abacus_chat_proxy

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from flask import Flask, request, jsonify, Response, render_template_string
import requests
import time
import json
import uuid
import random
import io
import re
from functools import wraps
import hashlib
import jwt  
import os
import threading
from datetime import datetime

app = Flask(__name__)


API_ENDPOINT_URL = "https://abacus.ai/api/v0/describeDeployment"
MODEL_LIST_URL = "https://abacus.ai/api/v0/listExternalApplications"
CHAT_URL = "https://apps.abacus.ai/api/_chatLLMSendMessageSSE"
USER_INFO_URL = "https://abacus.ai/api/v0/_getUserInfo"


USER_AGENTS = [
    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36"
]


PASSWORD = None
USER_NUM = 0
USER_DATA = []
CURRENT_USER = -1
MODELS = set()


TRACE_ID = "3042e28b3abf475d8d973c7e904935af"
SENTRY_TRACE = f"{TRACE_ID}-80d9d2538b2682d0"


# 添加一个计数器记录健康检查次数
health_check_counter = 0


# HTML模板
INDEX_HTML = """
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Abacus Chat Proxy</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background: #f5f5f5;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 2rem;
        }
        .container {
            max-width: 800px;
            width: 100%;
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        }
        h1 {
            color: #2c3e50;
            margin-bottom: 1rem;
            text-align: center;
            font-size: 2.5rem;
        }
        .status-card {
            background: #f8f9fa;
            border-radius: 8px;
            padding: 1.5rem;
            margin: 1.5rem 0;
        }
        .status-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0.5rem 0;
            border-bottom: 1px solid #dee2e6;
        }
        .status-item:last-child {
            border-bottom: none;
        }
        .status-label {
            color: #6c757d;
            font-weight: 500;
        }
        .status-value {
            color: #28a745;
            font-weight: 600;
        }
        .status-value.warning {
            color: #ffc107;
        }
        .footer {
            margin-top: 2rem;
            text-align: center;
            color: #6c757d;
        }
        .models-list {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-top: 0.5rem;
        }
        .model-tag {
            background: #e9ecef;
            padding: 0.25rem 0.75rem;
            border-radius: 16px;
            font-size: 0.875rem;
            color: #495057;
        }
        .endpoints {
            margin-top: 2rem;
        }
        .endpoint-item {
            background: #f8f9fa;
            padding: 1rem;
            border-radius: 8px;
            margin-bottom: 1rem;
        }
        .endpoint-url {
            font-family: monospace;
            background: #e9ecef;
            padding: 0.25rem 0.5rem;
            border-radius: 4px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 1rem;
            }
            h1 {
                font-size: 2rem;
            }
        }
    </style>
</head>
<body>
    <div class="container">
        <h1>🤖 Abacus Chat Proxy</h1>
        
        <div class="status-card">
            <div class="status-item">
                <span class="status-label">服务状态</span>
                <span class="status-value">运行中</span>
            </div>
            <div class="status-item">
                <span class="status-label">运行时间</span>
                <span class="status-value">{{ uptime }}</span>
            </div>
            <div class="status-item">
                <span class="status-label">健康检查次数</span>
                <span class="status-value">{{ health_checks }}</span>
            </div>
            <div class="status-item">
                <span class="status-label">已配置用户数</span>
                <span class="status-value">{{ user_count }}</span>
            </div>
            <div class="status-item">
                <span class="status-label">可用模型</span>
                <div class="models-list">
                    {% for model in models %}
                    <span class="model-tag">{{ model }}</span>
                    {% endfor %}
                </div>
            </div>
        </div>

        <div class="endpoints">
            <h2>API端点</h2>
            <div class="endpoint-item">
                <p>获取模型列表：</p>
                <code class="endpoint-url">GET /v1/models</code>
            </div>
            <div class="endpoint-item">
                <p>聊天补全：</p>
                <code class="endpoint-url">POST /v1/chat/completions</code>
            </div>
            <div class="endpoint-item">
                <p>健康检查：</p>
                <code class="endpoint-url">GET /health</code>
            </div>
        </div>

        <div class="footer">
            <p>© {{ year }} Abacus Chat Proxy. 保持简单，保持可靠。</p>
        </div>
    </div>
</body>
</html>
"""

