<?php

namespace MintyPHP\Repository\Content;

use MintyPHP\DB;

/** Reads and writes locale-specific content blocks for CMS pages. */
class PageContentRepository
{
    private static function unwrap(?array $row): ?array
    {
        if (!$row) {
            return null;
        }
        return $row['page_contents'] ?? $row;
    }

    public static function findByPageIdAndLocale(int $pageId, string $locale): ?array
    {
        $row = DB::selectOne(
            'select id, page_id, locale, content, created_by, modified_by, created, modified from page_contents where page_id = ? and locale = ? limit 1',
            (string) $pageId,
            $locale
        );
        return self::unwrap($row);
    }

    public static function create(array $data)
    {
        return DB::insert(
            'insert into page_contents (page_id, locale, content, created_by, created) values (?,?,?,?,NOW())',
            (string) $data['page_id'],
            $data['locale'],
            $data['content'] ?? null,
            $data['created_by'] ?? null
        );
    }

    public static function update(int $id, array $data): bool
    {
        $fields = [
            'content' => $data['content'] ?? null,
        ];
        if (array_key_exists('modified_by', $data)) {
            $fields['modified_by'] = $data['modified_by'];
        }

        $setParts = [];
        $params = [];
        foreach ($fields as $field => $value) {
            $setParts[] = sprintf('`%s` = ?', $field);
            $params[] = $value;
        }
        $params[] = (string) $id;

        $query = 'update page_contents set ' . implode(', ', $setParts) . ', modified = NOW() where id = ?';
        $result = DB::update($query, ...$params);
        return $result !== false;
    }
}