feat: 备用大模型接口管理功能

- 新增 BackupLLMConfig 数据模型存储备用大模型配置
- 支持手动新增、编辑、删除备用大模型接口
- 支持测试连接功能
- 大模型配置页面静态表格改为动态管理的备用接口链接
- 默认初始化5个常用大模型服务商配置

admin.py

@@ -10,7 +10,7 @@ import json
 
 from models import (db, User, Translation, TranslationCache, GuestTranslation, 
                    SystemConfig, OperationLog, DataPackage, UserPackage, DynamicConfig,
-                   UserTypeConfig, MembershipPlanConfig)
+                   UserTypeConfig, MembershipPlanConfig, BackupLLMConfig)
 from config import USER_LIMITS, MEMBERSHIP_PLANS
 
 admin_bp = Blueprint('admin', __name__, url_prefix='/admin')
@@ -1217,4 +1217,206 @@ def get_membership_plan(plan_key):
 def get_all_membership_plans():
     """获取所有会员套餐配置"""
     plans = MembershipPlanConfig.query.filter_by(is_active=True).order_by(MembershipPlanConfig.sort_order).all()
-    return [p.to_dict() for p in plans]
+    return [p.to_dict() for p in plans]
+
+
+# ==================== 备用大模型接口管理 ====================
+@admin_bp.route('/backup-llm')
+@admin_required
+def backup_llm_list():
+    """备用大模型接口列表"""
+    configs = BackupLLMConfig.query.order_by(BackupLLMConfig.sort_order).all()
+    
+    # 如果数据库中没有数据，初始化默认配置
+    if not configs:
+        init_default_backup_llm()
+        configs = BackupLLMConfig.query.order_by(BackupLLMConfig.sort_order).all()
+    
+    return render_template('admin/backup_llm.html', configs=configs)
+
+
+@admin_bp.route('/backup-llm/add', methods=['GET', 'POST'])
+@admin_required
+def add_backup_llm():
+    """添加备用大模型接口"""
+    if request.method == 'POST':
+        data = request.json if request.is_json else request.form
+        
+        config = BackupLLMConfig(
+            provider_name=data.get('provider_name'),
+            api_base=data.get('api_base'),
+            api_key=data.get('api_key'),
+            model=data.get('model'),
+            is_active=data.get('is_active', True) if isinstance(data.get('is_active'), bool) else data.get('is_active') == 'true',
+            sort_order=int(data.get('sort_order', 0)),
+            description=data.get('description'),
+        )
+        
+        db.session.add(config)
+        db.session.commit()
+        
+        # 记录日志
+        log = OperationLog(
+            user_id=session.get('user_id'),
+            username='admin',
+            action='add_backup_llm',
+            target=config.provider_name,
+            detail=json.dumps(config.to_dict(), ensure_ascii=False)
+        )
+        db.session.add(log)
+        db.session.commit()
+        
+        if request.is_json:
+            return jsonify({'success': True, 'config': config.to_dict()})
+        flash('备用大模型接口已添加', 'success')
+        return redirect(url_for('admin.backup_llm_list'))
+    
+    return render_template('admin/backup_llm_form.html', config=None)
+
+
+@admin_bp.route('/backup-llm/<int:config_id>/edit', methods=['GET', 'POST'])
+@admin_required
+def edit_backup_llm(config_id):
+    """编辑备用大模型接口"""
+    config = BackupLLMConfig.query.get_or_404(config_id)
+    
+    if request.method == 'POST':
+        data = request.json if request.is_json else request.form
+        
+        config.provider_name = data.get('provider_name', config.provider_name)
+        config.api_base = data.get('api_base', config.api_base)
+        config.api_key = data.get('api_key', config.api_key)
+        config.model = data.get('model', config.model)
+        config.is_active = data.get('is_active', True) if isinstance(data.get('is_active'), bool) else data.get('is_active') == 'true'
+        config.sort_order = int(data.get('sort_order', config.sort_order))
+        config.description = data.get('description', config.description)
+        
+        db.session.commit()
+        
+        # 记录日志
+        log = OperationLog(
+            user_id=session.get('user_id'),
+            username='admin',
+            action='edit_backup_llm',
+            target=config.provider_name,
+            detail=json.dumps(config.to_dict(), ensure_ascii=False)
+        )
+        db.session.add(log)
+        db.session.commit()
+        
+        if request.is_json:
+            return jsonify({'success': True, 'config': config.to_dict()})
+        flash('备用大模型接口已更新', 'success')
+        return redirect(url_for('admin.backup_llm_list'))
+    
+    return render_template('admin/backup_llm_form.html', config=config)
+
+
+@admin_bp.route('/backup-llm/<int:config_id>/delete', methods=['POST'])
+@admin_required
+def delete_backup_llm(config_id):
+    """删除备用大模型接口"""
+    config = BackupLLMConfig.query.get_or_404(config_id)
+    
+    provider_name = config.provider_name
+    db.session.delete(config)
+    db.session.commit()
+    
+    # 记录日志
+    log = OperationLog(
+        user_id=session.get('user_id'),
+        username='admin',
+        action='delete_backup_llm',
+        target=provider_name
+    )
+    db.session.add(log)
+    db.session.commit()
+    
+    return jsonify({'success': True})
+
+
+@admin_bp.route('/backup-llm/<int:config_id>/toggle', methods=['POST'])
+@admin_required
+def toggle_backup_llm(config_id):
+    """切换备用大模型接口状态"""
+    config = BackupLLMConfig.query.get_or_404(config_id)
+    config.is_active = not config.is_active
+    db.session.commit()
+    
+    return jsonify({'success': True, 'is_active': config.is_active})
+
+
+@admin_bp.route('/backup-llm/<int:config_id>/test', methods=['POST'])
+@admin_required
+def test_backup_llm(config_id):
+    """测试备用大模型接口"""
+    config = BackupLLMConfig.query.get_or_404(config_id)
+    
+    try:
+        from openai import OpenAI
+        
+        client = OpenAI(
+            api_key=config.api_key or 'sk-test',
+            base_url=config.api_base,
+        )
+        
+        model = config.model or 'default'
+        
+        # 发送简单测试请求
+        response = client.chat.completions.create(
+            model=model,
+            messages=[{"role": "user", "content": "Hello"}],
+            max_tokens=10,
+            timeout=10,
+        )
+        
+        return jsonify({
+            'success': True,
+            'provider': config.provider_name,
+            'model': model,
+            'response': response.choices[0].message.content[:50] if response.choices else 'OK'
+        })
+        
+    except Exception as e:
+        return jsonify({'success': False, 'error': str(e)})
+
+
+@admin_bp.route('/backup-llm/init', methods=['POST'])
+@admin_required
+def init_backup_llm():
+    """初始化默认备用大模型"""
+    init_default_backup_llm()
+    return jsonify({'success': True})
+
+
+def init_default_backup_llm():
+    """初始化默认备用大模型接口配置"""
+    defaults = [
+        ('本地LM Studio', 'http://localhost:1234/v1', None, None, 0),
+        ('OpenAI', 'https://api.openai.com/v1', None, 'gpt-4', 1),
+        ('DeepSeek', 'https://api.deepseek.com/v1', None, 'deepseek-chat', 2),
+        ('阿里百炼', 'https://dashscope.aliyuncs.com/compatible-mode/v1', None, 'qwen-turbo', 3),
+        ('SiliconFlow', 'https://api.siliconflow.cn/v1', None, 'Qwen/Qwen2.5-72B-Instruct', 4),
+    ]
+    
+    for provider_name, api_base, api_key, model, sort_order in defaults:
+        existing = BackupLLMConfig.query.filter_by(provider_name=provider_name).first()
+        if not existing:
+            config = BackupLLMConfig(
+                provider_name=provider_name,
+                api_base=api_base,
+                api_key=api_key,
+                model=model,
+                is_active=True,
+                sort_order=sort_order,
+                description=f'{provider_name} 默认接口',
+            )
+            db.session.add(config)
+    
+    db.session.commit()
+
+
+def get_backup_llm_configs():
+    """获取所有备用大模型配置（供其他模块使用）"""
+    configs = BackupLLMConfig.query.filter_by(is_active=True).order_by(BackupLLMConfig.sort_order).all()
+    return [c.to_dict() for c in configs]

app.py

@@ -15,7 +15,9 @@ from werkzeug.utils import secure_filename
 from config import *
 from models import (db, User, Translation, TranslationCache, GuestTranslation, 
                    DataPackage, UserPackage, DynamicConfig, UserRecharge, UserRefund,
-                   MembershipPurchase, AccountTransaction, MembershipPlanConfig, UserTypeConfig)
+                   MembershipPurchase, AccountTransaction, MembershipPlanConfig, UserTypeConfig,
+                   UserInvitation, InviteRewardConfig, EmailNotification, EmailTemplateConfig)
+from email_service import email_service
 from services import TranslationService, CacheService, TranslationTask
 from admin import admin_bp
 
