<?php

namespace App\RSpade\Commands\Rsx;

use Illuminate\Console\Command;
use App\RSpade\Core\Rsx;

/**
 * Set the application mode (development, debug, or production)
 *
 * Changes the RSX_MODE in .env, clears caches, and rebuilds as appropriate.
 */
class Mode_Set_Command extends Command
{
    protected $signature = 'rsx:mode:set
                            {mode : Mode to set (dev|development|debug|prod|production)}';

    protected $description = 'Set the application mode (development, debug, or production)';

    public function handle(): int
    {
        $mode = $this->argument('mode');

        // Normalize mode aliases
        $normalized = match (strtolower($mode)) {
            'dev', 'development' => Rsx::MODE_DEVELOPMENT,
            'debug' => Rsx::MODE_DEBUG,
            'prod', 'production' => Rsx::MODE_PRODUCTION,
            default => null,
        };

        if ($normalized === null) {
            $this->error("Invalid mode: {$mode}");
            $this->line('');
            $this->line('Valid modes:');
            $this->line('  dev, development  - Auto-rebuild, full debugging');
            $this->line('  debug             - Production optimizations with sourcemaps');
            $this->line('  prod, production  - Full optimization');

            return 1;
        }

        // Check current mode (for display purposes only - always rebuild)
        $current_mode = $this->_get_current_env_mode();
        if ($current_mode === $normalized) {
            $this->info("Rebuilding {$normalized} mode...");
        } else {
            $this->info("Switching to {$normalized} mode...");
        }
        $this->newLine();

        // Step 1: Update .env file
        $this->line('  [1/3] Updating .env...');
        $this->_update_env_mode($normalized);

        // Clear the cached mode so subsequent calls see the new value
        Rsx::clear_mode_cache();

        // Step 2: Clear all caches
        $this->line('  [2/3] Clearing caches...');

        // Clear Laravel caches by deleting files directly (avoids triggering Manifest::init)
        $this->_clear_laravel_caches();

        // Clear RSX caches directly (avoids triggering Manifest::init via artisan boot)
        $this->_clear_rsx_caches();

        // Step 3: Build appropriate assets
        $this->line('  [3/3] Building assets...');

        if ($normalized === Rsx::MODE_DEVELOPMENT) {
            // In development, pre-warm the bundle cache
            // Explicitly pass RSX_MODE to ensure subprocess uses correct mode
            passthru("RSX_MODE={$normalized} php artisan rsx:bundle:compile", $exit_code);
            if ($exit_code !== 0) {
                $this->warn('Bundle compilation had warnings, but continuing...');
            }
        } else {
            // In debug/production, run the production build
            // RSX_FORCE_BUILD allows manifest rebuild even in production mode
            // Explicitly pass RSX_MODE to ensure subprocess uses correct mode
            passthru("RSX_MODE={$normalized} RSX_FORCE_BUILD=1 php artisan rsx:prod:build", $exit_code);
            if ($exit_code !== 0) {
                $this->error('Production build failed');

                return 1;
            }
        }

        $this->newLine();
        $this->info("[OK] Switched to {$normalized} mode");

        return 0;
    }

    /**
     * Get current RSX_MODE from .env file (not from env() which may be cached)
     */
    private function _get_current_env_mode(): string
    {
        $env_path = base_path('.env');
        if (!file_exists($env_path)) {
            return Rsx::MODE_DEVELOPMENT;
        }

        $contents = file_get_contents($env_path);
        if (preg_match('/^RSX_MODE=(.*)$/m', $contents, $matches)) {
            return trim($matches[1]);
        }

        return Rsx::MODE_DEVELOPMENT;
    }

    /**
     * Update RSX_MODE in .env file
     */
    private function _update_env_mode(string $mode): void
    {
        $env_path = base_path('.env');

        if (!file_exists($env_path)) {
            // Create .env with just RSX_MODE
            file_put_contents($env_path, "RSX_MODE={$mode}\n");

            return;
        }

        $contents = file_get_contents($env_path);

        if (preg_match('/^RSX_MODE=.*$/m', $contents)) {
            // Replace existing RSX_MODE
            $contents = preg_replace('/^RSX_MODE=.*$/m', "RSX_MODE={$mode}", $contents);
        } else {
            // Add RSX_MODE after APP_DEBUG or APP_URL if they exist, otherwise at end
            if (preg_match('/^APP_DEBUG=.*$/m', $contents)) {
                $contents = preg_replace(
                    '/^(APP_DEBUG=.*)$/m',
                    "$1\nRSX_MODE={$mode}",
                    $contents,
                    1
                );
            } elseif (preg_match('/^APP_URL=.*$/m', $contents)) {
                $contents = preg_replace(
                    '/^(APP_URL=.*)$/m',
                    "$1\nRSX_MODE={$mode}",
                    $contents,
                    1
                );
            } else {
                // Append to end
                $contents = rtrim($contents) . "\nRSX_MODE={$mode}\n";
            }
        }

        file_put_contents($env_path, $contents);
    }

    /**
     * Clear Laravel caches by deleting files directly
     * (Avoids running artisan commands which trigger Manifest::init)
     */
    private function _clear_laravel_caches(): void
    {
        $bootstrap_cache = base_path('bootstrap/cache');

        // Config cache
        $config_cache = "{$bootstrap_cache}/config.php";
        if (file_exists($config_cache)) {
            unlink($config_cache);
        }

        // Route cache
        $route_cache = "{$bootstrap_cache}/routes-v7.php";
        if (file_exists($route_cache)) {
            unlink($route_cache);
        }

        // Services cache
        $services_cache = "{$bootstrap_cache}/services.php";
        if (file_exists($services_cache)) {
            unlink($services_cache);
        }

        // Packages cache
        $packages_cache = "{$bootstrap_cache}/packages.php";
        if (file_exists($packages_cache)) {
            unlink($packages_cache);
        }

        // Compiled views
        $views_path = storage_path('framework/views');
        if (is_dir($views_path)) {
            $files = glob("{$views_path}/*.php");
            foreach ($files as $file) {
                unlink($file);
            }
        }
    }

    /**
     * Clear RSX caches by deleting directories directly
     * (Avoids running artisan commands which trigger Manifest::init)
     */
    private function _clear_rsx_caches(): void
    {
        // Clear rsx-build directory
        $build_path = storage_path('rsx-build');
        if (is_dir($build_path)) {
            $this->_clear_directory_contents($build_path);
        }

        // Clear rsx-tmp directory
        $tmp_path = storage_path('rsx-tmp');
        if (is_dir($tmp_path)) {
            $this->_clear_directory_contents($tmp_path);
        }
    }

    /**
     * Recursively clear directory contents
     */
    private function _clear_directory_contents(string $path): void
    {
        if (!is_dir($path)) {
            return;
        }

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

        foreach ($files as $file) {
            if ($file->isDir()) {
                rmdir($file->getRealPath());
            } else {
                unlink($file->getRealPath());
            }
        }
    }
}