<?php

namespace MintyPHP\Module\Bookmarks\Repository;

use MintyPHP\DB;
use MintyPHP\Repository\Support\RepoQuery;
use MintyPHP\Repository\Support\RepositoryArrayHelper;

class BookmarkGroupRepository implements BookmarkGroupRepositoryInterface
{
    private function unwrapList(mixed $rows): array
    {
        return RepositoryArrayHelper::unwrapList($rows, 'user_bookmark_groups');
    }

    public function listByUser(int $userId, array $options = []): array
    {
        if ($userId <= 0) {
            return [];
        }
        [$limit, $offset] = RepoQuery::sanitizeLimitOffset($options, 100, 1, 100);
        $rows = DB::select(
            'select id, user_id, name, icon, sort_order, created, modified from user_bookmark_groups where user_id = ? order by sort_order, id limit ? offset ?',
            (string) $userId,
            (string) $limit,
            (string) $offset
        );
        return $this->unwrapList($rows);
    }

    public function countByUser(int $userId): int
    {
        if ($userId <= 0) {
            return 0;
        }
        $count = DB::selectValue(
            'select count(*) from user_bookmark_groups where user_id = ?',
            (string) $userId
        );
        return $count ? (int) $count : 0;
    }

    public function findById(int $id, int $userId): array|false
    {
        if ($id <= 0 || $userId <= 0) {
            return false;
        }
        $rows = DB::select(
            'select id, user_id, name, icon, sort_order, created, modified from user_bookmark_groups where id = ? and user_id = ?',
            (string) $id,
            (string) $userId
        );
        $list = $this->unwrapList($rows);
        return $list[0] ?? false;
    }

    public function create(array $data): int|false
    {
        $userId = (int) ($data['user_id'] ?? 0);
        $name = trim((string) ($data['name'] ?? ''));
        $icon = trim((string) ($data['icon'] ?? 'bi-folder'));
        $sortOrder = (int) ($data['sort_order'] ?? 0);
        if ($userId <= 0 || $name === '' || $icon === '') {
            return false;
        }
        return DB::insert(
            'insert into user_bookmark_groups (user_id, name, icon, sort_order, created) values (?,?,?,?,NOW())',
            (string) $userId,
            $name,
            $icon,
            (string) $sortOrder
        );
    }

    public function update(int $id, int $userId, array $data): bool
    {
        if ($id <= 0 || $userId <= 0) {
            return false;
        }

        $sets = [];
        $params = [];

        if (array_key_exists('name', $data)) {
            $name = trim((string) $data['name']);
            if ($name === '') {
                return false;
            }
            $sets[] = 'name = ?';
            $params[] = $name;
        }
        if (array_key_exists('icon', $data)) {
            $icon = trim((string) $data['icon']);
            if ($icon === '') {
                return false;
            }
            $sets[] = 'icon = ?';
            $params[] = $icon;
        }

        if ($sets === []) {
            return false;
        }

        $params[] = (string) $id;
        $params[] = (string) $userId;

        $affected = DB::update(
            'update user_bookmark_groups set ' . implode(', ', $sets) . ' where id = ? and user_id = ?',
            ...$params
        );
        return $affected !== false;
    }

    public function delete(int $id, int $userId): bool
    {
        if ($id <= 0 || $userId <= 0) {
            return false;
        }
        $deleted = DB::delete(
            'delete from user_bookmark_groups where id = ? and user_id = ?',
            (string) $id,
            (string) $userId
        );
        return $deleted !== false && (int) $deleted > 0;
    }

    public function updateSortOrders(int $userId, array $idOrderPairs): bool
    {
        if ($userId <= 0 || $idOrderPairs === []) {
            return false;
        }

        $idList = [];
        foreach ($idOrderPairs as $pair) {
            $id = (int) $pair['id'];
            if ($id <= 0) {
                return false;
            }
            $idList[] = $id;
        }
        $idList = array_values(array_unique($idList));

        $existingCount = DB::selectValue(
            'select count(*) from user_bookmark_groups where user_id = ? and id in (???)',
            (string) $userId,
            array_map('strval', $idList)
        );

        if ((int) $existingCount !== count($idList)) {
            return false;
        }

        $db = DB::handle();
        try {
            $db->begin_transaction();

            foreach ($idOrderPairs as $pair) {
                $id = (int) $pair['id'];
                $sortOrder = (int) $pair['sort_order'];
                if ($id <= 0 || $sortOrder <= 0) {
                    $db->rollback();
                    return false;
                }

                $updated = DB::update(
                    'update user_bookmark_groups set sort_order = ? where id = ? and user_id = ?',
                    (string) $sortOrder,
                    (string) $id,
                    (string) $userId
                );

                if ($updated === false) {
                    $db->rollback();
                    return false;
                }
            }

            $db->commit();
            return true;
        } catch (\Throwable) {
            try {
                $db->rollback();
            } catch (\Throwable) {
                // no-op
            }
            return false;
        }
    }
}