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<!doctype html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>CanvasToAPI Browser Client</title>
<script src="https://cdn.tailwindcss.com"></script>
<style>
:root {
color-scheme: dark;
}
#logs::-webkit-scrollbar {
width: 6px;
}
#logs::-webkit-scrollbar-track {
background: rgba(15, 23, 42, 0.1);
}
#logs::-webkit-scrollbar-thumb {
background: rgba(51, 65, 85, 0.5);
border-radius: 10px;
}
#logs::-webkit-scrollbar-thumb:hover {
background: rgba(51, 65, 85, 0.8);
}
.control-chip {
border: 1px solid rgb(51 65 85 / 1);
background: rgb(2 6 23 / 0.7);
color: rgb(226 232 240 / 1);
}
.log-entry:hover {
background: rgba(15, 23, 42, 0.35);
}
body.theme-light {
color-scheme: light;
background: linear-gradient(180deg, #f8fbff 0%, #eef4fb 100%);
color: #0f172a;
}
body.theme-light #page-header,
body.theme-light #console-panel {
border-color: #d8e3f0;
box-shadow: 0 18px 60px rgba(148, 163, 184, 0.18);
}
body.theme-light #page-header {
background: rgba(255, 255, 255, 0.92);
}
body.theme-light #console-panel {
background: rgba(255, 255, 255, 0.76);
}
body.theme-light #console-toolbar {
border-color: #d8e3f0;
background: rgba(241, 245, 249, 0.92);
}
body.theme-light #logs {
background: rgba(248, 250, 252, 0.94);
}
body.theme-light #logs::-webkit-scrollbar-track {
background: rgba(148, 163, 184, 0.12);
}
body.theme-light #logs::-webkit-scrollbar-thumb {
background: rgba(148, 163, 184, 0.55);
}
body.theme-light .page-title {
color: #0f172a !important;
}
body.theme-light .page-subtitle,
body.theme-light .field-label,
body.theme-light .panel-title,
body.theme-light .footer-item {
color: #475569 !important;
}
body.theme-light .field-hint,
body.theme-light .meta-text,
body.theme-light .log-timestamp,
body.theme-light .initial-log {
color: #64748b !important;
}
body.theme-light .brand-mark {
color: #0891b2 !important;
}
.brand-link {
color: inherit;
text-decoration: none;
transition: opacity 0.2s ease;
}
.brand-link:hover {
opacity: 0.82;
}
body.theme-light .control-chip,
body.theme-light #ws-endpoint,
body.theme-light #client-label,
body.theme-light #api-key {
border-color: #cbd5e1 !important;
background: rgba(255, 255, 255, 0.96) !important;
color: #0f172a !important;
}
body.theme-light #save-btn {
background: #e2e8f0 !important;
color: #0f172a !important;
}
body.theme-light #save-btn:hover {
background: #cbd5e1 !important;
}
body.theme-light #clear-logs {
color: #64748b !important;
}
body.theme-light #clear-logs:hover {
color: #0f172a !important;
}
body.theme-light .log-entry:hover {
background: rgba(226, 232, 240, 0.8);
}
body.theme-light .log-info {
color: #334155 !important;
}
body.theme-light .log-debug {
color: #64748b !important;
}
body.theme-light .log-warn {
color: #b45309 !important;
}
body.theme-light .log-error {
color: #dc2626 !important;
}
</style>
</head>
<body class="min-h-screen overflow-hidden bg-slate-950 font-sans text-slate-100 selection:bg-cyan-500/30">
<div class="flex h-screen w-full flex-col overflow-hidden">
<header
id="page-header"
class="mb-3 flex flex-none flex-col gap-2 rounded-[1.75rem] border border-slate-800 bg-slate-900/80 p-4 shadow-2xl shadow-slate-950/30 md:gap-2 md:p-5"
>
<div class="flex items-center justify-between gap-3">
<div class="flex min-w-0 items-center gap-2">
<span class="relative flex h-2 w-2">
<span class="animate-ping absolute inline-flex h-full w-full rounded-full bg-cyan-400 opacity-75"></span>
<span class="relative inline-flex rounded-full h-2 w-2 bg-cyan-500"></span>
</span>
<a
class="brand-mark brand-link truncate text-xs font-bold text-cyan-400/90"
href="https://github.com/iBUHub/CanvasToAPI"
target="_blank"
rel="noopener noreferrer"
>CanvasToAPI</a>
</div>
<div class="flex shrink-0 items-center gap-2">
<button
id="header-collapse-toggle"
type="button"
class="control-chip rounded-lg px-3 py-1.5 text-[10px] font-bold uppercase tracking-[0.2em] transition hover:border-cyan-500/60 hover:text-white"
></button>
<button
id="locale-toggle"
type="button"
class="control-chip rounded-lg px-3 py-1.5 text-[10px] font-bold uppercase tracking-[0.2em] transition hover:border-cyan-500/60 hover:text-white"
></button>
<button
id="theme-toggle"
type="button"
class="control-chip rounded-lg px-3 py-1.5 text-[10px] font-bold uppercase tracking-[0.2em] transition hover:border-cyan-500/60 hover:text-white"
></button>
</div>
</div>
<div class="min-w-0 -mt-1">
<h1
class="page-title text-2xl font-bold tracking-tight text-white md:text-[2rem] md:leading-tight"
data-i18n="pageTitle"
>
Browser Session Client
</h1>
<p
class="page-subtitle mt-1.5 max-w-2xl text-xs leading-relaxed text-slate-400 md:text-sm"
data-i18n="pageDescription"
>
Proxy Gemini API requests. Save the endpoint, then connect and keep the page open.
