user www-data;
worker_processes auto;
pid /run/nginx.pid;
include /etc/nginx/modules-enabled/*.conf;

events {
    worker_connections 1024; # 提高连接数上限
    multi_accept on;         # 允许多连接同时接受
}

http {
    ##
    # 基本设置
    ##
    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
    keepalive_requests 1000; # 增加连接复用次数
    types_hash_max_size 2048;

    include /etc/nginx/mime.types;
    default_type application/octet-stream;

    ##
    # SSL 设置
    ##
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2 TLSv1.3;
    ssl_prefer_server_ciphers on;

    ##
    # 日志设置
    ##
    set_real_ip_from 0.0.0.0/0;  # 允许所有代理传递真实 IP
    real_ip_header X-Forwarded-For;
    real_ip_recursive on;
    log_format custom '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';
    access_log /var/log/nginx/access.log custom;
    error_log /var/log/nginx/error.log;

    ##
    # Gzip 压缩设置
    ##
    gzip on;
    gzip_disable "msie6";
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_buffers 16 8k;
    gzip_http_version 1.1;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript video/mp2t application/vnd.ms-fontobject application/x-font-ttf font/opentype font/woff2 image/svg+xml image/x-icon;

    ##
    # 缓存路径配置
    ##
    proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=cache_zone:10m max_size=500m inactive=24h use_temp_path=off;

    ##
    # 虚拟主机配置
    ##
    include /etc/nginx/conf.d/*.conf;
    # include /etc/nginx/sites-enabled/*;

    # 定义变量以简化配置
    map $server_port $host_name {
        20000 cdn.163189.xyz;
        20001 cdn3.163189.xyz;
        20002 cdn12.jdshipin.com;
        20003 cdn6.163189.xyz;
        20004 v2hcdn.jdshipin.com;
        20005 edge3.hkdvb.com;
        20006 cdn5.163189.xyz;
        20007 cdn2.163189.xyz;
        20008 aktv.top;
        30001 www.stream-link.org;
        30002 sc2025.stream-link.org;
        30003 live-edge-06.stream-link.org;
    }

    # 定义默认缓存配置
    proxy_cache_valid 200 206 5s;
    proxy_cache_methods GET HEAD;
    proxy_ignore_headers Cache-Control Expires;
    expires 5s;

    # 服务器配置
    server {
        listen 20000 default_server;
        listen [::]:20000 default_server;
        server_name $host_name; # 使用变量替换域名

        # 启用 HTTP/2
        listen 443 ssl http2;

        add_header X-Cache-Status $upstream_cache_status;
        add_header X-Cache-TTL $upstream_http_x_cache_ttl;

        proxy_set_header X-Real-IP $remote_addr;  # 传递客户端真实 IP
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;  # 支持多级代理
        proxy_set_header Host $host_name;  # 确保请求的 Host 匹配 Cloudflare 配置

        proxy_ssl_protocols TLSv1 TLSv1.1 TLSv1.2 TLSv1.3; # 指定 SSL 协议
        proxy_ssl_ciphers HIGH:!aNULL:!MD5;               # 设置加密套件
        proxy_ssl_verify off;                             # 忽略上游服务器证书验证
        proxy_ssl_server_name on;

        proxy_cache cache_zone;  # 使用指定的缓存区域
        proxy_cache_lock on;  # 启用缓存锁

        location / {
            proxy_pass https://$host_name;  # 使用变量替换源站地址
        }

        # 针对 .ts 和 .aac 文件的特殊缓存设置
        location ~* \.(ts|aac)$ {
            proxy_pass https://$host_name;  # 使用变量替换源站地址
            proxy_cache_valid 200 206 60s;  # 缓存 .ts 文件 60 秒
            expires 60s;  # 设置浏览器端缓存 60 秒
        }

        # 针对 .m3u8 文件内容修改
        location ~ \.m3u8$ {
            proxy_pass https://aktv.top;

            # 替换为相对路径
            sub_filter 'https://aktv.top/AKTV/stream/' '/AKTV/stream/';
            sub_filter_once off;
            sub_filter_types application/vnd.apple.mpegurl text/plain;

            # 解压 gzip 压缩内容（如源站启用了压缩）
            gzip off;
            proxy_set_header Accept-Encoding "";
        }

        # 针对 .m3u 文件内容修改
        location ~ \.m3u$ {
            proxy_pass https://www.stream-link.org;

            # 替换为相对路径
            sub_filter 'https://sc2025.stream-link.org' 'http://$host:30002';
            sub_filter_once off;
            # sub_filter_types application/vnd.apple.mpegurl text/plain;

            # 解压 gzip 压缩内容（如源站启用了压缩）
            gzip off;
            proxy_set_header Accept-Encoding "";
        }

        # 针对包含 smt2.1.5.php 的 URL，设置缓存时间为 60 秒
        location ~ smt2\.1\.5\.php {
            proxy_cache_valid 200 206 60s; # 缓存 60 秒
            expires 60s;                  # 设置浏览器缓存 60 秒
            proxy_pass https://cdn12.jdshipin.com;
        }
    }

    # 额外的服务器配置
    server {
        listen 30001;
        listen [::]:30001;
        server_name $host_name;

        add_header X-Cache-Status $upstream_cache_status;
        add_header X-Cache-TTL $upstream_http_x_cache_ttl;

        proxy_set_header User-Agent "TiviMate/5.1.0";
        proxy_set_header Referer "https://www.stream-link.org/";
        proxy_set_header Host www.stream-link.org;
        proxy_set_header Accept "*/*";  # 允许所有类型的内容
        proxy_set_header Connection "keep-alive";

        proxy_ssl_protocols TLSv1 TLSv1.1 TLSv1.2 TLSv1.3; # 指定 SSL 协议
        proxy_ssl_ciphers HIGH:!aNULL:!MD5;               # 设置加密套件
        proxy_ssl_verify off;                             # 忽略上游服务器证书验证
        proxy_ssl_server_name on;

        proxy_cache cache_zone;  # 使用指定的缓存区域
        proxy_cache_lock on;  # 启用缓存锁

        location / {
            proxy_pass https://www.stream-link.org;  # 使用变量替换源站地址
        }
    }

    # 其他服务器配置
    server {
        listen 30002;
        listen [::]:30002;
        server_name $host_name;

        location / {
            proxy_pass https://sc2025.stream-link.org;
            proxy_set_header Host sc2025.stream-link.org;
            proxy_set_header User-Agent "TiviMate/5.1.0";
            proxy_set_header Referer "https://sc2025.stream-link.org/";
            proxy_redirect ~https?://[^/]+(/.*) http://$host:30003$1;
        }
    }

    server {
        listen 30003;
        listen [::]:30003;
        server_name $host_name;

        location / {
            proxy_pass https://live-edge-06.stream-link.org;
            proxy_set_header Host live-edge-06.stream-link.org;
            proxy_set_header User-Agent "TiviMate/5.1.0";
            proxy_set_header Referer "https://live-edge-06.stream-link.org/";
        }
    }
}