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import os
from flask import Flask, request, jsonify, render_template_string, redirect, url_for, session, render_template
import config
import data_manager
import scheduler_jobs
import api_client
import requests

app = Flask(__name__)
app.secret_key = config.SECRET_KEY
app.permanent_session_lifetime = config.PERMANENT_SESSION_LIFETIME

LOGIN_FORM_HTML = """

<!DOCTYPE html>

<html lang="zh-CN">

<head>

    <meta charset="UTF-8">

    <meta name="viewport" content="width=device-width, initial-scale=1.0">

    <title>访问授权</title>

    <style>

        body {

            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

            display: flex;

            justify-content: center;

            align-items: center;

            height: 100vh;

            margin: 0;

            background-color: #fff;

            color: #000;

        }

        .login-container {

            background-color: #fff;

            padding: 40px;

            border-radius: 8px;

            box-shadow: 0 8px 30px rgba(0,0,0,0.1);

            width: 100%;

            max-width: 360px;

            border: 1px solid #eaeaea;

        }

        h2 {

            text-align: center;

            color: #000;

            font-weight: 600;

            margin-bottom: 30px;

        }

        label {

            display: block;

            margin-bottom: 8px;

            color: #444;

            font-size: 14px;

        }

        input[type="password"] {

            width: 100%;

            padding: 12px;

            margin-bottom: 20px;

            border: 1px solid #ccc;

            border-radius: 6px;

            box-sizing: border-box;

            background-color: #fff;

            color: #000;

            font-size: 16px;

        }

        input[type="password"]:focus {

            border-color: #999;

            outline: none;

            box-shadow: 0 0 0 2px rgba(0,0,0,0.05);

        }

        input[type="submit"] {

            width: 100%;

            padding: 12px;

            background-color: #000;

            color: #fff;

            border: none;

            border-radius: 6px;

            cursor: pointer;

            font-size: 16px;

            font-weight: 500;

            transition: background-color 0.2s ease;

        }

        input[type="submit"]:hover {

            background-color: #333;

        }

        .error {

            color: #e53e3e;

            text-align: center;

            margin-bottom: 15px;

            font-size: 14px;

        }

    </style>

</head>

<body>

    <div class="login-container">

        <h2>授权访问</h2>

        {% if error %}

            <p class="error">{{ error }}</p>

        {% endif %}

        <form method="post">

            <label for="password">访问密码:</label>

            <input type="password" id="password" name="password" required autofocus>

            <input type="submit" value="继续">

        </form>

    </div>

</body>

</html>

"""

@app.route('/', methods=['GET', 'POST'])
def login_frontend():
    if not config.FRONTEND_PASSWORD:
        return "错误: 前端密码 (PASSWORD 环境变量) 未设置。", 500
    
    if 'logged_in' in session and session['logged_in']:
        return redirect(url_for('dashboard'))

    error = None
    if request.method == 'POST':
        entered_password = request.form.get('password')
        if entered_password == config.FRONTEND_PASSWORD:
            accounts_list = data_manager.get_accounts_from_config()
            if not accounts_list:
                error = "配置错误:未找到账户信息。"
                return render_template_string(LOGIN_FORM_HTML, error=error)

            first_account_email = accounts_list[0]['email']
            first_account_password = accounts_list[0]['password']
            
            jwt_token, login_api_error = api_client.api_login(first_account_email, first_account_password)

            if login_api_error:
                error = f"API 登录失败: {login_api_error}"
                return render_template_string(LOGIN_FORM_HTML, error=error)
            
            if not jwt_token:
                error = "API 登录成功但未能获取 Token。"
                return render_template_string(LOGIN_FORM_HTML, error=error)

            session['logged_in'] = True
            session['jwt_token'] = jwt_token
            session.permanent = True
            return redirect(url_for('dashboard'))
        else:
            error = "密码错误!"
    return render_template_string(LOGIN_FORM_HTML, error=error)

@app.route('/dashboard')
def dashboard():
    if not ('logged_in' in session and session['logged_in']):
        return redirect(url_for('login_frontend'))
    return render_template_string(open('templates/dashboard.html', encoding='utf-8').read())

@app.route('/dashboard/statements')
def account_statements_page():
    if not ('logged_in' in session and session['logged_in']):
        return redirect(url_for('login_frontend'))
    
    account_email_param = request.args.get('email')
    if not account_email_param:
        return redirect(url_for('dashboard'))

    return render_template('account_statements.html', account_email=account_email_param)

@app.route('/logout')
def logout():
    session.pop('logged_in', None)
    return redirect(url_for('login_frontend'))

@app.route('/api/data', methods=['GET'])
def get_all_data():
    if not ('logged_in' in session and session['logged_in']):
        return jsonify({"error": "未授权访问"}), 401
    
    display_data = data_manager.get_accounts_data_for_display()
    return jsonify(display_data)

