# 宁夏智慧养殖监管平台 - 前端服务配置
server {
    listen 80;
    server_name localhost;
    root /usr/share/nginx/html;
    index index.html index.htm;

    # 字符编码
    charset utf-8;

    # 访问日志
    access_log /var/log/nginx/access.log main;

    # 静态资源缓存配置
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
        add_header Vary Accept-Encoding;
        access_log off;
    }

    # 处理Vue Router的history模式
    location / {
        try_files $uri $uri/ /index.html;
        add_header Cache-Control "no-cache, no-store, must-revalidate";
        add_header Pragma "no-cache";
        add_header Expires "0";
    }

    # API代理到后端服务
    location /api/ {
        # 后端服务地址（在docker-compose中定义）
        proxy_pass http://backend:5350;
        
        # 代理头设置
        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;
        
        # 超时设置
        proxy_connect_timeout 10s;
        proxy_send_timeout 10s;
        proxy_read_timeout 10s;
        
        # 缓冲设置
        proxy_buffering on;
        proxy_buffer_size 4k;
        proxy_buffers 8 4k;
        
        # WebSocket支持
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }

    # WebSocket专用代理
    location /socket.io/ {
        proxy_pass http://backend:5350;
        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;
        
        # WebSocket特定超时
        proxy_read_timeout 86400;
    }

    # 百度地图API代理（解决跨域问题）
    location /map-api/ {
        proxy_pass https://api.map.baidu.com/;
        proxy_set_header Host api.map.baidu.com;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_ssl_server_name on;
        
        # 添加CORS头
        add_header Access-Control-Allow-Origin *;
        add_header Access-Control-Allow-Methods 'GET, POST, OPTIONS';
        add_header Access-Control-Allow-Headers 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
    }

    # 健康检查端点
    location /health {
        access_log off;
        return 200 "healthy\n";
        add_header Content-Type text/plain;
    }

    # 安全配置
    location ~ /\. {
        deny all;
        access_log off;
        log_not_found off;
    }

    # 防止访问敏感文件
    location ~* \.(env|log|sql)$ {
        deny all;
        access_log off;
        log_not_found off;
    }

    # 错误页面
    error_page 404 /404.html;
    error_page 500 502 503 504 /50x.html;
    
    location = /50x.html {
        root /usr/share/nginx/html;
    }
}