<?php
namespace DayTidy;

use DayTidy\Helpers\Autosuggest;
use DayTidy\Posts\Offering;
use Webilia\WP\Form as CoreForm;
use Webilia\WP\Helpers\Arr;
use Webilia\WP\Helpers\Str;

class Form extends CoreForm
{
    /**
     * @param mixed[] $args
     * @return mixed[]
     */
    private static function daytidyFieldArgs(array $args): array
    {
        if (!count($args)) return $args;

        $classes = array_values(array_unique(array_filter(preg_split('/\s+/', trim((string) ($args['class'] ?? ''))) ?: [], static function (string $class): bool {
            return $class !== '' && (Html::is_admin_context() || strpos($class, 'daytidy-admin-') !== 0);
        })));
        $field_class = Html::get_daytidy_class('fields');
        if (!in_array($field_class, $classes, true)) $classes[] = $field_class;
        $args['class'] = trim(implode(' ', $classes));
        return $args;
    }

    /** @param mixed[] $args */
    public static function label(array $args): string
    {
        if (!count($args)) return '';
        if (Html::is_admin_context())
        {
            $classes = preg_split('/\s+/', trim((string) ($args['class'] ?? ''))) ?: [];
            $classes = array_values(array_unique(array_filter($classes, static function (string $class): bool {
                return $class !== 'daytidy-field-label'
                    && $class !== 'wui-field__label'
                    && strpos($class, Html::get_daytidy_class('title', 'admin')) !== 0
                    && strpos($class, Html::get_daytidy_class('description', 'admin')) !== 0;
            })));
            if (!in_array(Html::get_daytidy_class('fields-label', 'admin'), $classes, true)) array_unshift($classes, Html::get_daytidy_class('fields-label', 'admin'));
            $args['class'] = implode(' ', $classes);
        }
        else
        {
            $classes = array_values(array_unique(array_filter(preg_split('/\s+/', trim((string) ($args['class'] ?? ''))) ?: [], static function (string $class): bool {
                return $class !== '' && strpos($class, 'daytidy-admin-') !== 0;
            })));
            $field_class = Html::get_daytidy_class('fields-label', 'fe');
            if (!array_intersect($classes, ['daytidy-switch', 'daytidy-fe-switch', 'daytidy-checkbox-switcher', 'daytidy-fe-checkbox-switcher', 'wui-choice']) && !in_array($field_class, $classes, true))
            {
                $classes[] = $field_class;
            }

            $args['class'] = implode(' ', $classes);
        }

        return parent::label($args);
    }

    /** @param mixed[] $args */
    public static function input(array $args, string $type = 'text'): string
    {
        return parent::input($type === 'hidden' ? $args : self::daytidyFieldArgs($args), $type);
    }

    /** @param mixed[] $args */
    public static function text(array $args): string
    {
        return parent::text(self::daytidyFieldArgs($args));
    }

    /** @param mixed[] $args */
    public static function number(array $args): string
    {
        return parent::number(self::daytidyFieldArgs($args));
    }

    /** @param mixed[] $args */
    public static function url(array $args): string
    {
        return parent::url(self::daytidyFieldArgs($args));
    }

    /** @param mixed[] $args */
    public static function tel(array $args): string
    {
        return parent::tel(self::daytidyFieldArgs($args));
    }

    /** @param mixed[] $args */
    public static function email(array $args): string
    {
        return parent::email(self::daytidyFieldArgs($args));
    }

    /** @param mixed[] $args */
    public static function file(array $args): string
    {
        return parent::file(self::daytidyFieldArgs($args));
    }

    /** @param mixed[] $args */
    public static function select(array $args): string
    {
        // Themes that enhance every select can skip DayTidy's native frontend controls.
        if (!Html::is_admin_context()) $args['attributes']['data-enhanced'] = '0';
        return parent::select(self::daytidyFieldArgs($args));
    }

    /** @param mixed[] $args */
    public static function pages(array $args): string
    {
        return parent::pages(self::daytidyFieldArgs($args));
    }

    /** @param mixed[] $args */
    public static function posts(array $args): string
    {
        return parent::posts(self::daytidyFieldArgs($args));
    }

