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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>Welcome to Biryani Hub</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            background: linear-gradient(135deg, #f4c542, #ff8f6a);
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
        }
        .container {
            background-color: #fff;
            padding: 40px 50px;
            border-radius: 10px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }
        h1 {
            font-size: 32px;
            color: #ff6a00;
        }
        p {
            font-size: 20px;
            color: #333;
        }
        .category-buttons {
            margin-top: 30px;
        }
        .category-buttons button {
            padding: 15px 30px;
            background-color: #ff6a00;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 18px;
        }
        .category-buttons button:hover {
            background-color: #e65c00;
        }
    </style>
</head>
<body>

    <!-- Welcome Page -->
    <div class="container" id="welcomePage">
        <h1>Welcome to Biriyani Hub 🍽</h1>
        <h2 class="info" id="infoMessage">Welcome! Are you a new customer or an existing one?</h2>
        <p class="status" id="status">🔊 Please say 'new' to register or 'existing' to login.</p>
    </div>

    <!-- Registration Form -->
    <div class="container" id="registrationForm" style="display: none;">
        <h2>Register</h2>
        <label for="name">Your Name</label>
        <input type="text" id="name" placeholder="Listening for name..." readonly>

        <label for="email">Your Email</label>
        <input type="text" id="email" placeholder="Listening for email..." readonly>

        <label for="mobile">Your Mobile Number</label>
        <input type="text" id="mobile" placeholder="Listening for mobile number..." readonly>

        <p class="status" id="registrationStatus">Listening... 🗣</p>
    </div>

    <!-- Login Form -->
    <div class="container" id="loginForm" style="display: none;">
        <h2>Login</h2>
        <label for="loginEmail">Your Email</label>
        <input type="text" id="loginEmail" placeholder="Listening for email..." readonly>

        <label for="loginMobile">Your Mobile Number</label>
        <input type="text" id="loginMobile" placeholder="Listening for mobile number..." readonly>

        <p class="status" id="loginStatus">Listening... 🗣</p>
    </div>

    <!-- Confirmation Page -->
    <div class="container" id="confirmationPage" style="display: none;">
        <h2>Confirm Your Details</h2>
        <div class="confirm-details">
            <p class="details"><strong>Name:</strong> <span id="confirmName"></span></p>
            <p class="details"><strong>Email:</strong> <span id="confirmEmail"></span></p>
            <p class="details"><strong>Phone:</strong> <span id="confirmPhone"></span></p>
        </div>
    </div>

    <div id="statusMessage" style="display: none;">
        <h2 id="statusText"></h2>
    </div>

    <script>
        let recognition;
        if ('webkitSpeechRecognition' in window) {
            recognition = new webkitSpeechRecognition();
            recognition.continuous = false;
            recognition.interimResults = false;
            recognition.lang = 'en-US';
        } else {
            alert("Speech Recognition API is not supported in this browser.");
        }
        
        function speak(text, callback) {
            const speech = new SpeechSynthesisUtterance(text);
            speech.onend = callback;
            window.speechSynthesis.speak(speech);
        }

        function askLoginOrRegister() {
            speak("Are you a new customer or an existing customer? Say 'new' to register or 'existing' to login.", function () {
                recognition.start();
                recognition.onresult = function (event) {
                    let response = event.results[0][0].transcript.trim().toLowerCase();
                    recognition.stop();
                    if (response.includes("new")) {
                        captureEmail();
                    } else if (response.includes("existing")) {
                        captureEmail();
                    } else {
                        speak("I didn't understand. Please say 'new' for registration or 'existing' for login.", askLoginOrRegister);
                    }
                };
            });
        }

        function captureEmail() {
            speak("Please say your email address.", function () {
                recognition.start();
                recognition.onresult = function (event) {
                    let emailCaptured = event.results[0][0].transcript.trim();
                    document.getElementById('email').value = emailCaptured;
                    recognition.stop();
                    if (!isValidEmail(emailCaptured)) {
                        speak("The email address is invalid. Please provide a valid email like [email protected].", captureEmail);
                    } else {
                        checkEmailExists(emailCaptured);
                    }
                };
            });
        }

        function isValidEmail(email) {
            return /\S+@\S+\.\S+/.test(email);
        }

        function checkEmailExists(email) {
            fetch(`/check_email?email=${encodeURIComponent(email)}`)
                .then(response => response.json())
                .then(data => {
                    if (data.exists) {
                        speak("Welcome back! You are logged in.");
                        document.getElementById('loginForm').style.display = 'block';
                        document.getElementById('registrationForm').style.display = 'none';
                    } else {
                        speak("You are a new customer. Please proceed with registration.", showRegistrationForm);
                    }
                })
                .catch(() => {
                    speak("Error checking email. Please try again.");
                });
        }

        function showRegistrationForm() {
            document.getElementById('registrationForm').style.display = 'block';
            document.getElementById('loginForm').style.display = 'none';
        }

        function captureMobile() {
            speak("Please say your 12-digit mobile number.", function () {
                recognition.start();
                recognition.onresult = function (event) {
                    let mobileCaptured = event.results[0][0].transcript.trim().replace(/\s+/g, '');
                    document.getElementById('mobile').value = mobileCaptured;
                    recognition.stop();
                    if (!isValidPhone(mobileCaptured)) {
                        speak("The mobile number is invalid. Please provide exactly 12 digits.", captureMobile);
                    } else {
                        speak("You said " + mobileCaptured + ". Is it correct?", function () {
                            confirmMobile(mobileCaptured);
                        });
                    }
                };
            });
        }

        function isValidPhone(phone) {
            return /^\d{12}$/.test(phone);
        }

        function confirmMobile(mobileCaptured) {
            recognition.start();
            recognition.onresult = function (event) {
                let confirmation = event.results[0][0].transcript.trim().toLowerCase();
                recognition.stop();
                if (confirmation.includes("yes") || confirmation.includes("ok")) {
                    showConfirmationPage();
                } else {
                    captureMobile();
                }
            };
        }

        function showConfirmationPage() {
            const name = document.getElementById('name').value;
            const email = document.getElementById('email').value;
            const phone = document.getElementById('mobile').value;
            document.getElementById('confirmName').textContent = name;
            document.getElementById('confirmEmail').textContent = email;
            document.getElementById('confirmPhone').textContent = phone;
            setTimeout(submitRegistration, 6000); 
        }

        function submitRegistration() {
            const name = document.getElementById('name').value;
            const email = document.getElementById('email').value;
            const phone = document.getElementById('mobile').value;
            fetch('/submit', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({ name, email, phone })
            })
            .then(response => response.json())
            .then(data => {
                if (data.success) {
                    document.getElementById('statusText').textContent = `Thank you for registering, ${name}!`;
                    document.getElementById('statusMessage').style.display = 'block';
                    setTimeout(() => {
                        document.getElementById('statusText').textContent = 'Submitted Successfully!';
                        setTimeout(() => {
                            window.location.reload(); 
                        }, 5000);
                    }, 6000);
                } else {
                    document.getElementById('statusText').textContent = 'There was an error submitting your details. Please try again.';
                    document.getElementById('statusMessage').style.display = 'block';
                }
            })
            .catch(error => {
                document.getElementById('statusText').textContent = 'An error occurred. Please try again.';
                document.getElementById('statusMessage').style.display = 'block';
            });
        }

        window.onload = function () {
            askLoginOrRegister();
        };
    </script>
</body>
</html>