<?php

declare(strict_types=1);

use Contao\CoreBundle\DataContainer\PaletteManipulator;
use Contao\DataContainer;
use Contao\Database;
use Contao\Input;
use Contao\StringUtil;

if (isset($GLOBALS['TL_DCA']['tl_member']['palettes']) && is_array($GLOBALS['TL_DCA']['tl_member']['palettes'])) {
    foreach (array_keys($GLOBALS['TL_DCA']['tl_member']['palettes']) as $paletteName) {
        if ($paletteName === '__selector__') {
            continue;
        }

        PaletteManipulator::create()
            ->addLegend('organization_legend', 'contact_legend', PaletteManipulator::POSITION_AFTER)
            ->addField('organizations', 'organization_legend', PaletteManipulator::POSITION_APPEND)
            ->applyToPalette((string) $paletteName, 'tl_member');
    }
}

$GLOBALS['TL_DCA']['tl_member']['config']['onbeforesubmit_callback'][] = static function (array $values): array {
    unset($values['organizations']);

    return $values;
};

$GLOBALS['TL_DCA']['tl_member']['config']['onsubmit_callback'][] = static function (DataContainer $dc): void {
    if (!$dc->id) {
        return;
    }

    $postedValues = Input::post('organizations');

    if (null === $postedValues) {
        return;
    }

    $organizationIds = array_values(array_unique(array_map('intval', is_array($postedValues) ? $postedValues : [$postedValues])));
    $memberId = (int) $dc->id;
    $db = Database::getInstance();
    $time = time();

    $db->prepare('DELETE FROM tl_member_organization WHERE member_id=?')
        ->execute($memberId);

    foreach ($organizationIds as $organizationId) {
        $db->prepare('INSERT INTO tl_member_organization (tstamp, member_id, organization_id) VALUES (?, ?, ?)')
            ->execute($time, $memberId, $organizationId);
    }
};

$GLOBALS['TL_DCA']['tl_member']['fields']['organizations'] = [
    'label' => &$GLOBALS['TL_LANG']['tl_member']['organizations'],
    'exclude' => true,
    'inputType' => 'select',
    'foreignKey' => 'tl_organization.title',
    'eval' => ['multiple' => true, 'chosen' => true, 'tl_class' => 'clr'],
    'relation' => [
        'type' => 'hasMany',
        'load' => 'lazy',
        'table' => 'tl_organization',
        'field' => 'id',
    ],
    'load_callback' => [
        static function ($value, DataContainer $dc): array {
            if (!$dc->id) {
                return [];
            }

            $result = Database::getInstance()
                ->prepare('SELECT organization_id FROM tl_member_organization WHERE member_id=? ORDER BY organization_id')
                ->execute($dc->id);

            return array_map(static fn (array $row): int => (int) $row['organization_id'], $result->fetchAllAssoc());
        },
    ],
    'save_callback' => [
        static function ($value, DataContainer $dc): array {
            if (!$dc->id) {
                return [];
            }

            $memberId = (int) $dc->id;
            $organizationIds = array_values(array_unique(array_map('intval', StringUtil::deserialize($value, true))));
            $db = Database::getInstance();
            $time = time();

            $db->prepare('DELETE FROM tl_member_organization WHERE member_id=?')
                ->execute($memberId);

            foreach ($organizationIds as $organizationId) {
                $db->prepare('INSERT INTO tl_member_organization (tstamp, member_id, organization_id) VALUES (?, ?, ?)')
                    ->execute($time, $memberId, $organizationId);
            }

            return $organizationIds;
        },
    ],
];