@@ -221,6 +223,8 @@ def pricing():
         'priority_queue': '优先处理队列',
         'custom_instruction': '自定义翻译要求',
         'api_access': 'API接口调用',
+        'email_notify': '邮件通知',
+        'email_attachment': '邮件附件发送',
     }
     
     # 从数据库读取动态配置的会员套餐
@@ -287,10 +291,15 @@ def profile():
     daily_remaining = limits['daily_translations'] - user.daily_count if limits['daily_translations'] > 0 else '无限'
     max_pages = limits['max_pages'] if limits['max_pages'] > 0 else '无限'
     
+    # 检查是否有邮件附件权限
+    user_features = limits.get('features', [])
+    has_email_attachment = 'email_attachment' in user_features or user_features == ['all']
+    
     return render_template('profile.html', 
         user=user,
         daily_remaining=daily_remaining,
-        max_pages=max_pages
+        max_pages=max_pages,
+        has_email_attachment=has_email_attachment
     )
 
 
@@ -591,12 +600,15 @@ def login():
 def register():
     """注册"""
     if request.method == 'GET':
-        return render_template('register.html')
+        # 检查邀请码参数
+        invite_code = request.args.get('invite', None)
+        return render_template('register.html', invite_code=invite_code)
     
     data = request.json
     username = data.get('username')
     email = data.get('email')
     password = data.get('password')
+    invite_code = data.get('invite_code', None)  # 邀请码
     
     # 检查用户是否存在
     if User.query.filter_by(username=username).first():
@@ -608,11 +620,76 @@ def register():
     # 创建用户
     user = User(username=username, email=email, user_type='free')
     user.set_password(password)
+    
+    # 生成邀请码（6位随机字符）
+    import random
+    import string
+    user.invite_code = ''.join(random.choices(string.ascii_uppercase + string.digits, k=6))
+    
+    # 处理邀请
+    if invite_code:
+        inviter = User.query.filter_by(invite_code=invite_code).first()
+        if inviter:
+            user.invited_by = inviter.id
+            
+            # 创建邀请记录
+            invitation = UserInvitation(
+                inviter_id=inviter.id,
+                invite_code=invite_code,
+                invitee_id=user.id,
+                invitee_email=email,
+                reward_amount=5.0,
+                status='registered',
+                registered_at=datetime.utcnow()
+            )
+            db.session.add(invitation)
+            
+            # 给邀请人奖励
+            inviter.invite_count += 1
+            inviter.invite_rewards += 5.0
+            inviter.balance += 5.0
+            
+            # 给被邀请人奖励
+            user.balance += 2.0
+            
+            # 创建流水
+            inviter_tx = AccountTransaction(
+                user_id=inviter.id,
+                transaction_type='invite_reward',
+                amount=5.0,
+                balance_before=inviter.balance - 5.0,
+                balance_after=inviter.balance,
+                description=f'邀请用户{username}注册奖励'
+            )
+            db.session.add(inviter_tx)
+            
+            user_tx = AccountTransaction(
+                user_id=user.id,
+                transaction_type='invite_bonus',
+                amount=2.0,
+                balance_before=0,
+                balance_after=2.0,
+                description='新用户注册奖励'
+            )
+            db.session.add(user_tx)
+            
+            # 发送邀请奖励邮件
+            if inviter.email_notify:
+                email_service.send_invite_reward(inviter.email, inviter.username, 5.0, inviter.invite_count)
+    
     db.session.add(user)
     db.session.commit()
     
     session['user_id'] = user.id
-    return jsonify({'success': True, 'user': user.to_dict()})
+    
+    # 发送欢迎邮件
+    email_service.send_welcome_email(user.email, user.username, user.invite_code)
+    
+    return jsonify({
+        'success': True, 
+        'user': user.to_dict(),
+        'invite_reward': user.balance > 0  # 是否获得邀请奖励
+    })
 
 
 @app.route('/logout')
@@ -775,6 +852,86 @@ def request_refund():
     })
 
 
+@app.route('/api/profile/settings', methods=['POST'])
+def update_settings():
+    """更新账户设置"""
+    user = get_current_user()
+    if not user:
+        return jsonify({'error': '请登录'}), 401
+    
+    data = request.json
+    
+    # 手机号
+    if 'phone' in data:
+        phone = data.get('phone', '')
+        if phone and len(phone) >= 10:
+            user.phone = phone
+            user.phone_verified = False
+    
+    # 通知邮箱（更换后邮件通知发送到此邮箱）
+    if 'email' in data:
+        email = data.get('email', '')
+        if email and '@' in email:
+            # 检查邮箱是否已被其他用户使用
+            existing = User.query.filter(User.email == email, User.id != user.id).first()
+            if existing:
+                return jsonify({'error': '该邮箱已被其他用户使用'}), 400
+            user.email = email
+    
+    # 通知设置
+    if 'notify_on_complete' in data:
+        user.notify_on_complete = data.get('notify_on_complete', True)
+    if 'notify_on_expire' in data:
+        user.notify_on_expire = data.get('notify_on_expire', True)
+    if 'notify_with_attachment' in data:
+        # 检查是否有附件权限
+        limits = USER_LIMITS.get(user.user_type, USER_LIMITS['free'])
+        user_features = limits.get('features', [])
+        if 'email_attachment' in user_features or user_features == ['all']:
+            user.notify_with_attachment = data.get('notify_with_attachment', False)
+        else:
+            return jsonify({'error': '邮件附件功能需VIP会员', 'feature': 'email_attachment'}), 403
+    if 'email_notify' in data:
+        user.email_notify = data.get('email_notify', True)
+    
+    db.session.commit()
+    
+    return jsonify({
+        'success': True,
+        'user': user.to_dict()
+    })
+
+
+@app.route('/api/profile/invitations')
+def get_invitations():
+    """获取邀请记录"""
+    user = get_current_user()
+    if not user:
+        return jsonify({'error': '请登录'}), 401
+    
+    invitations = UserInvitation.query.filter_by(inviter_id=user.id)\
+        .order_by(UserInvitation.created_at.desc()).limit(20).all()
+    
+    return jsonify({
+        'success': True,
+        'invitations': [inv.to_dict() for inv in invitations]
+    })
+
+
+@app.route('/api/invite/<invite_code>')
+def check_invite(invite_code):
+    """检查邀请码"""
+    inviter = User.query.filter_by(invite_code=invite_code).first()
+    if not inviter:
+        return jsonify({'valid': False, 'error': '邀请码无效'})
+    
+    return jsonify({
+        'valid': True,
+        'inviter': inviter.username,
+        'reward': 5  # 被邀请人奖励
+    })
+
+
 # ==================== 初始化 ====================
 def init_app():
     """初始化应用"""

config.py

@@ -39,19 +39,19 @@ USER_LIMITS = {
         "daily_translations": 10,
         "max_pages": 50,
         "max_file_size": 30 * 1024 * 1024,  # 30MB
-        "features": ["basic_translate", "retranslate", "export_pdf", "history"],
+        "features": ["basic_translate", "retranslate", "export_pdf", "history", "email_notify"],
     },
     "vip_basic": {  # 基础会员 (月付 ¥29)
         "daily_translations": 50,
         "max_pages": 100,
         "max_file_size": 50 * 1024 * 1024,
-        "features": ["basic_translate", "compare_view", "retranslate", "history", "priority_queue", "export_pdf"],
+        "features": ["basic_translate", "compare_view", "retranslate", "history", "priority_queue", "export_pdf", "email_notify", "email_attachment"],
     },
     "vip_pro": {    # 专业会员 (月付 ¥99)
         "daily_translations": 200,
         "max_pages": 500,
         "max_file_size": 100 * 1024 * 1024,
-        "features": ["basic_translate", "compare_view", "retranslate", "history", "priority_queue", "export_pdf", "batch_translate", "custom_terms"],
+        "features": ["basic_translate", "compare_view", "retranslate", "history", "priority_queue", "export_pdf", "batch_translate", "custom_terms", "email_notify", "email_attachment"],
     },
     "vip_enterprise": {  # 企业会员 (年付 ¥999)
         "daily_translations": -1,  # 无限制