@app.route('/api/account_statements', methods=['GET'])
def get_account_statements():
    if not ('logged_in' in session and session['logged_in']):
        return jsonify({"error": "未授权访问"}), 401

    email_param = request.args.get('email')
    if not email_param:
        return jsonify({"error": "缺少 'email' 参数"}), 400

    page = request.args.get('page', 1, type=int)
    size = request.args.get('size', 10000, type=int)

    token_to_use = None
    target_account_password = None

    all_accounts = data_manager.get_accounts_from_config()
    for acc in all_accounts:
        if acc.get('email') == email_param:
            target_account_password = acc.get('password')
            break
    
    if not target_account_password:
        return jsonify({"error": f"未找到账户 {email_param} 的配置信息或密码。"}), 404

    print(f"为特定账户 {email_param} 获取账单,尝试重新登录获取专属 token...")
    specific_token, login_error = api_client.api_login(email_param, target_account_password)

    if login_error:
        print(f"为账户 {email_param} 获取专属 token 失败: {login_error}")
        return jsonify({"error": f"为账户 {email_param} 获取账单时登录失败: {login_error}"}), 500
    
    if not specific_token:
        return jsonify({"error": f"为账户 {email_param} 获取账单时未能获取专属 API token。"}), 500
        
    token_to_use = specific_token
    print(f"成功获取账户 {email_param} 的专属 token,将用于获取账单。")
            
    statement_data, error = api_client.get_statement_records(token_to_use, page, size)
    
    if error:
        return jsonify({"error": f"获取账户 {email_param} 的账单失败: {error}"}), 500
    
    return jsonify(statement_data)

@app.route('/api/account_summary_statistics', methods=['GET'])
def get_account_summary_statistics():
    if not ('logged_in' in session and session['logged_in']):
        return jsonify({"error": "未授权访问"}), 401

    email_param = request.args.get('email')
    if not email_param:
        return jsonify({"error": "缺少 'email' 参数"}), 400

    target_account_password = None
    all_accounts = data_manager.get_accounts_from_config()
    for acc in all_accounts:
        if acc.get('email') == email_param:
            target_account_password = acc.get('password')
            break
    
    if not target_account_password:
        return jsonify({"error": f"未找到账户 {email_param} 的配置信息或密码。"}), 404

    print(f"为特定账户 {email_param} 获取统计摘要,尝试重新登录获取专属 token...")
    specific_token, login_error = api_client.api_login(email_param, target_account_password)

    if login_error:
        print(f"为账户 {email_param} 获取专属 token 失败: {login_error}")
        return jsonify({"error": f"为账户 {email_param} 获取统计摘要时登录失败: {login_error}"}), 500
    
    if not specific_token:
        return jsonify({"error": f"为账户 {email_param} 获取统计摘要时未能获取专属 API token。"}), 500
        
    token_to_use = specific_token
    print(f"成功获取账户 {email_param} 的专属 token,将用于获取统计摘要。")

    external_api_url = "https://api-card.infini.money/user/statement/statistics"
    headers = {
        "Authorization": f"Bearer {token_to_use}",
        "User-Agent": "InfiniDashboard/1.0"
    }

    try:
        response = requests.get(external_api_url, headers=headers, timeout=10)
        response.raise_for_status()
        
        api_response_data = response.json()
        
        return jsonify(api_response_data)

    except requests.exceptions.HTTPError as http_err:
        print(f"HTTP error occurred while fetching statistics for {email_param}: {http_err}")
        try:
            error_content = http_err.response.json()
            return jsonify({"error": f"获取统计摘要失败 (API错误): {error_content.get('message', str(http_err))}", "details": error_content}), http_err.response.status_code
        except:
            return jsonify({"error": f"获取统计摘要失败: {str(http_err)}"}), getattr(http_err.response, 'status_code', 500)
    except requests.exceptions.RequestException as req_err:
        print(f"Request error occurred while fetching statistics for {email_param}: {req_err}")
        return jsonify({"error": f"获取统计摘要时发生网络请求错误: {str(req_err)}"}), 503
    except Exception as e:
        print(f"An unexpected error occurred while fetching statistics for {email_param}: {e}")
        return jsonify({"error": f"获取统计摘要时发生未知错误: {str(e)}"}), 500


@app.route('/api/refresh', methods=['POST'])
def manual_refresh_all_data():
    if not ('logged_in' in session and session['logged_in']):
        return jsonify({"error": "未授权访问"}), 401

    scheduler_jobs.manual_refresh_all_data_job()
    return jsonify({"message": "刷新任务已启动,请稍后查看数据。"}), 202

if __name__ == '__main__':
    if not config.FRONTEND_PASSWORD:
        print("警告: PASSWORD 环境变量未设置,前端将无法登录。程序将尝试继续,但部分功能可能受限。")

    if scheduler_jobs.initialize_scheduler(is_gunicorn=False):
        is_hf_space = os.getenv("SPACE_ID") is not None
        if not is_hf_space:
            print("在本地环境运行 Flask 开发服务器...")
            app.run(host='0.0.0.0', port=int(os.getenv("PORT", 7860)), debug=False)
        else:
            print("检测到在 Hugging Face Space 环境中运行。假定由 Gunicorn 等 WSGI 服务器启动。")
    else:
        print("定时任务初始化失败,程序退出。")


else:
    print("在 Gunicorn 环境下初始化应用...")
    if not config.FRONTEND_PASSWORD:
        print("Gunicorn警告: PASSWORD 环境变量未设置,前端将无法登录。")
    
    if not scheduler_jobs.initialize_scheduler(is_gunicorn=True):
        print("Gunicorn: 定时任务初始化失败。")