</p>
</div>
<div id="header-config-content" class="flex flex-col gap-4">
<div id="header-config-fields" class="grid min-w-0 grid-cols-1 gap-2 md:grid-cols-3 md:gap-4">
<div class="min-w-0 space-y-1.5">
<div class="flex justify-between items-center px-1">
<label
class="field-label text-[10px] uppercase font-bold tracking-wider text-slate-500"
for="ws-endpoint"
data-i18n="serverWsEndpoint"
>
Server WS Endpoint
</label>
</div>
<input
id="ws-endpoint"
placeholder="ws://127.0.0.1:7861/ws"
class="w-full rounded-xl border border-slate-700 bg-slate-950 px-4 py-2 font-mono text-sm text-slate-100 outline-none transition focus:border-cyan-500 focus:ring-1 focus:ring-cyan-500/50"
/>
</div>
<div class="min-w-0 space-y-1.5">
<div class="flex justify-between items-center px-1">
<label
class="field-label text-[10px] uppercase font-bold tracking-wider text-slate-500"
for="client-label"
data-i18n="browserIdentifier"
>
Browser Identifier
</label>
<span class="field-hint text-[10px] text-slate-600 whitespace-nowrap" data-i18n="blankAutoDaily">Blank = auto generate</span>
</div>
<input
id="client-label"
data-i18n-placeholder="clientLabelPlaceholder"
placeholder="Auto-generate a browser tag"
class="w-full rounded-xl border border-slate-700 bg-slate-950 px-4 py-2 font-mono text-sm text-slate-100 outline-none transition focus:border-cyan-500 focus:ring-1 focus:ring-cyan-500/50"
/>
</div>
<div class="min-w-0 space-y-1.5">
<div class="flex justify-between items-center px-1">
<label
class="field-label text-[10px] uppercase font-bold tracking-wider text-slate-500"
for="api-key"
data-i18n="apiKeyLabel"
>
API Key
</label>
</div>
<input
id="api-key"
type="password"
data-i18n-placeholder="apiKeyPlaceholder"
placeholder="Same API key used for requests"
class="w-full rounded-xl border border-slate-700 bg-slate-950 px-4 py-2 font-mono text-sm text-slate-100 outline-none transition focus:border-cyan-500 focus:ring-1 focus:ring-cyan-500/50"
/>
</div>
</div>
<div class="flex flex-col gap-2.5 border-t border-slate-800/80 pt-3 sm:flex-row sm:items-center sm:justify-between">
<div class="flex flex-wrap items-center gap-2">
<button
id="save-btn"
class="flex-1 rounded-xl bg-slate-800 px-4 py-2 text-sm font-bold text-slate-300 transition hover:bg-slate-700 active:scale-95 sm:flex-none"
data-i18n="save"
>
Save
</button>
<button
id="connect-btn"
class="mt-0.5 flex-1 rounded-xl bg-cyan-500 px-6 py-2 text-sm font-bold text-slate-950 transition hover:bg-cyan-400 active:scale-95 disabled:cursor-not-allowed disabled:opacity-50 sm:w-auto sm:min-w-[180px] sm:flex-none"
>
Connect
</button>
<span id="save-tip" class="px-1 text-[10px] font-bold text-emerald-400 opacity-0 transition-opacity" data-i18n="saved">
SAVED!
