<?php
/**
 * @link https://craftcms.com/
 * @copyright Copyright (c) Pixel & Tonic, Inc.
 * @license https://craftcms.github.io/license/
 */

namespace craft\fields;

use Craft;
use craft\base\CrossSiteCopyableFieldInterface;
use craft\base\DefaultableFieldInterface;
use craft\base\ElementInterface;
use craft\base\Field;
use craft\base\InlineEditableFieldInterface;
use craft\base\MergeableFieldInterface;
use craft\base\SortableFieldInterface;
use craft\elements\Entry;
use craft\enums\Color as ColorEnum;
use craft\fields\conditions\LightswitchFieldConditionRule;
use craft\helpers\ArrayHelper;
use craft\helpers\Cp;
use craft\helpers\Db;
use craft\helpers\Html;
use GraphQL\Type\Definition\Type;
use yii\db\Schema;

/**
 * Lightswitch represents a Lightswitch field.
 *
 * @author Pixel & Tonic, Inc. <support@pixelandtonic.com>
 * @since 3.0.0
 */
class Lightswitch extends Field implements
    InlineEditableFieldInterface,
    SortableFieldInterface,
    MergeableFieldInterface,
    CrossSiteCopyableFieldInterface,
    DefaultableFieldInterface
{
    /**
     * @inheritdoc
     */
    public static function displayName(): string
    {
        return Craft::t('app', 'Lightswitch');
    }

    /**
     * @inheritdoc
     */
    public static function icon(): string
    {
        return 'toggle-on';
    }

    /**
     * @inheritdoc
     */
    public static function isRequirable(): bool
    {
        return false;
    }

    /**
     * @inheritdoc
     */
    public static function phpType(): string
    {
        return 'bool';
    }

    /**
     * @inheritdoc
     */
    public static function dbType(): string
    {
        return Schema::TYPE_BOOLEAN;
    }

    /**
     * @inheritdoc
     */
    public static function queryCondition(array $instances, mixed $value, array &$params): array
    {
        $valueSql = static::valueSql($instances);
        $strict = false;

        if (is_array($value) && isset($value['value'])) {
            $strict = $value['strict'] ?? $strict;
            $value = $value['value'];
        }

        $defaultValue = $strict ? null : $instances[0]->default;
        return Db::parseBooleanParam($valueSql, $value, $defaultValue, Schema::TYPE_JSON);
    }

    /**
     * @var bool Whether the lightswitch should be enabled by default
     */
    public bool $default = false;

    /**
     * @var string|null The label text to display beside the lightswitch’s enabled state
     * @since 3.5.4
     */
    public ?string $onLabel = null;

    /**
     * @var string|null The label text to display beside the lightswitch’s disabled state
     * @since 3.5.4
     */
    public ?string $offLabel = null;

    /**
     * @var bool Whether card views which include this field should show the custom ON/OFF labels, rather than the field name.
     * @since 5.9.0
     */
    public bool $showLabelsInCards = false;

    /**
     * @inheritdoc
     */
    public function __construct($config = [])
    {
        // Config normalization
        if (($onLabel = ArrayHelper::remove($config, 'label')) !== null) {
            $config['onLabel'] = $onLabel;
        }

        parent::__construct($config);
    }

    /**
     * @inheritdoc
     */
    public function getSettingsHtml(): ?string
    {
        return $this->settingsHtml(false);
    }

    /**
     * @inheritdoc
     */
    public function getReadOnlySettingsHtml(): ?string
    {
        return $this->settingsHtml(true);
    }

    private function settingsHtml(bool $readOnly): string
    {
        return
            Cp::lightswitchFieldHtml([
                'label' => Craft::t('app', 'Default Value'),
                'id' => 'default',
                'name' => 'default',
                'on' => $this->default,
                'disabled' => $readOnly,
            ]) .
            Cp::textFieldHtml([
                'label' => Craft::t('app', 'OFF Label'),
                'instructions' => Craft::t('app', 'The label text to display beside the lightswitch’s disabled state.'),
                'id' => 'off-label',
                'name' => 'offLabel',
                'value' => $this->offLabel,
                'disabled' => $readOnly,
            ]) .
            Cp::textFieldHtml([
                'label' => Craft::t('app', 'ON Label'),
                'instructions' => Craft::t('app', 'The label text to display beside the lightswitch’s enabled state.'),
                'id' => 'on-label',
                'name' => 'onLabel',
                'value' => $this->onLabel,
                'disabled' => $readOnly,
            ]) .
            Cp::lightswitchFieldHtml([
                'label' => Craft::t('app', 'Show ON/OFF labels in cards'),
                'instructions' => Craft::t('app', 'Whether card views which include this field should show the custom ON/OFF labels, rather than the field name.'),
                'id' => 'show-labels-in-cards',
                'name' => 'showLabelsInCards',
                'on' => $this->showLabelsInCards,
                'disabled' => $readOnly,
            ]);
    }

