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stegasoo/frontends/web/templates/encode.html
2026-01-02 15:45:43 -05:00

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{% extends "base.html" %}
{% block title %}Encode Message - Stegasoo{% endblock %}
{% block content %}
<style>
/* Glowing passphrase input */
.passphrase-input-container {
position: relative;
}
.passphrase-input {
background: rgba(30, 40, 50, 0.8) !important;
border: 2px solid rgba(99, 179, 237, 0.3) !important;
color: #63b3ed !important;
font-family: 'Courier New', monospace;
font-size: 1.1rem;
letter-spacing: 0.5px;
padding: 12px 16px;
transition: border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}
.passphrase-input:focus {
border-color: rgba(99, 179, 237, 0.8) !important;
box-shadow: 0 0 20px rgba(99, 179, 237, 0.4), 0 0 40px rgba(99, 179, 237, 0.2) !important;
background: rgba(30, 40, 50, 0.95) !important;
}
.passphrase-input::placeholder {
color: rgba(99, 179, 237, 0.4);
}
/* Glowing PIN input */
.pin-input-container .form-control {
background: rgba(30, 40, 50, 0.8) !important;
border: 2px solid rgba(246, 173, 85, 0.3) !important;
color: #f6ad55 !important;
font-family: 'Courier New', monospace;
font-size: 1.2rem;
letter-spacing: 3px;
text-align: center;
transition: all 0.3s ease;
}
.pin-input-container .form-control:focus {
border-color: rgba(246, 173, 85, 0.8) !important;
box-shadow: 0 0 20px rgba(246, 173, 85, 0.4), 0 0 40px rgba(246, 173, 85, 0.2) !important;
background: rgba(30, 40, 50, 0.95) !important;
}
.pin-input-container .form-control::placeholder {
color: rgba(246, 173, 85, 0.4);
letter-spacing: 1px;
}
/* QR Crop Animation */
.qr-crop-container {
position: relative;
overflow: hidden;
border-radius: 8px;
background: rgba(0, 0, 0, 0.3);
}
.qr-crop-container img {
display: block;
max-height: 180px;
max-width: 180px;
width: auto;
margin: 0 auto;
transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.qr-crop-container .qr-original {
opacity: 1;
}
.qr-crop-container .qr-cropped {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%) scale(0.3);
opacity: 0;
max-height: 160px;
min-width: 140px;
min-height: 140px;
object-fit: contain;
}
.qr-crop-container.scan-complete .qr-original {
opacity: 0;
transform: scale(1.1);
filter: blur(4px);
}
.qr-crop-container.scan-complete .qr-cropped {
opacity: 1;
transform: translate(-50%, -50%) scale(1);
}
.qr-crop-container .crop-badge {
position: absolute;
bottom: 4px;
right: 4px;
font-size: 0.65rem;
opacity: 0;
transition: opacity 0.3s ease 0.4s;
}
.qr-crop-container.scan-complete .crop-badge {
opacity: 1;
}
</style>
<div class="row justify-content-center">
<div class="col-lg-8">
<div class="card">
<div class="card-header">
<h5 class="mb-0"><i class="bi bi-lock-fill me-2"></i>Encode Secret Message or File</h5>
</div>
<div class="card-body">
<form method="POST" enctype="multipart/form-data" id="encodeForm">
<!-- Removed client_date hidden field -->
<div class="row">
<div class="col-md-6 mb-3">
<label class="form-label">
<i class="bi bi-image me-1"></i> Reference Photo
</label>
<div class="drop-zone scan-container" id="refDropZone">
<input type="file" name="reference_photo" accept="image/*" required>
<div class="drop-zone-label">
<i class="bi bi-cloud-arrow-up fs-3 d-block mb-2 text-muted"></i>
<span class="text-muted">Drop image or click to browse</span>
</div>
<img class="drop-zone-preview d-none" id="refPreview">
<!-- Scan overlay elements -->
<div class="scan-overlay">
<div class="scan-grid"></div>
<div class="scan-line"></div>
</div>
<!-- Corner brackets (shown after scan) -->
<div class="scan-corners">
<div class="scan-corner tl"></div>
<div class="scan-corner tr"></div>
<div class="scan-corner bl"></div>
<div class="scan-corner br"></div>
</div>
<!-- Data panel (shown after scan) -->
<div class="scan-data-panel">
<div class="scan-data-filename">
<i class="bi bi-check-circle-fill"></i>
<span id="refFileName">image.jpg</span>
</div>
<div class="scan-data-row">
<span class="scan-status-badge">Hash Acquired</span>
<span class="scan-data-value" id="refFileSize">--</span>
</div>
<div class="scan-hash-preview" id="refHashPreview">SHA256: ················</div>
</div>
</div>
<div class="form-text">
The secret photo both parties have (NOT transmitted)
</div>
</div>
<div class="col-md-6 mb-3">
<label class="form-label">
<i class="bi bi-file-image me-1"></i> Carrier Image
</label>