</span>
</div>
<div class="flex items-center justify-between px-1 sm:min-w-[240px] sm:justify-end sm:gap-6">
<div class="flex items-center gap-2">
<span id="status-indicator" class="h-2 w-2 rounded-full bg-amber-500"></span>
<span id="status-text" class="text-[10px] font-bold uppercase tracking-wide text-amber-500">Disconnected</span>
</div>
<span class="meta-text text-[10px] font-mono text-slate-600">v0.0.7-stable</span>
</div>
</div>
</div>
</header>
<main id="console-panel" class="flex min-h-0 flex-1 flex-col overflow-hidden rounded-[1.75rem] border border-slate-800 bg-black/40 shadow-2xl shadow-slate-950/30 backdrop-blur-sm">
<div id="console-toolbar" class="flex flex-none items-center justify-between border-b border-slate-800 bg-slate-900/40 px-5 py-3 md:px-6">
<div class="flex items-center gap-3">
<div class="flex gap-1">
<div class="w-2.5 h-2.5 rounded-full bg-slate-700"></div>
<div class="w-2.5 h-2.5 rounded-full bg-slate-700"></div>
<div class="w-2.5 h-2.5 rounded-full bg-slate-700"></div>
</div>
<span class="panel-title font-mono text-xs font-semibold text-slate-400" data-i18n="consoleLogsOutput">Console Logs Output</span>
</div>
<button id="clear-logs" class="text-xs font-bold text-slate-500 uppercase tracking-widest hover:text-white transition" data-i18n="clear">
Clear
</button>
</div>
<div id="logs" class="flex-1 space-y-1 overflow-y-auto bg-slate-950/20 p-4 font-mono text-xs leading-relaxed md:p-5">
<div class="initial-log text-slate-500 italic" data-i18n="initialLog">Initializing system... awaiting connection input.</div>
</div>
</main>
</div>
<script>
let RealWebSocket = WebSocket;
try {
const iframe = document.createElement("iframe");
iframe.style.display = "none";
document.body.appendChild(iframe);
if (iframe.contentWindow?.WebSocket) {
RealWebSocket = iframe.contentWindow.WebSocket;
}
} catch {}
const DEFAULT_ENDPOINT = "ws://127.0.0.1:7861/ws";
const API_KEY_STORAGE_KEY = "canvasToApi.apiKey";
const ENDPOINT_STORAGE_KEY = "canvasToApi.wsEndpoint";
const CLIENT_LABEL_MODE_STORAGE_KEY = "canvasToApi.clientLabelMode";
const CLIENT_LABEL_STORAGE_KEY = "canvasToApi.clientLabel";
const AUTO_CLIENT_LABEL_STORAGE_KEY = "canvasToApi.autoClientLabel";
const LEGACY_DAILY_CLIENT_LABEL_STORAGE_KEY = "canvasToApi.dailyClientLabel";
const LOCALE_STORAGE_KEY = "canvasToApi.locale";
const THEME_STORAGE_KEY = "canvasToApi.theme";
const SUPPORTED_LOCALES = ["zh-CN", "en-US"];
const translations = {
"zh-CN": {
apiKeyLabel: "API 密钥",
apiKeyPlaceholder: "输入与请求相同的 API 密钥",
documentTitle: "CanvasToAPI 浏览器客户端",
pageTitle: "浏览器会话客户端",
pageDescription: "代理 Gemini API 请求。先保存配置，再连接，并保持这个页面处于打开状态。",
serverWsEndpoint: "服务端 WS 地址",
browserIdentifier: "浏览器标识",
blankAutoDaily: "留空 = 自动生成",
clientLabelPlaceholder: "自动生成浏览器标签",
save: "保存",
saved: "已保存",
consoleLogsOutput: "控制台日志输出",
clear: "清空",
initialLog: "系统初始化中，等待输入连接配置。",
statusConnected: "已连接",
statusReconnecting: "重连中",
statusConnecting: "连接中",
statusError: "错误",
statusDisconnected: "未连接",
disconnectFromServer: "断开连接",
stopReconnecting: "停止重连",
connectingButton: "连接中...",
retryConnectNow: "立即重试",
connectToServer: "连接",
switchToEnglish: "切换到英文",
switchToChinese: "切换到中文",
switchToLightTheme: "切换到浅色主题",
switchToDarkTheme: "切换到深色主题",
themeLightShort: "浅色",
themeDarkShort: "深色",
headerConfigHide: "收起",
headerConfigHideTitle: "收起配置",
headerConfigShow: "配置",
headerConfigShowTitle: "展开配置",
},
"en-US": {
apiKeyLabel: "API Key",
apiKeyPlaceholder: "Enter the same API key used for requests",
documentTitle: "CanvasToAPI Browser Client",
pageTitle: "Browser Session Client",
pageDescription: "Proxy Gemini API requests. Save the endpoint, then connect and keep the page open.",
serverWsEndpoint: "Server WS Endpoint",
browserIdentifier: "Browser Identifier",
blankAutoDaily: "Blank = auto generate",
clientLabelPlaceholder: "Auto-generate a browser tag",
save: "Save",
saved: "SAVED!",
consoleLogsOutput: "Console Logs Output",
clear: "Clear",
initialLog: "Initializing system... awaiting connection input.",
statusConnected: "Connected",
statusReconnecting: "Reconnecting",
statusConnecting: "Connecting",
statusError: "Error",
statusDisconnected: "Disconnected",
