# ============================================================================
# 114.66.54.70 Nginx 配置 (服务器2)
#
# 部署步骤:
# 1. 上传配置: scp nginx-114.66.54.70.conf root@114.66.54.70:/tmp/
# 2. 复制配置: sudo cp /tmp/nginx-114.66.54.70.conf /etc/nginx/sites-available/api.conf
# 3. 启用配置: sudo ln -s /etc/nginx/sites-available/api.conf /etc/nginx/sites-enabled/
# 4. 从服务器1复制SSL证书:
#    scp -r root@110.42.32.207:/etc/nginx/ssl /etc/nginx/
# 5. 测试重载: sudo nginx -t && sudo systemctl reload nginx
# ============================================================================

# WebSocket 连接升级映射
map $http_upgrade $connection_upgrade {
    default upgrade;
    '' close;
}

# ============================================================================
# HTTP (端口 80) - 重定向到 HTTPS
# ============================================================================
server {
    listen 80;
    server_name api.valuefrontier.cn 114.66.54.70;

    location /.well-known/acme-challenge/ {
        root /var/www/html;
    }

    location / {
        return 301 https://$host$request_uri;
    }
}

# ============================================================================
# HTTPS (端口 443) - API 服务
# ============================================================================
server {
    listen 443 ssl http2;
    server_name api.valuefrontier.cn 114.66.54.70;

    # SSL 证书 (从服务器1复制)
    ssl_certificate /etc/nginx/ssl/api.valuefrontier.cn/fullchain.pem;
    ssl_certificate_key /etc/nginx/ssl/api.valuefrontier.cn/privkey.pem;

    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_prefer_server_ciphers off;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 1d;

    client_max_body_size 20M;

    set $cors_origin 'https://valuefrontier.cn';

    # ============================================
    # Flask API 代理
    # ============================================
    location /api/ {
        if ($request_method = 'OPTIONS') {
            add_header 'Access-Control-Allow-Origin' $cors_origin always;
            add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;
            add_header 'Access-Control-Allow-Headers' 'Origin, Content-Type, Accept, Authorization, X-Requested-With, Cookie' always;
            add_header 'Access-Control-Allow-Credentials' 'true' always;
            add_header 'Access-Control-Max-Age' 86400;
            add_header 'Content-Length' 0;
            return 204;
        }

        proxy_hide_header Access-Control-Allow-Origin;
        proxy_hide_header Access-Control-Allow-Credentials;
        proxy_hide_header Access-Control-Allow-Methods;
        proxy_hide_header Access-Control-Allow-Headers;
        proxy_hide_header Access-Control-Expose-Headers;

        proxy_pass http://127.0.0.1:5001;
        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_set_header Connection "";

        add_header 'Access-Control-Allow-Origin' $cors_origin always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;

        proxy_connect_timeout 60s;
        proxy_send_timeout 120s;
        proxy_read_timeout 120s;
    }

    # ============================================
    # WebSocket - Socket.IO
    # ============================================
    location /socket.io/ {
        proxy_pass http://127.0.0.1:5001;
        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_connect_timeout 7d;
        proxy_send_timeout 7d;
        proxy_read_timeout 7d;
        proxy_buffering off;
    }

    # ============================================
    # 实时行情 WebSocket (代理到其他服务器)
    # ============================================
    location /ws/sse {
        proxy_pass http://101.43.133.214:8765;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $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_connect_timeout 7d;
        proxy_send_timeout 7d;
        proxy_read_timeout 7d;
        proxy_buffering off;
    }

    location /ws/szse {
        proxy_pass http://222.128.1.157:8765;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $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_connect_timeout 7d;
        proxy_send_timeout 7d;
        proxy_read_timeout 7d;
        proxy_buffering off;
    }

    # ============================================
    # MCP 服务（本地）
    # ============================================
    location /mcp/ {
        # 处理 OPTIONS 预检请求
        if ($request_method = 'OPTIONS') {
            add_header 'Access-Control-Allow-Origin' $cors_origin always;
            add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, PUT, DELETE' always;
            add_header 'Access-Control-Allow-Headers' 'Origin, Content-Type, Accept, Authorization, X-Requested-With, Cookie' always;
            add_header 'Access-Control-Allow-Credentials' 'true' always;
            add_header 'Access-Control-Max-Age' 86400;
            add_header 'Content-Length' 0;
            return 204;
        }