    /** @param mixed[] $args */
    public static function taxonomy(string $taxonomy, array $args = []): string
    {
        return parent::taxonomy($taxonomy, self::daytidyFieldArgs($args + ['class' => '']));
    }

    /** @param mixed[] $args */
    public static function textarea(array $args): string
    {
        return parent::textarea(self::daytidyFieldArgs($args));
    }

    /** @param mixed[] $args */
    public static function checkbox(array $args): string
    {
        return parent::checkbox(self::daytidyFieldArgs($args));
    }

    /** @param mixed[] $args */
    public static function checkboxes(array $args): string
    {
        if (!count($args)) return parent::checkboxes($args);

        $attributes = isset($args['attributes']) && is_array($args['attributes']) ? $args['attributes'] : [];
        $classes = array_values(array_unique(array_filter(preg_split('/\s+/', trim((string) ($attributes['class'] ?? ''))) ?: [], static function (string $class): bool {
            return $class !== '' && (Html::is_admin_context() || strpos($class, 'daytidy-admin-') !== 0);
        })));
        $field_class = Html::get_daytidy_class('fields');
        if (!in_array($field_class, $classes, true)) $classes[] = $field_class;
        $attributes['class'] = implode(' ', $classes);
        $args['attributes'] = $attributes;

        return parent::checkboxes($args);
    }

    /** @param mixed[] $args */
    public static function editor(array $args): string
    {
        if (Html::is_admin_context() && !wp_doing_ajax()) return parent::editor($args);

        // wp_editor prints editor-buttons and its Dashicons dependency into its
        // HTML buffer. Public shortcode sanitization removes those link tags,
        // although WordPress has already marked the styles as done. Defer only
        // links produced during this editor render to the normal asset pipeline.
        $deferred = [];
        $defer = static function (string $tag, string $handle) use (&$deferred): string
        {
            $deferred[] = $handle;
            return '';
        };
        add_filter('style_loader_tag', $defer, PHP_INT_MAX, 2);
        try
        {
            return parent::editor($args);
        }
        finally
        {
            remove_filter('style_loader_tag', $defer, PHP_INT_MAX);
            $styles = wp_styles();
            $styles->done = array_values(array_diff($styles->done, $deferred));
            foreach ($deferred as $handle) wp_enqueue_style($handle);
        }
    }

    public static function requiredStar(): string
    {
        return '<span class="daytidy-required">*</span>';
    }

    /**
     * @param mixed[] $args
     * @return string
     */
    public static function switcher(array $args): string
    {
        if (!count($args)) return '';

        $toggle = Arr::isset($args, 'toggle');
        $toggle2 = Arr::isset($args, 'toggle2');

        // Current Value
        $value = Arr::isset($args, 'value') ? (int) $args['value'] : 0;
        $disabled = !empty($args['disabled']);

        $admin = Html::is_admin_context();

        return '<label class="daytidy-switch '.Html::get_daytidy_class('switch').($admin ? ' ' . Html::get_daytidy_class('fields-label', 'admin') : '').'">
            <input type="hidden" name="'.esc_attr($args['name']).'" value="'.($disabled ? $value : 0).'">
              <input type="checkbox"'.($admin ? ' class="' . Html::get_daytidy_class('fields', 'admin') . '"' : '').' id="'.esc_attr($args['id']).'" name="'.esc_attr($args['name']).'" value="1" '.($value === 1 ? 'checked' : '').($disabled ? ' disabled' : '').'>
            <span class="daytidy-slider '.Html::get_daytidy_class('slider').' '.($toggle ? 'daytidy-toggle' : '').'" '.($toggle ? 'data-for="'.esc_attr($args['toggle']).'"' : '').' '.($toggle2 ? 'data-for2="'.esc_attr($args['toggle2']).'"' : '').'></span>
        </label>';
    }

    /**
     * @param mixed[] $args
     * @return string
     */
    public static function imagepicker(array $args): string
    {
        if (!count($args)) return '';