# 记录启动时间
START_TIME = datetime.now()


def resolve_config():
    # 从环境变量读取多组配置
    config_list = []
    i = 1
    while True:
        covid = os.environ.get(f"covid_{i}")
        cookie = os.environ.get(f"cookie_{i}")
        if not (covid and cookie):
            break
        config_list.append({
            "conversation_id": covid,
            "cookies": cookie
        })
        i += 1
    
    # 如果环境变量存在配置，使用环境变量的配置
    if config_list:
        return config_list
    
    # 如果环境变量不存在，从文件读取
    try:
        with open("config.json", "r") as f:
            config = json.load(f)
        config_list = config.get("config")
        return config_list
    except FileNotFoundError:
        print("未找到config.json文件")
        return []
    except json.JSONDecodeError:
        print("config.json格式错误")
        return []


def get_password():
    global PASSWORD
    # 从环境变量读取密码
    env_password = os.environ.get("password")
    if env_password:
        PASSWORD = hashlib.sha256(env_password.encode()).hexdigest()
        return

    # 如果环境变量不存在，从文件读取
    try:
        with open("password.txt", "r") as f:
            PASSWORD = f.read().strip()
    except FileNotFoundError:
        with open("password.txt", "w") as f:
            PASSWORD = None


def require_auth(f):
    @wraps(f)
    def decorated(*args, **kwargs):
        if not PASSWORD:
            return f(*args, **kwargs)
        auth = request.authorization
        if not auth or not check_auth(auth.token):
            return jsonify({"error": "Unauthorized access"}), 401
        return f(*args, **kwargs)

    return decorated


def check_auth(token):
    return hashlib.sha256(token.encode()).hexdigest() == PASSWORD


def is_token_expired(token):
    if not token:
        return True
    
    try:
        # Malkodi tokenon sen validigo de subskribo
        payload = jwt.decode(token, options={"verify_signature": False})
        # Akiru eksvalidiĝan tempon, konsideru eksvalidiĝinta 5 minutojn antaŭe
        return payload.get('exp', 0) - time.time() < 300
    except:
        return True


def refresh_token(session, cookies):
    """Uzu kuketon por refreŝigi session token, nur revenigu novan tokenon"""
    headers = {
        "accept": "application/json, text/plain, */*",
        "accept-language": "zh-CN,zh;q=0.9",
        "content-type": "application/json",
        "reai-ui": "1",
        "sec-ch-ua": "\"Chromium\";v=\"116\", \"Not)A;Brand\";v=\"24\", \"Google Chrome\";v=\"116\"",
        "sec-ch-ua-mobile": "?0",
        "sec-ch-ua-platform": "\"Windows\"",
        "sec-fetch-dest": "empty",
        "sec-fetch-mode": "cors",
        "sec-fetch-site": "same-site",
        "x-abacus-org-host": "apps",
        "user-agent": random.choice(USER_AGENTS),
        "origin": "https://apps.abacus.ai",
        "referer": "https://apps.abacus.ai/",
        "cookie": cookies
    }
    
    try:
        response = session.post(
            USER_INFO_URL,
            headers=headers,
            json={},
            cookies=None
        )
        
        if response.status_code == 200:
            response_data = response.json()
            if response_data.get('success') and 'sessionToken' in response_data.get('result', {}):
                return response_data['result']['sessionToken']
            else:
                print(f"刷新token失败: {response_data.get('error', '未知错误')}")
                return None
        else:
            print(f"刷新token失败，状态码: {response.status_code}")
            return None
    except Exception as e:
        print(f"刷新token异常: {e}")
        return None


def get_model_map(session, cookies, session_token):
    """Akiru disponeblan modelan liston kaj ĝiajn mapajn rilatojn"""
    headers = {
        "accept": "application/json, text/plain, */*",
        "accept-language": "zh-CN,zh;q=0.9",
        "content-type": "application/json",
        "reai-ui": "1",
        "sec-ch-ua": "\"Chromium\";v=\"116\", \"Not)A;Brand\";v=\"24\", \"Google Chrome\";v=\"116\"",
        "sec-ch-ua-mobile": "?0",
        "sec-ch-ua-platform": "\"Windows\"",
        "sec-fetch-dest": "empty",
        "sec-fetch-mode": "cors",
        "sec-fetch-site": "same-site",
        "x-abacus-org-host": "apps",
        "user-agent": random.choice(USER_AGENTS),
        "origin": "https://apps.abacus.ai",
        "referer": "https://apps.abacus.ai/",
        "cookie": cookies
    }
    
