# AntURL - URL Shortener .htaccess Configuration

# Enable rewrite engine
RewriteEngine On

# Force HTTPS (uncomment for production)
# RewriteCond %{HTTPS} off
# RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

# Handle short URL redirects
# This will catch any 6-character alphanumeric code and redirect to redirect.php
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([a-zA-Z0-9]{6})/?$ redirect.php [L,QSA]

# Prevent direct access to sensitive files
<Files "db.php">
    Order allow,deny
    Deny from all
</Files>

<Files "database.sql">
    Order allow,deny
    Deny from all
</Files>

# Security headers
<IfModule mod_headers.c>
    # Prevent clickjacking
    Header always set X-Frame-Options "SAMEORIGIN"
    
    # Prevent MIME type sniffing
    Header always set X-Content-Type-Options "nosniff"
    
    # Enable XSS protection
    Header always set X-XSS-Protection "1; mode=block"
    
    # Referrer policy
    Header always set Referrer-Policy "strict-origin-when-cross-origin"
</IfModule>

# Compression
<IfModule mod_deflate.c>
    AddOutputFilterByType DEFLATE text/plain
    AddOutputFilterByType DEFLATE text/html
    AddOutputFilterByType DEFLATE text/xml
    AddOutputFilterByType DEFLATE text/css
    AddOutputFilterByType DEFLATE application/xml
    AddOutputFilterByType DEFLATE application/xhtml+xml
    AddOutputFilterByType DEFLATE application/rss+xml
    AddOutputFilterByType DEFLATE application/javascript
    AddOutputFilterByType DEFLATE application/x-javascript
</IfModule>

# Browser caching
<IfModule mod_expires.c>
    ExpiresActive on
    ExpiresByType text/css "access plus 1 month"
    ExpiresByType application/javascript "access plus 1 month"
    ExpiresByType image/png "access plus 1 month"
    ExpiresByType image/jpg "access plus 1 month"
    ExpiresByType image/jpeg "access plus 1 month"
    ExpiresByType image/gif "access plus 1 month"
    ExpiresByType image/svg+xml "access plus 1 month"
</IfModule>

# Disable server signature
ServerSignature Off

# Custom error pages (optional)
# ErrorDocument 404 /404.html
# ErrorDocument 500 /500.html