worker_processes auto;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;

events {
    worker_connections 1024;
    use epoll;
    multi_accept on;
}

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

    log_format main '$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 main;

    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
    types_hash_max_size 2048;

    # Gzip compression
    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_types text/plain text/css text/xml application/json application/javascript application/xml+rss application/atom+xml image/svg+xml;

    server {
        listen 80;
        server_name _;
        root /usr/share/nginx/html;
        index index.html;

        # Security headers
        add_header X-Frame-Options "SAMEORIGIN" always;
        add_header X-Content-Type-Options "nosniff" always;
        add_header X-XSS-Protection "1; mode=block" always;
        add_header Referrer-Policy "strict-origin-when-cross-origin" always;

        # Cache static assets
        location ~* \.(jpg|jpeg|png|gif|ico|svg|webp|woff|woff2|ttf|eot)$ {
            expires 1y;
            add_header Cache-Control "public, immutable";
        }

        location ~* \.(css|js)$ {
            expires 1M;
            add_header Cache-Control "public";
        }

        # Config files should not be cached long
        location /config/ {
            expires 5m;
            add_header Cache-Control "public, must-revalidate";
        }

        # Admin dashboard
        location /dashboard {
            try_files $uri /dashboard.html;
        }

        # SPA fallback
        location / {
            try_files $uri $uri/ /index.html;
        }

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

        # Proxy for Immich share pages (to avoid CORS issues)
        # Usage: /api/immich-proxy?url=https://photography.lisilou.com/s/albumId
        location /api/immich-proxy {
            internal;
            resolver 8.8.8.8 1.1.1.1 valid=300s;
            resolver_timeout 5s;

            set $target_url $arg_url;
            proxy_pass $target_url;
            proxy_set_header Host $proxy_host;
            proxy_set_header Accept "text/html";
            proxy_ssl_server_name on;
        }

        # Booking API — proxy to Node.js service
        # Immich regex locations above take priority for /api/immich-proxy and /api/fetch-immich/
        location /api/ {
            proxy_pass http://api:3001;
            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_read_timeout 30s;
        }

        # Proxy endpoint for Immich share pages and API
        location ~ ^/api/fetch-immich/(.+)$ {
            resolver 8.8.8.8 1.1.1.1 valid=300s;
            resolver_timeout 5s;

            set $immich_path $1;
            set $immich_host photography.lisilou.com;
            proxy_pass https://$immich_host/$immich_path$is_args$args;
            proxy_set_header Host $immich_host;
            proxy_ssl_server_name on;
            proxy_ssl_protocols TLSv1.2 TLSv1.3;
        }
    }
}