<div class="drop-zone pixel-container" id="carrierDropZone">
<input type="file" name="carrier" accept="image/*" required id="carrierInput">
<div class="drop-zone-label">
<i class="bi bi-cloud-arrow-up fs-3 d-block mb-2 text-muted"></i>
<span class="text-muted">Drop image or click to browse</span>
</div>
<img class="drop-zone-preview d-none" id="carrierPreview">
<!-- Pixel blocks overlay - populated by JS -->
<div class="pixel-blocks"></div>
<!-- Pixel scan line -->
<div class="pixel-scan-line"></div>
<!-- Corner brackets -->
<div class="pixel-corners">
<div class="pixel-corner tl"></div>
<div class="pixel-corner tr"></div>
<div class="pixel-corner bl"></div>
<div class="pixel-corner br"></div>
</div>
<!-- Data panel -->
<div class="pixel-data-panel">
<div class="pixel-data-filename">
<i class="bi bi-check-circle-fill"></i>
<span id="carrierFileName">image.jpg</span>
</div>
<div class="pixel-data-row">
<span class="pixel-status-badge">Carrier Loaded</span>
<span class="pixel-data-value" id="carrierFileSize">--</span>
</div>
<div class="pixel-dimensions" id="carrierDims">-- × -- px</div>
</div>
</div>
<div class="form-text">
The image to hide your message in (e.g., a meme)
</div>
</div>
</div>
<!-- Capacity Info Panel (shown when carrier loaded) -->
<div class="alert alert-info small d-none" id="capacityPanel">
<div class="row align-items-center">
<div class="col">
<i class="bi bi-rulers me-1"></i>
<strong>Carrier:</strong> <span id="carrierDimensions">-</span>
</div>
<div class="col-auto">
<span class="badge bg-warning text-dark me-1" id="dctCapacityBadge">DCT: -</span>
<span class="badge bg-primary" id="lsbCapacityBadge">LSB: -</span>
</div>
</div>
</div>
<!-- Embedding Mode Selection -->
<div class="mb-4">
<label class="form-label">
<i class="bi bi-cpu me-1"></i> Embedding Mode
</label>
<div class="d-flex gap-2">
<!-- DCT Mode -->
<label class="mode-btn flex-fill {% if not has_dct %}opacity-50{% endif %} {% if has_dct %}active{% endif %}" id="dctModeCard" for="modeDct">
<input class="form-check-input" type="radio" name="embed_mode" id="modeDct" value="dct" {% if has_dct %}checked{% endif %} {% if not has_dct %}disabled{% endif %}>
<i class="bi bi-soundwave text-warning ms-2"></i>
<span class="ms-2"><strong>DCT</strong> <span class="text-muted">· Social Media</span></span>
<i class="bi bi-info-circle text-muted mode-info-icon ms-2" data-bs-toggle="tooltip" data-bs-html="true" title="<b>DCT Mode</b><br>• JPEG output<br>• Survives recompression<br>• ~75 KB/MP capacity"></i>
{% if not has_dct %}
<span class="small text-warning ms-2"><i class="bi bi-exclamation-triangle me-1"></i>Requires scipy</span>
{% endif %}
</label>
<!-- LSB Mode -->
<label class="mode-btn flex-fill {% if not has_dct %}active{% endif %}" id="lsbModeCard" for="modeLsb">
<input class="form-check-input" type="radio" name="embed_mode" id="modeLsb" value="lsb" {% if not has_dct %}checked{% endif %}>
<i class="bi bi-grid-3x3-gap text-primary ms-2"></i>
<span class="ms-2"><strong>LSB</strong> <span class="text-muted">· Email & Files</span></span>
<i class="bi bi-info-circle text-muted mode-info-icon ms-2" data-bs-toggle="tooltip" data-bs-html="true" title="<b>LSB Mode</b><br>• Full color PNG output<br>• Higher capacity (~375 KB/MP)"></i>
</label>
</div>
</div>
<!-- Payload Type Selector -->
<div class="mb-3">
<label class="form-label">
<i class="bi bi-box me-1"></i> What to Encode
</label>
<div class="btn-group w-100" role="group">
<input type="radio" class="btn-check" name="payload_type" id="payloadText" value="text" checked>
<label class="btn btn-outline-primary" for="payloadText">
<i class="bi bi-chat-left-text me-1"></i> Text Message
</label>
<input type="radio" class="btn-check" name="payload_type" id="payloadFile" value="file">
<label class="btn btn-outline-primary" for="payloadFile">
<i class="bi bi-file-earmark me-1"></i> File
</label>
</div>
</div>
<!-- Text Message Input -->
<div class="mb-3" id="textPayloadSection">
<label class="form-label">
<i class="bi bi-chat-left-text me-1"></i> Secret Message
</label>
<textarea name="message" class="form-control" rows="4" id="messageInput"
placeholder="Enter your secret message here..."></textarea>
<div class="d-flex justify-content-between form-text">
<span>
<span id="charCount">0</span> / 250,000 characters
<span id="charWarning" class="text-warning d-none ms-2">
<i class="bi bi-exclamation-triangle"></i> Getting long!
