<?php

declare(strict_types=1);

namespace ElixirAudit\Tests\DataSetup\Traits\App\Helpers;

/**
 * Tests provide a small per-language config; this trait expands it into the object-structure
 * used by existing tests ($page->menuItem, $page->gM->pageTitle, etc.).
 */
trait pageDataTrait
{
    private array $uoDefaultTableColumns = [
        'h_checkbox',
        'h_id',
        'h_a_title',
        'h_a_desc',
        'h_cl_name',
        'h_a_created',
        'h_a_valid_from',
        'h_a_valid_till',
        'h_status',
        'h_buttons',
    ];

    private array $uoDefaultTableColumnsToSkip = [
        'h_checkbox',
        'h_status',
        'h_buttons',
    ];

    /**
     * Build expanded page data for Unified Objects tests.
     *
     * Input config (per language):
     * [
     *   LANG_CODE => [
     *     'url' => '...',
     *     'menuItem' => '...',
     *     'pageTitle' => '...',
     *     'objectItem' => '...',
     *     'messagesExist' => ['mod' => '...', 'sub' => '...'], // partial ok
     *
     *     'tableColumns' => [
     *        'remove' => ['h_cl_name'],
     *        'add' => ['h_custom' => 'Custom label'], // adds to order + adds label
     *     ],
     *     'rename' => ['h_a_title' => 'Title'], // label override for existing column
     *
     *     'tableColumnsToSkip' => [
     *        'add' => ['h_custom'],
     *        'remove' => ['h_status'],
     *     ],
     *   ],
     * ]
     *
     * Extra supported keys (optional):
     * - 'dropdownActions' => ['inew' => '...', ...]
     * - 'tableColumnsOrder' => ['h_checkbox', 'h_id', ...]  // overrides default order for this language/test
     *
     * @return array<string, object> languageCode => pageData object
     */
    protected function getPageData(array $config): array
    {
        $out = [];

        foreach ($config as $langCode => $cfg) {
            if (!is_array($cfg)) {
                continue;
            }

            // TODO: Table columns and skip columns should be simplified.
            $tableCfg   = is_array($cfg['tableColumns'] ?? null) ? $cfg['tableColumns'] : [];
            $rename     = is_array($tableCfg['rename']  ?? null) ? $tableCfg['rename']  : [];
            $removeCols = is_array($tableCfg['remove']  ?? null) ? $tableCfg['remove']  : [];
            $addCols    = is_array($tableCfg['add']     ?? null) ? $tableCfg['add']     : [];

            $skipCfg    = is_array($cfg['tableColumnsToSkip'] ?? null) ? $cfg['tableColumnsToSkip']  : [];
            $skipAdd    = is_array($skipCfg['add']    ?? null) ? $skipCfg['add']     : [];
            $skipRemove = is_array($skipCfg['remove'] ?? null) ? $skipCfg['remove']  : [];

            $baseOrder = is_array($cfg['tableColumnsOrder'] ?? null)
                ? $cfg['tableColumnsOrder']
                : $this->uoDefaultTableColumns;

            $tableColumns       = $this->buildTableColumnsFromBase($baseOrder, $removeCols, array_keys($addCols));
            $tableColumnsToSkip = $this->buildTableColumnsToSkip($removeCols, $skipAdd, $skipRemove);

            // Labels map:
            // - rename overrides existing labels
            // - add provides labels for new columns (and can also override if same key)
            $labels = [];
            foreach ($rename as $id => $label) {
                $labels[(string)$id] = (string)$label;
            }
            foreach ($addCols as $id => $label) {
                $labels[(string)$id] = (string)$label;
            }

            $expanded = [
                'url'                => isset($cfg['url']) ? (string)$cfg['url'] : '',
                'menuItem'           => isset($cfg['menuItem']) ? (string)$cfg['menuItem'] : '',
                'menuParentItem'     => isset($cfg['menuItem']) ? (string)$cfg['menuParentItem'] : '',
                'gM'                 => (object)[
                    'pageTitle'        => isset($cfg['pageTitle']) ? (string)$cfg['pageTitle'] : '',
                    'objectItem'       => isset($cfg['objectItem']) ? (string)$cfg['objectItem'] : '',
                    'messagesExist'    => is_array($cfg['messagesExist'] ?? null) ? $cfg['messagesExist'] : [],
                    'tableColumns'     => $labels,
                    'dropdownActions'  => is_array($cfg['dropdownActions'] ?? null) ? $cfg['dropdownActions'] : [],
                    'validationErrors' => is_array($cfg['validationErrors'] ?? null) ? $cfg['validationErrors'] : [],
                    'rowActions'       => is_array($cfg['rowActions'] ?? null) ? $cfg['rowActions'] : [],
                    'dialog'           => is_array($cfg['dialog'] ?? null) ? $cfg['dialog'] : [],
                ],
                'tableColumns'       => $tableColumns,
                'tableColumnsToSkip' => $tableColumnsToSkip,
            ];

            $out[(string)$langCode] = (object) $expanded;
        }

        return $out;
    }

    /**
     * @param string[] $baseOrder
     * @param string[] $remove
     * @param string[] $addIds
     * @return string[]
     */
    private function buildTableColumnsFromBase(array $baseOrder, array $remove, array $addIds): array
    {
        $cols = array_merge(array_values(array_diff($baseOrder, $remove)), $addIds);

        // Keep order, drop duplicates.
        $seen = [];
        $out = [];
        foreach ($cols as $id) {
            $id = (string) $id;
            if (isset($seen[$id])) {
                continue;
            }
            $seen[$id] = true;
            $out[] = $id;
        }

        return $out;
    }

    /**
     * @param string[] $removedColumns
     * @param string[] $skipAdd
     * @param string[] $skipRemove
     * @return string[]
     */
    private function buildTableColumnsToSkip(array $removedColumns, array $skipAdd, array $skipRemove): array
    {
        $allRemove = array_merge($removedColumns, $skipRemove);

        $skip = array_diff($this->uoDefaultTableColumnsToSkip, $allRemove);
        $skip = array_merge(array_values($skip), $skipAdd);

        // Keep order, drop duplicates.
        $seen = [];
        $out = [];
        foreach ($skip as $id) {
            $id = (string) $id;
            if (isset($seen[$id])) {
                continue;
            }
            $seen[$id] = true;
            $out[] = $id;
        }

        return $out;
    }
}