@{
    ViewData["Title"] = ViewBag.PageTitle;
    Layout = "_Layout";
}

<div class="container-fluid">
    <div class="row">
        <div class="col-12">
            <div class="text-center mb-4">
                <h1 class="display-5">@ViewBag.PageTitle</h1>
                <p class="lead text-muted">@ViewBag.PageDescription</p>
            </div>
        </div>
    </div>

    <div class="row justify-content-center">
        <div class="col-lg-10 col-xl-8">
            <div class="card shadow-sm">
                <div class="card-header bg-primary text-white">
                    <h5 class="mb-0">
                        <i class="bi bi-upc-scan me-2"></i>@ViewBag.DocumentMenuTitle
                    </h5>
                </div>
                <div class="card-body">
                    @if (ViewBag.ConversionError != null)
                    {
                        <div class="alert alert-danger" role="alert">
                            <i class="bi bi-exclamation-triangle-fill me-2"></i>
                            @ViewBag.ConversionError
                        </div>
                    }

                    <ul class="nav nav-tabs mb-4" id="barcodeTabs" role="tablist">
                        <li class="nav-item" role="presentation">
                            <button class="nav-link active" id="detect-tab" data-bs-toggle="tab" data-bs-target="#detect" type="button" role="tab" aria-controls="detect" aria-selected="true">
                                <i class="bi bi-eyeglasses me-2"></i>@ViewBag.PdfBarcodeDetectTabTitle
                            </button>
                        </li>
                        <li class="nav-item" role="presentation">
                            <button class="nav-link" id="download-tab" data-bs-toggle="tab" data-bs-target="#download" type="button" role="tab" aria-controls="download" aria-selected="false">
                                <i class="bi bi-download me-2"></i>@ViewBag.PdfBarcodeDownloadTabTitle
                            </button>
                        </li>
                    </ul>

                    <div class="tab-content" id="barcodeTabContent">
                        <div class="tab-pane fade show active" id="detect" role="tabpanel" aria-labelledby="detect-tab">
                            <form id="detectForm" action="/pt-BR/DocumentConverters/PdfBarcodeLine/DetectLine" method="post" enctype="multipart/form-data" class="needs-validation" novalidate>
                                <div asp-validation-summary="ModelOnly" class="alert alert-danger" role="alert"></div>

                                <div class="mb-4">
                                    <label for="detectPdfFile" class="form-label fw-semibold">@ViewBag.PdfBarcodeFileInputLabel</label>
                                    <input class="form-control" type="file" id="detectPdfFile" name="pdfFile" accept=".pdf" required>
                                    <div class="invalid-feedback">
                                        @ViewBag.SelectFileError
                                    </div>
                                </div>

                                <div class="mb-4">
                                    <label for="detectPassword" class="form-label fw-semibold">@ViewBag.PdfPasswordLabel</label>
                                    <input class="form-control" type="password" id="detectPassword" name="password" placeholder="@ViewBag.PdfPasswordPlaceholder">
                                    <div class="form-text">
                                        <i class="bi bi-shield-lock me-1"></i>@ViewBag.PdfBarcodePasswordHint
                                    </div>
                                </div>

                                <div class="d-grid gap-2">
                                    <button type="button" id="previewDetectBtn" class="btn btn-primary">
                                        <i class="bi bi-upc-scan me-2"></i>@ViewBag.DetectBarcodeButton
                                    </button>
                                    <button type="submit" class="btn btn-outline-secondary">
                                        <i class="bi bi-download me-2"></i>@ViewBag.DownloadBarcodeButton
                                    </button>
                                </div>
                            </form>
                        </div>

                        <div class="tab-pane fade" id="download" role="tabpanel" aria-labelledby="download-tab">
                            <form id="downloadForm" action="/pt-BR/DocumentConverters/PdfBarcodeLine/DownloadLine" method="post" enctype="multipart/form-data" class="needs-validation" novalidate>
                                <div asp-validation-summary="ModelOnly" class="alert alert-danger" role="alert"></div>

                                <div class="mb-4">
                                    <label for="downloadPdfFile" class="form-label fw-semibold">@ViewBag.PdfBarcodeFileInputLabel</label>
                                    <input class="form-control" type="file" id="downloadPdfFile" name="pdfFile" accept=".pdf" required>
                                    <div class="invalid-feedback">
                                        @ViewBag.SelectFileError
                                    </div>
                                </div>

                                <div class="mb-4">
                                    <label for="downloadPassword" class="form-label fw-semibold">@ViewBag.PdfPasswordLabel</label>
                                    <input class="form-control" type="password" id="downloadPassword" name="password" placeholder="@ViewBag.PdfPasswordPlaceholder">
                                    <div class="form-text">
                                        <i class="bi bi-shield-lock me-1"></i>@ViewBag.PdfBarcodePasswordHint
                                    </div>
                                </div>