disconnectFromServer: "Disconnect",
stopReconnecting: "Stop Reconnecting",
connectingButton: "Connecting...",
retryConnectNow: "Retry Now",
connectToServer: "Connect",
switchToEnglish: "Switch to English",
switchToChinese: "Switch to Chinese",
switchToLightTheme: "Switch to light theme",
switchToDarkTheme: "Switch to dark theme",
themeLightShort: "Light",
themeDarkShort: "Dark",
headerConfigHide: "Hide",
headerConfigHideTitle: "Hide settings",
headerConfigShow: "Config",
headerConfigShowTitle: "Show settings",
},
};
const safeStorageGet = key => {
try {
return localStorage.getItem(key);
} catch {
return null;
}
};
const safeStorageSet = (key, value) => {
try {
localStorage.setItem(key, value);
} catch {}
};
const safeStorageRemove = key => {
try {
localStorage.removeItem(key);
} catch {}
};
const getPreferredLocale = () => {
const savedLocale = safeStorageGet(LOCALE_STORAGE_KEY);
if (SUPPORTED_LOCALES.includes(savedLocale)) return savedLocale;
const browserLocale = typeof navigator !== "undefined" ? navigator.language : "";
return browserLocale?.toLowerCase().startsWith("zh") ? "zh-CN" : "en-US";
};
const getPreferredTheme = () => {
const savedTheme = safeStorageGet(THEME_STORAGE_KEY);
if (savedTheme === "light" || savedTheme === "dark") return savedTheme;
return window.matchMedia?.("(prefers-color-scheme: light)")?.matches ? "light" : "dark";
};
const formatMessage = (template, vars = {}) =>
String(template || "").replace(/\{(\w+)\}/g, (_, key) => String(vars[key] ?? ""));
const t = (key, vars = {}) => {
const localePack = translations[currentLocale] || translations["en-US"];
const fallbackPack = translations["en-US"];
return formatMessage(localePack[key] ?? fallbackPack[key] ?? key, vars);
};
const generateRandomSuffix = (length = 4) =>
Array.from(crypto.getRandomValues(new Uint8Array(length)))
.map(value => (value % 36).toString(36))
.join("")
.toUpperCase();
const sanitizeApiKey = value => String(value || "").trim();
const generateAutoClientLabel = () => `browser-${generateRandomSuffix(8)}`;
const sanitizeClientLabel = value => String(value || "").trim().replace(/\s+/g, " ").slice(0, 64);
const getAutoClientLabel = () => {
const savedAutoLabel = sanitizeClientLabel(safeStorageGet(AUTO_CLIENT_LABEL_STORAGE_KEY));
if (savedAutoLabel) {
return savedAutoLabel;
}
const legacyDailyLabel = sanitizeClientLabel(safeStorageGet(LEGACY_DAILY_CLIENT_LABEL_STORAGE_KEY));
if (legacyDailyLabel) {
safeStorageSet(AUTO_CLIENT_LABEL_STORAGE_KEY, legacyDailyLabel);
return legacyDailyLabel;
}
const newLabel = generateAutoClientLabel();
safeStorageSet(AUTO_CLIENT_LABEL_STORAGE_KEY, newLabel);
return newLabel;
};
let currentLocale = getPreferredLocale();
let currentTheme = getPreferredTheme();
let currentApiKey = sanitizeApiKey(safeStorageGet(API_KEY_STORAGE_KEY));
let currentEndpoint = safeStorageGet(ENDPOINT_STORAGE_KEY) || DEFAULT_ENDPOINT;
let currentClientLabelMode = safeStorageGet(CLIENT_LABEL_MODE_STORAGE_KEY) || "auto";
let currentClientLabel =
currentClientLabelMode === "manual"
? sanitizeClientLabel(safeStorageGet(CLIENT_LABEL_STORAGE_KEY)) || getAutoClientLabel()
: getAutoClientLabel();
let currentStatus = "disconnected";
let isHeaderConfigCollapsed = false;
if (currentClientLabelMode === "manual" && !safeStorageGet(CLIENT_LABEL_STORAGE_KEY)) {
currentClientLabelMode = "auto";
}
if (currentClientLabelMode === "daily") {
currentClientLabelMode = "auto";
}
const applyTheme = theme => {
currentTheme = theme === "light" ? "light" : "dark";
document.body.classList.toggle("theme-light", currentTheme === "light");
safeStorageSet(THEME_STORAGE_KEY, currentTheme);
};
const updateHeaderControls = () => {
const localeToggle = document.getElementById("locale-toggle");
const themeToggle = document.getElementById("theme-toggle");
if (localeToggle) {
localeToggle.textContent = currentLocale === "zh-CN" ? "EN" : "中";
localeToggle.title = currentLocale === "zh-CN" ? t("switchToEnglish") : t("switchToChinese");
}
if (themeToggle) {
themeToggle.textContent = currentTheme === "dark" ? t("themeLightShort") : t("themeDarkShort");
themeToggle.title = currentTheme === "dark" ? t("switchToLightTheme") : t("switchToDarkTheme");
}