        $image_id = $args['value'] ?? '';
        $image = $image_id ? wp_get_attachment_image($image_id, [400, 266]) : '';
        $button_classes = Html::is_admin_context() ? ' daytidy-button daytidy-button--secondary' : '';

        return '<div id="'.esc_attr($args['id']).'_img" class="daytidy-imagepicker-image-placeholder '.($image ? '' : 'daytidy-is-hidden').'">'.Str::ternary($image, '').'</div>
        <input type="hidden" name="'.esc_attr($args['name']).'" id="'.(isset($args['id']) ? esc_attr($args['id']) : '').'" value="'.esc_attr($image_id).'">
        <button type="button" class="wui-button wui-button--secondary'.$button_classes.' daytidy-select-image-button '.($image_id ? 'daytidy-is-hidden' : '').'" id="'.esc_attr($args['id']).'_button" data-for="#'.esc_attr($args['id']).'">'.esc_html__('Upload/Select image', 'daytidy').'</button>
        <button type="button" class="wui-button wui-button--secondary'.$button_classes.' daytidy-remove-image-button '.($image_id ? '' : 'daytidy-is-hidden').'" data-for="#'.esc_attr($args['id']).'">'.esc_html__('Remove image', 'daytidy').'</button>';
    }

    /**
     * @param mixed[] $args
     * @return string
     */
    public static function autosuggest(array $args): string
    {
        if (!count($args)) return '';

        $source = sanitize_key((string) ($args['source'] ?? ''));
        $name = (string) ($args['name'] ?? '');

        if (!$source || !$name) return '';

        $id = (string) ($args['id'] ?? ('daytidy-autosuggest-' . md5($name . $source)));
        $class = trim('daytidy-autosuggest ' . (string) ($args['class'] ?? ''));
        $gap_class = Html::get_daytidy_class('fields-gap');
        if (!in_array($gap_class, preg_split('/\s+/', $class) ?: [], true)) $class .= ' ' . $gap_class;
        $label = (string) ($args['label'] ?? '');
        $placeholder = (string) ($args['placeholder'] ?? esc_html__('Search items', 'daytidy'));
        $min_characters = absint($args['min_characters'] ?? 2);
        $limit = absint($args['limit'] ?? 0);
        $multiple = $limit !== 1;
        $input_attributes = isset($args['input_attributes']) && is_array($args['input_attributes'])
            ? self::plainAttributes($args['input_attributes'])
            : '';
        $values = isset($args['values']) && is_array($args['values'])
            ? array_map('absint', $args['values'])
            : [];
        $wrapper_attributes = self::plainAttributes([
            'class' => $class,
            'data-name' => $name,
            'data-source' => $source,
            'data-action' => 'daytidy-autosuggest',
            'data-nonce' => wp_create_nonce('daytidy-autosuggest'),
            'data-min-characters' => $min_characters,
            'data-limit' => $limit,
        ]);

        $selected = '';
        $selected_count = 0;
        foreach (array_unique(array_filter($values)) as $value)
        {
            $selected .= Autosuggest::item(
                $name,
                (int) $value,
                Autosuggest::label($source, (int) $value),
                $multiple
            );
            $selected_count++;

            if ($limit > 0 && $selected_count >= $limit) break;
        }

        return implode('', [
            '<div' . $wrapper_attributes . '>',
            $label ? sprintf('<label for="%1$s" class="%3$sdaytidy-autosuggest-label">%2$s</label>', esc_attr($id), esc_html($label), Html::is_admin_context() ? Html::get_daytidy_class('fields-label', 'admin') . ' ' : 'wui-field__label ' . Html::get_daytidy_class('fields-label', 'fe') . ' ') : '',
            '<div class="daytidy-autosuggest-search">',
            sprintf('<input type="search" id="%1$s" class="wui-input widefat daytidy-autosuggest-input%4$s" placeholder="%2$s" autocomplete="off"%3$s>', esc_attr($id), esc_attr($placeholder), $input_attributes, Html::is_admin_context() ? ' daytidy-input ' . Html::get_daytidy_class('fields', 'admin') : ' ' . Html::get_daytidy_class('fields', 'fe')),
            '<div class="daytidy-autosuggest-results" aria-live="polite"></div>',
            '</div>',
            sprintf('<div class="daytidy-autosuggest-selected">%s</div>', $selected),
            '</div>',
        ]);
    }

    /**
     * @param array<string, mixed> $attributes
     * @return string
     */
    private static function plainAttributes(array $attributes): string
    {
        $output = '';

        foreach ($attributes as $key => $value)
        {
            if ($value === null || $value === false) continue;

            if ($value === true)
            {
                $output .= ' ' . esc_attr((string) $key);
                continue;
            }

            if (!is_scalar($value)) continue;

