<?php

namespace App\RSpade\Commands\Rsx;

use Illuminate\Console\Command;
use RecursiveDirectoryIterator;
use RecursiveIteratorIterator;

/**
 * Export the application for deployment
 *
 * Runs rsx:prod:build then copies all necessary files to an export directory.
 * The export can be deployed to production servers.
 */
class Prod_Export_Command extends Command
{
    protected $signature = 'rsx:prod:export
                            {--path=./rsx-export : Export destination directory}
                            {--skip-build : Skip running rsx:prod:build (use existing assets)}';

    protected $description = 'Export application for deployment';

    public function handle(): int
    {
        $export_path = $this->option('path');

        // Resolve relative path from base_path parent (since we're in /system)
        if (str_starts_with($export_path, './')) {
            $export_path = dirname(base_path()) . '/' . substr($export_path, 2);
        } elseif (!str_starts_with($export_path, '/')) {
            $export_path = dirname(base_path()) . '/' . $export_path;
        }

        $this->info('Exporting application for deployment...');
        $this->line("  Destination: {$export_path}");
        $this->newLine();

        // Step 1: Run production build (unless --skip-build)
        if (!$this->option('skip-build')) {
            $this->line('[1/3] Running production build...');
            passthru('php artisan rsx:prod:build', $exit_code);
            if ($exit_code !== 0) {
                $this->error('Production build failed');

                return 1;
            }
            $this->newLine();
        } else {
            $this->line('[1/3] Skipping production build (--skip-build)');
        }

        // Step 2: Prepare export directory
        $this->line('[2/3] Preparing export directory...');

        // Clear existing export if it exists
        if (is_dir($export_path)) {
            $this->line('      Clearing existing export...');
            $this->_clear_directory($export_path);
        }

        // Create export directory
        if (!mkdir($export_path, 0755, true) && !is_dir($export_path)) {
            $this->error("Failed to create export directory: {$export_path}");

            return 1;
        }

        // Step 3: Copy files
        $this->line('[3/3] Copying files...');

        $base = dirname(base_path()); // Parent of /system
        $copied_files = 0;
        $copied_dirs = 0;

        // Directories to copy
        $dirs_to_copy = [
            'system' => 'system',
            'rsx' => 'rsx',
            'node_modules' => 'node_modules',
            'vendor' => 'vendor',
        ];

        // Also include rsx-build from storage
        $storage_rsx_build = base_path('storage/rsx-build');
        if (is_dir($storage_rsx_build)) {
            $dirs_to_copy['system/storage/rsx-build'] = 'system/storage/rsx-build';
        }

        foreach ($dirs_to_copy as $src_rel => $dest_rel) {
            $src = "{$base}/{$src_rel}";
            $dest = "{$export_path}/{$dest_rel}";

            if (!is_dir($src)) {
                $this->warn("      Skipping {$src_rel} (not found)");
                continue;
            }

            $this->line("      Copying {$src_rel}/...");
            $count = $this->_copy_directory($src, $dest, $src_rel);
            $copied_files += $count;
            $copied_dirs++;
        }

        // Copy *.json files from root
        $json_files = glob("{$base}/*.json");
        foreach ($json_files as $json_file) {
            $filename = basename($json_file);
            copy($json_file, "{$export_path}/{$filename}");
            $copied_files++;
        }
        if (!empty($json_files)) {
            $this->line('      Copying *.json files...');
        }

        // Create .gitignore for export directory
        file_put_contents(
            "{$export_path}/.gitignore",
            "# This export should not be committed to version control\n*\n"
        );

        $this->newLine();
        $this->info("[OK] Export complete");
        $this->line("     {$copied_dirs} directories, {$copied_files} files");
        $this->line("     Location: {$export_path}");
        $this->newLine();
        $this->line('Next steps:');
        $this->line('  1. Copy the export directory to your production server');
        $this->line('  2. Configure .env on the production server');
        $this->line('  3. Point your web server to the deployment');

        return 0;
    }

    /**
     * Copy a directory recursively, excluding certain paths
     */
    private function _copy_directory(string $src, string $dest, string $rel_path): int
    {
        // Paths to exclude (relative to source)
        $exclude_patterns = [
            '.env',
            '.env.example',
            'storage/app',
            'storage/logs',
            'storage/framework/cache',
            'storage/framework/sessions',
            'storage/framework/views',
            'storage/rsx-tmp',
            'rsx-export',
            '.git',
            '.idea',
            '.vscode',
            'tests',
        ];

        // For system directory, exclude additional paths
        if ($rel_path === 'system') {
            $exclude_patterns[] = 'storage/rsx-tmp';
        }

        if (!is_dir($dest)) {
            mkdir($dest, 0755, true);
        }

        $copied = 0;
        $iterator = new RecursiveIteratorIterator(
            new RecursiveDirectoryIterator($src, RecursiveDirectoryIterator::SKIP_DOTS),
            RecursiveIteratorIterator::SELF_FIRST
        );

        foreach ($iterator as $item) {
            $sub_path = $iterator->getSubPathname();

            // Check exclusions
            $skip = false;
            foreach ($exclude_patterns as $pattern) {
                if (str_starts_with($sub_path, $pattern) || str_contains($sub_path, "/{$pattern}")) {
                    $skip = true;
                    break;
                }
            }

            if ($skip) {
                continue;
            }

            $dest_path = "{$dest}/{$sub_path}";

            if ($item->isDir()) {
                if (!is_dir($dest_path)) {
                    mkdir($dest_path, 0755, true);
                }
            } else {
                // Ensure parent directory exists
                $parent = dirname($dest_path);
                if (!is_dir($parent)) {
                    mkdir($parent, 0755, true);
                }
                copy($item->getPathname(), $dest_path);
                $copied++;
            }
        }

        return $copied;
    }

    /**
     * Clear a directory recursively
     */
    private function _clear_directory(string $path): void
    {
        if (!is_dir($path)) {
            return;
        }

        $iterator = new RecursiveIteratorIterator(
            new RecursiveDirectoryIterator($path, RecursiveDirectoryIterator::SKIP_DOTS),
            RecursiveIteratorIterator::CHILD_FIRST
        );

        foreach ($iterator as $item) {
            if ($item->isDir()) {
                rmdir($item->getPathname());
            } else {
                unlink($item->getPathname());
            }
        }

        rmdir($path);
    }
}