        # 隐藏后端返回的 CORS 头（避免重复）
        proxy_hide_header Access-Control-Allow-Origin;
        proxy_hide_header Access-Control-Allow-Credentials;
        proxy_hide_header Access-Control-Allow-Methods;
        proxy_hide_header Access-Control-Allow-Headers;
        proxy_hide_header Access-Control-Expose-Headers;

        proxy_pass http://127.0.0.1:8900/;
        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_set_header Connection '';

        # 统一添加 CORS 头
        add_header 'Access-Control-Allow-Origin' $cors_origin always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;

        # SSE 流式响应配置
        proxy_buffering off;
        proxy_cache off;
        chunked_transfer_encoding on;
        gzip off;
        add_header X-Accel-Buffering no;

        proxy_connect_timeout 75s;
        proxy_send_timeout 300s;
        proxy_read_timeout 300s;
    }

    # ============================================
    # 数据服务 API 代理 (222.128.1.157)
    # ============================================
    location /concept-api/ {
        # 处理 OPTIONS 预检请求
        if ($request_method = 'OPTIONS') {
            add_header 'Access-Control-Allow-Origin' $cors_origin always;
            add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
            add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
            add_header 'Access-Control-Allow-Credentials' 'true' always;
            add_header 'Access-Control-Max-Age' 86400;
            add_header 'Content-Length' 0;
            return 204;
        }

        # 隐藏后端返回的 CORS 头（避免重复）
        proxy_hide_header Access-Control-Allow-Origin;
        proxy_hide_header Access-Control-Allow-Credentials;
        proxy_hide_header Access-Control-Allow-Methods;
        proxy_hide_header Access-Control-Allow-Headers;
        proxy_hide_header Access-Control-Expose-Headers;

        proxy_pass http://222.128.1.157:16801/;
        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;

        # 统一添加 CORS 头
        add_header 'Access-Control-Allow-Origin' $cors_origin always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;

        proxy_connect_timeout 60s;
        proxy_send_timeout 60s;
        proxy_read_timeout 60s;
    }

    location /es-api/ {
        # 处理 OPTIONS 预检请求
        if ($request_method = 'OPTIONS') {
            add_header 'Access-Control-Allow-Origin' $cors_origin always;
            add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS, HEAD' always;
            add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
            add_header 'Access-Control-Allow-Credentials' 'true' always;
            add_header 'Access-Control-Max-Age' 86400;
            add_header 'Content-Length' 0;
            return 204;
        }

        proxy_hide_header Access-Control-Allow-Origin;
        proxy_hide_header Access-Control-Allow-Credentials;
        proxy_hide_header Access-Control-Allow-Methods;
        proxy_hide_header Access-Control-Allow-Headers;
        proxy_hide_header Access-Control-Expose-Headers;

        proxy_pass http://222.128.1.157:19200/;
        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;

        add_header 'Access-Control-Allow-Origin' $cors_origin always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;

        proxy_connect_timeout 60s;
        proxy_send_timeout 60s;
        proxy_read_timeout 60s;
        proxy_buffering off;
    }

    location /news-api/ {
        # 处理 OPTIONS 预检请求
        if ($request_method = 'OPTIONS') {
            add_header 'Access-Control-Allow-Origin' $cors_origin always;
            add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
            add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
            add_header 'Access-Control-Allow-Credentials' 'true' always;
            add_header 'Access-Control-Max-Age' 86400;
            add_header 'Content-Length' 0;
            return 204;
        }

        proxy_hide_header Access-Control-Allow-Origin;
        proxy_hide_header Access-Control-Allow-Credentials;
        proxy_hide_header Access-Control-Allow-Methods;
        proxy_hide_header Access-Control-Allow-Headers;
        proxy_hide_header Access-Control-Expose-Headers;

        proxy_pass http://222.128.1.157:21891/;
        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;

        add_header 'Access-Control-Allow-Origin' $cors_origin always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;

        proxy_connect_timeout 90s;
        proxy_send_timeout 90s;
        proxy_read_timeout 90s;
    }

    location /report-api/ {
        # 处理 OPTIONS 预检请求
        if ($request_method = 'OPTIONS') {
            add_header 'Access-Control-Allow-Origin' $cors_origin always;
            add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
            add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
            add_header 'Access-Control-Allow-Credentials' 'true' always;
            add_header 'Access-Control-Max-Age' 86400;
            add_header 'Content-Length' 0;
            return 204;
        }

