<?php

namespace App\Services\Softphone;

use Modules\Platform\Core\Helper\CompanySettings;
use Modules\Platform\Core\Helper\SettingsHelper;
use Modules\Platform\User\Entities\User;

/**
 * Shared Softphone configuration for a user (used by the dashboard phone and
 * the External Client integration page).
 *
 * Resolution order:
 *   1. Per-user `user_extensions` row (sip_credentials_enabled, latest).
 *   2. Company WSS setting (`s_pbx_wss_url` / `s_pbx_wss_port`).
 *   3. Server default: '99' . users.id.
 */
class SoftphoneConfigResolver
{
    /**
     * Configuration payload consumed by phone-stable.blade.php and
     * phone-integration.blade.php.
     */
    public function resolveForUser(User $user): array
    {
        // WSS extension lookup — used for custom domain/port configuration only.
        $wssExt = User::where('users.id', $user->id)
            ->join('user_extensions', 'users.id', '=', 'user_extensions.user_id')
            ->where('user_extensions.sip_credentials_enabled', true)
            ->orderBy('user_extensions.id', 'DESC')
            ->first();

        // --- Three-tier SIP data resolution ---
        // 1. Per-user UserExtension row (highest priority)
        // 2. Company-level pbxWssUrl setting (protocol=wss, port=8089, extension=user_id)
        // 3. Server default via url('') (lowest priority)
        $companyId = $user->company_id;
        $globalWssUrl = $companyId ? CompanySettings::get(
            SettingsHelper::S_PBX_WSS_URL, null, $companyId
        ) : null;
        $globalWssPort = $companyId ? CompanySettings::get(
            SettingsHelper::S_PBX_WSS_PORT, null, $companyId
        ) : null;

        if ($wssExt && $wssExt->label && $wssExt->sip_domain) {
            // Tier 1: Per-user extension data
            $extension = $wssExt->label;
            $pbx_url   = $wssExt->sip_domain;
            $ws_port   = $wssExt->sip_port ?? 8089;
        } elseif (!empty($globalWssUrl)) {
            // Tier 2: Company-level WSS settings (extension = user id)
            $extension = $user->id;
            $pbx_url   = $globalWssUrl;
            $ws_port   = !empty($globalWssPort) ? $globalWssPort : 8089;
        } else {
            // Tier 3: Default server fallback
            $extension = '99' . $user->id;
            $pbx_url   = url('');
            $ws_port   = env('WEBSOCKETPORT', 8089);
        }

        $sip_extension  = $extension;
        $sipRow         = \DB::table('asterisk.sip')->where(['keyword' => 'secret', 'id' => $extension])->first();
        $sip_password   = $sipRow ? $sipRow->data : null;

        // Ensure pbx_url is a bare hostname (strip scheme if present)
        if (str_contains($pbx_url, '://')) {
            $pbx_url_parts = explode('://', $pbx_url);
            $pbx_url = end($pbx_url_parts);
        }

        $description = 'This is a stable version of the phone. If you are facing any issue with the phone, please use this version.';

        return [
            'user' => [
                'name'         => $user->name,
                'id'           => $user->id,
                'email'        => $user->email,
                'timezone'     => $user->time_zone,
                'company_name' => $user->company->name ?? "Main Company",
            ],
            'description'           => $description,
            'extension'             => $sip_extension,
            'password'              => $sip_password,
            'pbx_url'               => $pbx_url,
            'port'                  => $ws_port,
            'path'                  => '/ws',
            'getCallerInfoUrl'      => route('getCallerInfo'),
            'autoHoldEnabled'       => (bool) CompanySettings::get('S_COMPANY_SOFTPHONE_AUTO_HOLD'),
            'autoAnswer'            => (bool) CompanySettings::get('S_COMPANY_SOFTPHONE_AUTO_ANSWER'),
            'autoAnswerTimeout'     => SettingsHelper::normalizeSoftphoneAutoAnswerTimeout(CompanySettings::get(SettingsHelper::S_COMPANY_SOFTPHONE_AUTO_ANSWER_TIMEOUT)),
            'surveyTransferEnabled' => (bool) CompanySettings::get(SettingsHelper::S_COMPANY_SOFTPHONE_SURVEY_TRANSFER),
            'glnEnabled'            => (bool) CompanySettings::get(SettingsHelper::S_COMPANY_GLN_ENABLED, null, $companyId),
            'activeLinkedidUrl'     => route('dashboard.activeLinkedid'),
            'pauseEnablesDnd'       => (bool) CompanySettings::get(SettingsHelper::S_COMPANY_SOFTPHONE_PAUSE_ENABLE_DND),
            'whatsAppCountryCode'   => SettingsHelper::normalizeWhatsAppCountryCode(CompanySettings::get(SettingsHelper::S_COMPANY_WHATSAPP_COUNTRY_CODE)),
            'dndPolicy'             => $this->resolveDndPolicy($user),
        ];
    }

    /**
     * Returns "disabled" when DND is off for the user, otherwise "allow".
     */
    public function resolveDndPolicy(User $user): string
    {
        if (isset($user->dnd_enabled) && !$user->dnd_enabled) {
            return 'disabled';
        }

        return 'allow';
    }
}