    /**
     * @inheritdoc
     */
    public function getDefaultValue(): bool
    {
        return $this->default;
    }

    /**
     * @inheritdoc
     */
    protected function inputHtml(mixed $value, ?ElementInterface $element, bool $inline): string
    {
        return $this->_inputHtmlInternal($value, $element, false);
    }

    /**
     * @inheritdoc
     */
    public function getStaticHtml(mixed $value, ?ElementInterface $element = null): string
    {
        return $this->_inputHtmlInternal($value, $element, true);
    }

    /**
     * Render html for both static and interactive lightswitch field
     *
     * @param mixed $value
     * @param ElementInterface|null $element
     * @param bool $static
     * @return string
     */
    private function _inputHtmlInternal(mixed $value, ?ElementInterface $element, bool $static): string
    {
        $id = $this->getInputId();
        return Craft::$app->getView()->renderTemplate('_includes/forms/lightswitch.twig', [
            'id' => $id,
            'labelId' => $this->getLabelId(),
            'describedBy' => $this->describedBy,
            'name' => $this->handle,
            'on' => (bool)$value,
            'onLabel' => Craft::t('site', $this->onLabel),
            'offLabel' => Craft::t('site', $this->offLabel),
            'disabled' => $static,
        ]);
    }

    /**
     * @inheritdoc
     */
    public function normalizeValue(mixed $value, ?ElementInterface $element): mixed
    {
        // If this is a new entry, look for a default option
        if ($value === null) {
            $value = $this->default;
        }

        return (bool)$value;
    }

    /**
     * @inheritdoc
     */
    public function getElementConditionRuleType(): array|string|null
    {
        return LightswitchFieldConditionRule::class;
    }

    /**
     * @inheritdoc
     */
    public function getContentGqlType(): Type|array
    {
        return Type::boolean();
    }

    /**
     * @inheritdoc
     * @since 3.5.0
     */
    public function getContentGqlMutationArgumentType(): Type|array
    {
        return [
            'name' => $this->handle,
            'type' => Type::boolean(),
            'description' => $this->instructions,
        ];
    }

    /**
     * @inheritdoc
     * @since 3.5.0
     */
    public function getContentGqlQueryArgumentType(): Type|array
    {
        return [
            'name' => $this->handle,
            'type' => Type::boolean(),
        ];
    }

    /**
     * @inheritdoc
     */
    public function getPreviewHtml(mixed $value, ElementInterface $element): string
    {
        $canShowLabel = ($value && $this->onLabel) || (!$value && $this->offLabel);

        if (
            $element->viewMode === 'cards' &&
            (!$this->showLabelsInCards || !$canShowLabel)
        ) {
            return Cp::statusLabelHtml([
                'color' => $value ? ColorEnum::Teal : ColorEnum::Gray,
                'label' => $this->getUiLabel(),
                'icon' => $value ? 'check' : 'xmark',
            ]);
        }

        if (($value && $this->onLabel) || (!$value && $this->offLabel)) {
            return Cp::statusLabelHtml([
                'color' => $value ? ColorEnum::Teal : ColorEnum::Gray,
                'label' => Craft::t('site', $value ? $this->onLabel : $this->offLabel),
                'icon' => $value ? 'check' : 'xmark',
            ]);
        }

        if (!$value) {
            return '';
        }

        $label = $this->onLabel ? Craft::t('site', $this->onLabel) : Craft::t('app', 'Enabled');

        return
            Html::tag('span', '', [
                'class' => 'checkbox-icon',
                'role' => 'img',
                'title' => $label,
                'aria' => [
                    'label' => $label,
                ],
            ]) .
            Html::tag('span', $this->getUiLabel(), [
                'class' => 'checkbox-preview-label',
            ]);
    }

    /**
     * @inheritdoc
     */
    public function previewPlaceholderHtml(mixed $value, ?ElementInterface $element): string
    {
        if (!$value) {
            $value = 1;
        }

        return $this->getPreviewHtml($value, $element ?? new Entry(['viewMode' => 'cards']));
    }
}
