# Nginx 配置文件 - AI学习平台

# 上游后端服务器
upstream backend {
    server localhost:3001;
    keepalive 64;
}

# HTTP 服务器配置
server {
    listen 80;
    server_name _;  # 使用 IP 访问，_ 表示匹配所有域名和 IP
    
    # 客户端最大请求体大小
    client_max_body_size 10M;
    
    # 日志配置
    access_log /var/log/nginx/ai-learning-access.log;
    error_log /var/log/nginx/ai-learning-error.log;
    
    # 前端静态文件
    location / {
        root /var/www/ai-learning-platform/frontend/dist;
        index index.html;
        try_files $uri $uri/ /index.html;
        
        # 静态资源缓存
        location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
            expires 1y;
            add_header Cache-Control "public, immutable";
        }
    }
    
    # API 代理
    location /api {
        proxy_pass http://backend;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_cache_bypass $http_upgrade;
        
        # 超时设置
        proxy_connect_timeout 60s;
        proxy_send_timeout 60s;
        proxy_read_timeout 60s;
    }
    
    # 健康检查
    location /health {
        access_log off;
        return 200 "healthy\n";
        add_header Content-Type text/plain;
    }
}

# HTTPS 服务器配置（可选，需要 SSL 证书）
# server {
#     listen 443 ssl http2;
#     server_name localhost;  # 修改为您的域名
#     
#     # SSL 证书配置
#     ssl_certificate /path/to/your/certificate.crt;
#     ssl_certificate_key /path/to/your/private.key;
#     
#     # SSL 优化配置
#     ssl_protocols TLSv1.2 TLSv1.3;
#     ssl_ciphers HIGH:!aNULL:!MD5;
#     ssl_prefer_server_ciphers on;
#     ssl_session_cache shared:SSL:10m;
#     ssl_session_timeout 10m;
#     
#     # 客户端最大请求体大小
#     client_max_body_size 10M;
#     
#     # 日志配置
#     access_log /var/log/nginx/ai-learning-ssl-access.log;
#     error_log /var/log/nginx/ai-learning-ssl-error.log;
#     
#     # 前端静态文件
#     location / {
#         root /var/www/ai-learning-platform/frontend/dist;
#         index index.html;
#         try_files $uri $uri/ /index.html;
#         
#         # 静态资源缓存
#         location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
#             expires 1y;
#             add_header Cache-Control "public, immutable";
#         }
#     }
#     
#     # API 代理
#     location /api {
#         proxy_pass http://backend;
#         proxy_http_version 1.1;
#         proxy_set_header Upgrade $http_upgrade;
#         proxy_set_header Connection 'upgrade';
#         proxy_set_header Host $host;
#         proxy_set_header X-Real-IP $remote_addr;
#         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
#         proxy_set_header X-Forwarded-Proto $scheme;
#         proxy_cache_bypass $http_upgrade;
#         
#         # 超时设置
#         proxy_connect_timeout 60s;
#         proxy_send_timeout 60s;
#         proxy_read_timeout 60s;
#     }
#     
#     # 健康检查
#     location /health {
#         access_log off;
#         return 200 "healthy\n";
#         add_header Content-Type text/plain;
#     }
# }
# 
# # HTTP 重定向到 HTTPS
# server {
#     listen 80;
#     server_name localhost;  # 修改为您的域名
#     return 301 https://$server_name$request_uri;
# }