# =============================================================================
# MinIO Nginx 配置
# =============================================================================
#
# 功能:
#   - MinIO API 反向代理 (S3 兼容)
#   - MinIO Console 反向代理
#   - SSL/TLS 终止
#   - 静态资源 CDN 缓存
#
# 安装:
#   sudo cp minio.szaiai.com.conf /etc/nginx/sites-available/
#   sudo ln -s /etc/nginx/sites-available/minio.szaiai.com.conf /etc/nginx/sites-enabled/
#   sudo nginx -t && sudo systemctl reload nginx
#
# SSL 证书 (使用 certbot):
#   sudo certbot --nginx -d minio.szaiai.com -d cdn.szaiai.com
#
# =============================================================================

# 上游服务器定义
upstream minio_api {
    server 127.0.0.1:9000;
    keepalive 32;
}

upstream minio_console {
    server 127.0.0.1:9001;
    keepalive 32;
}

# =============================================================================
# MinIO API (S3 兼容) - minio.szaiai.com
# =============================================================================
server {
    listen 80;
    listen [::]:80;
    server_name minio.szaiai.com;

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

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name minio.szaiai.com;

    # SSL 配置 (由 certbot 管理)
    ssl_certificate /etc/letsencrypt/live/minio.szaiai.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/minio.szaiai.com/privkey.pem;
    include /etc/letsencrypt/options-ssl-nginx.conf;
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;

    # 日志
    access_log /var/log/nginx/minio.szaiai.com.access.log;
    error_log /var/log/nginx/minio.szaiai.com.error.log;

    # 客户端配置
    client_max_body_size 100M;
    client_body_buffer_size 128k;
    client_body_timeout 300s;

    # 代理缓冲配置
    proxy_buffering off;
    proxy_request_buffering off;

    # MinIO API 代理
    location / {
        proxy_pass http://minio_api;
        proxy_http_version 1.1;

        # 保持连接
        proxy_set_header Connection "";

        # 必要的头部
        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;

        # S3 特定头部
        proxy_set_header X-Forwarded-Host $host;
        proxy_set_header X-Forwarded-Port $server_port;

        # 超时配置
        proxy_connect_timeout 60s;
        proxy_send_timeout 300s;
        proxy_read_timeout 300s;

        # WebSocket 支持 (用于控制台实时日志)
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }
}

# =============================================================================
# MinIO Console - console.minio.szaiai.com
# =============================================================================
server {
    listen 80;
    listen [::]:80;
    server_name console.minio.szaiai.com;

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

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name console.minio.szaiai.com;

    # SSL 配置
    ssl_certificate /etc/letsencrypt/live/minio.szaiai.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/minio.szaiai.com/privkey.pem;
    include /etc/letsencrypt/options-ssl-nginx.conf;
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;

    # 日志
    access_log /var/log/nginx/console.minio.access.log;
    error_log /var/log/nginx/console.minio.error.log;

    # MinIO Console 代理
    location / {
        proxy_pass http://minio_console;
        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;

        # WebSocket 支持 (Console 实时功能)
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";

        # 超时配置
        proxy_connect_timeout 60s;
        proxy_send_timeout 60s;
        proxy_read_timeout 60s;
    }
}

# =============================================================================
# CDN 静态资源 - cdn.szaiai.com
# =============================================================================
# 用于公开访问的静态资源 (头像、资源文件等)
# =============================================================================
server {
    listen 80;
    listen [::]:80;
    server_name cdn.szaiai.com;

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

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name cdn.szaiai.com;

    # SSL 配置
    ssl_certificate /etc/letsencrypt/live/cdn.szaiai.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/cdn.szaiai.com/privkey.pem;
    include /etc/letsencrypt/options-ssl-nginx.conf;
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;

    # 日志
    access_log /var/log/nginx/cdn.szaiai.com.access.log;
    error_log /var/log/nginx/cdn.szaiai.com.error.log;

    # 缓存配置
    proxy_cache_path /var/cache/nginx/minio levels=1:2 keys_zone=minio_cache:100m max_size=10g inactive=7d use_temp_path=off;

    # 公开存储桶 - avatars
    location /avatars/ {
        proxy_pass http://minio_api/avatars/;
        proxy_http_version 1.1;
        proxy_set_header Connection "";

        # 缓存配置
        proxy_cache minio_cache;
        proxy_cache_valid 200 7d;
        proxy_cache_valid 404 1m;
        proxy_cache_use_stale error timeout updating http_500 http_502 http_503 http_504;
        proxy_cache_lock on;

        # 缓存头部
        add_header X-Cache-Status $upstream_cache_status;
        add_header Cache-Control "public, max-age=604800";

        # CORS 配置
        add_header Access-Control-Allow-Origin "*";
        add_header Access-Control-Allow-Methods "GET, HEAD, OPTIONS";
    }

    # 公开存储桶 - resources
    location /resources/ {
        proxy_pass http://minio_api/resources/;
        proxy_http_version 1.1;
        proxy_set_header Connection "";

        # 缓存配置
        proxy_cache minio_cache;
        proxy_cache_valid 200 7d;
        proxy_cache_valid 404 1m;
        proxy_cache_use_stale error timeout updating http_500 http_502 http_503 http_504;
        proxy_cache_lock on;

        # 缓存头部
        add_header X-Cache-Status $upstream_cache_status;
        add_header Cache-Control "public, max-age=604800";

        # CORS 配置
        add_header Access-Control-Allow-Origin "*";
        add_header Access-Control-Allow-Methods "GET, HEAD, OPTIONS";
    }

    # 默认拒绝其他路径
    location / {
        return 403;
    }
}