<?php

namespace App\Http\Controllers;

use App\Services\EmailTemplateService;
use App\Services\MailDeliveryService;
use App\Services\MailSettingsService;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;
use Throwable;

class MailSettingsController extends Controller
{
    public function __construct(
        private readonly MailSettingsService $mailSettings,
        private readonly EmailTemplateService $emailTemplates,
        private readonly MailDeliveryService $mailDelivery
    ) {
    }

    public function index(): View
    {
        return view('mail-settings.index', [
            'settings' => $this->mailSettings->get(),
            'templates' => $this->emailTemplates->all(),
        ]);
    }

    public function updateSmtp(Request $request): RedirectResponse
    {
        $data = $request->validate([
            'mail_mailer' => ['required', 'in:smtp,log,array'],
            'mail_host' => ['required', 'string', 'max:255'],
            'mail_port' => ['required', 'integer', 'min:1', 'max:65535'],
            'mail_username' => ['nullable', 'string', 'max:255'],
            'mail_password' => ['nullable', 'string', 'max:255'],
            'mail_encryption' => ['nullable', 'in:ssl,tls,null,'],
            'mail_from_address' => ['required', 'email', 'max:255'],
            'mail_from_name' => ['required', 'string', 'max:255'],
        ]);

        if (($data['mail_encryption'] ?? '') === 'null' || ($data['mail_encryption'] ?? '') === '') {
            $data['mail_encryption'] = '';
        }

        $this->mailSettings->update($data);
        $request->attributes->set('audit_metadata', [
            'host' => $data['mail_host'],
            'from' => $data['mail_from_address'],
        ]);

        return back()->with('success', 'SMTP settings saved.');
    }

    public function testEmail(Request $request): RedirectResponse
    {
        $data = $request->validate([
            'test_email' => ['required', 'email', 'max:255'],
        ]);

        try {
            $this->mailDelivery->sendTest($data['test_email']);
            $request->attributes->set('audit_metadata', ['recipient' => $data['test_email']]);

            return back()->with('success', 'Test email sent to ' . $data['test_email'] . '.');
        } catch (Throwable) {
            return back()->with('error', 'Failed to send test email. Check SMTP settings.');
        }
    }

    public function updateTemplate(Request $request, string $slug): RedirectResponse
    {
        $data = $request->validate([
            'subject' => ['required', 'string', 'max:255'],
            'body_html' => ['required', 'string', 'max:50000'],
        ]);

        $this->emailTemplates->update($slug, $data['subject'], $data['body_html']);
        $request->attributes->set('audit_metadata', ['template' => $slug]);

        return back()->with('success', 'Email template updated.');
    }

    public function testTemplate(Request $request, string $slug): RedirectResponse
    {
        $allowed = ['password_reset', 'password_changed'];

        if (! in_array($slug, $allowed, true)) {
            return back()->with('error', 'Template preview is not available for this slug.');
        }

        $data = $request->validate([
            'test_email' => ['required', 'email', 'max:255'],
        ]);

        try {
            $this->emailTemplates->get($slug);
            $this->mailDelivery->sendTemplatePreview($data['test_email'], $slug);
            $request->attributes->set('audit_metadata', [
                'template' => $slug,
                'recipient' => $data['test_email'],
            ]);

            return back()->with('success', "Preview [{$slug}] sent to {$data['test_email']}.");
        } catch (Throwable) {
            return back()->with('error', 'Failed to send template preview. Check SMTP settings.');
        }
    }
}