        proxy_hide_header Access-Control-Allow-Origin;
        proxy_hide_header Access-Control-Allow-Credentials;
        proxy_hide_header Access-Control-Allow-Methods;
        proxy_hide_header Access-Control-Allow-Headers;
        proxy_hide_header Access-Control-Expose-Headers;

        proxy_pass http://222.128.1.157:8811/;
        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;

        add_header 'Access-Control-Allow-Origin' $cors_origin always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;

        proxy_connect_timeout 120s;
        proxy_send_timeout 120s;
        proxy_read_timeout 120s;
    }

    location /category-api/ {
        # 处理 OPTIONS 预检请求
        if ($request_method = 'OPTIONS') {
            add_header 'Access-Control-Allow-Origin' $cors_origin always;
            add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
            add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
            add_header 'Access-Control-Allow-Credentials' 'true' always;
            add_header 'Access-Control-Max-Age' 86400;
            add_header 'Content-Length' 0;
            return 204;
        }

        proxy_hide_header Access-Control-Allow-Origin;
        proxy_hide_header Access-Control-Allow-Credentials;
        proxy_hide_header Access-Control-Allow-Methods;
        proxy_hide_header Access-Control-Allow-Headers;
        proxy_hide_header Access-Control-Expose-Headers;

        proxy_pass http://222.128.1.157:18827/;
        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;

        add_header 'Access-Control-Allow-Origin' $cors_origin always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;

        proxy_connect_timeout 120s;
        proxy_send_timeout 120s;
        proxy_read_timeout 120s;

        proxy_buffering on;
        proxy_buffer_size 128k;
        proxy_buffers 8 256k;
        proxy_busy_buffers_size 512k;
    }

    # ============================================
    # Bytedesk 客服系统代理 (43.143.189.195)
    # ============================================

    location /bytedesk/ {
        proxy_pass http://43.143.189.195/;
        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;

        add_header 'Access-Control-Allow-Origin' $cors_origin always;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, PUT, DELETE' always;
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;

        if ($request_method = 'OPTIONS') {
            return 204;
        }

        proxy_connect_timeout 120s;
        proxy_send_timeout 120s;
        proxy_read_timeout 120s;
    }

    location /websocket {
        proxy_pass http://43.143.189.195/websocket;
        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_connect_timeout 86400s;
        proxy_send_timeout 86400s;
        proxy_read_timeout 86400s;
    }

    location /chat/ {
        proxy_pass http://43.143.189.195/chat/;
        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;

        # 替换响应内容中的 IP 地址
        sub_filter 'http://43.143.189.195' 'https://www.valuefrontier.cn';
        sub_filter_once off;
        sub_filter_types text/css text/javascript application/javascript application/json;

        add_header 'Access-Control-Allow-Origin' $cors_origin always;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, PUT, DELETE' always;
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;

        if ($request_method = 'OPTIONS') {
            return 204;
        }

        proxy_connect_timeout 120s;
        proxy_send_timeout 120s;
        proxy_read_timeout 120s;
    }

    location /config/ {
        proxy_pass http://43.143.189.195/config/;
        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;

        add_header 'Access-Control-Allow-Origin' $cors_origin always;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, PUT, DELETE' always;
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;

        if ($request_method = 'OPTIONS') {
            return 204;
        }

        proxy_connect_timeout 120s;
        proxy_send_timeout 120s;
        proxy_read_timeout 120s;
    }

    location ^~ /uploads/ {
        proxy_pass http://43.143.189.195/uploads/;
        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;

        # 隐藏后端返回的可能冲突的头
        proxy_hide_header Access-Control-Allow-Origin;
        proxy_hide_header Access-Control-Allow-Credentials;
        proxy_hide_header Access-Control-Allow-Methods;
        proxy_hide_header Access-Control-Allow-Headers;
        proxy_hide_header X-Content-Type-Options;
        proxy_hide_header Cross-Origin-Resource-Policy;

        # 解决 ORB 问题
        add_header 'Access-Control-Allow-Origin' '*' always;
        add_header 'Access-Control-Allow-Methods' 'GET, OPTIONS' always;
        add_header 'Access-Control-Allow-Headers' 'Origin, Content-Type, Accept' always;
        add_header 'Cross-Origin-Resource-Policy' 'cross-origin' always;

        proxy_cache_valid 200 1d;
        expires 1d;
        add_header Cache-Control "public, max-age=86400";
    }

    location ^~ /file/ {
        proxy_pass http://43.143.189.195/file/;
        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;

