# Nginx 静态文件服务 + 智能代理 + 自定义 404 页面

# HTTP 重定向到 HTTPS
server {
    listen 80;
    server_name _;
    return 301 https://$host$request_uri;
}

server {
    # 静态资源根目录（dist）
    root /usr/share/nginx/html;
    index index.html;

    # SSL 配置
    listen 443 ssl;
    ssl_certificate /etc/nginx/ssl/scs1779764972146_redpowerfuture.com_server.crt;
    ssl_certificate_key /etc/nginx/ssl/scs1779764972146_redpowerfuture.com_server.key;
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers HIGH:!aNULL:!MD5;

    # 自定义 404 页面，保持 404 状态码
    error_page 404 /404.html;

    location = /404.html {
        internal;
    }

    # 根路径默认进入网页端
    location = / {
        return 302 /web/index.html;
    }

    # 兼容无斜杠访问
    location = /web {
        return 302 /web/;
    }

    location = /sys {
        return 302 /sys/;
    }

    # 网页端（public/web/index.html -> dist/web/index.html）
    location /web/ {
        alias /usr/share/nginx/html/web/;
        try_files $uri $uri/ /web/index.html;
    }

    # 后台管理端（dist/index.html，前缀 /sys/）
    location /sys/ {
        alias /usr/share/nginx/html/;
        try_files $uri $uri/ /index.html;
    }

    # 1. 先尝试作为静态文件查找
    location / {
        try_files $uri $uri/ @proxy;
    }

    # 2. 无法找到的请求（API路径）代理到后端
    location @proxy {
        # 判断 URI 最后一段是否有扩展名
        # 有扩展名返回 404，无扩展名则代理
        if ($uri ~ \.[^./]+$) {
            return 404;
        }

        proxy_pass http://116.204.74.41:8000;
        proxy_http_version 1.1;
        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_connect_timeout 30s;
        proxy_send_timeout 30s;
        proxy_read_timeout 30s;
    }
}