</span>
</span>
<span id="charPercent" class="text-muted">0%</span>
</div>
</div>
<!-- File Upload Input -->
<div class="mb-3 d-none" id="filePayloadSection">
<label class="form-label">
<i class="bi bi-file-earmark me-1"></i> File to Embed
</label>
<div class="drop-zone" id="payloadDropZone">
<input type="file" name="payload_file" id="payloadFileInput">
<div class="drop-zone-label" id="payloadDropLabel">
<i class="bi bi-cloud-arrow-up fs-3 d-block mb-2 text-muted"></i>
<span class="text-muted">Drop any file or click to browse</span>
<div class="small text-muted mt-1">Max {{ max_payload_kb }} KB</div>
</div>
</div>
<div class="form-text">
Supports any file type: PDF, ZIP, documents, etc.
</div>
<div id="fileInfo" class="d-none mt-2 p-2 bg-dark rounded">
<i class="bi bi-file-earmark-check text-success me-2"></i>
<span id="fileInfoName"></span>
<span class="text-muted">(<span id="fileInfoSize"></span>)</span>
</div>
</div>
<!-- Passphrase input with glow styling -->
<div class="mb-3">
<label class="form-label" id="passphraseLabel">
<i class="bi bi-chat-quote me-1"></i> Passphrase
</label>
<div class="passphrase-input-container">
<input type="text" name="passphrase" class="form-control passphrase-input"
placeholder="e.g., apple forest thunder mountain" required
id="passphraseInput">
</div>
<div class="form-text">
Your passphrase for this message
</div>
<div class="form-text mt-1" id="passphraseWarning" style="display: none;">
<i class="bi bi-exclamation-triangle text-warning me-1"></i>
Passphrase should have at least {{ recommended_passphrase_words }} words for good security
</div>
</div>
<hr class="my-4">
<h6 class="text-muted mb-3">
SECURITY FACTORS
<span class="text-warning small">(provide at least one: PIN or RSA Key)</span>
</h6>
<div class="row">
<div class="col-md-4 mb-3">
<div class="security-box">
<label class="form-label"><i class="bi bi-123 me-1"></i> PIN</label>
<div class="input-group pin-input-container">
<input type="password" name="pin" class="form-control" id="pinInput" placeholder="••••••" maxlength="9" style="max-width: 180px;">
<button class="btn btn-outline-secondary" type="button" data-toggle-password="pinInput">
<i class="bi bi-eye"></i>
</button>
</div>
<div class="form-text">Static 6-9 digit PIN</div>
</div>
</div>
<div class="col-md-8 mb-3">
<div class="security-box">
<label class="form-label">
<i class="bi bi-file-earmark-lock me-1"></i> RSA Key
</label>
<!-- RSA Input Method Toggle -->
<div class="btn-group w-100 mb-2" role="group">
<input type="radio" class="btn-check" name="rsa_input_method" id="rsaMethodFile" value="file" checked>
<label class="btn btn-outline-secondary btn-sm" for="rsaMethodFile">
<i class="bi bi-file-earmark me-1"></i>.pem File
</label>
<input type="radio" class="btn-check" name="rsa_input_method" id="rsaMethodQr" value="qr">
<label class="btn btn-outline-secondary btn-sm" for="rsaMethodQr">
<i class="bi bi-qr-code me-1"></i>QR Code
</label>
</div>
<!-- .pem File Input -->
<div id="rsaFileSection">
<input type="file" name="rsa_key" class="form-control form-control-sm" accept=".pem">
</div>
<!-- QR Code Input -->
<div id="rsaQrSection" class="d-none">
<div class="drop-zone p-3" id="qrDropZone">
<input type="file" name="rsa_key_qr" accept="image/*" id="rsaQrInput">
<div class="drop-zone-label text-center">
<i class="bi bi-qr-code-scan fs-4 d-block text-muted mb-1"></i>
<span class="text-muted small">Drop QR image or click to browse</span>
</div>
<!-- Crop animation container -->
<div class="qr-scan-container qr-crop-container d-none" id="qrCropContainer">
<img class="qr-original" id="qrOriginal" alt="Original">
<img class="qr-cropped" id="qrCropped" alt="Cropped QR">
<!-- Data panel -->
<div class="qr-data-panel">
<div class="qr-data-filename">
<i class="bi bi-check-circle-fill"></i>
<span>RSA Key loaded</span>
</div>
<div class="qr-data-row">
<span class="qr-status-badge">RSA Key</span>
<span class="qr-data-value">--</span>
</div>
</div>
</div>
</div>
</div>
<!-- Key Password (always visible) -->