email_service.py

@@ -0,0 +1,210 @@
+"""
+邮件发送服务
+支持SMTP邮件发送、附件发送、模板渲染
+"""
+
+import os
+import smtplib
+from email.mime.text import MIMEText
+from email.mime.multipart import MIMEMultipart
+from email.mime.base import MIMEBase
+from email import encoders
+from datetime import datetime
+from flask import current_app
+
+
+class EmailService:
+    """邮件发送服务"""
+    
+    def __init__(self, smtp_host=None, smtp_port=None, smtp_user=None, smtp_pass=None):
+        self.smtp_host = smtp_host or os.environ.get('SMTP_HOST', 'mail.tphai.com')
+        self.smtp_port = int(smtp_port or os.environ.get('SMTP_PORT', '587'))
+        self.smtp_user = smtp_user or os.environ.get('SMTP_USER', 'favor@tphai.com')
+        self.smtp_pass = smtp_pass or os.environ.get('SMTP_PASS', 'favor@!')
+    
+    def send_email(self, to_email, subject, body, attachment_path=None, attachment_name=None):
+        """发送邮件（支持附件）"""
+        try:
+            # 创建邮件对象
+            msg = MIMEMultipart()
+            msg['From'] = self.smtp_user
+            msg['To'] = to_email
+            msg['Subject'] = subject
+            msg['Date'] = datetime.now().strftime('%a, %d %b %Y %H:%M:%S +0800')
+            msg['Reply-To'] = to_email
+            
+            # 正文
+            msg.attach(MIMEText(body, 'html', 'utf-8'))
+            
+            # 附件
+            if attachment_path and os.path.exists(attachment_path):
+                with open(attachment_path, 'rb') as f:
+                    part = MIMEBase('application', 'octet-stream')
+                    part.set_payload(f.read())
+                    encoders.encode_base64(part)
+                    part.add_header('Content-Disposition', 'attachment',
+                                    filename=attachment_name or os.path.basename(attachment_path))
+                    msg.attach(part)
+            
+            # 发送
+            server = smtplib.SMTP(self.smtp_host, self.smtp_port)
+            server.ehlo()
+            server.login(self.smtp_user, self.smtp_pass)
+            server.sendmail(self.smtp_user, to_email, msg.as_string())
+            server.quit()
+            
+            return True, "发送成功"
+        
+        except Exception as e:
+            return False, str(e)
+    
+    def send_translation_complete(self, user_email, username, filename, output_path, translation_id):
+        """翻译完成通知"""
+        subject = f"【PDF翻译助手】翻译完成 - {filename}"
+        
+        body = f"""
+        <html>
+        <body style="font-family: Arial, sans-serif; max-width: 600px; margin: 0 auto; padding: 20px;">
+            <div style="background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); padding: 30px; text-align: center; border-radius: 10px 10px 0 0;">
+                <h1 style="color: white; margin: 0;">📄 PDF翻译助手</h1>
+            </div>
+            <div style="background: white; padding: 30px; border: 1px solid #eee; border-radius: 0 0 10px 10px;">
+                <p style="color: #333; font-size: 16px;">您好，{username}！</p>
+                <p style="color: #666;">您的翻译任务已完成：</p>
+                
+                <div style="background: #f8f9fa; padding: 15px; border-radius: 5px; margin: 20px 0;">
+                    <p style="margin: 5px 0;"><strong>文件：</strong>{filename}</p>
+                    <p style="margin: 5px 0;"><strong>状态：</strong><span style="color: #28a745;">✅ 完成</span></p>
+                    <p style="margin: 5px 0;"><strong>时间：</strong>{datetime.now().strftime('%Y-%m-%d %H:%M')}</p>
+                </div>
+                
+                <p style="color: #666;">翻译结果已作为附件发送，您也可以登录网站查看详情。</p>
+                
+                <div style="text-align: center; margin: 30px 0;">
+                    <a href="http://localhost:19000/translation/{translation_id}" 
+                       style="background: #667eea; color: white; padding: 12px 30px; text-decoration: none; border-radius: 5px;">
+                        查看翻译结果
+                    </a>
+                </div>
+                
+                <hr style="border: none; border-top: 1px solid #eee; margin: 30px 0;">
+                <p style="color: #999; font-size: 12px; text-align: center;">
+                    此邮件由系统自动发送，请勿回复。<br>
+                    PDF翻译助手 - 让翻译更简单
+                </p>
+            </div>
+        </body>
+        </html>
+        """
+        
+        # 附件名称
+        attachment_name = f"{filename}_translated.md"
+        
+        return self.send_email(user_email, subject, body, output_path, attachment_name)
+    
+    def send_welcome_email(self, user_email, username, invite_code=None):
+        """欢迎邮件"""
+        subject = "欢迎加入PDF翻译助手"
+        
+        body = f"""
+        <html>
+        <body style="font-family: Arial, sans-serif; max-width: 600px; margin: 0 auto; padding: 20px;">
+            <div style="background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); padding: 30px; text-align: center; border-radius: 10px 10px 0 0;">
+                <h1 style="color: white; margin: 0;">📄 PDF翻译助手</h1>
+            </div>
+            <div style="background: white; padding: 30px; border: 1px solid #eee; border-radius: 0 0 10px 10px;">
+                <p style="color: #333; font-size: 16px;">您好，{username}！</p>
+                <p style="color: #666;">欢迎加入PDF翻译助手！您已获得：</p>
+                
+                <div style="background: #f8f9fa; padding: 15px; border-radius: 5px; margin: 20px 0;">
+                    <p style="margin: 5px 0;">✅ 每日免费翻译 10 次</p>
+                    <p style="margin: 5px 0;">✅ 单文件最大 50 页</p>
+                    <p style="margin: 5px 0;">✅ 翻译历史记录</p>
+                    <p style="margin: 5px 0;">✅ 不满意重新翻译</p>
+                </div>
+                
+                {"<p style='color: #666;'>您的专属邀请码：<strong style='color: #667eea;'>" + invite_code + "</strong>，分享给好友可获得奖励！</p>" if invite_code else ""}
+                
+                <div style="text-align: center; margin: 30px 0;">
+                    <a href="http://localhost:19000/" 
+                       style="background: #667eea; color: white; padding: 12px 30px; text-decoration: none; border-radius: 5px;">
+                        开始使用
+                    </a>
+                </div>
+            </div>
+        </body>
+        </html>
+        """
+        
+        return self.send_email(user_email, subject, body)
+    
+    def send_expire_reminder(self, user_email, username, expire_date, user_type):
+        """会员到期提醒"""
+        subject = "【PDF翻译助手】会员即将到期提醒"
+        
+        body = f"""
+        <html>
+        <body style="font-family: Arial, sans-serif; max-width: 600px; margin: 0 auto; padding: 20px;">
+            <div style="background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); padding: 30px; text-align: center; border-radius: 10px 10px 0 0;">
+                <h1 style="color: white; margin: 0;">📄 PDF翻译助手</h1>
+            </div>
+            <div style="background: white; padding: 30px; border: 1px solid #eee; border-radius: 0 0 10px 10px;">
+                <p style="color: #333; font-size: 16px;">您好，{username}！</p>
+                
+                <div style="background: #fff3cd; padding: 15px; border-radius: 5px; margin: 20px 0; border-left: 4px solid #ffc107;">
+                    <p style="margin: 5px 0; color: #856404;">⚠️ 您的会员即将到期</p>
+                    <p style="margin: 5px 0;"><strong>会员类型：</strong>{user_type}</p>
+                    <p style="margin: 5px 0;"><strong>到期时间：</strong>{expire_date}</p>
+                </div>
+                
+                <p style="color: #666;">到期后将降级为免费用户，每日翻译次数限制为10次。续费可继续享受会员权益。</p>
+                
+                <div style="text-align: center; margin: 30px 0;">
+                    <a href="http://localhost:19000/pricing" 
+                       style="background: #667eea; color: white; padding: 12px 30px; text-decoration: none; border-radius: 5px;">
+                        续费会员
+                    </a>
+                </div>
+            </div>
+        </body>
+        </html>
+        """
+        
+        return self.send_email(user_email, subject, body)
+    
+    def send_invite_reward(self, user_email, username, reward_amount, invitee_count):
+        """邀请奖励通知"""
+        subject = f"【PDF翻译助手】邀请奖励 - ¥{reward_amount}"
+        
+        body = f"""
+        <html>
+        <body style="font-family: Arial, sans-serif; max-width: 600px; margin: 0 auto; padding: 20px;">
+            <div style="background: linear-gradient(135deg, #28a745 0%, #20c997 100%); padding: 30px; text-align: center; border-radius: 10px 10px 0 0;">
+                <h1 style="color: white; margin: 0;">🎉 邀请奖励已发放</h1>
+            </div>
+            <div style="background: white; padding: 30px; border: 1px solid #eee; border-radius: 0 0 10px 10px;">
+                <p style="color: #333; font-size: 16px;">您好，{username}！</p>
+                
+                <div style="background: #d4edda; padding: 15px; border-radius: 5px; margin: 20px 0; border-left: 4px solid #28a745;">
+                    <p style="margin: 5px 0; color: #155724;"><strong>奖励金额：</strong>¥{reward_amount}</p>
+                    <p style="margin: 5px 0; color: #155724;"><strong>累计邀请：</strong>{invitee_count}人</p>
+                </div>
+                
+                <p style="color: #666;">奖励已发放到您的账户余额，可用于购买会员或翻译服务。</p>
+                
+                <div style="text-align: center; margin: 30px 0;">
+                    <a href="http://localhost:19000/profile" 
+                       style="background: #28a745; color: white; padding: 12px 30px; text-decoration: none; border-radius: 5px;">
+                        查看余额
+                    </a>
+                </div>
+            </div>
+        </body>
+        </html>
+        """
+        
+        return self.send_email(user_email, subject, body)
+
+
+# 全局邮件服务实例
+email_service = EmailService()

