@extends('landing.layout.main')

@section('content')
    <div class="breadcumb-wrapper " data-bg-src="{{ asset('assets/img/breadcumb/breadcumb-bg.jpg') }}">
        <div class="container z-index-common">
            <div class="breadcumb-content">
                <h1 class="breadcumb-title">Pengenalan Huruf</h1>
                <p class="breadcumb-text">Menggunakan Metode CNN (Convolutional Neural Network)</p>
                <div class="breadcumb-menu-wrap">
                    <ul class="breadcumb-menu">
                        <li><a href="/">Home</a></li>
                        <li>Pengenalan Huruf</li>
                    </ul>
                </div>
            </div>
        </div>
    </div>
    <section class="space">
        <div class="container">
            <h2 class="pt-3">Pembelajaran Klasifikasi Huruf</h2>
            <div class="title-divider1"></div>
            <div class="row">
                <div class="col-lg-6">
                    <div class="list-style1">
                        <ul class="list-unstyled mb-0">
                            <li>Mengenali huruf menggunakan Convolutional Neural Networks (CNN)</li>
                            <li>Klasifikasi secara real-time menggunakan kamera</li>
                            <li>Mengunggah gambar untuk identifikasi huruf</li>
                            <li>Laporan hasil klasifikasi yang detail</li>
                        </ul>
                    </div>
                </div>
                <div class="col-lg-6">
                    <div class="list-style1">
                        <ul class="list-unstyled">
                            <li>Interaksi belajar dengan umpan balik langsung</li>
                            <li>Identifikasi huruf dengan akurasi tinggi</li>
                            <li>Antarmuka yang mudah digunakan untuk anak-anak</li>
                            <li>Dukungan pendidikan untuk usia dini</li>
                        </ul>
                    </div>
                </div>
            </div>
            <h2 class="pt-3">Cara Kerja</h2>
            <div class="title-divider1"></div>
            <svg class="svg-hidden">
                <clipPath id="service-clip1" clipPathUnits="objectBoundingBox">
                    <path
                        d="M0.379,0.037 C0.459,-0.006,0.558,-0.006,0.638,0.037 L0.879,0.167 C0.959,0.21,1,0.289,1,0.375 V0.635 C1,0.721,0.959,0.8,0.879,0.843 L0.638,0.973 C0.558,1,0.459,1,0.379,0.973 L0.138,0.843 C0.058,0.8,0.008,0.721,0.008,0.635 V0.375 C0.008,0.289,0.058,0.21,0.138,0.167 L0.379,0.037">
                    </path>
                </clipPath>
            </svg>
            <div class="row mb-3 pb-1 justify-content-center">
                <div class="col-md-6 col-lg-4">
                    <div class="service-style2">
                        <div class="service-icon">
                            <div class="service-shape1"></div>
                            <div class="service-shape2"></div>
                            <div class="service-shape3"></div>
                            <img src="{{ asset('assets/img/icon/sr-2-1.svg') }}" alt="icon">
                        </div>
                        <div class="service-content">
                            <h3 class="service-title"><a class="text-inherit" href="class-details.html">Unggah Gambar</a>
                            </h3>
                            <p class="service-text">Pilih gambar huruf dari perangkat Anda, unggah, dan dapatkan hasil
                                klasifikasi secara instan.</p>
                        </div>
                    </div>
                </div>

                <div class="col-md-6 col-lg-4">
                    <div class="service-style2">
                        <div class="service-icon">
                            <div class="service-shape1"></div>
                            <div class="service-shape2"></div>
                            <div class="service-shape3"></div>
                            <img src="{{ asset('assets/img/icon/sr-2-3.svg') }}" alt="icon">
                        </div>
                        <div class="service-content">
                            <h3 class="service-title"><a class="text-inherit" href="class-details.html">Gunakan Kamera</a>
                            </h3>
                            <p class="service-text">Gunakan kamera perangkat Anda untuk mendeteksi dan mengklasifikasikan
                                huruf secara real-time.</p>
                        </div>
                    </div>
                </div>

