#!/bin/sh

# Configure nginx.conf based on APP_SUBFOLDER environment variable
# This script modifies the existing nginx.conf for subfolder deployments

CONFIG_FILE="/etc/nginx/nginx.conf"

echo "Starting nginx configuration..."
echo "APP_SUBFOLDER: $APP_SUBFOLDER"
echo "Config file: $CONFIG_FILE"

if [ -n "$APP_SUBFOLDER" ]; then
    echo "Configuring nginx for subfolder deployment: /$APP_SUBFOLDER/"
    
    # Add simple subfolder location for SPA routing (static assets already handled globally)
    sed -i "s|# SUBFOLDER_PLACEHOLDER|        location /$APP_SUBFOLDER/ { try_files \$uri \$uri/ /$APP_SUBFOLDER/index.html; }|g" "$CONFIG_FILE"
    
else
    echo "Configuring nginx for root deployment"
    # Remove placeholder for root deployment
    sed -i '/# SUBFOLDER_PLACEHOLDER/d' "$CONFIG_FILE"
fi

echo "Nginx configuration generated successfully"

# Debug: show configured nginx.conf structure and first few lines
echo "Configured nginx.conf structure:"
head -10 "$CONFIG_FILE"
echo "..."
grep -E "^(events|http|server)" "$CONFIG_FILE" || echo "Warning: Missing main sections"

# Verify file size
echo "Final file size: $(wc -c < "$CONFIG_FILE") bytes"