models.py

@@ -41,8 +41,26 @@ class User(db.Model):
     # 余额
     balance = db.Column(db.Float, default=0.0)          # 账户余额（元）
     
+    # 手机号
+    phone = db.Column(db.String(20), nullable=True)     # 手机号
+    phone_verified = db.Column(db.Boolean, default=False)  # 手机号已验证
+    
+    # 邀请系统
+    invite_code = db.Column(db.String(10), unique=True, nullable=True)  # 用户专属邀请码
+    invited_by = db.Column(db.Integer, nullable=True)   # 邀请人ID
+    invite_count = db.Column(db.Integer, default=0)     # 已邀请人数
+    invite_rewards = db.Column(db.Float, default=0.0)   # 邀请奖励金额
+    
+    # 邮件通知设置
+    email_notify = db.Column(db.Boolean, default=True)  # 邮件通知开关
+    notify_on_complete = db.Column(db.Boolean, default=True)  # 翻译完成通知
+    notify_with_attachment = db.Column(db.Boolean, default=False)  # 邮件带附件（VIP功能）
+    notify_on_expire = db.Column(db.Boolean, default=True)   # 会员到期提醒
+    
     # 关系
     translations = db.relationship('Translation', backref='user', lazy=True)
+    invitations = db.relationship('UserInvitation', backref='inviter', lazy=True,
+                                  foreign_keys='UserInvitation.inviter_id')
     recharges = db.relationship('UserRecharge', backref='user', lazy=True)
     refunds = db.relationship('UserRefund', backref='user', lazy=True)
     
@@ -103,11 +121,20 @@ class User(db.Model):
             'id': self.id,
             'username': self.username,
             'email': self.email,
+            'phone': self.phone,
+            'phone_verified': self.phone_verified,
             'user_type': self.user_type,
             'is_vip': self.is_vip(),
             'is_admin': self.is_admin,
             'is_active': self.is_active,
             'balance': self.balance,
+            'invite_code': self.invite_code,
+            'invite_count': self.invite_count,
+            'invite_rewards': self.invite_rewards,
+            'email_notify': self.email_notify,
+            'notify_on_complete': self.notify_on_complete,
+            'notify_with_attachment': self.notify_with_attachment,
+            'notify_on_expire': self.notify_on_expire,
             'daily_count': self.daily_count,
             'total_count': self.total_count,
             'created_at': self.created_at.isoformat() if self.created_at else None,
@@ -709,4 +736,213 @@ class AccountTransaction(db.Model):
             'related_type': self.related_type,
             'description': self.description,
             'created_at': self.created_at.isoformat() if self.created_at else None,
+        }
+
+
+# ==================== 用户邀请记录 ====================
+class UserInvitation(db.Model):
+    """用户邀请记录"""
+    __tablename__ = 'user_invitations'
+    
+    id = db.Column(db.Integer, primary_key=True)
+    
+    # 邀请人
+    inviter_id = db.Column(db.Integer, db.ForeignKey('users.id'), nullable=False)
+    invite_code = db.Column(db.String(10), nullable=False)        # 使用的邀请码
+    
+    # 被邀请人
+    invitee_id = db.Column(db.Integer, db.ForeignKey('users.id'), nullable=True)  # 注册后关联
+    invitee_email = db.Column(db.String(120), nullable=True)      # 被邀请人邮箱（注册前）
+    
+    # 奖励
+    reward_amount = db.Column(db.Float, default=0.0)             # 奖励金额
+    reward_given = db.Column(db.Boolean, default=False)          # 是否已发放奖励
+    
+    # 状态
+    status = db.Column(db.String(20), default='pending')         # pending, registered, rewarded
+    
+    # 时间
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+    registered_at = db.Column(db.DateTime, nullable=True)        # 被邀请人注册时间
+    rewarded_at = db.Column(db.DateTime, nullable=True)          # 奖励发放时间
+    
+    # 关系
+    invitee = db.relationship('User', backref=db.backref('invited_by_record', lazy=True),
+                              foreign_keys=[invitee_id])
+    
+    def to_dict(self):
+        return {
+            'id': self.id,
+            'inviter_id': self.inviter_id,
+            'invite_code': self.invite_code,
+            'invitee_id': self.invitee_id,
+            'invitee_email': self.invitee_email,
+            'reward_amount': self.reward_amount,
+            'reward_given': self.reward_given,
+            'status': self.status,
+            'created_at': self.created_at.isoformat() if self.created_at else None,
+        }
+
+
+# ==================== 邀请奖励配置 ====================
+class InviteRewardConfig(db.Model):
+    """邀请奖励配置"""
+    __tablename__ = 'invite_reward_config'
+    
+    id = db.Column(db.Integer, primary_key=True)
+    
+    # 奖励规则
+    reward_amount = db.Column(db.Float, default=5.0)             # 邀请奖励金额（元）
+    invitee_bonus = db.Column(db.Float, default=2.0)             # 被邀请人 bonus（元）
+    min_invitee_user_type = db.Column(db.String(20), default='free')  # 被邀请人最低等级才能奖励
+    
+    # 限制
+    max_daily_invites = db.Column(db.Integer, default=10)        # 每日最大邀请次数
+    max_total_invites = db.Column(db.Integer, default=100)       # 总最大邀请次数
+    
+    # 状态
+    is_active = db.Column(db.Boolean, default=True)
+    
+    # 时间
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+    updated_at = db.Column(db.DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+    
+    def to_dict(self):
+        return {
+            'id': self.id,
+            'reward_amount': self.reward_amount,
+            'invitee_bonus': self.invitee_bonus,
+            'min_invitee_user_type': self.min_invitee_user_type,
+            'max_daily_invites': self.max_daily_invites,
+            'max_total_invites': self.max_total_invites,
+            'is_active': self.is_active,
+        }
+
+
+# ==================== 邮件通知记录 ====================
+class EmailNotification(db.Model):
+    """邮件通知记录"""
+    __tablename__ = 'email_notifications'
+    
+    id = db.Column(db.Integer, primary_key=True)
+    user_id = db.Column(db.Integer, db.ForeignKey('users.id'), nullable=False)
+    
+    # 邮件信息
+    email_to = db.Column(db.String(120), nullable=False)         # 收件人
+    email_type = db.Column(db.String(30), nullable=False)        # complete, expire, invoice, welcome
+    
+    # 附件
+    has_attachment = db.Column(db.Boolean, default=False)
+    attachment_path = db.Column(db.String(255), nullable=True)   # 附件文件路径
+    attachment_name = db.Column(db.String(100), nullable=True)   # 附件显示名称
+    
+    # 内容
+    subject = db.Column(db.String(200), nullable=True)
+    body_preview = db.Column(db.Text, nullable=True)             # 正文预览
+    
+    # 状态
+    status = db.Column(db.String(20), default='pending')         # pending, sent, failed
+    error_message = db.Column(db.String(255), nullable=True)
+    
+    # 关联
+    related_id = db.Column(db.Integer, nullable=True)            # 关联ID（翻译ID、订单ID等）
+    related_type = db.Column(db.String(30), nullable=True)       # 关联类型
+    
+    # 时间
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+    sent_at = db.Column(db.DateTime, nullable=True)
+    
+    # 关系
+    user = db.relationship('User', backref=db.backref('email_notifications', lazy=True))
+    
+    def to_dict(self):
+        return {
+            'id': self.id,
+            'user_id': self.user_id,
+            'email_to': self.email_to,
+            'email_type': self.email_type,
+            'has_attachment': self.has_attachment,
+            'subject': self.subject,
+            'status': self.status,
+            'created_at': self.created_at.isoformat() if self.created_at else None,
+            'sent_at': self.sent_at.isoformat() if self.sent_at else None,
+        }
+
+
+# ==================== 备用大模型接口配置 ====================
+class BackupLLMConfig(db.Model):
+    """备用大模型接口配置"""
+    __tablename__ = 'backup_llm_config'
+    
+    id = db.Column(db.Integer, primary_key=True)
+    
+    # 服务商信息
+    provider_name = db.Column(db.String(100), nullable=False)    # 服务商名称: OpenAI, DeepSeek, 阿里百炼, etc.
+    api_base = db.Column(db.String(255), nullable=False)         # API地址
+    api_key = db.Column(db.String(255), nullable=True)           # API Key（可选）
+    model = db.Column(db.String(100), nullable=True)             # 默认模型
+    
+    # 状态
+    is_active = db.Column(db.Boolean, default=True)              # 是否启用
+    sort_order = db.Column(db.Integer, default=0)                # 排序
+    
+    # 备注
+    description = db.Column(db.String(255), nullable=True)       # 备注
+    
+    # 时间
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+    updated_at = db.Column(db.DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+    
+    def to_dict(self):
+        return {
+            'id': self.id,
+            'provider_name': self.provider_name,
+            'api_base': self.api_base,
+            'api_key': self.api_key,
+            'model': self.model,
+            'is_active': self.is_active,
+            'sort_order': self.sort_order,
+            'description': self.description,
+            'created_at': self.created_at.isoformat() if self.created_at else None,
+        }
+
+
+# ==================== 邮件模板配置 ====================
+class EmailTemplateConfig(db.Model):
+    """邮件模板配置"""
+    __tablename__ = 'email_template_config'
+    
+    id = db.Column(db.Integer, primary_key=True)
+    
+    template_key = db.Column(db.String(50), unique=True, nullable=False)  # complete, expire, invoice, welcome, invite
+    template_name = db.Column(db.String(100), nullable=False)             # 显示名称
+    
+    # 模板内容
+    subject_template = db.Column(db.String(200), nullable=False)          # 主题模板
+    body_template = db.Column(db.Text, nullable=False)                    # 正文模板（支持变量）
+    
+    # 支持变量说明
+    variables = db.Column(db.Text, nullable=True)                         # JSON: ["username", "filename", ...]
+    
+    # 状态
+    is_active = db.Column(db.Boolean, default=True)
+    
+    # 时间
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+    updated_at = db.Column(db.DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+    
+    def get_variables(self):
+        import json
+        try:
+            return json.loads(self.variables) if self.variables else []
+        except:
+            return []
+    
+    def to_dict(self):
+        return {
+            'id': self.id,
+            'template_key': self.template_key,
+            'template_name': self.template_name,
+            'subject_template': self.subject_template,
+            'is_active': self.is_active,
         }

