<?php

namespace MintyPHP\Repository;

use MintyPHP\DB;

class RoleRepository
{
    private static function unwrap(?array $row): ?array
    {
        if (!$row) {
            return null;
        }
        return $row['roles'] ?? null;
    }

    private static function unwrapList($rows): array
    {
        if (!is_array($rows)) {
            return [];
        }
        $list = [];
        foreach ($rows as $row) {
            $role = $row['roles'] ?? null;
            if (is_array($role)) {
                $list[] = $role;
            }
        }
        return $list;
    }

    public static function list(): array
    {
        $rows = DB::select(
            'select id, uuid, description, created_by, modified_by, created, modified from roles order by id desc'
        );
        return self::unwrapList($rows);
    }

    public static function listIds(): array
    {
        $rows = DB::select('select id from roles');
        if (!is_array($rows)) {
            return [];
        }
        $ids = [];
        foreach ($rows as $row) {
            $data = $row['roles'] ?? $row;
            if (is_array($data) && isset($data['id'])) {
                $ids[] = (int) $data['id'];
            }
        }
        return array_values(array_unique($ids));
    }

    public static function listPaged(array $options): array
    {
        $limit = (int) ($options['limit'] ?? 10);
        if ($limit < 1) {
            $limit = 10;
        } elseif ($limit > 100) {
            $limit = 100;
        }

        $offset = (int) ($options['offset'] ?? 0);
        if ($offset < 0) {
            $offset = 0;
        }

        $search = trim((string) ($options['search'] ?? ''));
        $order = (string) ($options['order'] ?? 'id');
        $dir = strtolower((string) ($options['dir'] ?? 'desc'));
        $allowedOrder = ['id', 'uuid', 'description', 'created', 'modified'];
        if (!in_array($order, $allowedOrder, true)) {
            $order = 'id';
        }
        if (!in_array($dir, ['asc', 'desc'], true)) {
            $dir = 'desc';
        }

        $where = [];
        $params = [];
        if ($search !== '') {
            $like = '%' . $search . '%';
            $where[] = '(description like ? or uuid like ?)';
            $params[] = $like;
            $params[] = $like;
        }

        $whereSql = $where ? (' where ' . implode(' and ', $where)) : '';
        $count = DB::selectValue('select count(*) from roles' . $whereSql, ...$params);
        $total = $count ? (int) $count : 0;

        $query = 'select id, uuid, description, created_by, modified_by, created, modified from roles' .
            $whereSql .
            sprintf(' order by `%s` %s limit ? offset ?', $order, $dir);

        $queryParams = array_merge($params, [(string) $limit, (string) $offset]);
        $rows = call_user_func_array(['MintyPHP\\DB', 'select'], array_merge([$query], $queryParams));

        return [
            'total' => $total,
            'rows' => self::unwrapList($rows),
        ];
    }

    public static function find(int $id): ?array
    {
        $row = DB::selectOne(
            'select id, uuid, description, created_by, modified_by, created, modified from roles where id = ? limit 1',
            (string) $id
        );
        return self::unwrap($row);
    }

    public static function findByUuid(string $uuid): ?array
    {
        $row = DB::selectOne(
            'select id, uuid, description, created_by, modified_by, created, modified from roles where uuid = ? limit 1',
            $uuid
        );
        return self::unwrap($row);
    }

    private static function uuidV4(): string
    {
        $data = random_bytes(16);
        $data[6] = chr((ord($data[6]) & 0x0f) | 0x40);
        $data[8] = chr((ord($data[8]) & 0x3f) | 0x80);
        return vsprintf('%s%s-%s-%s-%s-%s%s%s', str_split(bin2hex($data), 4));
    }

    public static function create(array $data)
    {
        return DB::insert(
            'insert into roles (uuid, description, created_by, created) values (?,?,?,NOW())',
            $data['uuid'] ?? self::uuidV4(),
            $data['description'],
            $data['created_by'] ?? null
        );
    }

    public static function update(int $id, array $data): bool
    {
        $fields = [
            'description' => $data['description'],
        ];
        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 roles set ' . implode(', ', $setParts) . ' where id = ?';
        $result = DB::update($query, ...$params);
        return $result !== false;
    }

    public static function delete(int $id): bool
    {
        $result = DB::delete('delete from roles where id = ?', (string) $id);
        return $result !== false;
    }
}