<?php

namespace App\Livewire;

use App\Bots\BotContract;
use App\Models\Bot;
use Cron\CronExpression;
use Illuminate\Support\Arr;
use Illuminate\Support\Facades\File;
use Illuminate\Support\Facades\URL;
use Illuminate\Validation\Rule;
use Livewire\Component;
use Lorisleiva\CronTranslator\CronParsingException;
use Lorisleiva\CronTranslator\CronTranslator;

class CreateEditBot extends Component
{
    public ?Bot $bot = null;

    public string $name = '';

    public string $class = '';

    public string $schedule = '* * * * *';

    public bool $enabled = true;

    public string $cron_text = 'Every minute';

    public array $config = [];

    public array $classList = [];

    public array $configSchema = [];

    public string $routeName = '';

    public function mount()
    {
        $this->routeName = URL::current() === route('bots.create') ? 'Create Bot' : 'Edit Bot';

        if ($this->bot) {
            $this->name = $this->bot->name;
            $this->class = $this->bot->class;
            $this->config = $this->bot->config ?? [];
            $this->schedule = $this->bot->schedule;
            $this->enabled = $this->bot->enabled;
            $this->cron_text = CronTranslator::translate($this->bot->schedule);
            $this->configSchema = $this->bot->class::configSchema();
        }

        $basePath = $basePath ?? app_path('Bots');
        $baseNamespace = $baseNamespace ?? 'App\\Bots';

        foreach (File::allFiles($basePath) as $file) {
            // Convert file path → class name
            $relativePath = str_replace([$basePath . DIRECTORY_SEPARATOR, '.php'], '', $file->getPathname());
            $relativeNamespace = str_replace(DIRECTORY_SEPARATOR, '\\', $relativePath);
            $class = $baseNamespace . '\\' . $relativeNamespace;

            // Make sure class exists and implements BotContract
            if (class_exists($class) && in_array(BotContract::class, class_implements($class))) {
                $label = method_exists($class, 'label')
                    ? $class::label()
                    : class_basename($class);

                $this->classList[$class] = $label;
            }
        }
    }

    public function updatedClass($value)
    {
        $this->configSchema = $this->class::configSchema();
    }

    protected function rules(): array
    {
        $schemaRules = [];

        foreach ($this->configSchema as $field => $meta) {
            $schemaRules["config.$field"] = $meta['rules'] ?? [];
        }

        return array_merge([
            'name' => [
                'required',
                'string',
                'max:255',
                Rule::unique('bots', 'name')->ignore($this->name, 'name'),
            ],
            'class' => [
                'required',
                'string',
                'max:255',
            ],
            'schedule' => [
                'required',
                'string',
                'max:255',
                function ($attribute, $value, $fail) {
                    if (!CronExpression::isValidExpression($value)) {
                        $fail('The ' . $attribute . ' is not a valid cron expression.');
                    }
                },
            ],
            'enabled' => ['boolean'],
        ], $schemaRules);
    }

    public function save(): void
    {
        $this->validate();

        if (!class_exists($this->class)) {
            $this->addError('class', 'The specified class does not exist.');
            return;
        }

        if (!in_array(\App\Bots\BotContract::class, class_implements($this->class))) {
            $this->addError('class', 'The specified class does not exist.');
            return;
        }

        if ($this->routeName !==  'Create Bot') {
            $this->bot->update([
                'name' => $this->name,
                'class' => $this->class,
                'enabled' => $this->enabled,
                'schedule' => $this->schedule,
                'config' => $this->config,
            ]);

            flash()->success('Bot updated successfully.');

            return;
        } else {
            \App\Models\Bot::create([
                'name' => $this->name,
                'class' => $this->class,
                'enabled' => $this->enabled,
                'schedule' => $this->schedule,
                'config' => $this->config,
            ]);
        }

        flash()->success('Bot created successfully.');

        $this->reset(['name', 'class', 'enabled', 'schedule', 'config', 'configSchema']);
    }

    public function updatedSchedule($value)
    {
        try {
            $this->cron_text = CronTranslator::translate($value);
            $this->resetErrorBag('schedule');
        } catch (CronParsingException $e) {
            $this->cron_text = '';
        }
    }

    protected function validationAttributes(): array
    {
        $attributes = [];

        foreach ($this->configSchema as $field => $meta) {
            $attributes["config.$field"] = $meta['label'];
        }

        $attributes['name'] = 'Bot Name';
        $attributes['schedule'] = 'Schedule';
        $attributes['class'] = 'Bot Schema';

        return $attributes;
    }

    public function prettify(string $field): void
    {
        if (isset($this->config[$field])) {
            if (json_validate($this->config[$field])) {
                $decoded = json_decode($this->config[$field], true);
                $this->config[$field] = json_encode($decoded, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
                $this->resetErrorBag("config.$field");
            } else {
                $this->addError("config.$field", 'Invalid JSON format.');
            }
        }
    }

    public function render()
    {
        return view('livewire.create-edit-bot');
    }
}