            $output .= sprintf(' %s="%s"', esc_attr((string) $key), esc_attr((string) $value));
        }

        return $output;
    }

    /**
     * @param mixed[] $args
     * @return string
     */
    public static function copyableCode(array $args): string
    {
        if (!count($args)) return '';

        $value = (string) ($args['value'] ?? '');
        if ($value === '') return '';

        $id = isset($args['id']) ? sprintf(' id="%s"', esc_attr((string) $args['id'])) : '';
        $class = trim('daytidy-copyable-code ' . (string) ($args['class'] ?? ''));
        $copy_label = (string) ($args['copy_label'] ?? esc_html__('Copy to clipboard', 'daytidy'));
        $copied_label = (string) ($args['copied_label'] ?? esc_html__('Copied', 'daytidy'));
        $button_label = (string) ($args['button_label'] ?? '');
        $button_content = $button_label !== ''
            ? esc_html($button_label)
            : '<span class="wui daytidy-icon-scope"><span class="wui-icon ' . Html::get_daytidy_class('icon') . ' wui-icon--copy" aria-hidden="true"></span></span>';
        $button_variant = $button_label !== '' && ($args['button_variant'] ?? '') === 'neutral' ? 'neutral' : ($button_label !== '' ? 'secondary' : 'icon');
        $button_classes = $button_variant === 'icon'
            ? 'wui-button wui-button--tertiary wui-button--icon'
            : 'wui-button wui-button--' . $button_variant;
        if (Html::is_admin_context()) $button_classes .= ' daytidy-button daytidy-button--' . ($button_variant === 'icon' ? 'tertiary daytidy-button--icon' : $button_variant);

        return sprintf(
            '<code%1$s class="%2$s" data-copy-label="%3$s" data-copied-label="%4$s"><span class="daytidy-copyable-code-text">%5$s</span><button type="button" class="%7$s daytidy-copyable-code-button" aria-label="%3$s" title="%3$s">%6$s</button></code>',
            $id,
            esc_attr($class),
            esc_attr($copy_label),
            esc_attr($copied_label),
            esc_html($value),
            $button_content,
            esc_attr($button_classes)
        );
    }

    /**
     * @param mixed[] $args
     * @return string
     */
    public static function copyableTextarea(array $args): string
    {
        if (!count($args)) return '';

        $value = (string) ($args['value'] ?? '');
        if ($value === '') return '';

        $id = (string) ($args['id'] ?? ('daytidy-copyable-textarea-' . md5($value)));
        $class = trim('daytidy-copyable-code daytidy-copyable-textarea ' . (string) ($args['class'] ?? ''));
        $copy_label = (string) ($args['copy_label'] ?? esc_html__('Copy to clipboard', 'daytidy'));
        $copied_label = (string) ($args['copied_label'] ?? esc_html__('Copied', 'daytidy'));
        $rows = max(3, absint($args['rows'] ?? 12));

        return sprintf(
            '<div class="%1$s" data-copy-label="%2$s" data-copied-label="%3$s"><textarea id="%4$s" class="wui-textarea%7$s daytidy-copyable-code-text daytidy-copyable-textarea-field" rows="%5$d" readonly>%6$s</textarea><button type="button" class="wui-button wui-button--tertiary wui-button--icon%8$s daytidy-copyable-code-button daytidy-copyable-textarea-button" aria-label="%2$s" title="%2$s"><span class="wui daytidy-icon-scope"><span class="wui-icon %9$s wui-icon--copy" aria-hidden="true"></span></span></button></div>',
            esc_attr($class),
            esc_attr($copy_label),
            esc_attr($copied_label),
            esc_attr($id),
            $rows,
            esc_textarea($value),
            Html::is_admin_context() ? ' daytidy-textarea ' . Html::get_daytidy_class('fields', 'admin') : ' ' . Html::get_daytidy_class('fields', 'fe'),
            Html::is_admin_context() ? ' daytidy-button daytidy-button--tertiary daytidy-button--icon' : '',
            Html::get_daytidy_class('icon')
        );
    }