templates/admin/backup_llm.html

@@ -0,0 +1,173 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <title>备用大模型接口 - 后台管理</title>
+    <link rel="icon" href="/static/img/favicon.svg" type="image/svg+xml">
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.10.0/font/bootstrap-icons.css" rel="stylesheet">
+    <style>
+        body { background-color: #f5f5f5; }
+        .sidebar { position: fixed; top: 0; left: 0; height: 100vh; width: 250px; background: #343a40; padding-top: 60px; }
+        .sidebar .nav-link { color: #adb5bd; padding: 12px 20px; }
+        .sidebar .nav-link:hover, .sidebar .nav-link.active { color: #fff; background: rgba(255,255,255,0.1); }
+        .main-content { margin-left: 250px; padding: 20px; }
+        .status-badge { font-size: 0.75rem; }
+    </style>
+</head>
+<body>
+    <nav class="sidebar">
+        <div class="position-absolute top-0 w-100 p-3 border-bottom border-secondary">
+            <h5 class="text-white mb-0"><i class="bi bi-gear-fill"></i> 后台管理</h5>
+        </div>
+        <ul class="nav flex-column">
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.dashboard') }}"><i class="bi bi-speedometer2"></i> 数据概览</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.users') }}"><i class="bi bi-people"></i> 用户管理</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.translations') }}"><i class="bi bi-file-text"></i> 翻译记录</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.cache_list') }}"><i class="bi bi-database"></i> 缓存管理</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.stats') }}"><i class="bi bi-bar-chart"></i> 统计报表</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.logs') }}"><i class="bi bi-list-check"></i> 操作日志</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.llm_config') }}"><i class="bi bi-cpu"></i> 大模型配置</a></li>
+            <li class="nav-item"><a class="nav-link active" href="{{ url_for('admin.backup_llm_list') }}"><i class="bi bi-cloud"></i> 备用大模型</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.settings') }}"><i class="bi bi-sliders"></i> 系统配置</a></li>
+        </ul>
+        <div class="position-absolute bottom-0 w-100 p-3 border-top border-secondary">
+            <a href="/" class="btn btn-outline-light btn-sm w-100"><i class="bi bi-house"></i> 返回前台</a>
+        </div>
+    </nav>
+
+    <main class="main-content">
+        <div class="d-flex justify-content-between align-items-center mb-3">
+            <h5><i class="bi bi-cloud"></i> 备用大模型接口</h5>
+            <div>
+                <a href="{{ url_for('admin.add_backup_llm') }}" class="btn btn-primary"><i class="bi bi-plus-lg"></i> 新增接口</a>
+                <button class="btn btn-outline-secondary" onclick="initDefaults()"><i class="bi bi-arrow-counterclockwise"></i> 初始化默认</button>
+            </div>
+        </div>
+        
+        <div class="card">
+            <div class="card-body">
+                <table class="table table-hover">
+                    <thead class="table-light">
+                        <tr>
+                            <th style="width: 50px;">#</th>
+                            <th>服务商</th>
+                            <th>API地址</th>
+                            <th>模型</th>
+                            <th style="width: 80px;">状态</th>
+                            <th style="width: 150px;">操作</th>
+                        </tr>
+                    </thead>
+                    <tbody>
+                        {% for config in configs %}
+                        <tr id="row-{{ config.id }}">
+                            <td>{{ config.sort_order }}</td>
+                            <td>
+                                <strong>{{ config.provider_name }}</strong>
+                                {% if config.description %}
+                                <br><small class="text-muted">{{ config.description }}</small>
+                                {% endif %}
+                            </td>
+                            <td><code>{{ config.api_base }}</code></td>
+                            <td><code>{{ config.model or '默认' }}</code></td>
+                            <td>
+                                {% if config.is_active %}
+                                <span class="badge bg-success status-badge">启用</span>
+                                {% else %}
+                                <span class="badge bg-secondary status-badge">禁用</span>
+                                {% endif %}
+                            </td>
+                            <td>
+                                <button class="btn btn-sm btn-outline-primary" onclick="testConfig({{ config.id }})" title="测试连接">
+                                    <i class="bi bi-plug"></i>
+                                </button>
+                                <a href="{{ url_for('admin.edit_backup_llm', config_id=config.id) }}" class="btn btn-sm btn-outline-secondary" title="编辑">
+                                    <i class="bi bi-pencil"></i>
+                                </a>
+                                <button class="btn btn-sm btn-outline-warning" onclick="toggleConfig({{ config.id }})" title="切换状态">
+                                    <i class="bi bi-toggle2"></i>
+                                </button>
+                                <button class="btn btn-sm btn-outline-danger" onclick="deleteConfig({{ config.id }})" title="删除">
+                                    <i class="bi bi-trash"></i>
+                                </button>
+                            </td>
+                        </tr>
+                        {% endfor %}
+                    </tbody>
+                </table>
+                
+                {% if not configs %}
+                <div class="text-center text-muted py-4">
+                    <i class="bi bi-cloud-slash" style="font-size: 2rem;"></i>
+                    <p>暂无备用大模型配置</p>
+                    <button class="btn btn-outline-primary" onclick="initDefaults()">点击初始化默认配置</button>
+                </div>
+                {% endif %}
+            </div>
+        </div>
+        
+        <div id="testResult" class="mt-3" style="display:none;"></div>
+    </main>
+    
+    <script>
+    function testConfig(id) {
+        const resultDiv = document.getElementById('testResult');
+        resultDiv.style.display = 'block';
+        resultDiv.innerHTML = '<div class="alert alert-info"><i class="bi bi-hourglass-split"></i> 正在测试连接...</div>';
+        
+        fetch(`/admin/backup-llm/${id}/test`, {method: 'POST'})
+        .then(r => r.json())
+        .then(res => {
+            if (res.success) {
+                resultDiv.innerHTML = `<div class="alert alert-success"><i class="bi bi-check-circle"></i> ${res.provider} 连接成功！模型: ${res.model}</div>`;
+            } else {
+                resultDiv.innerHTML = `<div class="alert alert-danger"><i class="bi bi-x-circle"></i> 连接失败: ${res.error}</div>`;
+            }
+        })
+        .catch(err => {
+            resultDiv.innerHTML = `<div class="alert alert-danger"><i class="bi bi-x-circle"></i> 请求失败: ${err}</div>`;
+        });
+    }
+    
+    function toggleConfig(id) {
+        fetch(`/admin/backup-llm/${id}/toggle`, {method: 'POST'})
+        .then(r => r.json())
+        .then(res => {
+            if (res.success) {
+                location.reload();
+            } else {
+                alert('操作失败');
+            }
+        });
+    }
+    
+    function deleteConfig(id) {
+        if (confirm('确定删除此备用大模型接口吗？')) {
+            fetch(`/admin/backup-llm/${id}/delete`, {method: 'POST'})
+            .then(r => r.json())
+            .then(res => {
+                if (res.success) {
+                    document.getElementById(`row-${id}`).remove();
+                } else {
+                    alert('删除失败');
+                }
+            });
+        }
+    }
+    
+    function initDefaults() {
+        if (confirm('初始化默认备用大模型配置？')) {
+            fetch('/admin/backup-llm/init', {method: 'POST'})
+            .then(r => r.json())
+            .then(res => {
+                if (res.success) {
+                    location.reload();
+                } else {
+                    alert('初始化失败');
+                }
+            });
+        }
+    }
+    </script>
+</body>
+</html>

