/home/kueuepay/public_html/app/Http/Controllers/Admin/SetupEmailController.php
<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\Admin\BasicSettings;
use App\Notifications\Admin\SendTestMail;
use Exception;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Validator;
use Illuminate\Support\Facades\Notification;

class SetupEmailController extends Controller
{

    /**
     * Displpay The Email Configuration Page
     * 
     * @return view
     */
    public function configuration() {
        $page_title = "Email Method";
        $email_config = BasicSettings::first()->mail_config;
        return view('admin.sections.setup-email.config',compact(
            'page_title',
            'email_config',
        ));
    }


    /**
     * Display The Email Default Template Page
     * 
     * @return view
     */
    public function defaultTemplate() {
        $page_title = "Default Template";
        return view('admin.sections.setup-email.default-template',compact(
            'page_title',
        ));
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function update(Request $request)
    {

        $validator = Validator::make($request->all(),[
            'method'        => 'required|string|in:smtp,php|max:20',
            'host'          => 'required|string|max:255',
            'port'          => 'required|numeric',
            'encryption'    => 'required|string|in:ssl,tls,auto|max:15',
            'username'      => 'required|string|max:60',
            'mail_address'  => 'required|string|max:60',
            'password'      => 'required|string|max:60'
        ]);

        $validated = $validator->validate();

        $basic_settings = BasicSettings::first();
        if(!$basic_settings) {
            return back()->with(['error' => ['Basic settings not found!']]);
        }

        // Make object of email template
        $data = [
            'method'            => $validated['method'] ?? false,
            'host'              => $validated['host'] ?? false,
            'port'              => $validated['port'] ?? false,
            'encryption'        => $validated['encryption'] ?? false,
            'username'          => $validated['username'] ?? false,
            'password'          => $validated['password'] ?? false,
            'from'              => $validated['username'] ?? false,
            'mail_address'      => $validated['mail_address'] ?? false,
            'app_name'          => $basic_settings['site_name'] ?? env("APP_NAME"),
        ];

        try{ 
            $basic_settings->update([
                'mail_config'       => $data,
            ]);
        }catch(Exception $e) {
            return back()->with(['error' => ['Something went worng! Please try again.']]);
        }

        $env_modify_keys = [
            "MAIL_MAILER"       => $data['method'],
            "MAIL_HOST"         => $data['host'],
            "MAIL_PORT"         => $data['port'],
            "MAIL_USERNAME"     => $data['username'],
            "MAIL_PASSWORD"     => $data['password'],
            "MAIL_ENCRYPTION"   => $data['encryption'],
            "MAIL_FROM_ADDRESS" => $data['mail_address'],
            "MAIL_FROM_NAME"    => $data['app_name'],
        ];


        try{
            modifyEnv($env_modify_keys);
        }catch(Exception $e) {
            return back()->with(['error' => ['Something went worng! Please try again.']]);
        }

        return back()->with(['success' => ['Information updated successfully!']]);
    }


    public function sendTestMail(Request $request) {
        $validator = Validator::make($request->all(),[
            'email'         => 'required|string|email',
        ]);

        $validated = $validator->validate();

        try{
            Notification::route('mail',$validated['email'])->notify(new SendTestMail());
        }catch(Exception $e) {
            return back()->with(['error' => ['Something went worng! Please try again.']]);
        }

        return back()->with(['success' => ['Email send successfully!']]);
    }
}
Path: home/kueuepay/public_html/app/Http/Controllers/Admin
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