<?php

namespace App\Livewire\Settings;

use App\Models\InstanceSettings as ModelsInstanceSettings;
use App\Models\Server;
use Livewire\Component;
use Cron\CronExpression;

class Configuration extends Component
{
    public ModelsInstanceSettings $settings;

    public bool $do_not_track;

    public bool $is_auto_update_enabled;

    public bool $is_registration_enabled;

    public bool $is_dns_validation_enabled;

    public bool $is_api_enabled;

    public string $auto_update_frequency;

    public string $update_check_frequency;

    protected string $dynamic_config_path = '/data/coolify/proxy/dynamic';

    protected Server $server;

    protected $rules = [
        'settings.fqdn' => 'nullable',
        'settings.resale_license' => 'nullable',
        'settings.public_port_min' => 'required',
        'settings.public_port_max' => 'required',
        'settings.custom_dns_servers' => 'nullable',
        'settings.instance_name' => 'nullable',
        'settings.allowed_ips' => 'nullable',
        'settings.is_auto_update_enabled' => 'boolean',
        'auto_update_frequency' => 'nullable|string',
        'update_check_frequency' => 'nullable|string',
    ];

    protected $validationAttributes = [
        'settings.fqdn' => 'FQDN',
        'settings.resale_license' => 'Resale License',
        'settings.public_port_min' => 'Public port min',
        'settings.public_port_max' => 'Public port max',
        'settings.custom_dns_servers' => 'Custom DNS servers',
        'settings.allowed_ips' => 'Allowed IPs',
        'settings.is_auto_update_enabled' => 'Auto Update Enabled',
        'auto_update_frequency' => 'Auto Update Frequency',
        'update_check_frequency' => 'Update Check Frequency',
    ];

    public function mount()
    {
        $this->do_not_track = $this->settings->do_not_track;
        $this->is_auto_update_enabled = $this->settings->is_auto_update_enabled;
        $this->is_registration_enabled = $this->settings->is_registration_enabled;
        $this->is_dns_validation_enabled = $this->settings->is_dns_validation_enabled;
        $this->is_api_enabled = $this->settings->is_api_enabled;
        $this->auto_update_frequency = $this->settings->auto_update_frequency;
        $this->update_check_frequency = $this->settings->update_check_frequency;
    }

    public function instantSave()
    {
        $this->settings->do_not_track = $this->do_not_track;
        $this->settings->is_auto_update_enabled = $this->is_auto_update_enabled;
        $this->settings->is_registration_enabled = $this->is_registration_enabled;
        $this->settings->is_dns_validation_enabled = $this->is_dns_validation_enabled;
        $this->settings->is_api_enabled = $this->is_api_enabled;
        $this->settings->auto_update_frequency = $this->auto_update_frequency;
        $this->settings->update_check_frequency = $this->update_check_frequency;
        $this->settings->save();
        $this->dispatch('success', 'Settings updated!');
    }

    public function submit()
    {
        try {
            $error_show = false;
            $this->server = Server::findOrFail(0);
            $this->resetErrorBag();
            if ($this->settings->public_port_min > $this->settings->public_port_max) {
                $this->addError('settings.public_port_min', 'The minimum port must be lower than the maximum port.');

                return;
            }
            $this->validate();

            if ($this->is_auto_update_enabled && !$this->validateCronExpression($this->auto_update_frequency)) {
                $this->dispatch('error', 'Invalid Cron / Human expression for Auto Update Frequency.');
                return;
            }

            if (!$this->validateCronExpression($this->update_check_frequency)) {
                $this->dispatch('error', 'Invalid Cron / Human expression for Update Check Frequency.');
                return;
            }

            if ($this->settings->is_dns_validation_enabled && $this->settings->fqdn) {
                if (! validate_dns_entry($this->settings->fqdn, $this->server)) {
                    $this->dispatch('error', "Validating DNS failed.<br><br>Make sure you have added the DNS records correctly.<br><br>{$this->settings->fqdn}->{$this->server->ip}<br><br>Check this <a target='_blank' class='underline dark:text-white' href='https://coolify.io/docs/knowledge-base/dns-configuration'>documentation</a> for further help.");
                    $error_show = true;
                }
            }
            if ($this->settings->fqdn) {
                check_domain_usage(domain: $this->settings->fqdn);
            }
            $this->settings->custom_dns_servers = str($this->settings->custom_dns_servers)->replaceEnd(',', '')->trim();
            $this->settings->custom_dns_servers = str($this->settings->custom_dns_servers)->trim()->explode(',')->map(function ($dns) {
                return str($dns)->trim()->lower();
            });
            $this->settings->custom_dns_servers = $this->settings->custom_dns_servers->unique();
            $this->settings->custom_dns_servers = $this->settings->custom_dns_servers->implode(',');

            $this->settings->allowed_ips = str($this->settings->allowed_ips)->replaceEnd(',', '')->trim();
            $this->settings->allowed_ips = str($this->settings->allowed_ips)->trim()->explode(',')->map(function ($ip) {
                return str($ip)->trim();
            });
            $this->settings->allowed_ips = $this->settings->allowed_ips->unique();
            $this->settings->allowed_ips = $this->settings->allowed_ips->implode(',');

            $this->settings->do_not_track = $this->do_not_track;
            $this->settings->is_auto_update_enabled = $this->is_auto_update_enabled;
            $this->settings->is_registration_enabled = $this->is_registration_enabled;
            $this->settings->is_dns_validation_enabled = $this->is_dns_validation_enabled;
            $this->settings->is_api_enabled = $this->is_api_enabled;
            $this->settings->auto_update_frequency = $this->auto_update_frequency;
            $this->settings->update_check_frequency = $this->update_check_frequency;
            $this->settings->save();
            $this->server->setupDynamicProxyConfiguration();
            if (! $error_show) {
                $this->dispatch('success', 'Instance settings updated successfully!');
            }
        } catch (\Exception $e) {
            return handleError($e, $this);
        }
    }

    private function validateCronExpression($expression): bool
    {
        if (empty($expression)) {
            return true;
        }
        $isValid = false;
        try {
            $cronExpression = new CronExpression($expression);
            $isValid = $cronExpression->getNextRunDate() !== false;
        } catch (\Exception $e) {
            $isValid = false;
        }

        if (isset(VALID_CRON_STRINGS[$expression])) {
            $isValid = true;
        }

        return $isValid;
    }

    public function updatedAutoUpdateFrequency()
    {
        if (!$this->validateCronExpression($this->auto_update_frequency)) {
            $this->dispatch('error', 'Invalid Cron / Human expression for Auto Update Frequency.');
        }
    }

    public function updatedUpdateCheckFrequency()
    {
        if (!$this->validateCronExpression($this->update_check_frequency)) {
            $this->dispatch('error', 'Invalid Cron / Human expression for Update Check Frequency.');
        }
    }
}