    if session_token:
        headers["session-token"] = session_token
    
    model_map = {}
    models_set = set()
    
    try:
        response = session.post(
            MODEL_LIST_URL,
            headers=headers,
            json={},
            cookies=None
        )
        
        if response.status_code != 200:
            print(f"获取模型列表失败，状态码: {response.status_code}")
            raise Exception("API请求失败")
        
        data = response.json()
        if not data.get('success'):
            print(f"获取模型列表失败: {data.get('error', '未知错误')}")
            raise Exception("API返回错误")
        
        applications = []
        if isinstance(data.get('result'), dict):
            applications = data.get('result', {}).get('externalApplications', [])
        elif isinstance(data.get('result'), list):
            applications = data.get('result', [])
        
        for app in applications:
            app_name = app.get('name', '')
            app_id = app.get('externalApplicationId', '')
            prediction_overrides = app.get('predictionOverrides', {})
            llm_name = prediction_overrides.get('llmName', '') if prediction_overrides else ''
            
            if not (app_name and app_id and llm_name):
                continue
                
            model_name = app_name
            model_map[model_name] = (app_id, llm_name)
            models_set.add(model_name)
        
        if not model_map:
            raise Exception("未找到任何可用模型")
        
        return model_map, models_set
    
    except Exception as e:
        print(f"获取模型列表异常: {e}")
        raise


def init_session():
    get_password()
    global USER_NUM, MODELS, USER_DATA
    config_list = resolve_config()
    user_num = len(config_list)
    all_models = set()
    
    for i in range(user_num):
        user = config_list[i]
        cookies = user.get("cookies")
        conversation_id = user.get("conversation_id")
        session = requests.Session()
        
        session_token = refresh_token(session, cookies)
        if not session_token:
            print(f"无法获取cookie {i+1}的token")
            continue
        
        try:
            model_map, models_set = get_model_map(session, cookies, session_token)
            all_models.update(models_set)
            USER_DATA.append((session, cookies, session_token, conversation_id, model_map))
        except Exception as e:
            print(f"配置用户 {i+1} 失败: {e}")
            continue
    
    USER_NUM = len(USER_DATA)
    if USER_NUM == 0:
        print("No user available, exiting...")
        exit(1)
    
    MODELS = all_models
    print(f"启动完成，共配置 {USER_NUM} 个用户")


def update_cookie(session, cookies):
    cookie_jar = {}
    for key, value in session.cookies.items():
        cookie_jar[key] = value
    cookie_dict = {}
    for item in cookies.split(";"):
        key, value = item.strip().split("=", 1)
        cookie_dict[key] = value
    cookie_dict.update(cookie_jar)
    cookies = "; ".join([f"{key}={value}" for key, value in cookie_dict.items()])
    return cookies


user_data = init_session()


@app.route("/v1/models", methods=["GET"])
@require_auth
def get_models():
    if len(MODELS) == 0:
        return jsonify({"error": "No models available"}), 500
    model_list = []
    for model in MODELS:
        model_list.append(
            {
                "id": model,
                "object": "model",
                "created": int(time.time()),
                "owned_by": "Elbert",
                "name": model,
            }
        )
    return jsonify({"object": "list", "data": model_list})


@app.route("/v1/chat/completions", methods=["POST"])
@require_auth
def chat_completions():
    openai_request = request.get_json()
    stream = openai_request.get("stream", False)
    messages = openai_request.get("messages")
    if messages is None:
        return jsonify({"error": "Messages is required", "status": 400}), 400
    model = openai_request.get("model")
    if model not in MODELS:
        return (
            jsonify(
                {
                    "error": "Model not available, check if it is configured properly",
                    "status": 404,
                }
            ),
            404,
        )
    message = format_message(messages)
    think = (
        openai_request.get("think", False) if model == "Claude Sonnet 3.7" else False
    )
    return (
        send_message(message, model, think)
        if stream
        else send_message_non_stream(message, model, think)
    )


def get_user_data():
    global CURRENT_USER
    CURRENT_USER = (CURRENT_USER + 1) % USER_NUM
    print(f"使用配置 {CURRENT_USER+1}")
    
