<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;
use Illuminate\Support\Facades\Artisan;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Route;
use Illuminate\Support\Facades\Schema;
use JsonException;
use Throwable;

class ReleaseAuditCommand extends Command
{
    protected $signature = 'release:audit
        {--production : Apply production-readiness checks}
        {--fail-on-warning : Return a failure exit code when warnings exist}';

    protected $description = 'Audit Content Manager for v1.0 release readiness';

    /** @var array<int, string> */
    private array $failures = [];

    /** @var array<int, string> */
    private array $warnings = [];

    public function handle(): int
    {
        $this->components->info('Content Manager '.config('release.version').' release audit');

        $this->checkApplication();
        $this->checkDatabase();
        $this->checkModules();
        $this->checkRoutes();
        $this->checkProductionConfiguration();

        $this->newLine();

        foreach ($this->warnings as $warning) {
            $this->components->warn($warning);
        }

        foreach ($this->failures as $failure) {
            $this->components->error($failure);
        }

        if ($this->failures !== []) {
            $this->components->error(sprintf(
                'Release audit failed with %d error(s) and %d warning(s).',
                count($this->failures),
                count($this->warnings),
            ));

            return self::FAILURE;
        }

        if ($this->option('fail-on-warning') && $this->warnings !== []) {
            $this->components->error('Release audit contains warnings and --fail-on-warning was supplied.');

            return self::FAILURE;
        }

        $this->components->success(sprintf(
            'Release audit passed with %d warning(s).',
            count($this->warnings),
        ));

        return self::SUCCESS;
    }

    private function checkApplication(): void
    {
        $this->check((bool) config('app.key'), 'Application key is configured.');
        $this->check(is_writable(storage_path()), 'Storage directory is writable.');
        $this->check(is_writable(base_path('bootstrap/cache')), 'Bootstrap cache directory is writable.');

        try {
            Artisan::call('about', ['--only' => 'environment']);
            $this->recordPass('Laravel boots successfully.');
        } catch (Throwable $exception) {
            $this->recordFailure('Laravel failed to boot: '.$exception->getMessage());
        }
    }

    private function checkDatabase(): void
    {
        try {
            DB::connection()->getPdo();
            $this->recordPass('Database connection is available.');
        } catch (Throwable $exception) {
            $this->recordFailure('Database connection failed: '.$exception->getMessage());

            return;
        }

        if (! Schema::hasTable('migrations')) {
            $this->recordFailure('The migrations table does not exist.');

            return;
        }

        try {
            Artisan::call('migrate:status', ['--no-interaction' => true]);
            $output = Artisan::output();

            if (str_contains($output, 'Pending')) {
                $this->recordFailure('One or more database migrations are pending.');
            } else {
                $this->recordPass('No pending database migrations were detected.');
            }
        } catch (Throwable $exception) {
            $this->recordFailure('Migration status check failed: '.$exception->getMessage());
        }
    }

    private function checkModules(): void
    {
        $modulePath = base_path('Modules');

        if (! is_dir($modulePath)) {
            $this->recordFailure('Modules directory is missing.');

            return;
        }

        $available = [];

        foreach (glob($modulePath.'/*/module.json') ?: [] as $manifest) {
            try {
                $data = json_decode((string) file_get_contents($manifest), true, 512, JSON_THROW_ON_ERROR);
                $name = $data['name'] ?? basename(dirname($manifest));
                $available[] = $name;
                $this->recordPass("Module manifest is valid: {$name}.");
            } catch (JsonException $exception) {
                $this->recordFailure(sprintf('Invalid module manifest %s: %s', $manifest, $exception->getMessage()));
            }
        }

        foreach (config('release.required_modules', []) as $required) {
            if (! in_array($required, $available, true)) {
                $this->recordWarning("Expected module is not present: {$required}.");
            }
        }
    }

    private function checkRoutes(): void
    {
        try {
            $routes = Route::getRoutes();
            $names = [];

            foreach ($routes as $route) {
                $name = $route->getName();

                if ($name === null || trim($name) === '' || str_ends_with($name, '.')) {
                    continue;
                }

                if (isset($names[$name])) {
                    $this->recordFailure("Duplicate named route detected: {$name}.");
                }

                $names[$name] = true;
            }

            $this->recordPass(sprintf('Route registry loaded with %d route(s).', count($routes)));
        } catch (Throwable $exception) {
            $this->recordFailure('Route audit failed: '.$exception->getMessage());
        }
    }

    private function checkProductionConfiguration(): void
    {
        if (! $this->option('production')) {
            return;
        }

        $this->check(app()->environment('production'), 'APP_ENV is production.');
        $this->check(config('app.debug') === false, 'APP_DEBUG is disabled.');
        $this->check(config('app.url') !== null, 'APP_URL is configured.');
        $this->check(config('session.secure') === true, 'Secure session cookies are enabled.', warning: true);
        $this->check(config('marketplace.allow_remote_install', false) === false, 'Remote marketplace installation is disabled.', warning: true);
        $this->check(config('cloud-devops.allow_execution', false) === false, 'Cloud deployment execution is disabled until explicitly configured.', warning: true);
    }

    private function check(bool $condition, string $message, bool $warning = false): void
    {
        if ($condition) {
            $this->recordPass($message);

            return;
        }

        $warning ? $this->recordWarning($message) : $this->recordFailure($message);
    }

    private function recordPass(string $message): void
    {
        $this->components->twoColumnDetail($message, '<fg=green>PASS</>');
    }

    private function recordWarning(string $message): void
    {
        $this->warnings[] = $message;
    }

    private function recordFailure(string $message): void
    {
        $this->failures[] = $message;
    }
}