<?php

namespace App\Services;

use App\Models\LdapGroupMeta;
use App\Models\LdapUserMeta;

class LdapMetadataService
{
    public function getUserMeta(string $username): array
    {
        $row = LdapUserMeta::query()->where('username', $username)->first();

        return [
            'other_email' => $row?->other_email ?? '',
            'phone' => $row?->phone ?? '',
            'admin_note' => $row?->admin_note ?? '',
            'avatar' => $row?->avatar ?? null,
        ];
    }

    public function saveUserMeta(string $username, array $data): void
    {
        LdapUserMeta::query()->updateOrCreate(
            ['username' => $username],
            [
                'other_email' => $data['other_email'] ?? null,
                'phone' => $data['phone'] ?? null,
                'admin_note' => $data['admin_note'] ?? null,
            ]
        );
    }

    public function saveUserSelfMeta(string $username, ?string $otherEmail, ?string $phone): void
    {
        $existing = LdapUserMeta::query()->where('username', $username)->first();

        LdapUserMeta::query()->updateOrCreate(
            ['username' => $username],
            [
                'other_email' => $otherEmail,
                'phone' => $phone,
                'admin_note' => $existing?->admin_note,
            ]
        );
    }

    public function saveAvatar(string $username, ?string $avatarBase64): void
    {
        LdapUserMeta::query()->updateOrCreate(
            ['username' => $username],
            ['avatar' => $avatarBase64],
        );
    }

    public function getGroupMeta(string $groupKey): array
    {
        $row = LdapGroupMeta::query()->where('group_key', $groupKey)->first();

        return [
            'admin_note' => $row?->admin_note ?? '',
        ];
    }

    public function saveGroupMeta(string $groupKey, string $groupName, ?string $adminNote): void
    {
        LdapGroupMeta::query()->updateOrCreate(
            ['group_key' => $groupKey],
            [
                'group_name' => $groupName,
                'admin_note' => $adminNote,
            ]
        );
    }

    /**
     * @param  list<array<string, mixed>>  $users
     * @return list<array<string, mixed>>
     */
    public function enrichUsers(array $users): array
    {
        if ($users === []) {
            return [];
        }

        $usernames = array_column($users, 'username');
        $metaByUser = LdapUserMeta::query()
            ->whereIn('username', $usernames)
            ->get()
            ->keyBy('username');

        foreach ($users as &$user) {
            $meta = $metaByUser->get($user['username']);
            $user['other_email'] = $meta?->other_email ?? '';
            $user['phone'] = $meta?->phone ?? '';
            $user['admin_note'] = $meta?->admin_note ?? '';
        }

        return $users;
    }

    /**
     * @param  list<array<string, mixed>>  $groups
     * @return list<array<string, mixed>>
     */
    public function enrichGroups(array $groups): array
    {
        if ($groups === []) {
            return [];
        }

        $keys = array_column($groups, 'route_key');
        $metaByKey = LdapGroupMeta::query()
            ->whereIn('group_key', $keys)
            ->get()
            ->keyBy('group_key');

        foreach ($groups as &$group) {
            $meta = $metaByKey->get($group['route_key']);
            $group['admin_note'] = $meta?->admin_note ?? '';
        }

        return $groups;
    }

    /**
     * @param  list<array<string, mixed>>  $users
     * @return list<array<string, mixed>>
     */
    /**
     * @return list<string>
     */
    public function findUsernamesByMetaSearch(string $search): array
    {
        $needle = '%'.addcslashes(trim($search), '%_\\').'%';

        return LdapUserMeta::query()
            ->where(function ($query) use ($needle) {
                $query->where('other_email', 'like', $needle)
                    ->orWhere('phone', 'like', $needle)
                    ->orWhere('admin_note', 'like', $needle);
            })
            ->pluck('username')
            ->all();
    }

    public function filterUsersByExtendedSearch(array $users, string $search): array
    {
        $needle = mb_strtolower(trim($search));

        if ($needle === '') {
            return $users;
        }

        return array_values(array_filter($users, function (array $user) use ($needle) {
            foreach (['other_email', 'phone', 'admin_note'] as $field) {
                if (str_contains(mb_strtolower((string) ($user[$field] ?? '')), $needle)) {
                    return true;
                }
            }

            return false;
        }));
    }
}