    # Akiru uzantajn datumojn
    session, cookies, session_token, conversation_id, model_map = USER_DATA[CURRENT_USER]
    
    # Kontrolu ĉu la tokeno eksvalidiĝis, se jes, refreŝigu ĝin
    if is_token_expired(session_token):
        print(f"Cookie {CURRENT_USER+1}的token已过期或即将过期，正在刷新...")
        new_token = refresh_token(session, cookies)
        if new_token:
            # Ĝisdatigu la globale konservitan tokenon
            USER_DATA[CURRENT_USER] = (session, cookies, new_token, conversation_id, model_map)
            session_token = new_token
            print(f"成功更新token: {session_token[:15]}...{session_token[-15:]}")
        else:
            print(f"警告：无法刷新Cookie {CURRENT_USER+1}的token，继续使用当前token")
    
    return (session, cookies, session_token, conversation_id, model_map)


def generate_trace_id():
    """Generu novan trace_id kaj sentry_trace"""
    trace_id = str(uuid.uuid4()).replace('-', '')
    sentry_trace = f"{trace_id}-{str(uuid.uuid4())[:16]}"
    return trace_id, sentry_trace


def send_message(message, model, think=False):
    """Flua traktado kaj plusendo de mesaĝoj"""
    (session, cookies, session_token, conversation_id, model_map) = get_user_data()
    trace_id, sentry_trace = generate_trace_id()
    
    headers = {
        "accept": "text/event-stream",
        "accept-language": "zh-CN,zh;q=0.9",
        "baggage": f"sentry-environment=production,sentry-release=975eec6685013679c139fc88db2c48e123d5c604,sentry-public_key=3476ea6df1585dd10e92cdae3a66ff49,sentry-trace_id={trace_id}",
        "content-type": "text/plain;charset=UTF-8",
        "cookie": cookies,
        "sec-ch-ua": "\"Chromium\";v=\"116\", \"Not)A;Brand\";v=\"24\", \"Google Chrome\";v=\"116\"",
        "sec-ch-ua-mobile": "?0",
        "sec-ch-ua-platform": "\"Windows\"",
        "sec-fetch-dest": "empty",
        "sec-fetch-mode": "cors",
        "sec-fetch-site": "same-origin",
        "sentry-trace": sentry_trace,
        "user-agent": random.choice(USER_AGENTS)
    }
    
    if session_token:
        headers["session-token"] = session_token
    
    payload = {
        "requestId": str(uuid.uuid4()),
        "deploymentConversationId": conversation_id,
        "message": message,
        "isDesktop": False,
        "chatConfig": {
            "timezone": "Asia/Shanghai",
            "language": "zh-CN"
        },
        "llmName": model_map[model][1],
        "externalApplicationId": model_map[model][0],
        "regenerate": True,
        "editPrompt": True
    }
    
    if think:
        payload["useThinking"] = think
    
    try:
        response = session.post(
            CHAT_URL,
            headers=headers,
            data=json.dumps(payload),
            stream=True
        )
        
        response.raise_for_status()
        
        def extract_segment(line_data):
            try:
                data = json.loads(line_data)
                if "segment" in data:
                    if isinstance(data["segment"], str):
                        return data["segment"]
                    elif isinstance(data["segment"], dict) and "segment" in data["segment"]:
                        return data["segment"]["segment"]
                return ""
            except:
                return ""
        
        def generate():
            id = ""
            think_state = 2
            
            yield "data: " + json.dumps({"object": "chat.completion.chunk", "choices": [{"delta": {"role": "assistant"}}]}) + "\n\n"
            