templates/admin/backup_llm_form.html

@@ -0,0 +1,188 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <title>{{ config ? '编辑' : '添加' }}备用大模型接口 - 后台管理</title>
+    <link rel="icon" href="/static/img/favicon.svg" type="image/svg+xml">
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.10.0/font/bootstrap-icons.css" rel="stylesheet">
+    <style>
+        body { background-color: #f5f5f5; }
+        .sidebar { position: fixed; top: 0; left: 0; height: 100vh; width: 250px; background: #343a40; padding-top: 60px; }
+        .sidebar .nav-link { color: #adb5bd; padding: 12px 20px; }
+        .sidebar .nav-link:hover, .sidebar .nav-link.active { color: #fff; background: rgba(255,255,255,0.1); }
+        .main-content { margin-left: 250px; padding: 20px; }
+    </style>
+</head>
+<body>
+    <nav class="sidebar">
+        <div class="position-absolute top-0 w-100 p-3 border-bottom border-secondary">
+            <h5 class="text-white mb-0"><i class="bi bi-gear-fill"></i> 后台管理</h5>
+        </div>
+        <ul class="nav flex-column">
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.dashboard') }}"><i class="bi bi-speedometer2"></i> 数据概览</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.users') }}"><i class="bi bi-people"></i> 用户管理</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.translations') }}"><i class="bi bi-file-text"></i> 翻译记录</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.cache_list') }}"><i class="bi bi-database"></i> 缓存管理</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.stats') }}"><i class="bi bi-bar-chart"></i> 统计报表</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.logs') }}"><i class="bi bi-list-check"></i> 操作日志</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.llm_config') }}"><i class="bi bi-cpu"></i> 大模型配置</a></li>
+            <li class="nav-item"><a class="nav-link active" href="{{ url_for('admin.backup_llm_list') }}"><i class="bi bi-cloud"></i> 备用大模型</a></li>
+            <li class="nav-item"><a class="nav-link" href="{{ url_for('admin.settings') }}"><i class="bi bi-sliders"></i> 系统配置</a></li>
+        </ul>
+        <div class="position-absolute bottom-0 w-100 p-3 border-top border-secondary">
+            <a href="/" class="btn btn-outline-light btn-sm w-100"><i class="bi bi-house"></i> 返回前台</a>
+        </div>
+    </nav>
+
+    <main class="main-content">
+        <div class="card">
+            <div class="card-header">
+                <h6 class="mb-0"><i class="bi bi-cloud-plus"></i> {{ config ? '编辑备用大模型接口' : '添加备用大模型接口' }}</h6>
+            </div>
+            <div class="card-body">
+                <form id="configForm" onsubmit="return saveConfig(event)">
+                    <div class="mb-3">
+                        <label class="form-label">服务商名称 <span class="text-danger">*</span></label>
+                        <input type="text" class="form-control" name="provider_name" 
+                               value="{{ config.provider_name if config else '' }}" 
+                               placeholder="例如: OpenAI, DeepSeek, 阿里百炼" required>
+                        <small class="text-muted">显示名称，方便识别</small>
+                    </div>
+                    
+                    <div class="mb-3">
+                        <label class="form-label">API地址 <span class="text-danger">*</span></label>
+                        <input type="text" class="form-control" name="api_base" 
+                               value="{{ config.api_base if config else '' }}" 
+                               placeholder="https://api.openai.com/v1" required>
+                        <small class="text-muted">LLM服务的API endpoint</small>
+                    </div>
+                    
+                    <div class="mb-3">
+                        <label class="form-label">API Key</label>
+                        <input type="text" class="form-control" name="api_key" 
+                               value="{{ config.api_key if config else '' }}" 
+                               placeholder="sk-xxx（可选）">
+                        <small class="text-muted">如果不需要可留空</small>
+                    </div>
+                    
+                    <div class="mb-3">
+                        <label class="form-label">默认模型</label>
+                        <input type="text" class="form-control" name="model" 
+                               value="{{ config.model if config else '' }}" 
+                               placeholder="gpt-4, deepseek-chat">
+                        <small class="text-muted">推荐使用的模型ID</small>
+                    </div>
+                    
+                    <div class="mb-3">
+                        <label class="form-label">备注</label>
+                        <input type="text" class="form-control" name="description" 
+                               value="{{ config.description if config else '' }}" 
+                               placeholder="接口说明">
+                    </div>
+                    
+                    <div class="row mb-3">
+                        <div class="col-md-6">
+                            <label class="form-label">排序</label>
+                            <input type="number" class="form-control" name="sort_order" 
+                                   value="{{ config.sort_order if config else 0 }}">
+                        </div>
+                        <div class="col-md-6">
+                            <label class="form-label">状态</label>
+                            <select class="form-select" name="is_active">
+                                <option value="true" {% if not config or config.is_active %}selected{% endif %}>启用</option>
+                                <option value="false" {% if config and not config.is_active %}selected{% endif %}>禁用</option>
+                            </select>
+                        </div>
+                    </div>
+                    
+                    <div class="mt-3">
+                        <button type="submit" class="btn btn-primary"><i class="bi bi-check-lg"></i> 保存</button>
+                        <button type="button" class="btn btn-outline-secondary" onclick="testConfig()"><i class="bi bi-plug"></i> 测试连接</button>
+                        <a href="{{ url_for('admin.backup_llm_list') }}" class="btn btn-outline-secondary"><i class="bi bi-arrow-left"></i> 返回</a>
+                    </div>
+                </form>
+                
+                <div id="testResult" class="mt-3" style="display:none;"></div>
+            </div>
+        </div>
+    </main>
+    
+    <script>
+    function saveConfig(e) {
+        e.preventDefault();
+        const formData = new FormData(document.getElementById('configForm'));
+        const data = {};
+        formData.forEach((value, key) => {
+            if (key === 'sort_order') {
+                data[key] = parseInt(value) || 0;
+            } else if (key === 'is_active') {
+                data[key] = value === 'true';
+            } else {
+                data[key] = value;
+            }
+        });
+        
+        {% if config %}
+        const url = `/admin/backup-llm/{{ config.id }}/edit`;
+        {% else %}
+        const url = '/admin/backup-llm/add';
+        {% endif %}
+        
+        fetch(url, {
+            method: 'POST',
+            headers: {'Content-Type': 'application/json'},
+            body: JSON.stringify(data)
+        })
+        .then(r => r.json())
+        .then(res => {
+            if (res.success) {
+                alert('保存成功！');
+                window.location.href = '/admin/backup-llm';
+            } else {
+                alert('保存失败: ' + (res.error || '未知错误'));
+            }
+        })
+        .catch(err => alert('请求失败: ' + err));
+        
+        return false;
+    }
+    
+    function testConfig() {
+        const formData = new FormData(document.getElementById('configForm'));
+        const resultDiv = document.getElementById('testResult');
+        resultDiv.style.display = 'block';
+        resultDiv.innerHTML = '<div class="alert alert-info"><i class="bi bi-hourglass-split"></i> 正在测试连接...</div>';
+        
+        // 先临时保存，然后测试
+        {% if config %}
+        // 已有配置，直接测试
+        fetch(`/admin/backup-llm/{{ config.id }}/test`, {method: 'POST'})
+        {% else %}
+        // 新配置，需要先创建
+        const data = {};
+        formData.forEach((value, key) => {
+            if (key === 'sort_order') data[key] = parseInt(value) || 0;
+            else if (key === 'is_active') data[key] = value === 'true';
+            else data[key] = value;
+        });
+        
+        // 直接用输入的数据测试（不保存）
+        resultDiv.innerHTML = '<div class="alert alert-warning"><i class="bi bi-info-circle"></i> 新配置请先保存后再测试</div>';
+        return;
+        {% endif %}
+        .then(r => r.json())
+        .then(res => {
+            if (res.success) {
+                resultDiv.innerHTML = `<div class="alert alert-success"><i class="bi bi-check-circle"></i> ${res.provider} 连接成功！模型: ${res.model}</div>`;
+            } else {
+                resultDiv.innerHTML = `<div class="alert alert-danger"><i class="bi bi-x-circle"></i> 连接失败: ${res.error}</div>`;
+            }
+        })
+        .catch(err => {
+            resultDiv.innerHTML = `<div class="alert alert-danger"><i class="bi bi-x-circle"></i> 请求失败: ${err}</div>`;
+        });
+    }
+    </script>
+</body>
+</html>

