backend/controller/contactController.js

const { checkAndRefreshAccessToken } = require('../utils/refreshToken');
const { checkExistingContactRequest, insertContactRequest } = require('../utils/contactRequestDB');
const fetch = require('node-fetch');
const { sendEmail } = require('../utils/sendEmail');

//Getting Vapi Usage Flag (Whether to use or not)
const { useVapi} = require("../config");

const assistant_url = 'https://api.vapi.ai/call';

const submitContactForm = async (req, res) => {
    const { name, email, phone, subject, message, consent, policyVersion } = req.body;
    console.log('Received contact form submission:', req.body);

    if (!name || !email || !phone || !subject || !message) {
        return res.status(400).send({ error: 'All fields are required.' });
    }

    await checkAndRefreshAccessToken();

    const existingRequest = await checkExistingContactRequest(name, email, subject);
    if (existingRequest) {
        console.log("Your contact request with the same subject is in queue");
        return res.status(400).send({ error: 'Your contact request with the same subject is in queue' });
    }

    await insertContactRequest(name, email, phone, subject, message, consent, policyVersion);
    console.log('Contact request added successfully');

    try{
        // 🔹 Email to User
        const userEmailSubject = `Contact Form Submission: ${subject}`;
        const userEmailContent = `
            <div style="font-family: Arial, sans-serif; color: #333;">
                <center><img src="https://drive.google.com/thumbnail?id=17oMmzl_mTNvohvLhSWHbb_XNPfCC8KaO" alt="Genomatics Logo" height="150px"></center>
                <h2 style="color: #0056b3;">Hello ${name},</h2>
                <p>Thank you for reaching out to us! We have received your message and will get back to you soon.</p>

                <p><strong>Your Submitted Information:</strong></p>
                <p><strong>Name:</strong> ${name}</p>
                <p><strong>Email:</strong> ${email}</p>
                <p><strong>Subject:</strong> ${subject}</p>
                <p><strong>Message:</strong></p>
                <p>${message}</p>
                
                <p>We appreciate your interest and are excited to help you. If you have any immediate questions, please feel free to reply to this email directly.</p>

                <p style="margin-top: 20px;">Best regards,</p>
                <p><strong>The Genomatics Team</strong></p>

                <hr style="border: 0; height: 1px; background: #ddd; margin: 20px 0;">
                <p style="font-size: 12px; color: #666;">
                    This email was sent in response to your contact form submission on the Genomatics platform.
                </p>

                <!-- Social Media Links Section -->
                <div style="margin-top: 30px; text-align: center; display: flex; justify-content: center; align-items: center;">
                    <p>Follow us on social media:</p>
                    <a href="https://x.com/" target="_blank" style="margin: 0 10px;">
                        <img src="https://uxwing.com/wp-content/themes/uxwing/download/brands-and-social-media/x-social-media-white-icon.png" alt="Twitter" width="20" height="20" style="border-radius: 50%; background-color: #3A61B9; padding: 5px;">
                    </a>
                    <a href="https://www.linkedin.com/company/genomatics" target="_blank" style="margin: 0 10px;">
                        <img src="https://img.icons8.com/?size=100&id=102748&format=png&color=FFFFFF" alt="LinkedIn" width="20" height="20" style="border-radius: 50%; background-color: #3A61B9; padding: 5px;">
                    </a>
                </div>
            </div>`;

        await sendEmail(email, userEmailSubject, userEmailContent);
        console.log("Confirmation email sent to user");

        // 🔹 Email to Team
        const teamEmail = process.env.TEAM_MAIL_IDS; 
        const teamEmailSubject = `New Contact Form Submission: ${subject}`;
        const teamEmailContent = `
            <div style="font-family: Arial, sans-serif; color: #333; line-height: 1.6;">
                <center><img src="https://drive.google.com/thumbnail?id=17oMmzl_mTNvohvLhSWHbb_XNPfCC8KaO" alt="Genomatics Logo" height="150px"></center>
                <h2 style="color: #0056b3;">📩 New Contact Request Received</h2>
                <p>Dear Team,</p>
                <p>A new contact form with some general enquiry/request has been submitted. Details are as follows:</p>
                <table style="width: 100%; border-collapse: collapse;">
                    <tr><td style="padding: 8px; font-weight: bold;">Name:</td><td style="padding: 8px;">${name}</td></tr>
                    <tr><td style="padding: 8px; font-weight: bold;">Email:</td><td style="padding: 8px;">${email}</td></tr>
                    <tr><td style="padding: 8px; font-weight: bold;">Phone:</td><td style="padding: 8px;">${phone}</td></tr>
                    <tr><td style="padding: 8px; font-weight: bold;">Subject:</td><td style="padding: 8px;">${subject}</td></tr>
                    <tr><td style="padding: 8px; font-weight: bold;">Message:</td><td style="padding: 8px;">${message}</td></tr>
                </table>
                <p>Please follow up with the requester accordingly.</p>
                <p style="margin-top: 20px;">Best regards,</p>
                <p><strong>Genomatics System</strong></p>
            </div>`;

        await sendEmail(teamEmail, teamEmailSubject, teamEmailContent);
        console.log("Notification email sent to team");

        res.status(200).send({ message: 'Contact message sent successfully!' });
    } catch (error) {
        console.error('Unable to send Contact request confirmation email, however request registered successfully!', error);
        res.status(200).send({ error: 'Unable to send Contact request confirmation email, however request registered successfully!' });
    }

    // 🔹 Vapi AI Call
    const curr_time = new Date().toLocaleDateString('en-GB').replace(/\//g, '-');
    const postData = {
        "name": `${phone}_${curr_time}_CRC`,
        "assistantId": process.env.CONTACT_ASSISTANT_ID,
        "assistantOverrides": {
            "variableValues": {
                "name": name,
                "subject": subject,
                "comments": message
            }
        },
        "customer": { "number": phone },
        "phoneNumberId": process.env.PHONE_NUMBER_ID
    };

    if(useVapi){
        fetch(assistant_url, {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json',
                'Authorization': `Bearer ${process.env.VAPI_KEY}`
            },
            body: JSON.stringify(postData)
        })
        .then(response => response.json())
        .then(data => console.log('Vapi AI Call Success:', data))
        .catch(error => console.error('Vapi AI Call Error:', error));
    }
};

module.exports = { submitContactForm };