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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>Biryani Hub - Voice Login & Register</title>
    <script>
        let recognition;
        let nameCaptured = "";
        let emailCaptured = "";
        let mobileCaptured = "";

        if ('webkitSpeechRecognition' in window) {
            recognition = new webkitSpeechRecognition();
            recognition.continuous = false;
            recognition.interimResults = false;
            recognition.lang = 'en-US';
        } else {
            alert("Speech Recognition API 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?", function() {
                recognition.start();
                recognition.onresult = function(event) {
                    let response = event.results[0][0].transcript.trim().toLowerCase();
                    recognition.stop();
                    if (response.includes("new")) {
                        checkIfUserExists();
                    } else if (response.includes("existing")) {
                        showLoginForm();
                    } else {
                        speak("Please say 'new' for registration or 'existing' for login.", askLoginOrRegister);
                    }
                };
            });
        }

        function checkIfUserExists() {
            var email = document.getElementById('email').value;
            var phone = document.getElementById('mobile').value;

            fetch('/login', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({ email: email, phone_number: phone })
            })
            .then(response => response.json())
            .then(data => {
                if (data.success) {
                    speak("You are already registered. Logging you in now.");
                    autoLoginSubmit();
                } else {
                    speak("Please provide your details for registration.");
                    showRegistrationForm();
                }
            });
        }

        function showRegistrationForm() {
            speak("Please tell me your name.", startListeningForName);
        }

        function startListeningForName() {
            recognition.start();
            recognition.onresult = function(event) {
                nameCaptured = event.results[0][0].transcript.trim();
                document.getElementById('name').value = nameCaptured;
                recognition.stop();
                speak("You said " + nameCaptured + ". Is it correct?", confirmName);
            };
        }

        function confirmName() {
            recognition.start();
            recognition.onresult = function(event) {
                let confirmation = event.results[0][0].transcript.trim().toLowerCase();
                recognition.stop();
                if (confirmation.includes("ok")) {
                    speak("Now, tell me your email.", startListeningForEmail);
                } else {
                    speak("Let's try again. Tell me your name.", startListeningForName);
                }
            };
        }

        function startListeningForEmail() {
            recognition.start();
            recognition.onresult = function(event) {
                emailCaptured = event.results[0][0].transcript.trim().replace(/\bat\b/g, '@').replace(/\s+/g, '');
                document.getElementById('email').value = emailCaptured;
                recognition.stop();
                speak("You said " + emailCaptured + ". Is it correct?", confirmEmail);
            };
        }

        function confirmEmail() {
            recognition.start();
            recognition.onresult = function(event) {
                let confirmation = event.results[0][0].transcript.trim().toLowerCase();
                recognition.stop();
                if (confirmation.includes("ok")) {
                    speak("Now, tell me your mobile number.", startListeningForMobile);
                } else {
                    speak("Let's try again. Tell me your email.", startListeningForEmail);
                }
            };
        }

        function startListeningForMobile() {
            recognition.start();
            recognition.onresult = function(event) {
                mobileCaptured = event.results[0][0].transcript.trim().replace(/\s+/g, '');
                document.getElementById('mobile').value = mobileCaptured;
                recognition.stop();
                speak("You said " + mobileCaptured + ". Is it correct?", confirmMobile);
            };
        }

        function confirmMobile() {
            recognition.start();
            recognition.onresult = function(event) {
                let confirmation = event.results[0][0].transcript.trim().toLowerCase();
                recognition.stop();
                if (confirmation.includes("ok")) {
                    autoSubmit();
                } else {
                    speak("Let's try again. Tell me your mobile number.", startListeningForMobile);
                }
            };
        }

        function autoSubmit() {
            fetch('/submit', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({ name: nameCaptured, email: emailCaptured, phone: mobileCaptured })
            })
            .then(response => response.json())
            .then(data => {
                if (data.success) {
                    speak("Registration complete. Thank you!");
                } else {
                    speak(data.message);
                }
            });
        }

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