#!/bin/bash

# Script to fix nginx 413 error by increasing client_max_body_size
# This script updates nginx configuration on the server for all domains
# including Forgejo (git push), VSCode, and web apps

set -e

SERVER_IP="147.45.152.129"
SERVER_USER="root"
MAX_SIZE="1000M"

echo "🔧 Fixing nginx upload limit (413 error) on server..."

ssh "$SERVER_USER@$SERVER_IP" << 'EOF'
    set -e
    
    echo "📝 Checking current nginx configurations..."
    
    # Update global nginx config
    if ! grep -q "client_max_body_size" /etc/nginx/nginx.conf; then
        echo "Adding client_max_body_size to global nginx config..."
        sed -i '/http {/a\    client_max_body_size 1000M;' /etc/nginx/nginx.conf
    else
        echo "Updating existing client_max_body_size in global config..."
        sed -i 's/client_max_body_size.*$/client_max_body_size 1000M;/' /etc/nginx/nginx.conf
    fi
    
    # Update all site configs in sites-available
    echo "Updating all site configurations..."
    for conf in /etc/nginx/sites-available/*; do
        if [ -f "$conf" ]; then
            echo "Processing: $conf"
            
            # Remove all existing client_max_body_size lines to avoid duplicates
            sed -i '/client_max_body_size/d' "$conf"
            
            # Add client_max_body_size once in each server block (after first server_name)
            # Use awk to add only once per server block
            awk '
            /server \{/ { in_server=1; added=0 }
            /\}/ && in_server { in_server=0 }
            { print }
            /server_name/ && in_server && !added { 
                print "    client_max_body_size 1000M;"
                added=1
            }
            ' "$conf" > "$conf.tmp" && mv "$conf.tmp" "$conf"
        fi
    done
    
    echo "🧪 Testing nginx configuration..."
    /usr/sbin/nginx -t
    
    if [ $? -eq 0 ]; then
        echo "✅ Nginx configuration is valid"
        echo "🔄 Reloading nginx..."
        /usr/bin/systemctl reload nginx
        echo "✅ Nginx reloaded successfully"
        
        echo ""
        echo "📊 Summary:"
        echo "  - client_max_body_size set to 1000M globally"
        echo "  - All site configurations updated"
        echo "  - Git push should now work without 413 errors"
        echo ""
        echo "Current client_max_body_size in configs:"
        grep -r "client_max_body_size" /etc/nginx/ 2>/dev/null | grep -v ".default" || echo "  (checking...)"
    else
        echo "❌ Nginx configuration test failed"
        exit 1
    fi
EOF

echo ""
echo "✅ Done! Git push should now work without 413 errors."
echo "💡 If you still get 413, try increasing MAX_SIZE in this script."