const headerCollapseToggle = document.getElementById("header-collapse-toggle");
if (headerCollapseToggle) {
const isCollapsed = isHeaderConfigCollapsed;
headerCollapseToggle.textContent = isCollapsed ? t("headerConfigShow") : t("headerConfigHide");
headerCollapseToggle.title = isCollapsed ? t("headerConfigShowTitle") : t("headerConfigHideTitle");
headerCollapseToggle.setAttribute("aria-label", headerCollapseToggle.title);
headerCollapseToggle.setAttribute("aria-expanded", String(!isCollapsed));
}
};
const applyHeaderCollapseState = () => {
const configContent = document.getElementById("header-config-content");
const headerCollapseToggle = document.getElementById("header-collapse-toggle");
const shouldCollapse = isHeaderConfigCollapsed;
if (configContent) {
configContent.classList.toggle("hidden", shouldCollapse);
}
updateHeaderControls();
};
const applyI18n = () => {
document.documentElement.lang = currentLocale === "zh-CN" ? "zh-CN" : "en-US";
document.title = t("documentTitle");
document.querySelectorAll("[data-i18n]").forEach(element => {
element.textContent = t(element.dataset.i18n);
});
document.querySelectorAll("[data-i18n-placeholder]").forEach(element => {
element.placeholder = t(element.dataset.i18nPlaceholder);
});
updateHeaderControls();
};
const setStatus = status => {
const textEl = document.getElementById("status-text");
const indicatorEl = document.getElementById("status-indicator");
const connectBtn = document.getElementById("connect-btn");
currentStatus = status;
textEl.textContent = t(`status${status.charAt(0).toUpperCase()}${status.slice(1)}`);
connectBtn.disabled = false;
if (status === "connected") {
textEl.className = "text-[10px] font-bold uppercase tracking-wide text-emerald-400";
indicatorEl.className = "h-2 w-2 rounded-full bg-emerald-400 shadow-[0_0_8px_rgba(52,211,153,0.6)]";
connectBtn.textContent = t("disconnectFromServer");
connectBtn.className = "mt-0.5 flex-1 rounded-xl bg-rose-500 px-6 py-2 text-sm font-bold text-white transition hover:bg-rose-400 active:scale-95 sm:w-auto sm:min-w-[180px] sm:flex-none";
} else if (status === "reconnecting") {
textEl.className = "text-[10px] font-bold uppercase tracking-wide text-amber-500";
indicatorEl.className = "h-2 w-2 rounded-full bg-amber-500 animate-pulse";
connectBtn.textContent = t("stopReconnecting");
connectBtn.className = "mt-0.5 flex-1 rounded-xl bg-rose-500/80 px-6 py-2 text-sm font-bold text-white transition hover:bg-rose-500 active:scale-95 sm:w-auto sm:min-w-[180px] sm:flex-none";
} else if (status === "connecting") {
textEl.className = "text-[10px] font-bold uppercase tracking-wide text-amber-500";
indicatorEl.className = "h-2 w-2 rounded-full bg-amber-500 animate-pulse";
connectBtn.textContent = t("connectingButton");
connectBtn.disabled = true;
} else if (status === "error") {
textEl.className = "text-[10px] font-bold uppercase tracking-wide text-rose-500";
indicatorEl.className = "h-2 w-2 rounded-full bg-rose-500 shadow-[0_0_8px_rgba(244,63,94,0.6)]";
connectBtn.textContent = t("retryConnectNow");
connectBtn.className = "mt-0.5 flex-1 rounded-xl bg-cyan-500 px-6 py-2 text-sm font-bold text-slate-950 transition hover:bg-cyan-400 active:scale-95 sm:w-auto sm:min-w-[180px] sm:flex-none";
} else {
textEl.className = "text-[10px] font-bold uppercase tracking-wide text-amber-500";
indicatorEl.className = "h-2 w-2 rounded-full bg-amber-500";
connectBtn.textContent = t("connectToServer");
connectBtn.className = "mt-0.5 flex-1 rounded-xl bg-cyan-500 px-6 py-2 text-sm font-bold text-slate-950 transition hover:bg-cyan-400 active:scale-95 sm:w-auto sm:min-w-[180px] sm:flex-none";
}
};
const b64toBlob = (b64Data, contentType = "", sliceSize = 512) => {
const byteCharacters = atob(b64Data);
const byteArrays = [];
for (let offset = 0; offset < byteCharacters.length; offset += sliceSize) {
const slice = byteCharacters.slice(offset, offset + sliceSize);
const byteNumbers = new Array(slice.length);
for (let i = 0; i < slice.length; i++) {
byteNumbers[i] = slice.charCodeAt(i);
}
const byteArray = new Uint8Array(byteNumbers);
byteArrays.push(byteArray);
}
return new Blob(byteArrays, { type: contentType });
};
const Logger = {
