<?php

namespace App\Services\Customer;

use App\Support\EmailRecipients;
use App\Mail\Customer\ManualCustomerEmail;
use App\Mail\Customer\PasswordResetByAdmin;
use App\Models\Customer;
use App\Models\Log;
use App\Models\Mail as MailLog;
use App\Models\Template;
use App\Models\User;
use App\Repositories\Customer\CustomerRepositoryInterface;
use App\Services\Customer\Concerns\ResolvesCustomer;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Facades\Mail;

class CustomerMailService
{
    use ResolvesCustomer;

    public function __construct(
        private readonly CustomerRepositoryInterface $customerRepository,
    ) {}

    /**
     * Reset về mật khẩu ngẫu nhiên và gửi mail cho khách hàng.
     */
    public function resetPassword(string $uuid): void
    {
        $customer = $this->resolveCustomer($uuid);

        $this->setPasswordAndNotify($customer, str()->random(10));
    }

    /**
     * Đặt mật khẩu do admin nhập và gửi mail cho khách hàng, có ghi log.
     */
    public function sendPasswordEmail(string $uuid, string $password, string $clientIp): void
    {
        $customer = $this->resolveCustomer($uuid);

        $this->setPasswordAndNotify($customer, $password);

        Log::create([
            'agent' => 'admin',
            'client_ip' => $clientIp,
            'description' => sprintf('Admin gửi lại mật khẩu mới cho customer %s', $customer->email),
            'customer_id' => $customer->id,
        ]);
    }

    private function setPasswordAndNotify(Customer $customer, string $password): void
    {
        DB::transaction(function () use ($customer, $password) {
            $this->customerRepository->update($customer->id, ['password' => Hash::make($password)]);

            $mail = new PasswordResetByAdmin([
                'fullname' => $customer->fullname,
                'email' => $customer->email,
                'password' => $password,
            ]);

            Mail::to($customer->email)->send($mail);

            MailLog::create([
                'subject' => $mail->envelope()->subject,
                'to' => $customer->email,
                'customer_id' => $customer->id,
                'message' => $mail->render(),
            ]);
        });
    }

    /**
     * Gửi email tự do (hoặc theo template) cho khách hàng, có ghi log.
     */
    public function sendCustomEmail(string $uuid, array $data, User $admin, string $clientIp): void
    {
        $customer = $this->resolveCustomer($uuid);

        $template = null;
        $subject = trim((string) ($data['subject'] ?? ''));
        $message = trim((string) ($data['message'] ?? ''));

        if (!empty($data['template_id'])) {
            $template = Template::query()->whereKey($data['template_id'])->where('status', 1)->first();
            abort_if(!$template, 422, 'Template không tồn tại hoặc đang bị tắt.');

            $subject = trim((string) $template->subject);
            $message = trim((string) $template->message);
        }

        abort_if($subject === '' || $message === '', 422, 'Subject và content không được để trống.');

        $to = EmailRecipients::parse($data['to'] ?? null) ?: [$customer->email];
        $cc = EmailRecipients::parse($data['cc'] ?? null);
        $bcc = EmailRecipients::parse($data['bcc'] ?? null);

        abort_if($to === [], 422, 'Không có địa chỉ email nhận hợp lệ.');

        $mailer = Mail::to($to);
        if ($cc !== []) {
            $mailer->cc($cc);
        }
        if ($bcc !== []) {
            $mailer->bcc($bcc);
        }
        $mailer->send(new ManualCustomerEmail($subject, $message));

        MailLog::create([
            'template_id' => $template->id ?? 0,
            'subject' => $subject,
            'to' => implode(', ', $to),
            'cc' => implode(', ', $cc),
            'customer_id' => $customer->id,
            'message' => $message,
        ]);

        Log::create([
            'agent' => 'admin',
            'client_ip' => $clientIp,
            'description' => sprintf(
                '%s gửi email cho customer %s%s',
                $admin->username ?? $admin->email ?? 'Admin',
                $customer->email,
                $template ? sprintf(' bằng template #%s', $template->id) : '',
            ),
            'customer_id' => $customer->id,
        ]);
    }
}