# Production Nginx Configuration
# Based on default.conf but adapted for single-container deployment

# PHP-FPM runs in same container via Supervisor
upstream php-upstream {
    server 127.0.0.1:9000;
}

# HTTP Server - Redirect to HTTPS
server {
    listen 80;
    listen [::]:80;
    server_name _;

    # Health check on HTTP
    location /health {
        access_log off;
        return 200 "healthy\n";
        add_header Content-Type text/plain;
    }

    # ACME Challenge for Let's Encrypt
    location ^~ /.well-known/acme-challenge/ {
        default_type "text/plain";
        root /var/www/certbot;
        allow all;
    }

    # Redirect all other traffic to HTTPS
    location / {
        return 301 https://$host$request_uri;
    }
}

# HTTPS Server
server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name _;

    # SSL Configuration
    ssl_certificate /var/www/ssl/cert.pem;
    ssl_certificate_key /var/www/ssl/key.pem;
    ssl_protocols TLSv1.3 TLSv1.2;
    ssl_prefer_server_ciphers on;
    ssl_ciphers ECDHE-RSA-AES256-GCM-SHA512:DHE-RSA-AES256-GCM-SHA512:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384;

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

    # Security headers
    add_header X-Frame-Options "DENY" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header Referrer-Policy "no-referrer-when-downgrade" always;
    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains" always;

    # Gzip
    gzip on;
    gzip_vary on;
    gzip_types text/css application/javascript application/json image/svg+xml;
    gzip_comp_level 5;

    # ACME Challenge for Let's Encrypt
    location ^~ /.well-known/acme-challenge/ {
        default_type "text/plain";
        root /var/www/certbot;
        allow all;
    }

    # Health check endpoint
    location /health {
        access_log off;
        return 200 "healthy\n";
        add_header Content-Type text/plain;
    }

    # Static assets with caching
    location ~* \.(jpg|jpeg|png|gif|ico|svg|woff|woff2|ttf|eot)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
        try_files $uri =404;
    }

    location ~* \.(css|js|map)$ {
        expires 1w;
        add_header Cache-Control "public, max-age=604800";
        try_files $uri =404;
    }

    # Service Worker
    location = /sw.js {
        alias /var/www/html/public/sw.js;
        add_header Cache-Control "no-cache, must-revalidate";
        add_header Service-Worker-Allowed "/";
    }

    location = /js/sw-push.js {
        alias /var/www/html/public/js/sw-push.js;
        add_header Cache-Control "no-cache, must-revalidate";
        add_header Service-Worker-Allowed "/";
        add_header Content-Type "application/javascript; charset=utf-8";
    }

    # Main application
    location / {
        try_files $uri $uri/ /index.php?$query_string;
        autoindex off;
    }

    # PHP-FPM
    location ~ \.php$ {
        try_files $uri =404;
        include fastcgi_params;
        fastcgi_pass php-upstream;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_param PATH_INFO $fastcgi_path_info;
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_param APP_ENV production;
        fastcgi_param HTTPS on;

        fastcgi_read_timeout 60s;
        fastcgi_connect_timeout 60s;
        fastcgi_send_timeout 60s;
        fastcgi_buffer_size 128k;
        fastcgi_buffers 4 256k;
        fastcgi_busy_buffers_size 256k;
        fastcgi_keep_conn on;
        fastcgi_hide_header X-Powered-By;
    }

    # Deny access to hidden files
    location ~ /\.(?!well-known).* {
        deny all;
        access_log off;
        log_not_found off;
    }

    # Prevent PHP execution in uploads
    location ~* /(?:uploads|files)/.*\.php$ {
        deny all;
    }

    # Error pages
    error_page 404 /errors/404.html;
    error_page 403 /errors/403.html;
    error_page 500 502 503 504 /errors/50x.html;

    location /errors/ {
        internal;
    }

    server_tokens off;
}