_log(level, levelName, ...messages) {
if (!this.enabled || level < this.currentLevel) return;
let consolePrefix;
if (level === this.LEVELS.INFO) {
consolePrefix = "[ProxyClient]";
} else {
const levelLabel = levelName.charAt(0) + levelName.slice(1).toLowerCase();
consolePrefix = `[ProxyClient] ${levelLabel}:`;
}
switch (level) {
case this.LEVELS.ERROR:
console.error(consolePrefix, ...messages);
break;
case this.LEVELS.WARN:
console.warn(consolePrefix, ...messages);
break;
case this.LEVELS.DEBUG:
console.debug(consolePrefix, ...messages);
break;
default:
console.log(consolePrefix, ...messages);
}
const logContainer = document.getElementById("logs");
if (!logContainer) return;
const logElement = document.createElement("div");
const timeStr = new Date().toLocaleTimeString(currentLocale, {
hour: "2-digit",
hour12: false,
minute: "2-digit",
second: "2-digit",
});
let textColorClass = "text-slate-300";
if (level === this.LEVELS.ERROR) textColorClass = "text-rose-400";
else if (level === this.LEVELS.WARN) textColorClass = "text-amber-300";
else if (level === this.LEVELS.DEBUG) textColorClass = "text-slate-500";
else if (messages.join(" ").includes("?")) textColorClass = "text-emerald-400";
const prefix = level === this.LEVELS.INFO ? "" : `[${levelName}] `;
logElement.className = `log-entry log-${levelName.toLowerCase()} ${textColorClass} break-all rounded px-1 py-0.5 transition-colors duration-150 hover:bg-slate-900/50`;
logElement.innerHTML = `<span class="log-timestamp mr-2 text-slate-600">[${timeStr}]</span>${prefix}${messages.join(" ")}`;
logContainer.appendChild(logElement);
logContainer.scrollTop = logContainer.scrollHeight;
},
currentLevel: 1,
enabled: true,
LEVELS: { DEBUG: 0, ERROR: 3, INFO: 1, WARN: 2 },
debug(...messages) {
this._log(this.LEVELS.DEBUG, "DEBUG", ...messages);
},
error(...messages) {
this._log(this.LEVELS.ERROR, "ERROR", ...messages);
},
info(...messages) {
this._log(this.LEVELS.INFO, "INFO", ...messages);
},
output(...messages) {
this.info(...messages);
},
warn(...messages) {
this._log(this.LEVELS.WARN, "WARN", ...messages);
},
};
document.getElementById("clear-logs").addEventListener("click", () => {
document.getElementById("logs").innerHTML = "";
Logger.info("Logs cleared.");
});
class ConnectionManager extends EventTarget {
constructor(endpoint = DEFAULT_ENDPOINT, clientLabel = "", apiKey = "") {
super();
this.endpoint = endpoint;
this.apiKey = sanitizeApiKey(apiKey);
this.clientLabel = sanitizeClientLabel(clientLabel);
this.socket = null;
this.isConnected = false;
this.isAuthenticated = false;
this.reconnectDelay = 5000;
this.reconnectAttempts = 0;
this.reconnectTimer = null;
this.manualDisconnect = false;
this.shouldReconnect = true;
}
updateEndpoint(newEndpoint) {
Logger.output("Endpoint updated to:", newEndpoint);
this.endpoint = newEndpoint;
this.reset();
}
updateApiKey(newApiKey) {
Logger.output("API key updated.");
this.apiKey = sanitizeApiKey(newApiKey);
this.reset();
}
updateClientLabel(newClientLabel) {
Logger.output("Browser identifier updated to:", newClientLabel);
this.clientLabel = sanitizeClientLabel(newClientLabel);
this.reset();
}
reset() {
this._clearReconnectTimer();
this.reconnectAttempts = 0;
}
async establish() {
if (this.isConnected) return Promise.resolve();
const wsUrl = this._buildConnectionUrl();
Logger.output(
"Connecting to server:",
this._maskSensitiveUrl(wsUrl),
this.clientLabel ? `(browser identifier: ${this.clientLabel})` : ""
);
setStatus("connecting");
return new Promise((resolve, reject) => {
let settled = false;
try {
this.manualDisconnect = false;
this.shouldReconnect = true;
this.isConnected = false;
this.isAuthenticated = false;
this.socket = new RealWebSocket(wsUrl);
this.socket.addEventListener("open", () => {
Logger.output("WebSocket connected, waiting for authentication...");
Logger.output("✅ Connection successful!");
this._sendAuthMessage();
setStatus("connecting");
});
this.socket.addEventListener("close", () => {
this.isConnected = false;
this.isAuthenticated = false;
const shouldAutoReconnect = !this.manualDisconnect && this.shouldReconnect;
const closeMessage = this.manualDisconnect
? "Connection closed by user."