                                <div class="d-grid gap-2">
                                    <button type="button" id="previewDownloadBtn" class="btn btn-primary">
                                        <i class="bi bi-eye me-2"></i>@ViewBag.DetectBarcodeButton
                                    </button>
                                    <button type="submit" class="btn btn-outline-secondary">
                                        <i class="bi bi-download me-2"></i>@ViewBag.DownloadBarcodeButton
                                    </button>
                                </div>
                            </form>
                        </div>
                    </div>

                    <div id="barcodeLoading" class="text-center my-4" style="display: none;">
                        <div class="spinner-border text-primary" role="status">
                            <span class="visually-hidden">Carregando...</span>
                        </div>
                    </div>

                    <div id="barcodePreview" class="mt-4" style="display: none;">
                        <h5 class="mb-3">@ViewBag.PdfBarcodePreviewTitle</h5>
                        <div class="input-group">
                            <input type="text" id="barcodeResult" class="form-control" readonly>
                            <button id="copyBarcodeBtn" class="btn btn-outline-success" type="button">
                                <i class="bi bi-clipboard-check me-1"></i>@ViewBag.CopyButtonLabel
                            </button>
                        </div>
                        <div class="text-end mt-3">
                            <button id="downloadBarcodeBtn" class="btn btn-success btn-sm">
                                <i class="bi bi-box-arrow-down me-2"></i>@ViewBag.DownloadBarcodeButton
                            </button>
                        </div>
                    </div>

                    <div id="barcodeError" class="mt-4" style="display: none;">
                        <div class="alert alert-warning" role="alert">
                            <i class="bi bi-exclamation-triangle me-2"></i>
                            <span id="barcodeErrorMessage"></span>
                            <button id="fallbackBarcodeBtn" class="btn btn-outline-primary btn-sm ms-2">
                                @ViewBag.DownloadBarcodeButton
                            </button>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <div class="row mt-5">
        <div class="col-lg-10 mx-auto">
            <div class="converter-faq">
                <h3 class="h4 mb-3 text-center">Perguntas Frequentes</h3>
                <div class="accordion" id="barcodeFaqAccordion">
                    <div class="accordion-item">
                        <h2 class="accordion-header" id="barcodeFaqWhat">
                            <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#barcodeCollapseWhat" aria-expanded="false" aria-controls="barcodeCollapseWhat">
                                <i class="bi bi-question-circle me-2"></i>@ViewBag.FaqWhatTitle
                            </button>
                        </h2>
                        <div id="barcodeCollapseWhat" class="accordion-collapse collapse" aria-labelledby="barcodeFaqWhat" data-bs-parent="#barcodeFaqAccordion">
                            <div class="accordion-body">
                                @ViewBag.FaqWhatContent
                            </div>
                        </div>
                    </div>

                    <div class="accordion-item">
                        <h2 class="accordion-header" id="barcodeFaqHow">
                            <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#barcodeCollapseHow" aria-expanded="false" aria-controls="barcodeCollapseHow">
                                <i class="bi bi-gear me-2"></i>@ViewBag.FaqHowTitle
                            </button>
                        </h2>
                        <div id="barcodeCollapseHow" class="accordion-collapse collapse" aria-labelledby="barcodeFaqHow" data-bs-parent="#barcodeFaqAccordion">
                            <div class="accordion-body">
                                @ViewBag.FaqHowContent
                            </div>
                        </div>
                    </div>

                    <div class="accordion-item">
                        <h2 class="accordion-header" id="barcodeFaqWhy">
                            <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#barcodeCollapseWhy" aria-expanded="false" aria-controls="barcodeCollapseWhy">
                                <i class="bi bi-lightbulb me-2"></i>@ViewBag.FaqWhyTitle
                            </button>
                        </h2>
                        <div id="barcodeCollapseWhy" class="accordion-collapse collapse" aria-labelledby="barcodeFaqWhy" data-bs-parent="#barcodeFaqAccordion">
                            <div class="accordion-body">
                                @ViewBag.FaqWhyContent
                            </div>
                        </div>
                    </div>

                    <div class="accordion-item">
                        <h2 class="accordion-header" id="barcodeFaqSecurity">
                            <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#barcodeCollapseSecurity" aria-expanded="false" aria-controls="barcodeCollapseSecurity">
                                <i class="bi bi-shield-check me-2"></i>@ViewBag.FaqSecurityTitle
                            </button>
                        </h2>
                        <div id="barcodeCollapseSecurity" class="accordion-collapse collapse" aria-labelledby="barcodeFaqSecurity" data-bs-parent="#barcodeFaqAccordion">
                            <div class="accordion-body">
                                @ViewBag.FaqSecurityContent
                            </div>
                        </div>
                    </div>