            </div>
            {{-- <div class="img-box4">
                <div class="img-1 mega-hover">
                    <img src="{{ asset('assets/img/about/ab-3-1.jpg') }}" alt="about">
                    <a href="https://www.youtube.com/watch?v=_sI_Ps7JSEk" class="play-btn popup-video position-center"><i
                            class="fas fa-play"></i></a>
                </div>
            </div> --}}
            <section class="form-section4 space">
                <div class="container-style4">
                    <!-- Menu Buttons -->
                    <div class="menu-buttons text-center mb-4">
                        <button class="vs-btn form" onclick="showSection('upload-classification')">Klasifikasi Unggah
                            Gambar</button>
                        <button class="vs-btn form" onclick="showSection('live-classification')">Live</button>
                    </div>

                    <!-- Upload Classification Form -->
                    <div class="form-box4 section-content" id="upload-classification">
                        <form id="predictForm" class="form-style4" enctype="multipart/form-data">
                            @csrf
                            @method('POST')
                            <div class="title-area-four form text-center">
                                <h2>Klasifikasi Huruf Melalui Gambar</h2>
                                <span class="sub-title">Unggah gambar untuk klasifikasi huruf</span>
                            </div>
                            <div class="row justify-content-between">
                                <div class="col-md-12 form-group text-center">
                                    <button class="vs-btn form" onclick="document.getElementById('fileInput').click();"
                                        type="button">Pilih Gambar</button>
                                    <input type="file" id="fileInput" name="image" style="display: none;">
                                </div>
                            </div>
                            <div id="result2" class="text-center"></div>
                        </form>
                    </div>

                    <!-- Live Classification Form -->
                    <div class="form-box4 section-content" id="live-classification" style="display: none;">
                        <form class="form-style4">
                            <div class="title-area-four form text-center">
                                <h2>Klasifikasi Huruf Melalui Live Camera</h2>
                                <span class="sub-title">Gunakan kamera untuk klasifikasi huruf secara langsung</span>
                            </div>
                            <div class="row justify-content-between">
                                <div class="col-md-12 form-group text-center">
                                    <label>Toggle Camera</label>
                                    <button class="vs-btn form" id="toggleButton" type="button">Mulai Live
                                        Klasifikasi</button>
                                </div>
                                <div class="col-md-12 form-group text-center">
                                    <label>Pilih Kamera</label>
                                    <select id="cameraSelect"></select>
                                </div>
                                <div class="col-md-12 form-group text-center">
                                    <video id="video" width="100%" height="400px" autoplay></video>
                                    <canvas id="canvas" width="640" height="480" style="display: none;"></canvas>
                                </div>
                                <div id="result" class="text-center"></div>
                            </div>
                        </form>
                    </div>
                </div>
            </section>
            <!-- End form-style4 -->
        </div>
    </section>
@endsection

@section('css')
    <style>
        .menu-buttons .vs-btn {
            margin: 5px;
        }

        .section-content {
            display: none;
        }

        #upload-classification {
            display: block;
        }

        video {
            border-radius: 15px;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
            /* border: 2px solid #ddd; */
        }
    </style>
@endsection


@section('script')
    <script>
        function showSection(sectionId) {
            var sections = document.querySelectorAll('.section-content');
            sections.forEach(function(section) {
                section.style.display = 'none';
            });
            document.getElementById(sectionId).style.display = 'block';
        }
    </script>

    <script>
        const videoElement = document.getElementById('video');
        const canvasElement = document.getElementById('canvas');
        const resultElement = document.getElementById('result');
        const toggleButton = document.getElementById('toggleButton');
        const cameraSelect = document.getElementById('cameraSelect');
        let mediaStream = null;
        let isLiveDetectionActive = false;
        let detectionInterval = null;

        async function getCameraDevices() {
            const devices = await navigator.mediaDevices.enumerateDevices();
            return devices.filter(device => device.kind === 'videoinput');
        }

        async function setupCamera(cameraId) {
            const constraints = {
                video: {
                    deviceId: cameraId,
                    facingMode: 'environment'
                }
            };
            mediaStream = await navigator.mediaDevices.getUserMedia(constraints);
            videoElement.srcObject = mediaStream;
        }