    /**
     * @param mixed[] $args
     * @return string
     */
    public static function iconButton(array $args = []): string
    {
        if (!count($args)) return '';

        $icon = (string) ($args['icon'] ?? '');
        $label = (string) ($args['label'] ?? '');
        if (!$icon || !$label) return '';
        if (strpos($icon, 'wui-icon') !== false)
        {
            $icon = trim(str_replace(['daytidy-fe-icon', 'daytidy-admin-icon'], '', $icon));
            $icon = (preg_replace('/\s+/', ' ', $icon) ?? $icon) . ' ' . Html::get_daytidy_class('icon');
        }

        $attributes = isset($args['attributes']) && is_array($args['attributes']) ? $args['attributes'] : [];
        $attributes['type'] = (string) ($attributes['type'] ?? ($args['type'] ?? 'button'));
        $attributes['class'] = trim('wui-button wui-button--tertiary wui-button--icon ' . (Html::is_admin_context() ? 'daytidy-button daytidy-button--tertiary daytidy-button--icon ' : '') . (string) ($args['class'] ?? ''));
        $attributes['aria-label'] = (string) ($attributes['aria-label'] ?? $label);

        if (isset($args['title']))
        {
            $attributes['title'] = (string) $args['title'];
        }

        $html_attributes = '';
        foreach ($attributes as $key => $value)
        {
            if ($value === null || $value === false) continue;

            if ($value === true)
            {
                $html_attributes .= ' ' . esc_attr((string) $key);
                continue;
            }

            $html_attributes .= sprintf(' %s="%s"', esc_attr((string) $key), esc_attr((string) $value));
        }

        return sprintf(
            '<button%1$s><span class="wui daytidy-icon-scope"><span class="%2$s" aria-hidden="true"></span></span><span class="screen-reader-text">%3$s</span></button>',
            $html_attributes,
            esc_attr($icon),
            esc_html($label)
        );
    }

    public static function datepicker(array $args): string
    {
        if (!count($args)) return '';
        return self::input($args);
    }

    /**
     * @param array<string> $args
     * @return string
     */
    public static function tzpicker(array $args = []): string
    {
        if (!count($args)) return '';

        $selected = Arr::ternary($args, 'value', '');
        $options = wp_timezone_choice($selected);

        $ex = explode('<optgroup', $options);
        unset($ex[count($ex) - 1]);

        $options = implode('<optgroup', $ex);
        $class = Html::is_admin_context() ? ' class="wui-select daytidy-select ' . Html::get_daytidy_class('fields', 'admin') . '"' : ' class="' . Html::get_daytidy_class('fields', 'fe') . '"';

        return '<select
            name="'.$args['name'].'"
            id="' . (isset($args['id']) ? esc_attr($args['id']) : '') . '"
            ' . $class . '
            ' . (Html::is_admin_context() ? '' : 'data-enhanced="0"') . '
        >
            <option value="global">'.esc_html__('Inherit from global options', 'daytidy').'</option>
            ' . $options . '
        </select>';
    }

    /**
     * @param array<string> $args
     * @return string
     */
    public static function spinner(array $args = []): string
    {
        if (!count($args)) return '';

        $attributes = self::concat_attributes($args);
        $vertical = Arr::truthy($args, 'vertical');

        $down = '<span class="daytidy-ns-btn">
            <button type="button" class="daytidy-number-spinner-button" data-dir="dwn" aria-label="' . esc_attr__('Decrease', 'daytidy') . '"><span class="wui daytidy-icon-scope" aria-hidden="true"><span class="wui-icon ' . Html::get_daytidy_class('icon') . ' wui-icon--dash-s"></span></span></button>
        </span>';