                    <div class="accordion-item">
                        <h2 class="accordion-header" id="barcodeFaqLimits">
                            <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#barcodeCollapseLimits" aria-expanded="false" aria-controls="barcodeCollapseLimits">
                                <i class="bi bi-exclamation-triangle me-2"></i>@ViewBag.FaqLimitsTitle
                            </button>
                        </h2>
                        <div id="barcodeCollapseLimits" class="accordion-collapse collapse" aria-labelledby="barcodeFaqLimits" data-bs-parent="#barcodeFaqAccordion">
                            <div class="accordion-body">
                                @ViewBag.FaqLimitsContent
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<style>
    #barcodeResult {
        font-family: monospace;
    }

    .spinner-border {
        width: 3rem;
        height: 3rem;
    }
</style>

@section Scripts {
    <script>
        (function () {
            const detectForm = document.getElementById('detectForm');
            const downloadForm = document.getElementById('downloadForm');
            const previewDetectBtn = document.getElementById('previewDetectBtn');
            const previewDownloadBtn = document.getElementById('previewDownloadBtn');
            const downloadBarcodeBtn = document.getElementById('downloadBarcodeBtn');
            const fallbackBarcodeBtn = document.getElementById('fallbackBarcodeBtn');
            const copyBarcodeBtn = document.getElementById('copyBarcodeBtn');
            const barcodeLoading = document.getElementById('barcodeLoading');
            const barcodePreview = document.getElementById('barcodePreview');
            const barcodeError = document.getElementById('barcodeError');
            const barcodeResult = document.getElementById('barcodeResult');
            const barcodeErrorMessage = document.getElementById('barcodeErrorMessage');

            let currentLine = '';
            let currentFileName = 'linha-digitavel.txt';

            const forms = document.querySelectorAll('.needs-validation');
            Array.from(forms).forEach(function (form) {
                form.addEventListener('submit', function (event) {
                    if (!form.checkValidity()) {
                        event.preventDefault();
                        event.stopPropagation();
                    }
                    form.classList.add('was-validated');
                });
            });

            previewDetectBtn.addEventListener('click', function () {
                handlePreview(detectForm);
            });

            previewDownloadBtn.addEventListener('click', function () {
                handlePreview(downloadForm);
            });

            downloadBarcodeBtn.addEventListener('click', function () {
                if (!currentLine) {
                    return;
                }
                const blob = new Blob([currentLine + '\n'], { type: 'text/plain;charset=utf-8' });
                const url = window.URL.createObjectURL(blob);
                const anchor = document.createElement('a');
                anchor.href = url;
                anchor.download = currentFileName;
                document.body.appendChild(anchor);
                anchor.click();
                document.body.removeChild(anchor);
                window.URL.revokeObjectURL(url);
            });

            fallbackBarcodeBtn.addEventListener('click', function () {
                const activeTab = document.querySelector('.nav-link.active');
                const currentForm = activeTab.id === 'detect-tab' ? detectForm : downloadForm;
                currentForm.submit();
            });

            copyBarcodeBtn.addEventListener('click', function () {
                if (!currentLine) {
                    return;
                }
                navigator.clipboard.writeText(currentLine).then(function () {
                    copyBarcodeBtn.innerHTML = '<i class="bi bi-clipboard-check-fill me-1"></i>@ViewBag.CopyButtonSuccess';
                    setTimeout(function () {
                        copyBarcodeBtn.innerHTML = '<i class="bi bi-clipboard-check me-1"></i>@ViewBag.CopyButtonLabel';
                    }, 1500);
                });
            });

            function handlePreview(form) {
                if (!form.checkValidity()) {
                    form.classList.add('was-validated');
                    return;
                }

                showLoading();
                const formData = new FormData(form);

                fetch(form.action + '?preview=true', {
                    method: 'POST',
                    body: formData
                }).then(async response => {
                    if (!response.ok) {
                        const text = await response.text();
                        throw new Error(text || response.statusText);
                    }

                    const result = await response.json();
                    if (!result.success) {
                        throw new Error(result.message || 'Erro na conversão');
                    }

                    currentLine = result.content;
                    currentFileName = (form === downloadForm ? 'linha-digitavel-download.txt' : 'linha-digitavel.txt');
                    barcodeResult.value = currentLine;
                    showPreview();
                }).catch(error => {
                    showError(error.message || 'Erro inesperado.');
                });
            }

            function showLoading() {
                barcodeLoading.style.display = 'block';
                barcodePreview.style.display = 'none';
                barcodeError.style.display = 'none';
            }

            function showPreview() {
                barcodeLoading.style.display = 'none';
                barcodeError.style.display = 'none';
                barcodePreview.style.display = 'block';
            }

            function showError(message) {
                barcodeLoading.style.display = 'none';
                barcodePreview.style.display = 'none';
                barcodeErrorMessage.textContent = message;
                barcodeError.style.display = 'block';
            }
        })();
    </script>
}