        async function toggleLiveDetection() {
            try {
                if (isLiveDetectionActive) {
                    if (mediaStream) {
                        mediaStream.getTracks().forEach(track => track.stop());
                    }
                    videoElement.srcObject = null;
                    resultElement.style.display = 'none';
                    clearInterval(detectionInterval); // Stop detection interval
                } else {
                    const cameras = await getCameraDevices();
                    if (cameras.length > 0) {
                        await setupCamera(cameras[0].deviceId);
                        videoElement.srcObject = mediaStream;
                        resultElement.style.display = 'block';
                        detectionInterval = setInterval(captureAndSendFrame, 1000); // Start detection interval
                    } else {
                        console.error('No cameras available.');
                    }
                }
                isLiveDetectionActive = !isLiveDetectionActive;
            } catch (error) {
                console.error('Error accessing the camera: ', error);
            }
        }

        toggleButton.addEventListener('click', toggleLiveDetection);

        cameraSelect.addEventListener('change', async (event) => {
            if (mediaStream) {
                mediaStream.getTracks().forEach(track => track.stop());
            }
            await setupCamera(event.target.value);
            videoElement.srcObject = mediaStream;
        });

        async function populateCameraList() {
            const cameras = await getCameraDevices();
            cameras.forEach(camera => {
                const option = document.createElement('option');
                option.value = camera.deviceId;
                option.text = camera.label || `Camera ${camera.deviceId}`;
                cameraSelect.appendChild(option);
            });
        }

        populateCameraList().catch(console.error);

        function captureAndSendFrame() {
            if (!isLiveDetectionActive) return; // Prevent detection if not active
            const canvasContext = canvasElement.getContext('2d');
            canvasContext.drawImage(videoElement, 0, 0, canvasElement.width, canvasElement.height);
            const data = new FormData();
            data.append('image', dataURItoBlob(canvasElement.toDataURL()));

            fetch('http://127.0.0.1:5000/predict/huruf', {
                    method: 'POST',
                    body: data
                })
                .then(response => response.json())
                .then(data => {
                    if (data.prediction) {
                        resultElement.innerHTML =
                            `<div class="alert alert-success alert-dismissible fade show" role="alert"><strong>Hasil Deteksi: </strong>${data.prediction}</div>`;
                    } else {
                        resultElement.innerHTML =
                            `<div class="alert alert-danger alert-dismissible fade show" role="alert"><strong>Hasil Deteksi: </strong>Tidak dapat mendeteksi objek</div>`;
                    }
                })
                .catch(error => {
                    console.error('Error sending frame to API: ', error);
                });
        }

        function dataURItoBlob(dataURI) {
            const byteString = atob(dataURI.split(',')[1]);
            const mimeString = dataURI.split(',')[0].split(':')[1].split(';')[0];
            const ab = new ArrayBuffer(byteString.length);
            const ia = new Uint8Array(ab);
            for (let i = 0; i < byteString.length; i++) {
                ia[i] = byteString.charCodeAt(i);
            }
            return new Blob([ab], {
                type: mimeString
            });
        }

        // Initial hide resultElement
        resultElement.style.display = 'none';

        $(document).ready(function() {

            $('#fileInput').on('change', function() {
                var formData = new FormData($('#predictForm')[0]);
                var resultDiv = $('#result2');
                resultDiv.empty();
                resultDiv.append(`
                        <div class="alert alert-info alert-dismissible fade show">
                    <strong>Info!</strong> Sedang memproses gambar...
                </div>


                    `);

                $.ajax({
                    type: 'POST',
                    url: '/predict/huruf', // Ubah URL ini jika perlu
                    data: formData,
                    contentType: false,
                    processData: false,
                    success: function(response) {
                        var hasil = response.hasil;
                        var gambar = response.gambar;


                        // Clear previous results
                        resultDiv.empty();

                        if (hasil) {
                            resultDiv.append(`
                        <img height="200px" width="200px" src="{{ asset('images/angka/') }}/${gambar}" alt="" style="border-radius: 15px;">
                        <br><br>
                        <div class="alert alert-info alert-dismissible fade show" role="alert"><strong>Hasil Deteksi: </strong>${hasil}</div>
                    `);
                        } else {
                            resultDiv.append(`
                        <div class="alert alert-info alert-dismissible fade show" role="alert"><strong>Hasil Deteksi: </strong>Tidak dapat mendeteksi objek</div>
                    `);
                        }
                    },
                    error: function(xhr, status, error) {
                        console.error(xhr.responseText);
                        resultDiv.append(`
                        <div class="alert alert-info alert-dismissible fade show" role="alert"><strong>Terjadi Kesalahan </strong></div>
                    `);
                    }
                });
            });
        });
    </script>
@endsection