Frontend-multi-task/whatsapp.html at main · affancoder/Frontend-multi-task · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>WhatsApp Bulk Message Sender</title>
    <style>
        * { box-sizing: border-box; font-family: Arial, sans-serif; }
        body { background: #f5f5f5; margin: 0; padding: 20px; }
        .container { max-width: 800px; margin: 0 auto; background: white; padding: 20px; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); }
        h1 { color: #25D366; text-align: center; }
        .section { margin-bottom: 20px; padding: 15px; border: 1px solid #ddd; border-radius: 5px; }
        .btn {
            background: #25D366; color: white; border: none; padding: 10px 20px;
            border-radius: 5px; cursor: pointer; margin: 5px 0; display: inline-block;
        }
        .btn:disabled { background: #ccc; cursor: not-allowed; }
        textarea { width: 100%; padding: 10px; margin: 10px 0; min-height: 100px; }
        #status { margin: 10px 0; padding: 10px; border-radius: 5px; display: none; }
        .progress { width: 100%; background: #e0e0e0; border-radius: 5px; margin: 10px 0; height: 10px; display: none; }
        .progress-bar { height: 100%; background: #25D366; width: 0%; transition: width 0.3s; }
    </style>
</head>
<body>
    <div class="container">
        <h1>WhatsApp Bulk Message Sender</h1>

        <div class="section">
            <h3>1. Upload Contacts (CSV/Excel)</h3>
            <input type="file" id="fileInput" accept=".csv, .xlsx, .xls">
            <p><small>File should have 'phone' column (with country code, e.g., +911234567890)</small></p>
            <p id="fileInfo">No file selected</p>
        </div>

        <div class="section">
            <h3>2. Compose Message</h3>
            <p>Use {name} for personalized messages</p>
            <textarea id="message" placeholder="Hello {name}, this is a test message."></textarea>
            <button id="previewBtn" class="btn">Preview Message</button>
            <div id="preview" style="margin-top: 10px; display: none;">
                <strong>Preview:</strong>
                <div id="messagePreview"></div>
            </div>
        </div>

        <div class="section" style="text-align: center;">
            <button id="sendBtn" class="btn" disabled>Send Messages</button>
            <div class="progress">
                <div class="progress-bar" id="progressBar"></div>
            </div>
            <div id="status"></div>
        </div>
    </div>

    <script src="https://cdnjs.cloudflare.com/ajax/libs/xlsx/0.18.5/xlsx.full.min.js"></script>
    <script>
        let contacts = [];

        document.getElementById('fileInput').addEventListener('change', function(e) {
            const file = e.target.files[0];
            if (!file) return;

            document.getElementById('fileInfo').textContent = `Selected: ${file.name}`;

            const reader = new FileReader();
            reader.onload = function(e) {
                try {
                    const data = new Uint8Array(e.target.result);
                    const workbook = XLSX.read(data, { type: 'array' });
                    const firstSheet = workbook.Sheets[workbook.SheetNames[0]];
                    contacts = XLSX.utils.sheet_to_json(firstSheet);

                    if (contacts.length > 0) {
                        document.getElementById('sendBtn').disabled = false;
                        showStatus(`Loaded ${contacts.length} contacts`, 'success');
                    } else {
                        showStatus('No contacts found in file', 'error');
                    }
                } catch (error) {
                    showStatus('Error reading file: ' + error.message, 'error');
                }
            };
            reader.readAsArrayBuffer(file);
        });

        document.getElementById('previewBtn').addEventListener('click', function() {
            const message = document.getElementById('message').value;
            if (!message) {
                showStatus('Please enter a message', 'error');
                return;
            }

            if (contacts.length === 0) {
                showStatus('Please upload contacts first', 'error');
                return;
            }

            const preview = document.getElementById('messagePreview');
            const sampleContact = contacts[0];
            let previewText = message;

            // Replace variables in the message
            Object.keys(sampleContact).forEach(key => {
                const regex = new RegExp(`{${key}}`, 'gi');
                previewText = previewText.replace(regex, sampleContact[key]);
            });

            preview.innerHTML = previewText.replace(/\n/g, '<br>');
            document.getElementById('preview').style.display = 'block';
        });

        document.getElementById('sendBtn').addEventListener('click', async function() {
            const message = document.getElementById('message').value;
            if (!message) {
                showStatus('Please enter a message', 'error');
                return;
            }

            if (contacts.length === 0) {
                showStatus('No contacts to send to', 'error');
                return;
            }

            const progressBar = document.querySelector('.progress');
            const progressBarFill = document.getElementById('progressBar');
            progressBar.style.display = 'block';

            let successCount = 0;
            let failCount = 0;

            for (let i = 0; i < contacts.length; i++) {
                const contact = contacts[i];
                let personalizedMessage = message;

                // Replace variables in the message
                Object.keys(contact).forEach(key => {
                    const regex = new RegExp(`{${key}}`, 'gi');
                    personalizedMessage = personalizedMessage.replace(regex, contact[key]);
                });

                // Format phone number (remove any non-digit characters except +)
                const phone = (contact.phone || '').replace(/[^\d+]/g, '');

                if (!phone) {
                    failCount++;
                    continue;
                }

                // Encode message for URL
                const encodedMessage = encodeURIComponent(personalizedMessage);
                const whatsappUrl = `https://web.whatsapp.com/send?phone=${phone}&text=${encodedMessage}`;

                // Open WhatsApp Web in a new tab
                const newWindow = window.open(whatsappUrl, '_blank');

                // Update progress
                const progress = Math.round(((i + 1) / contacts.length) * 100);
                progressBarFill.style.width = `${progress}%`;
                showStatus(`Sending ${i + 1} of ${contacts.length}...`, 'info');

                // Wait a bit before sending the next message
                await new Promise(resolve => setTimeout(resolve, 3000));

                // Close the tab after a delay
                if (newWindow) {
                    setTimeout(() => {
                        try { newWindow.close(); } catch(e) {}
                    }, 2000);
                }

                successCount++;

                // Add a small delay between messages
                if (i < contacts.length - 1) {
                    await new Promise(resolve => setTimeout(resolve, 1000));
                }
            }

            showStatus(`Sent ${successCount} messages successfully, ${failCount} failed`, 'success');
            progressBarFill.style.width = '100%';
        });

        function showStatus(message, type) {
            const status = document.getElementById('status');
            status.textContent = message;
            status.style.display = 'block';
            status.style.color = type === 'error' ? 'red' : type === 'success' ? 'green' : 'blue';
        }
    </script>
</body>
</html>