@{
    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-file-earmark-text 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="pdfTextTabs" role="tablist">
                        <li class="nav-item" role="presentation">
                            <button class="nav-link active" id="plain-text-tab" data-bs-toggle="tab" data-bs-target="#plain-text" type="button" role="tab" aria-controls="plain-text" aria-selected="true">
                                <i class="bi bi-file-text me-2"></i>@ViewBag.PdfPlainTextTabTitle
                            </button>
                        </li>
                        <li class="nav-item" role="presentation">
                            <button class="nav-link" id="markdown-tab" data-bs-toggle="tab" data-bs-target="#markdown" type="button" role="tab" aria-controls="markdown" aria-selected="false">
                                <i class="bi bi-markdown me-2"></i>@ViewBag.PdfMarkdownTabTitle
                            </button>
                        </li>
                    </ul>

                    <div class="tab-content" id="pdfTextTabContent">
                        <div class="tab-pane fade show active" id="plain-text" role="tabpanel" aria-labelledby="plain-text-tab">
                            <form id="plainTextForm" action="/pt-BR/DocumentConverters/PdfToText/ExtractPlainText" 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="plainTextPdfFile" class="form-label fw-semibold">@ViewBag.PdfFileInputLabel</label>
                                    <input class="form-control" type="file" id="plainTextPdfFile" name="pdfFile" accept=".pdf" required>
                                    <div class="invalid-feedback">
                                        @ViewBag.SelectFileError
                                    </div>
                                </div>

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

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

                        <div class="tab-pane fade" id="markdown" role="tabpanel" aria-labelledby="markdown-tab">
                            <form id="markdownForm" action="/pt-BR/DocumentConverters/PdfToText/ExtractMarkdown" 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="markdownPdfFile" class="form-label fw-semibold">@ViewBag.PdfFileInputLabel</label>
                                    <input class="form-control" type="file" id="markdownPdfFile" name="pdfFile" accept=".pdf" required>
                                    <div class="invalid-feedback">
                                        @ViewBag.SelectFileError
                                    </div>
                                </div>

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

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

                    <div id="loadingSpinner" 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="previewArea" class="mt-4" style="display: none;">
                        <h5 class="mb-3">@ViewBag.PdfTextPreviewTitle</h5>
                        <textarea id="previewTextArea" class="form-control" rows="12" readonly></textarea>
                        <div class="text-end mt-3">
                            <button id="downloadPreviewBtn" class="btn btn-success btn-sm">
                                <i class="bi bi-box-arrow-down me-2"></i>@ViewBag.DownloadPlainTextButton
                            </button>
                        </div>
                    </div>

                    <div id="errorArea" class="mt-4" style="display: none;">
                        <div class="alert alert-warning" role="alert">
                            <i class="bi bi-exclamation-triangle me-2"></i>
                            <span id="errorMessage"></span>
                            <button id="fallbackDownloadBtn" class="btn btn-outline-primary btn-sm ms-2">
                                @ViewBag.DownloadPlainTextButton
                            </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="pdfTextFaqAccordion">
                    <div class="accordion-item">
                        <h2 class="accordion-header" id="faqWhat">
                            <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseWhat" aria-expanded="false" aria-controls="collapseWhat">
                                <i class="bi bi-question-circle me-2"></i>@ViewBag.FaqWhatTitle
                            </button>
                        </h2>
                        <div id="collapseWhat" class="accordion-collapse collapse" aria-labelledby="faqWhat" data-bs-parent="#pdfTextFaqAccordion">
                            <div class="accordion-body">
                                @ViewBag.FaqWhatContent
                            </div>
                        </div>
                    </div>

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

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

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

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

<style>
    #previewTextArea {
        font-family: monospace;
        background-color: #f8f9fa;
    }

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

@section Scripts {
    <script>
        (function () {
            const plainForm = document.getElementById('plainTextForm');
            const markdownForm = document.getElementById('markdownForm');
            const previewPlainBtn = document.getElementById('previewPlainTextBtn');
            const previewMarkdownBtn = document.getElementById('previewMarkdownBtn');
            const downloadPreviewBtn = document.getElementById('downloadPreviewBtn');
            const fallbackDownloadBtn = document.getElementById('fallbackDownloadBtn');
            const loadingSpinner = document.getElementById('loadingSpinner');
            const previewArea = document.getElementById('previewArea');
            const errorArea = document.getElementById('errorArea');
            const previewTextArea = document.getElementById('previewTextArea');
            const errorMessage = document.getElementById('errorMessage');
            const previewTitleButton = document.getElementById('downloadPreviewBtn');

            let previewContent = '';
            let previewFileName = 'resultado.txt';
            let previewMime = 'text/plain';

            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');
                });
            });

            previewPlainBtn.addEventListener('click', function () {
                handlePreview(plainForm, 'text/plain');
            });

            previewMarkdownBtn.addEventListener('click', function () {
                handlePreview(markdownForm, 'text/markdown');
            });

            downloadPreviewBtn.addEventListener('click', function () {
                if (!previewContent) {
                    return;
                }
                const blob = new Blob([previewContent], { type: previewMime + ';charset=utf-8' });
                const url = window.URL.createObjectURL(blob);
                const anchor = document.createElement('a');
                anchor.href = url;
                anchor.download = previewFileName;
                document.body.appendChild(anchor);
                anchor.click();
                document.body.removeChild(anchor);
                window.URL.revokeObjectURL(url);
            });

            fallbackDownloadBtn.addEventListener('click', function () {
                const activeTab = document.querySelector('.nav-link.active');
                const currentForm = activeTab.id === 'plain-text-tab' ? plainForm : markdownForm;
                currentForm.submit();
            });

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

                showLoading();
                const formData = new FormData(form);
                const requestUrl = form.action + '?preview=true';

                console.log('DEBUG: Requesting URL:', requestUrl);
                console.log('DEBUG: Form action:', form.action);

                fetch(requestUrl, {
                    method: 'POST',
                    body: formData
                }).then(async response => {
                    console.log('DEBUG: Response status:', response.status);
                    console.log('DEBUG: Response headers:', response.headers.get('content-type'));

                    const responseText = await response.text();
                    console.log('DEBUG: Response text (first 200 chars):', responseText.substring(0, 200));

                    if (!response.ok) {
                        throw new Error(responseText || response.statusText);
                    }

                    const result = JSON.parse(responseText);
                    if (!result.success) {
                        throw new Error(result.message || 'Erro na conversão');
                    }

                    previewContent = result.content;
                    previewFileName = result.filename;
                    previewMime = mimeType;
                    previewTextArea.value = result.content;
                    previewTitleButton.innerHTML = `<i class="bi bi-box-arrow-down me-2"></i>${result.format === 'markdown' ? '@ViewBag.DownloadMarkdownButton' : '@ViewBag.DownloadPlainTextButton'}`;
                    showPreview();
                }).catch(error => {
                    showError(error.message || 'Erro inesperado.');
                });
            }

            function showLoading() {
                loadingSpinner.style.display = 'block';
                previewArea.style.display = 'none';
                errorArea.style.display = 'none';
            }

            function showPreview() {
                loadingSpinner.style.display = 'none';
                errorArea.style.display = 'none';
                previewArea.style.display = 'block';
            }

            function showError(message) {
                loadingSpinner.style.display = 'none';
                previewArea.style.display = 'none';
                errorMessage.textContent = message;
                errorArea.style.display = 'block';
            }
        })();
    </script>
}