freeu-project/app/Services/Admin/ContactUsService.php

<?php

namespace App\Services\Admin;

use Mail;
use App\Models\ContactUs;
use App\Models\ContactUsAdvanced;
use App\Mail\ReplyContactUsMail;
use App\Mail\ReplyInvestorMail;

class ContactUsService
{

    public function getAllData()
    {
        return ContactUs::latest()->get();
    }

    public function sendMail($email, $subject, $reply, $investorMail = null)
    {
        $data['subject'] = $subject;
        $data['message'] = $reply;
        if($investorMail)
        {
            return Mail::to($email)->send(new ReplyInvestorMail($data));
        }
        return Mail::to($email)->send(new ReplyContactUsMail($data));
    }

    public function store($request)
    {
        $validated = $request->validated();
        $validated['message'] = $request->reply;
        return ContactUsAdvanced::create($validated);
    }

    public function view($id)
    {
        return ContactUsAdvanced::with('users')->where('contact_us_id', '=', $id)->get();
    }
}