<?php

namespace App\Services\Email;

use Exception;
use App\Services\EmailService;
use PHPMailer\PHPMailer\Exception as PHPMailerException;

/**
 * Email Workflows
 *
 * Contains specialized email sending workflows for specific use cases.
 *
 * @package App\Services\Email
 */
class EmailWorkflows
{
    /**
     * @var EmailService Core email service
     */
    private EmailService $emailService;

    /**
     * EmailWorkflows constructor
     *
     * @param EmailService|null $emailService Optional email service instance
     * @throws PHPMailerException
     */
    public function __construct(?EmailService $emailService = null)
    {
        $this->emailService = $emailService ?? new EmailService();
    }

    /**
     * Send a template-based email
     *
     * @param string|array $to Recipient(s)
     * @param string $subject Email subject
     * @param string $templateName Template name (without .php extension)
     * @param array $variables Variables to pass to the template
     * @param array $attachments Attachments [path => name]
     * @param array $cc CC recipients [email => name]
     * @param array $bcc BCC recipients [email => name]
     * @return bool True if email was sent successfully
     * @throws Exception If email sending fails
     */
    public function sendTemplate(
        string|array $to,
        string       $subject,
        string       $templateName,
        array        $variables = [],
        array        $attachments = [],
        array        $cc = [],
        array        $bcc = []
    ): bool
    {
        // Get the template content
        $body = $this->emailService->getTemplateRenderer()->render($templateName, $variables);

        // Validate HTML structure
        $body = $this->emailService->getHtmlValidator()->validate($body);

        // Generate a plain text version (improved conversion)
        $plainText = $this->emailService->getTemplateRenderer()->htmlToPlainText($body);

        // Send the email
        return $this->emailService->send($to, $subject, $body, $plainText, $attachments, $cc, $bcc);
    }

    /**
     * Send a contact form email
     *
     * @param string $name Sender's name
     * @param string $email Sender's email
     * @param string $subject Email subject
     * @param string $message Email message
     * @param string $toEmail Recipient email
     * @param string $toName Recipient name
     * @return bool True if email was sent successfully
     * @throws Exception If email sending fails
     */
    public function sendContactForm(
        string $name,
        string $email,
        string $subject,
        string $message,
        string $toEmail = '[email protected]',
        string $toName = 'Support Team'
    ): bool
    {
        // Override reply-to with the sender's email
        $this->emailService->setReplyTo($email, $name);

        // Include original sender information in email
        $emailSubject = "Contact Form: " . $subject;

        // Send the email using the template system
        return $this->sendTemplate(
            [$toEmail => $toName],
            $emailSubject,
            'contact_form',
            [
                'name' => $name,
                'email' => $email,
                'subject' => $subject,
                'message' => $message
            ]
        );
    }

    /**
     * Send an auto-reply email to someone who submitted the contact form
     *
     * @param string $name Recipient's name
     * @param string $email Recipient's email
     * @param string $subject Original subject
     * @return bool True if email was sent successfully
     * @throws Exception
     */
    public function sendAutoReply(string $name, string $email, string $subject): bool
    {
        // Reset mailer for a new message
        $this->emailService->resetMailer();

        // Use the template system for the auto-reply
        return $this->sendTemplate(
            $email,
            'Thank you for contacting ' . APP_NAME,
            'contact_auto_reply',
            [
                'name' => $name,
                'subject' => $subject
            ]
        );
    }
}