<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="{{ url_for('static', filename='css/style.css') }}">
    <link rel="preconnect" href="https://fonts.googleapis.com">
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
    <link href="https://fonts.googleapis.com/css2?family=Parkinsans&display=swap" rel="stylesheet">
    <link rel="icon" type="image/x-icon" href="{{ url_for('static', filename='images/favicon.ico') }}">
    <title>Mail Sender</title>
</head>
<body>
    <div class="content">
        <div class="form">
            <div class="image">
                <img class="email_image" src="{{ url_for('static', filename='images/newsletter.png') }}" alt="">
            </div>
            <h1>Email Sender</h1>
            <form id="mailform" action="/upload" method="post" enctype="multipart/form-data">
                <input class="entier" type="email" name="from" placeholder="From" required>
                <input id="receivers_upload" type="file" name="receivers" accept=".txt" required hidden>
                <label for="receivers_upload" class="button" id="upload_btn">To</label>
                <input class="entier" type="text" name="subject" placeholder="Subject" required>
                <textarea class="area" name="txt" id="txt" placeholder="Text" required></textarea>
                <input id="submit" class="button" type="submit" value="{% if send %} {{ send }} emails sent {% else %} Send {% endif %}">
            </form>
        </div>
    </div> 
</body>
<script>
    const fileInput = document.getElementById('receivers_upload');
    const text = document.getElementById('upload_btn');
    
    fileInput.addEventListener('change', function() {
        const fileName = document.getElementById('receivers_upload').files[0].name;
        text.textContent = fileName;
        text.style.color = "black";
        document.getElementById('submit').textContent =+ " emails sent";   
    });
</script>
</html>