# Enable rewrite engine
RewriteEngine On

# Set base directory
RewriteBase /

# Force HTTPS (uncomment in production)
# RewriteCond %{HTTPS} off
# RewriteRule ^(.*)$ https://%{HTTP_HOST}/$1 [R=301,L]

# Remove trailing slashes
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)/$ /$1 [L,R=301]

# Protect sensitive directories
RewriteRule ^(includes|config|templates|temp)/ - [F,L]

# Protect download directory
RewriteRule ^downloads/ - [F,L]

# Redirect API requests
RewriteRule ^api/(.*)$ api/index.php?endpoint=$1 [QSA,L]

# Pretty URLs for user pages
RewriteRule ^login$ users/login.php [L]
RewriteRule ^register$ users/register.php [L]
RewriteRule ^dashboard$ users/dashboard.php [L]
RewriteRule ^logout$ users/logout.php [L]
RewriteRule ^profile$ users/profile.php [L]
RewriteRule ^upgrade$ users/upgrade.php [L]

# Admin routes
RewriteRule ^admin$ admin/index.php [L]
RewriteRule ^admin/(.*)$ admin/$1 [L]

# Download route
RewriteRule ^download$ download.php [L]

# Error documents
ErrorDocument 404 /404.php
ErrorDocument 403 /403.php
ErrorDocument 500 /500.php

# Security headers
<IfModule mod_headers.c>
    Header set X-Content-Type-Options "nosniff"
    Header set X-Frame-Options "SAMEORIGIN"
    Header set X-XSS-Protection "1; mode=block"
    Header set Referrer-Policy "strict-origin-when-cross-origin"
</IfModule>

# Compression
<IfModule mod_deflate.c>
    AddOutputFilterByType DEFLATE text/html text/plain text/xml text/css text/javascript application/javascript application/json
</IfModule>

# Cache control
<IfModule mod_expires.c>
    ExpiresActive On
    ExpiresByType image/jpg "access plus 1 year"
    ExpiresByType image/jpeg "access plus 1 year"
    ExpiresByType image/gif "access plus 1 year"
    ExpiresByType image/png "access plus 1 year"
    ExpiresByType text/css "access plus 1 month"
    ExpiresByType application/javascript "access plus 1 month"
    ExpiresByType image/x-icon "access plus 1 year"
    ExpiresDefault "access plus 2 days"
</IfModule>

# Prevent access to .htaccess
<Files .htaccess>
    Order allow,deny
    Deny from all
</Files>

# Prevent access to sensitive files
<FilesMatch "\.(sql|log|ini|cfg|config|bak|backup)$">
    Order allow,deny
    Deny from all
</FilesMatch>

# Protect PHP files in includes directory
<FilesMatch "\.php$">
    Order Deny,Allow
    Deny from all
    Allow from 127.0.0.1
</FilesMatch>

<Files "index.php">
    Order Allow,Deny
    Allow from all
</Files>