<?php

namespace App\Services\Sms;

use App\Models\AudienceRegistration;
use App\Models\AudienceSmsLog;
use App\Support\SmsConfig;
use Illuminate\Support\Facades\Log;

class AudienceRegistrationSmsNotifier
{
    public const SCENE_PRE_REGISTER = AudienceSmsLog::SCENE_PRE_REGISTER;

    public const SCENE_APPROVED = AudienceSmsLog::SCENE_APPROVED;

    public function __construct(private readonly SubmailSmsClient $client)
    {
    }

    public function notifyPreRegister(AudienceRegistration $registration): ?AudienceSmsLog
    {
        $registration->loadMissing('session');
        $vars = [
            'session' => $this->clip((string) ($registration->session?->name ?? ''), 40),
        ];

        return $this->send(
            $registration,
            AudienceSmsLog::SCENE_PRE_REGISTER,
            trim((string) config('sms.submail.audience_pre_register_template_id')),
            $vars,
            (string) config('sms.submail.audience_pre_register_content'),
            'sms.audience_pre_register'
        );
    }

    public function notifyApproved(AudienceRegistration $registration): ?AudienceSmsLog
    {
        $registration->loadMissing('session');
        $vars = [
            'session' => $this->clip((string) ($registration->session?->name ?? ''), 40),
            'time' => $this->clip((string) ($registration->approved_event_time_text ?? ''), 40),
            'address' => $this->clip((string) ($registration->approved_event_address_text ?? ''), 40),
            'url' => $this->ticketUrl($registration),
        ];

        return $this->send(
            $registration,
            AudienceSmsLog::SCENE_APPROVED,
            trim((string) config('sms.submail.audience_approved_template_id')),
            $vars,
            (string) config('sms.submail.audience_approved_content'),
            'sms.audience_approved'
        );
    }

    /**
     * @param  array<string, string>  $vars
     */
    private function send(
        AudienceRegistration $registration,
        string $scene,
        string $project,
        array $vars,
        string $contentTemplate,
        string $logPrefix,
    ): ?AudienceSmsLog {
        if (! (bool) config('sms.enabled')) {
            return null;
        }
        if ((string) config('sms.driver') !== 'submail') {
            return null;
        }

        $mobile = trim((string) $registration->phone);
        if (preg_match('/^1[3-9]\d{9}$/', $mobile) !== 1) {
            Log::warning($logPrefix.' skipped_invalid_mobile', [
                'registration_id' => $registration->id,
            ]);

            return null;
        }

        try {
            SmsConfig::assertReadyForRealSending();
        } catch (\Throwable $e) {
            Log::error($logPrefix.' config_incomplete', [
                'registration_id' => $registration->id,
                'error' => $e->getMessage(),
            ]);

            return $this->persistLog(
                $registration,
                $scene,
                $project,
                $mobile,
                $vars,
                $contentTemplate,
                AudienceSmsLog::STATUS_FAILED,
                null,
                $e->getMessage(),
            );
        }

        if ($project === '') {
            Log::error($logPrefix.' missing_template');

            return $this->persistLog(
                $registration,
                $scene,
                $project,
                $mobile,
                $vars,
                $contentTemplate,
                AudienceSmsLog::STATUS_FAILED,
                null,
                '缺少短信模板',
            );
        }

        $result = $this->client->sendTemplate($mobile, $project, $vars);
        $fee = is_array($result->response) && isset($result->response['fee']) && is_numeric($result->response['fee'])
            ? (int) $result->response['fee']
            : null;

        if (! $result->success) {
            Log::error($logPrefix.' failed', [
                'registration_id' => $registration->id,
                'mobile_mask' => substr($mobile, 0, 3).'****'.substr($mobile, -4),
                'provider_code' => $result->providerCode,
                'provider_message' => $result->providerMessage,
                'provider_request_id' => $result->requestId,
            ]);

            return $this->persistLog(
                $registration,
                $scene,
                $project,
                $mobile,
                $vars,
                $contentTemplate,
                AudienceSmsLog::STATUS_FAILED,
                $result->requestId,
                $result->providerMessage,
                $fee,
            );
        }

        return $this->persistLog(
            $registration,
            $scene,
            $project,
            $mobile,
            $vars,
            $contentTemplate,
            AudienceSmsLog::STATUS_PENDING,
            $result->requestId,
            null,
            $fee,
        );
    }

    /**
     * @param  array<string, string>  $vars
     */
    private function persistLog(
        AudienceRegistration $registration,
        string $scene,
        string $project,
        string $mobile,
        array $vars,
        string $contentTemplate,
        string $status,
        ?string $sendId,
        ?string $droppedReason,
        ?int $fee = null,
    ): AudienceSmsLog {
        return AudienceSmsLog::query()->create([
            'competition_id' => $registration->competition_id,
            'audience_registration_id' => $registration->id,
            'scene' => $scene,
            'mobile' => $mobile,
            'template_id' => $project !== '' ? $project : null,
            'content' => $this->renderContent($contentTemplate, $vars),
            'vars_json' => $vars,
            'send_id' => $sendId,
            'status' => $status,
            'fee' => $fee,
            'dropped_reason' => $droppedReason,
            'sent_at' => now(),
        ]);
    }

    /**
     * @param  array<string, string>  $vars
     */
    public function renderContent(string $template, array $vars): string
    {
        $content = $template;
        foreach ($vars as $key => $value) {
            $content = str_replace('{'.$key.'}', $value, $content);
        }

        return $content;
    }

    public function ticketUrl(AudienceRegistration $registration): string
    {
        $registration->loadMissing('competition');
        $slug = rawurlencode((string) ($registration->competition?->slug ?? ''));
        $ticket = rawurlencode((string) $registration->ticket_code);
        $base = rtrim((string) (config('sms.audience_ticket_base_url') ?: config('app.url')), '/');
        $path = (string) config('sms.audience_ticket_path', '/admin/c/{slug}/t/{ticket}');
        $path = str_replace(['{slug}', '{ticket}'], [$slug, $ticket], $path);
        if ($path === '' || $path[0] !== '/') {
            $path = '/'.$path;
        }

        return $base.$path;
    }

    private function clip(string $value, int $max): string
    {
        $value = trim($value);
        if (mb_strlen($value) <= $max) {
            return $value;
        }

        return mb_substr($value, 0, $max);
    }
}