# Nginx Configuration for LittleShop on Hostinger VPS
# Place this file in /etc/nginx/sites-available/littleshop
# Then link it: ln -s /etc/nginx/sites-available/littleshop /etc/nginx/sites-enabled/

# Upstream backend server
upstream littleshop_backend {
    server localhost:8080;
    keepalive 32;
}

# HTTP Server - Redirect to HTTPS
server {
    listen 80;
    listen [::]:80;
    server_name littleshop.silverlabs.uk thebankofdebbie.giize.com srv1002428.hstgr.cloud;

    # Redirect all HTTP traffic to HTTPS
    return 301 https://$server_name$request_uri;
}

# HTTPS Server
server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name littleshop.silverlabs.uk thebankofdebbie.giize.com srv1002428.hstgr.cloud;

    # SSL Configuration
    ssl_certificate /etc/letsencrypt/live/littleshop.silverlabs.uk/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/littleshop.silverlabs.uk/privkey.pem;

    # SSL Security Settings
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers HIGH:!aNULL:!MD5;
    ssl_prefer_server_ciphers off;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 1d;
    ssl_stapling on;
    ssl_stapling_verify on;

    # 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 Strict-Transport-Security "max-age=31536000; includeSubDomains" always;

    # Request size limits
    client_max_body_size 50M;
    client_body_buffer_size 128k;

    # Timeouts
    proxy_connect_timeout 60s;
    proxy_send_timeout 60s;
    proxy_read_timeout 60s;
    send_timeout 60s;

    # Logging
    access_log /var/log/nginx/littleshop_access.log combined;
    error_log /var/log/nginx/littleshop_error.log error;

    # Root location - Proxy to LittleShop
    location / {
        proxy_pass http://littleshop_backend;
        proxy_http_version 1.1;

        # Headers for proper forwarding
        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_set_header X-Forwarded-Host $host;
        proxy_set_header X-Forwarded-Port $server_port;

        # WebSocket support for SignalR/Blazor
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $http_connection;

        # Disable buffering for SSE/streaming
        proxy_buffering off;
        proxy_cache off;
    }

    # Static files (if needed)
    location /uploads {
        alias /opt/littleshop/wwwroot/uploads;
        expires 30d;
        add_header Cache-Control "public, immutable";
    }

    # Health check endpoint
    location /health {
        proxy_pass http://littleshop_backend/api/test/database;
        access_log off;
    }

    # SilverPAY webhook - allow without auth
    location /api/silverpay/webhook {
        proxy_pass http://littleshop_backend/api/silverpay/webhook;
        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;

        # Allow SilverPAY IPs only (add actual IPs)
        # allow 31.97.57.205;
        # deny all;
    }

    # Admin area - additional security
    location /Admin {
        proxy_pass http://littleshop_backend/Admin;
        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;

        # Optional: IP restrictions for admin area
        # allow 192.168.1.0/24;
        # allow 10.0.0.0/8;
        # deny all;
    }

    # Blazor SignalR hub
    location /_blazor {
        proxy_pass http://littleshop_backend/_blazor;
        proxy_http_version 1.1;

        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;

        # Important for SignalR
        proxy_buffering off;
        proxy_read_timeout 3600s;
        proxy_send_timeout 3600s;
    }

    # API documentation (Swagger)
    location /swagger {
        proxy_pass http://littleshop_backend/swagger;
        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;
    }
}