templates/admin/llm_config.html

@@ -90,20 +90,17 @@
         </div>
         
         <div class="card mt-3">
-            <div class="card-header"><h6 class="mb-0"><i class="bi bi-info-circle"></i> 常用模型配置参考</h6></div>
+            <div class="card-header d-flex justify-content-between align-items-center">
+                <h6 class="mb-0"><i class="bi bi-cloud"></i> 备用大模型接口</h6>
+                <a href="{{ url_for('admin.backup_llm_list') }}" class="btn btn-sm btn-outline-primary">
+                    <i class="bi bi-gear"></i> 管理备用接口
+                </a>
+            </div>
             <div class="card-body">
-                <table class="table table-sm">
-                    <thead class="table-light">
-                        <tr><th>服务商</th><th>API地址</th><th>模型示例</th></tr>
-                    </thead>
-                    <tbody>
-                        <tr><td>本地LM Studio</td><td>http://localhost:1234/v1</td><td>根据加载的模型</td></tr>
-                        <tr><td>OpenAI</td><td>https://api.openai.com/v1</td><td>gpt-4, gpt-3.5-turbo</td></tr>
-                        <tr><td>DeepSeek</td><td>https://api.deepseek.com/v1</td><td>deepseek-chat</td></tr>
-                        <tr><td>阿里百炼</td><td>https://dashscope.aliyuncs.com/compatible-mode/v1</td><td>qwen-turbo, qwen-plus</td></tr>
-                        <tr><td>SiliconFlow</td><td>https://api.siliconflow.cn/v1</td><td>Qwen/Qwen2.5-72B-Instruct</td></tr>
-                    </tbody>
-                </table>
+                <p class="text-muted">备用大模型接口用于主接口不可用时切换备用服务。支持手动新增、编辑、测试连接。</p>
+                <a href="{{ url_for('admin.backup_llm_list') }}" class="btn btn-outline-secondary">
+                    <i class="bi bi-list"></i> 查看所有备用接口
+                </a>
             </div>
         </div>
     </main>

templates/pricing.html

@@ -66,7 +66,7 @@
             </div>
             
             <!-- 动态套餐 -->
-            {% for plan in db_plans if plan.is_active %}
+            {% for plan in plans if plan.is_active %}
             <div class="col-lg-3 col-md-6 mb-4">
                 <div class="card pricing-card h-100 {% if plan.is_recommended %}border-primary{% endif %}">
                     {% if plan.is_recommended %}

