# WordPress Multisite server configuration
# Map for allowed CORS origins
map $http_origin $cors_origin {
    default "";
    "~^https?://host\.uk\.com$" $http_origin;
    "~^https?://social\.host\.uk\.com$" $http_origin;
    "~^https?://link\.host\.uk\.com$" $http_origin;
    "~^https?://analytics\.host\.uk\.com$" $http_origin;
    "~^https?://trust\.host\.uk\.com$" $http_origin;
    "~^https?://notify\.host\.uk\.com$" $http_origin;
    "~^https?://localhost(:[0-9]+)?$" $http_origin;
    "~^https?://127\.0\.0\.1(:[0-9]+)?$" $http_origin;
}

server {
    listen [::]:80 default_server;
    listen 80 default_server;

    # Only accept subdomain traffic (*.host.uk.com), not apex domain
    # The apex domain (host.uk.com) should route to Host Hub (Laravel)
    server_name ~^(?<subdomain>.+)\.host\.uk\.com$ hestia.host.uk.com *.host.uk.com;

    # Serve error page for apex domain - this shouldn't hit WordPress
    # If it does, Coolify routing is misconfigured
    error_page 503 /wp-content/routing-error.html;
    if ($host = "host.uk.com") {
        return 503;
    }

    # Reject completely unknown hosts with connection close
    if ($host !~ "\.host\.uk\.com$") {
        return 444;
    }

    sendfile off;
    tcp_nodelay on;
    absolute_redirect off;

    root /var/www/html;
    index index.php;

    client_max_body_size 64M;

    # Security headers
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-XSS-Protection "1; mode=block" always;

    # WordPress multisite rewrite rules
    location / {
        try_files $uri $uri/ /index.php?$args;
    }

    # REST API with CORS headers for headless operation
    location /wp-json/ {
        # Handle preflight OPTIONS requests
        if ($request_method = 'OPTIONS') {
            add_header 'Access-Control-Allow-Origin' $cors_origin always;
            add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, PATCH, DELETE, OPTIONS' always;
            add_header 'Access-Control-Allow-Headers' 'Authorization, Content-Type, X-WP-Nonce' always;
            add_header 'Access-Control-Allow-Credentials' 'true' always;
            add_header 'Access-Control-Max-Age' 86400 always;
            add_header 'Content-Length' 0;
            add_header 'Content-Type' 'text/plain';
            return 204;
        }

        # Add CORS headers to actual requests
        add_header 'Access-Control-Allow-Origin' $cors_origin always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;
        add_header 'Access-Control-Expose-Headers' 'X-WP-Total, X-WP-TotalPages, Link' always;

        try_files $uri $uri/ /index.php?$args;
    }

    # Pass the PHP scripts to PHP-FPM listening on unix socket
    location ~ \.php$ {
        try_files $uri =404;
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass unix:/run/php-fpm.sock;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_param PATH_INFO $fastcgi_path_info;
        fastcgi_param HTTP_X_FORWARDED_PROTO $http_x_forwarded_proto;
        fastcgi_index index.php;
        fastcgi_buffering off;
        fastcgi_read_timeout 300;
        include fastcgi_params;
    }

    # Cache static assets
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
        expires max;
        log_not_found off;
        access_log off;
    }

    location = /favicon.ico {
        log_not_found off;
        access_log off;
    }

    location = /robots.txt {
        allow all;
        log_not_found off;
        access_log off;
    }

    # Block XML-RPC by default, allow with secret token
    # Usage: /xmlrpc.php?token=YOUR_XMLRPC_TOKEN
    location = /xmlrpc.php {
        set $xmlrpc_allowed 0;

        # Allow if valid token provided (set in environment or change here)
        if ($arg_token = "xrpc-9f8e7d6c5b4a") {
            set $xmlrpc_allowed 1;
        }

        # Block if no valid token
        if ($xmlrpc_allowed = 0) {
            return 403;
        }

        # Pass to PHP if allowed
        try_files $uri =404;
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass unix:/run/php-fpm.sock;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_index index.php;
        include fastcgi_params;
    }

    # Deny access to hidden files
    location ~ /\. {
        deny all;
        access_log off;
        log_not_found off;
    }

    # Deny access to backup files
    location ~ ~$ {
        access_log off;
        log_not_found off;
        deny all;
    }

    # Allow fpm ping and status from localhost
    location ~ ^/(fpm-status|fpm-ping)$ {
        access_log off;
        allow 127.0.0.1;
        deny all;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
        fastcgi_pass unix:/run/php-fpm.sock;
    }
}