            for line in response.iter_lines():
                if line:
                    decoded_line = line.decode("utf-8")
                    try:
                        if think:
                            data = json.loads(decoded_line)
                            if data.get("type") != "text":
                                continue
                            elif think_state == 2:
                                id = data.get("messageId")
                                segment = "<think>\n" + data.get("segment", "")
                                yield f"data: {json.dumps({'object': 'chat.completion.chunk', 'choices': [{'delta': {'content': segment}}]})}\n\n"
                                think_state = 1
                            elif think_state == 1:
                                if data.get("messageId") != id:
                                    segment = data.get("segment", "")
                                    yield f"data: {json.dumps({'object': 'chat.completion.chunk', 'choices': [{'delta': {'content': segment}}]})}\n\n"
                                else:
                                    segment = "\n</think>\n" + data.get("segment", "")
                                    yield f"data: {json.dumps({'object': 'chat.completion.chunk', 'choices': [{'delta': {'content': segment}}]})}\n\n"
                                    think_state = 0
                            else:
                                segment = data.get("segment", "")
                                yield f"data: {json.dumps({'object': 'chat.completion.chunk', 'choices': [{'delta': {'content': segment}}]})}\n\n"
                        else:
                            segment = extract_segment(decoded_line)
                            if segment:
                                yield f"data: {json.dumps({'object': 'chat.completion.chunk', 'choices': [{'delta': {'content': segment}}]})}\n\n"
                    except Exception as e:
                        print(f"处理响应出错: {e}")
            
            yield "data: " + json.dumps({"object": "chat.completion.chunk", "choices": [{"delta": {}, "finish_reason": "stop"}]}) + "\n\n"
            yield "data: [DONE]\n\n"
        
        return Response(generate(), mimetype="text/event-stream")
    except requests.exceptions.RequestException as e:
        error_details = str(e)
        if hasattr(e, 'response') and e.response is not None:
            if hasattr(e.response, 'text'):
                error_details += f" - Response: {e.response.text[:200]}"
        print(f"发送消息失败: {error_details}")
        return jsonify({"error": f"Failed to send message: {error_details}"}), 500


def send_message_non_stream(message, model, think=False):
    """Ne-flua traktado de mesaĝoj"""
    (session, cookies, session_token, conversation_id, model_map) = get_user_data()
    trace_id, sentry_trace = generate_trace_id()
    
    headers = {
        "accept": "text/event-stream",
        "accept-language": "zh-CN,zh;q=0.9",
        "baggage": f"sentry-environment=production,sentry-release=975eec6685013679c139fc88db2c48e123d5c604,sentry-public_key=3476ea6df1585dd10e92cdae3a66ff49,sentry-trace_id={trace_id}",
        "content-type": "text/plain;charset=UTF-8",
        "cookie": cookies,
        "sec-ch-ua": "\"Chromium\";v=\"116\", \"Not)A;Brand\";v=\"24\", \"Google Chrome\";v=\"116\"",
        "sec-ch-ua-mobile": "?0",
        "sec-ch-ua-platform": "\"Windows\"",
        "sec-fetch-dest": "empty",
        "sec-fetch-mode": "cors",
        "sec-fetch-site": "same-origin",
        "sentry-trace": sentry_trace,
        "user-agent": random.choice(USER_AGENTS)
    }
    
    if session_token:
        headers["session-token"] = session_token
    
    payload = {
        "requestId": str(uuid.uuid4()),
        "deploymentConversationId": conversation_id,
        "message": message,
        "isDesktop": False,
        "chatConfig": {
            "timezone": "Asia/Shanghai",
            "language": "zh-CN"
        },
        "llmName": model_map[model][1],
        "externalApplicationId": model_map[model][0],
        "regenerate": True,
        "editPrompt": True
    }
    
    if think:
        payload["useThinking"] = think
    
    try:
        response = session.post(
            CHAT_URL,
            headers=headers,
            data=json.dumps(payload),
            stream=True
        )
        
        response.raise_for_status()
        buffer = io.StringIO()
        
        def extract_segment(line_data):
            try:
                data = json.loads(line_data)
                if "segment" in data:
                    if isinstance(data["segment"], str):
                        return data["segment"]
                    elif isinstance(data["segment"], dict) and "segment" in data["segment"]:
                        return data["segment"]["segment"]
                return ""
            except:
                return ""
        
        if think:
            id = ""
            think_state = 2
            for line in response.iter_lines():
                if line:
                    decoded_line = line.decode("utf-8")
                    try:
                        data = json.loads(decoded_line)
                        if data.get("type") != "text":
                            continue
                        elif think_state == 2:
                            id = data.get("messageId")
                            segment = "<think>\n" + data.get("segment", "")
                            buffer.write(segment)
                            think_state = 1
                        elif think_state == 1:
                            if data.get("messageId") != id:
                                segment = data.get("segment", "")
                                buffer.write(segment)
                            else:
                                segment = "\n</think>\n" + data.get("segment", "")
                                buffer.write(segment)
                                think_state = 0
                        else:
                            segment = data.get("segment", "")
                            buffer.write(segment)
                    except json.JSONDecodeError as e:
                        print(f"解析响应出错: {e}")
        else:
            for line in response.iter_lines():
                if line:
                    decoded_line = line.decode("utf-8")
                    try:
                        segment = extract_segment(decoded_line)
                        if segment:
                            buffer.write(segment)
                    except Exception as e:
                        print(f"处理响应出错: {e}")
        