: shouldAutoReconnect
? "Connection disconnected, preparing to reconnect..."
: "Connection disconnected.";
Logger.output(closeMessage);
setStatus(shouldAutoReconnect ? "reconnecting" : this.manualDisconnect ? "disconnected" : "error");
this.dispatchEvent(new CustomEvent("disconnected"));
if (shouldAutoReconnect) {
this._scheduleReconnect();
}
});
this.socket.addEventListener("error", error => {
Logger.output(
`WebSocket connection error. Please check if the server is reachable at ${this.endpoint}`
);
setStatus("error");
this.dispatchEvent(new CustomEvent("error", { detail: error }));
if (!settled) {
settled = true;
reject(error);
}
});
this.socket.addEventListener("message", event => {
try {
const payload = JSON.parse(event.data);
if (payload?.event_type === "auth_ack") {
if (payload.authorized) {
this.isConnected = true;
this.isAuthenticated = true;
this.reconnectAttempts = 0;
Logger.output("Connection authenticated successfully!");
setStatus("connected");
this.dispatchEvent(new CustomEvent("connected"));
if (!settled) {
settled = true;
resolve();
}
} else {
this.isConnected = false;
this.isAuthenticated = false;
this.shouldReconnect = false;
Logger.output(
`Authentication failed: ${payload.message || "invalid API key or client label"}`
);
setStatus("error");
if (this.socket && this.socket.readyState === WebSocket.OPEN) {
this.socket.close();
}
if (!settled) {
settled = true;
reject(new Error(payload.message || "WebSocket authentication failed"));
}
}
return;
}
} catch {}
this.dispatchEvent(new CustomEvent("message", { detail: event.data }));
});
} catch (e) {
Logger.output(
"WebSocket initialization failed. Please check address or browser security policy.",
e.message
);
setStatus("error");
reject(e);
}
});
}
disconnect() {
this.manualDisconnect = true;
this.shouldReconnect = false;
this.reset();
if (this.socket) {
this.socket.close();
}
}
transmit(data) {
if (!this.isConnected || !this.isAuthenticated || !this.socket) {
Logger.output("Cannot send data: Connection not established");
return false;
}
this.socket.send(JSON.stringify(data));
return true;
}
_clearReconnectTimer() {
if (this.reconnectTimer) {
clearTimeout(this.reconnectTimer);
this.reconnectTimer = null;
}
}
_scheduleReconnect() {
this.reconnectAttempts++;
this._clearReconnectTimer();
this.reconnectTimer = setTimeout(() => {
Logger.output(`Attempting reconnection ${this.reconnectAttempts} attempt...`);
this.establish().catch(() => {});
}, this.reconnectDelay);
}
_buildConnectionUrl() {
const wsUrl = new URL(this.endpoint, window.location.href);
wsUrl.search = "";
return wsUrl.toString();
}
_sendAuthMessage() {
if (!this.socket || this.socket.readyState !== WebSocket.OPEN) {
return;
}
this.socket.send(JSON.stringify({
apiKey: this.apiKey,
clientLabel: this.clientLabel,
event_type: "authenticate",
}));
}
_maskSensitiveUrl(url) {
try {
const maskedUrl = new URL(url);
if (maskedUrl.searchParams.has("key")) {
maskedUrl.searchParams.set("key", "***");
}
return maskedUrl.toString();
} catch {
return url;
}
}
}
class RequestProcessor {
constructor() {
this.activeOperations = new Map();
this.cancelledAttempts = new Set();
this.targetDomain = "generativelanguage.googleapis.com";
}
_normalizeAttemptId(operationId, requestAttemptId) {
return requestAttemptId || `${operationId}:attempt:legacy`;
}
_getAttemptKey(operationId, requestAttemptId) {
return `${operationId}::${this._normalizeAttemptId(operationId, requestAttemptId)}`;
}
execute(requestSpec, operationId) {
const requestAttemptId = this._normalizeAttemptId(operationId, requestSpec.request_attempt_id);
const attemptKey = this._getAttemptKey(operationId, requestAttemptId);
const existingOperation = this.activeOperations.get(operationId);
if (existingOperation) {
Logger.debug(`Aborting existing operation #${operationId} before starting new attempt`);
existingOperation.abortController.abort();