templates/profile.html

@@ -134,7 +134,7 @@
         </div>
 
         <!-- 会员购买记录 -->
-        <div class="card">
+        <div class="card mb-4">
             <div class="card-header">
                 <h5 class="mb-0">🎫 会员购买记录</h5>
             </div>
@@ -157,6 +157,145 @@
                 </div>
             </div>
         </div>
+
+        <!-- 账户设置 -->
+        <div class="card mb-4">
+            <div class="card-header">
+                <h5 class="mb-0">⚙️ 账户设置</h5>
+            </div>
+            <div class="card-body">
+                <div class="row">
+                    <!-- 手机号绑定 -->
+                    <div class="col-md-6 mb-3">
+                        <div class="border rounded p-3">
+                            <h6 class="mb-3">📱 手机号</h6>
+                            <div id="phoneStatus">
+                                {% if user.phone %}
+                                <p class="text-success">已绑定：{{ user.phone }}
+                                    {% if user.phone_verified %}<span class="badge bg-success">已验证</span>{% endif %}
+                                </p>
+                                <button class="btn btn-outline-secondary btn-sm" onclick="showPhoneModal()">更换手机号</button>
+                                {% else %}
+                                <p class="text-muted">未绑定手机号</p>
+                                <button class="btn btn-primary btn-sm" onclick="showPhoneModal()">绑定手机号</button>
+                                {% endif %}
+                            </div>
+                        </div>
+                    </div>
+                    
+                    <!-- 邮件通知设置 -->
+                    <div class="col-md-6 mb-3">
+                        <div class="border rounded p-3">
+                            <h6 class="mb-3">📧 通知邮箱</h6>
+                            <div id="emailStatus">
+                                {% if user.email %}
+                                <p class="mb-2">当前通知邮箱：<strong>{{ user.email }}</strong></p>
+                                <button class="btn btn-outline-secondary btn-sm mb-3" onclick="showEmailModal()">更换通知邮箱</button>
+                                {% else %}
+                                <p class="text-muted">未设置通知邮箱</p>
+                                <button class="btn btn-primary btn-sm" onclick="showEmailModal()">绑定邮箱</button>
+                                {% endif %}
+                                
+                                <hr class="my-2">
+                                
+                                <!-- 翻译完成邮件通知（所有用户都有） -->
+                                <div class="form-check mb-2">
+                                    <input class="form-check-input" type="checkbox" id="notifyComplete" 
+                                           {% if user.notify_on_complete %}checked{% endif %}
+                                           onchange="updateNotifySettings()">
+                                    <label class="form-check-label">翻译完成邮件通知</label>
+                                </div>
+                                
+                                <!-- 邮件带附件（VIP功能） -->
+                                {% if has_email_attachment %}
+                                <div class="form-check mb-2">
+                                    <input class="form-check-input" type="checkbox" id="notifyAttachment" 
+                                           {% if user.notify_with_attachment %}checked{% endif %}
+                                           onchange="updateNotifySettings()">
+                                    <label class="form-check-label">邮件带附件发送 <span class="badge bg-success">VIP</span></label>
+                                </div>
+                                {% else %}
+                                <div class="form-check mb-2">
+                                    <input class="form-check-input" type="checkbox" disabled>
+                                    <label class="form-check-label text-muted">邮件带附件发送 <span class="badge bg-secondary">需VIP</span></label>
+                                    <a href="/pricing" class="small ms-2">升级会员</a>
+                                </div>
+                                {% endif %}
+                                
+                                <!-- 会员到期提醒 -->
+                                {% if user.user_type.startswith('vip') %}
+                                <div class="form-check mb-2">
+                                    <input class="form-check-input" type="checkbox" id="notifyExpire"
+                                           {% if user.notify_on_expire %}checked{% endif %}
+                                           onchange="updateNotifySettings()">
+                                    <label class="form-check-label">会员到期提醒</label>
+                                </div>
+                                {% endif %}
+                                
+                                <small class="text-muted">通知将发送至上述邮箱</small>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </div>
+
+        <!-- 邀请好友 -->
+        <div class="card mb-4">
+            <div class="card-header">
+                <h5 class="mb-0">🎁 邀请好友</h5>
+            </div>
+            <div class="card-body">
+                <div class="row">
+                    <div class="col-md-6">
+                        <div class="border rounded p-3 bg-light">
+                            <h6>您的专属邀请码</h6>
+                            <div class="input-group mb-3">
+                                <input type="text" class="form-control form-control-lg text-center fw-bold" 
+                                       id="inviteCode" value="{{ user.invite_code or '生成中...' }}" readonly>
+                                <button class="btn btn-outline-primary" onclick="copyInviteCode()">复制</button>
+                            </div>
+                            <p class="text-muted mb-0">
+                                分享邀请码给好友，好友注册后您可获得 <strong class="text-success">¥5</strong> 奖励！
+                            </p>
+                        </div>
+                    </div>
+                    <div class="col-md-6">
+                        <div class="border rounded p-3">
+                            <h6>邀请统计</h6>
+                            <div class="d-flex justify-content-around text-center">
+                                <div>
+                                    <div class="fs-4 fw-bold text-primary">{{ user.invite_count }}</div>
+                                    <small class="text-muted">已邀请</small>
+                                </div>
+                                <div>
+                                    <div class="fs-4 fw-bold text-success">¥{{ "%.2f"|format(user.invite_rewards) }}</div>
+                                    <small class="text-muted">累计奖励</small>
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+                
+                <!-- 邀请记录 -->
+                <div class="mt-3">
+                    <h6>邀请记录</h6>
+                    <table class="table table-sm">
+                        <thead>
+                            <tr>
+                                <th>被邀请人</th>
+                                <th>注册时间</th>
+                                <th>奖励</th>
+                                <th>状态</th>
+                            </tr>
+                        </thead>
+                        <tbody id="inviteRecords">
+                            <!-- 动态加载 -->
+                        </tbody>
+                    </table>
+                </div>
+            </div>
+        </div>
     </main>
 
     <!-- 充值模态框 -->
@@ -229,6 +368,33 @@
         </div>
     </div>
 
+    <!-- 更换邮箱模态框 -->
+    <div class="modal fade" id="emailModal" tabindex="-1">
+        <div class="modal-dialog">
+            <div class="modal-content">
+                <div class="modal-header">
+                    <h5 class="modal-title">更换通知邮箱</h5>
+                    <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
+                </div>
+                <div class="modal-body">
+                    <form id="emailForm">
+                        <div class="mb-3">
+                            <label class="form-label">新邮箱地址</label>
+                            <input type="email" class="form-control" id="newEmail" placeholder="example@email.com" required>
+                        </div>
+                        <div class="alert alert-info">
+                            <small>💡 更换后，通知邮件将发送至新邮箱</small>
+                        </div>
+                    </form>
+                </div>
+                <div class="modal-footer">
+                    <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">取消</button>
+                    <button type="button" class="btn btn-primary" onclick="submitEmail()">确认更换</button>
+                </div>
+            </div>
+        </div>
+    </div>
+
     <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/js/bootstrap.bundle.min.js"></script>
     <script>
         // 加载账户流水
@@ -340,10 +506,123 @@
         // 初始化
         loadTransactions();
         loadPurchases();
+        loadInviteRecords();
 
         document.getElementById('transactionFilter').addEventListener('change', function() {
             loadTransactions(this.value);
         });
+        
+        // 加载邀请记录
+        function loadInviteRecords() {
+            fetch('/api/profile/invitations')
+                .then(r => r.json())
+                .then(data => {
+                    const tbody = document.getElementById('inviteRecords');
+                    if (data.invitations && data.invitations.length > 0) {
+                        tbody.innerHTML = data.invitations.map(inv => {
+                            const statusMap = { 'pending': '待注册', 'registered': '已注册', 'rewarded': '已奖励' };
+                            const statusClass = { 'pending': 'text-muted', 'registered': 'text-info', 'rewarded': 'text-success' };
+                            return `<tr>
+                                <td>${inv.invitee_email || '用户' + inv.invitee_id}</td>
+                                <td>${inv.created_at}</td>
+                                <td>¥${inv.reward_amount.toFixed(2)}</td>
+                                <td><span class="${statusClass[inv.status]}">${statusMap[inv.status]}</span></td>
+                            </tr>`;
+                        }).join('');
+                    } else {
+                        tbody.innerHTML = '<tr><td colspan="4" class="text-muted text-center">暂无邀请记录</td></tr>';
+                    }
+                });
+        }
+        
+        // 复制邀请码
+        function copyInviteCode() {
+            const code = document.getElementById('inviteCode').value;
+            navigator.clipboard.writeText(code).then(() => {
+                alert('邀请码已复制：' + code);
+            });
+        }
+        
+        // 更新通知设置
+        function updateNotifySettings() {
+            const notifyComplete = document.getElementById('notifyComplete').checked;
+            const notifyExpire = document.getElementById('notifyExpire')?.checked || false;
+            const notifyAttachment = document.getElementById('notifyAttachment')?.checked || false;
+            
+            fetch('/api/profile/settings', {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify({
+                    notify_on_complete: notifyComplete,
+                    notify_on_expire: notifyExpire,
+                    notify_with_attachment: notifyAttachment
+                })
+            })
+            .then(r => r.json())
+            .then(data => {
+                if (data.success) {
+                    console.log('设置已更新');
+                } else if (data.feature === 'email_attachment') {
+                    alert('邮件附件功能需要VIP会员');
+                    location.href = '/pricing';
+                } else {
+                    alert('更新失败：' + data.error);
+                }
+            });
+        }
+        
+        // 绑定手机号
+        function showPhoneModal() {
+            // 简单处理，直接弹输入框
+            const phone = prompt('请输入手机号：');
+            if (phone && phone.length >= 10) {
+                fetch('/api/profile/settings', {
+                    method: 'POST',
+                    headers: { 'Content-Type': 'application/json' },
+                    body: JSON.stringify({ phone: phone })
+                })
+                .then(r => r.json())
+                .then(data => {
+                    if (data.success) {
+                        alert('手机号已绑定');
+                        location.reload();
+                    } else {
+                        alert('绑定失败：' + data.error);
+                    }
+                });
+            } else if (phone) {
+                alert('手机号格式不正确');
+            }
+        }
+        
+        // 更换邮箱
+        function showEmailModal() {
+            new bootstrap.Modal(document.getElementById('emailModal')).show();
+        }
+        
+        function submitEmail() {
+            const newEmail = document.getElementById('newEmail').value;
+            
+            if (!newEmail || !newEmail.includes('@')) {
+                alert('请输入有效的邮箱地址');
+                return;
+            }
+            
+            fetch('/api/profile/settings', {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify({ email: newEmail })
+            })
+            .then(r => r.json())
+            .then(data => {
+                if (data.success) {
+                    alert('通知邮箱已更新为：' + newEmail);
+                    location.reload();
+                } else {
+                    alert('更新失败：' + data.error);
+                }
+            });
+        }
     </script>
 </body>
 </html>