        $up = '<span class="daytidy-ns-btn">
            <button type="button" class="daytidy-number-spinner-button" data-dir="up" aria-label="' . esc_attr__('Increase', 'daytidy') . '"><span class="wui daytidy-icon-scope" aria-hidden="true"><span class="wui-icon ' . Html::get_daytidy_class('icon') . ' wui-icon--add-plus-s"></span></span></button>
        </span>';

        if ($vertical)
        {
            $button1 = $up;
            $button2 = $down;
        }
        else
        {
            $button1 = $down;
            $button2 = $up;
        }

        return '<div class="daytidy-number-spinner ' . ($vertical ? 'daytidy-vertical-spinner ' : '') . (isset($args['class']) ? esc_attr($args['class']) : '') . '">
            ' . $button1 . '
            <input
                type="text"
                name="' . esc_attr($args['name']) . '"
                id="' . (isset($args['id']) ? esc_attr($args['id']) : '') . '"
                class="' . esc_attr((string) (self::daytidyFieldArgs(['class' => $args['input_class'] ?? 'daytidy-pl-ns-value'])['class'] ?? 'daytidy-pl-ns-value')) . '"
                value="' . (isset($args['value']) ? esc_attr($args['value']) : '') . '"
                data-min="' . (isset($args['min']) ? esc_attr($args['min']) : '') . '"
                data-max="' . (isset($args['max']) ? esc_attr($args['max']) : '') . '"
                data-step="' . (isset($args['step']) ? esc_attr($args['step']) : '1') . '"
                '.trim($attributes).'
            >
            ' . $button2 . '
        </div>';
    }

    /**
     * @param mixed[] $args
     * @return string
     */
    public static function password(array $args = []): string
    {
        return '<div class="daytidy-show-hide-password" data-password="1">
            '.self::input($args, 'password').'
            <button
                type="button"
                class="wui-button wui-button--secondary '.(Html::is_admin_context() ? 'daytidy-button daytidy-button--secondary ' : '').'daytidy-show-hide-password-button"
                data-text-hide="'.esc_attr__('Hide', 'daytidy').'"
                data-text-show="'.esc_attr__('Show', 'daytidy').'"
            >'.esc_html__('Show', 'daytidy').'</button>
        </div>';
    }

    /**
     * @param mixed[] $args
     * @return string
     */
    public static function radio(array $args): string
    {
        if (!count($args)) return '';

        $attributes = self::concat_attributes($args);
        $required = isset($args['required']) && $args['required'];
        $name = (string) ($args['name'] ?? '');
        $id = (string) ($args['id'] ?? md5($name));
        $value = isset($args['value']) ? (string) $args['value'] : '';
        $options = isset($args['options']) && is_array($args['options']) ? $args['options'] : [];

        $items = '';
        foreach ($options as $option_value => $label)
        {
            $option_id = $id . '-' . sanitize_html_class((string) $option_value);

            $items .= sprintf(
                '<li><label for="%1$s" class="%8$s"><input type="radio"%9$s name="%2$s" id="%1$s" value="%3$s" %4$s %5$s %6$s> %7$s</label></li>',
                esc_attr($option_id),
                esc_attr($name),
                esc_attr((string) $option_value),
                $value !== '' && $value === (string) $option_value ? 'checked' : '',
                trim($attributes),
                $required ? 'required' : '',
                esc_html((string) $label),
                Html::is_admin_context() ? Html::get_daytidy_class('fields-label', 'admin') : '',
                ' class="' . Html::get_daytidy_class('fields') . '"'
            );
        }

        return '<ul class="' . (isset($args['class']) ? esc_attr((string) $args['class']) : '') . '">' . $items . '</ul>';
    }

    /**
     * @param array<string> $args
     * @param string $type
     * @return string
     */
    public static function button(array $args = [], $type = 'button'): string
    {
        if (!count($args)) return '';

        // Attributes
        $attributes = self::concat_attributes($args);

        return '<button
            type="'.esc_attr($type).'"
            id="' . (isset($args['id']) ? esc_attr($args['id']) : '') . '"
            class="' . (isset($args['class']) ? esc_attr($args['class']) : (Html::is_admin_context() ? 'wui-button daytidy-button' : 'wui-button')) . '"
            '.trim($attributes).'
        >' .
                esc_html($args['label']) . '
        </button>';
    }

    /**
     * @param array<string, mixed> $args
     * @return string
     */
    public static function offerings(array $args): string
    {
        $offerings = get_posts([
            'post_type' => Offering::PT,
            'posts_per_page' => -1,
            'post_status' => 'publish'
        ]);

        $options = [];
        foreach ($offerings as $offering)
        {
            $options[$offering->ID] = $offering->post_title;
        }

        $args['options'] = $options;

        return self::select($args);
    }
}