}
if (this.cancelledAttempts.has(attemptKey)) {
Logger.debug(`Clearing stale cancellation flag for operation #${operationId} attempt ${requestAttemptId}`);
this.cancelledAttempts.delete(attemptKey);
}
const IDLE_TIMEOUT_DURATION = 300000;
const abortController = new AbortController();
const activeOperation = { abortController, requestAttemptId };
this.activeOperations.set(operationId, activeOperation);
let timeoutId = null;
const startIdleTimeout = () =>
new Promise((_, reject) => {
timeoutId = setTimeout(() => {
const error = new Error(`Timeout: ${IDLE_TIMEOUT_DURATION / 1000} seconds without receiving any data`);
abortController.abort();
reject(error);
}, IDLE_TIMEOUT_DURATION);
});
const cancelTimeout = () => {
if (timeoutId) {
clearTimeout(timeoutId);
timeoutId = null;
}
};
const attemptPromise = (async () => {
try {
Logger.debug("Executing request:", requestSpec.method, requestSpec.path);
const requestUrl = this._constructUrl(requestSpec);
const requestConfig = this._buildRequestConfig(requestSpec, abortController.signal);
const response = await fetch(requestUrl, requestConfig);
if (!response.ok) {
const errorBody = await response.text();
const error = new Error(`Google API returned error: ${response.status} ${response.statusText} ${errorBody}`);
error.status = response.status;
throw error;
}
cancelTimeout();
return response;
} catch (error) {
cancelTimeout();
throw error;
}
})();
attemptPromise.catch(() => {});
const responsePromise = Promise.race([attemptPromise, startIdleTimeout()]);
return { abortController, attemptKey, cancelTimeout, requestAttemptId, responsePromise };
}
cancelAllOperations() {
this.activeOperations.forEach(operation => operation.abortController.abort());
this.activeOperations.clear();
}
_constructUrl(requestSpec) {
let pathAndQuery = requestSpec.url;
if (!pathAndQuery) {
const pathSegment = requestSpec.path || "";
const queryParams = new URLSearchParams(requestSpec.query_params);
if (requestSpec.streaming_mode === "fake" && queryParams.has("alt") && queryParams.get("alt") === "sse") {
queryParams.delete("alt");
}
let finalPath = pathSegment;
if (requestSpec.streaming_mode === "fake" && finalPath.includes(":streamGenerateContent")) {
finalPath = finalPath.replace(":streamGenerateContent", ":generateContent");
}
const queryString = queryParams.toString();
pathAndQuery = `${finalPath}${queryString ? "?" + queryString : ""}`;
}
if (pathAndQuery.match(/^https?:\/\//)) {
try {
const urlObj = new URL(pathAndQuery);
const originalUrl = pathAndQuery;
pathAndQuery = urlObj.pathname + urlObj.search;
Logger.output(`Rewriting absolute URL: ${originalUrl} -> ${pathAndQuery}`);
} catch (e) {
Logger.output("URL parsing warning:", e.message);
}
}
let targetHost = this.targetDomain;
if (pathAndQuery.includes("__proxy_host__=")) {
try {
const tempUrl = new URL(pathAndQuery, "http://dummy");
const params = tempUrl.searchParams;
if (params.has("__proxy_host__")) {
targetHost = params.get("__proxy_host__");
params.delete("__proxy_host__");
pathAndQuery = tempUrl.pathname + tempUrl.search;
Logger.debug(`Dynamically switching target host: ${targetHost}`);
}
} catch (e) {
Logger.output("Failed to parse proxy host:", e.message);
}
}
const cleanPath = pathAndQuery.replace(/^\/+/, "");
const finalUrl = `https://${targetHost}/${cleanPath}`;
Logger.debug(`Constructed URL: ${pathAndQuery} -> ${finalUrl}`);
return finalUrl;
}
_buildRequestConfig(requestSpec, signal) {
const config = {
headers: this._sanitizeHeaders(requestSpec.headers),
method: requestSpec.method,
signal,
};
if (["POST", "PUT", "PATCH"].includes(requestSpec.method)) {
if (!requestSpec.is_generative && requestSpec.body_b64) {
const contentType = requestSpec.headers?.["content-type"] || "";
config.body = b64toBlob(requestSpec.body_b64, contentType);
Logger.output("Using binary body (Base64 decoded) for non-generative request");