
||
›
|
||
</span>
|
||
</button>
|
||
<LogoutCard t={t} onConfirm={onConfirmLogout} />
|
||
<AboutCard t={t} onOpen={() => setAboutOpen(true)} />
|
||
</div>
|
||
</section>
|
||
) : null}
|
||
|
||
{aboutOpen ? <AboutModal t={t} onClose={() => setAboutOpen(false)} /> : null}
|
||
|
||
<section class="section">
|
||
<div ref={transcriptRef} class="transcript" role="log" aria-live="polite">
|
||
{transcript.length === 0 ? (
|
||
<div class="transcript-empty">{/* placeholder */}</div>
|
||
) : (
|
||
transcript
|
||
.slice()
|
||
.reverse()
|
||
.map((line) => (
|
||
<div key={line.id} class={`transcript-line ${line.kind}`}>
|
||
<span class="ts">{formatTime(line.ts)}</span>
|
||
<span class="body">
|
||
{line.kind === 'from-bot' ? renderBody(line.text) : line.text}
|
||
</span>
|
||
</div>
|
||
))
|
||
)}
|
||
</div>
|
||
</section>
|
||
</div>
|
||
);
|
||
}
|