        # 隐藏后端返回的可能冲突的头
        proxy_hide_header Access-Control-Allow-Origin;
        proxy_hide_header Access-Control-Allow-Credentials;
        proxy_hide_header Access-Control-Allow-Methods;
        proxy_hide_header Access-Control-Allow-Headers;
        proxy_hide_header X-Content-Type-Options;
        proxy_hide_header Cross-Origin-Resource-Policy;

        # 解决 ORB 问题
        add_header 'Access-Control-Allow-Origin' '*' always;
        add_header 'Access-Control-Allow-Methods' 'GET, OPTIONS' always;
        add_header 'Access-Control-Allow-Headers' 'Origin, Content-Type, Accept' always;
        add_header 'Cross-Origin-Resource-Policy' 'cross-origin' always;

        proxy_cache_valid 200 1d;
        expires 1d;
        add_header Cache-Control "public, max-age=86400";
    }

    location /visitor/ {
        proxy_pass http://43.143.189.195/visitor/;
        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_set_header Accept-Encoding "";

        # 替换 JSON 响应中的 IP 地址
        sub_filter 'http://43.143.189.195' 'https://www.valuefrontier.cn';
        sub_filter_once off;
        sub_filter_types application/json;

        add_header 'Access-Control-Allow-Origin' $cors_origin always;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, PUT, DELETE' always;
        add_header 'Access-Control-Allow-Headers' 'Content-Type, Authorization, X-Requested-With' always;

        if ($request_method = 'OPTIONS') {
            return 204;
        }

        proxy_connect_timeout 120s;
        proxy_send_timeout 120s;
        proxy_read_timeout 120s;
    }

    location = /stomp {
        # 代理到 bytedesk 的 /websocket 端点
        proxy_pass http://43.143.189.195/websocket;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $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;

        add_header 'Access-Control-Allow-Origin' $cors_origin always;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;

        if ($request_method = 'OPTIONS') {
            return 204;
        }

        proxy_connect_timeout 7d;
        proxy_send_timeout 7d;
        proxy_read_timeout 7d;
        proxy_buffering off;
    }

    location /stomp/ {
        # 代理到 bytedesk 的 /websocket 端点
        proxy_pass http://43.143.189.195/websocket;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $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;

        add_header 'Access-Control-Allow-Origin' $cors_origin always;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;

        if ($request_method = 'OPTIONS') {
            return 204;
        }

        proxy_connect_timeout 7d;
        proxy_send_timeout 7d;
        proxy_read_timeout 7d;
        proxy_buffering off;
    }

    location ^~ /avatars/ {
        proxy_pass http://43.143.189.195/uploads/;
        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;

        # 隐藏后端返回的可能冲突的头
        proxy_hide_header Access-Control-Allow-Origin;
        proxy_hide_header Access-Control-Allow-Credentials;
        proxy_hide_header Access-Control-Allow-Methods;
        proxy_hide_header Access-Control-Allow-Headers;
        proxy_hide_header X-Content-Type-Options;
        proxy_hide_header Cross-Origin-Resource-Policy;

        # 解决 ORB 问题
        add_header 'Access-Control-Allow-Origin' '*' always;
        add_header 'Access-Control-Allow-Methods' 'GET, OPTIONS' always;
        add_header 'Access-Control-Allow-Headers' 'Origin, Content-Type, Accept' always;
        add_header 'Cross-Origin-Resource-Policy' 'cross-origin' always;

        proxy_cache_valid 200 1d;
        proxy_cache_bypass $http_cache_control;
    }

    location /assets/ {
        proxy_pass http://43.143.189.195/assets/;
        proxy_set_header Host $host;

        expires 1d;
        add_header Cache-Control "public, immutable";
    }

    # ============================================
    # 健康检查
    # ============================================
    location /health {
        return 200 'ok';
        add_header Content-Type text/plain;
    }

    # ============================================
    # 微信域名验证
    # ============================================
    location = /MP_verify_17Fo4JhapMw6vtNa.txt {
        return 200 '17Fo4JhapMw6vtNa';
        add_header Content-Type text/plain;
    }

    location = /gvQnxIQ5Rs.txt {
        return 200 'd526e9e857dbd2621e5100811972e8c5';
        add_header Content-Type text/plain;
    }

    # ============================================
    # 默认返回 404
    # ============================================
    location / {
        return 404 '{"error": "Not Found"}';
        add_header Content-Type application/json;
    }
}