        openai_response = {
            "id": "chatcmpl-" + str(uuid.uuid4()),
            "object": "chat.completion",
            "created": int(time.time()),
            "model": model,
            "choices": [
                {
                    "index": 0,
                    "message": {"role": "assistant", "content": buffer.getvalue()},
                    "finish_reason": "completed",
                }
            ],
        }
        return jsonify(openai_response)
    except Exception as e:
        error_details = str(e)
        if isinstance(e, requests.exceptions.RequestException) and e.response is not None:
            error_details += f" - Response: {e.response.text[:200]}"
        print(f"发送消息失败: {error_details}")
        return jsonify({"error": f"Failed to send message: {error_details}"}), 500


def format_message(messages):
    buffer = io.StringIO()
    role_map, prefix, messages = extract_role(messages)
    for message in messages:
        role = message.get("role")
        role = "\b" + role_map[role] if prefix else role_map[role]
        content = message.get("content").replace("\\n", "\n")
        pattern = re.compile(r"<\|removeRole\|>\n")
        if pattern.match(content):
            content = pattern.sub("", content)
            buffer.write(f"{content}\n")
        else:
            buffer.write(f"{role}: {content}\n\n")
    formatted_message = buffer.getvalue()
    with open("message_log.txt", "w", encoding="utf-8") as f:
        f.write(formatted_message)
    return formatted_message


def extract_role(messages):
    role_map = {"user": "Human", "assistant": "Assistant", "system": "System"}
    prefix = False
    first_message = messages[0]["content"]
    pattern = re.compile(
        r"""
        <roleInfo>\s*
        user:\s*(?P<user>[^\n]*)\s*
        assistant:\s*(?P<assistant>[^\n]*)\s*
        system:\s*(?P<system>[^\n]*)\s*
        prefix:\s*(?P<prefix>[^\n]*)\s*
        </roleInfo>\n
    """,
        re.VERBOSE,
    )
    match = pattern.search(first_message)
    if match:
        role_map = {
            "user": match.group("user"),
            "assistant": match.group("assistant"),
            "system": match.group("system"),
        }
        prefix = match.group("prefix") == "1"
        messages[0]["content"] = pattern.sub("", first_message)
        print(f"Extracted role map:")
        print(
            f"User: {role_map['user']}, Assistant: {role_map['assistant']}, System: {role_map['system']}"
        )
        print(f"Using prefix: {prefix}")
    return (role_map, prefix, messages)


@app.route("/health", methods=["GET"])
def health_check():
    global health_check_counter
    health_check_counter += 1
    return jsonify({
        "status": "healthy",
        "timestamp": datetime.now().isoformat(),
        "checks": health_check_counter
    })


def keep_alive():
    """每20分钟进行一次自我健康检查"""
    while True:
        try:
            requests.get("http://127.0.0.1:7860/health")
            time.sleep(1200)  # 20分钟
        except:
            pass  # 忽略错误，保持运行


@app.route("/", methods=["GET"])
def index():
    uptime = datetime.now() - START_TIME
    days = uptime.days
    hours, remainder = divmod(uptime.seconds, 3600)
    minutes, seconds = divmod(remainder, 60)
    
    if days > 0:
        uptime_str = f"{days}天 {hours}小时 {minutes}分钟"
    elif hours > 0:
        uptime_str = f"{hours}小时 {minutes}分钟"
    else:
        uptime_str = f"{minutes}分钟 {seconds}秒"

    return render_template_string(
        INDEX_HTML,
        uptime=uptime_str,
        health_checks=health_check_counter,
        user_count=USER_NUM,
        models=sorted(list(MODELS)),
        year=datetime.now().year
    )


if __name__ == "__main__":
    # 启动保活线程
    threading.Thread(target=keep_alive, daemon=True).start()
    port = int(os.environ.get("PORT", 9876))
    app.run(port=port, host="0.0.0.0")