<div class="input-group input-group-sm mt-2">
<input type="password" name="rsa_password" class="form-control" id="rsaPasswordInput" placeholder="Key password (if encrypted)">
<button class="btn btn-outline-secondary" type="button" data-toggle-password="rsaPasswordInput">
<i class="bi bi-eye"></i>
</button>
</div>
</div>
</div>
</div>
<!-- ================================================================
CHANNEL KEY (v4.0.0) - Deployment/Group Isolation
================================================================ -->
<div class="mb-4">
<div class="security-box">
<label class="form-label">
<i class="bi bi-broadcast me-1"></i> Channel
<span class="badge bg-info ms-1">v4.0</span>
</label>
<div class="d-flex gap-2">
<!-- Auto Mode -->
<label class="mode-btn flex-fill {% if channel_configured %}active{% endif %}" id="channelAutoCard" for="channelAuto">
<input class="form-check-input" type="radio" name="channel_key" id="channelAuto" value="auto" checked>
<i class="bi bi-gear-fill {% if channel_configured %}text-success{% else %}text-secondary{% endif %} ms-2"></i>
<span class="ms-2"><strong>Auto</strong> <span class="text-muted d-none d-sm-inline">· {% if channel_configured %}Server Key{% else %}Public{% endif %}</span></span>
</label>
<!-- Public Mode -->
<label class="mode-btn flex-fill" id="channelPublicCard" for="channelPublic">
<input class="form-check-input" type="radio" name="channel_key" id="channelPublic" value="none">
<i class="bi bi-globe text-info ms-2"></i>
<span class="ms-2"><strong>Public</strong> <span class="text-muted d-none d-sm-inline">· No key</span></span>
</label>
<!-- Custom Key -->
<label class="mode-btn flex-fill" id="channelCustomCard" for="channelCustom">
<input class="form-check-input" type="radio" name="channel_key" id="channelCustom" value="custom">
<i class="bi bi-key-fill text-warning ms-2"></i>
<span class="ms-2"><strong>Custom</strong></span>
</label>
</div>
<!-- Server channel indicator (compact) -->
{% if channel_configured %}
<div class="small text-success mt-2" id="channelServerInfo">
<i class="bi bi-shield-lock me-1"></i>
Server: <code>{{ channel_fingerprint }}</code>
</div>
{% endif %}
<!-- Custom key input -->
<div class="mt-2 d-none" id="channelCustomInput">
<div class="input-group input-group-sm">
<span class="input-group-text"><i class="bi bi-key"></i></span>
<input type="text" name="channel_key_custom" class="form-control font-monospace"
placeholder="XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX"
pattern="[A-Za-z0-9]{4}(-[A-Za-z0-9]{4}){7}"
id="channelKeyInput">
<button class="btn btn-outline-secondary" type="button" id="channelKeyGenerate" title="Generate random key">
<i class="bi bi-shuffle"></i>
</button>
</div>
<div class="invalid-feedback" id="channelKeyError">
Invalid format. Use: XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX
</div>
</div>
</div>
</div>
<!-- Advanced Options (DCT sub-options only) -->
<div class="mb-4 {% if not has_dct %}d-none{% endif %}" id="advancedOptionsContainer">
<a class="btn btn-sm btn-outline-secondary w-100" data-bs-toggle="collapse" href="#advancedOptions" role="button" aria-expanded="false">
<i class="bi bi-gear me-1"></i> DCT Options
<i class="bi bi-chevron-down ms-1" id="advancedChevron"></i>
</a>
<div class="collapse" id="advancedOptions">
<div class="card card-body mt-2 bg-dark border-secondary py-3">
<!-- DCT Color Mode - Compact -->
<div class="mb-3">
<label class="form-label small mb-2">
<i class="bi bi-palette me-1"></i> Color
</label>
<div class="d-flex gap-2">
<label class="mode-btn equal-width active" id="dctColorCard" for="dctColorColor">
<input class="form-check-input" type="radio" name="dct_color_mode" id="dctColorColor" value="color" checked>
<i class="bi bi-palette-fill text-success"></i>
<span class="ms-2"><strong>Color</strong> <span class="badge bg-success ms-1">Default</span></span>
</label>
<label class="mode-btn equal-width" id="dctGrayscaleCard" for="dctColorGrayscale">
<input class="form-check-input" type="radio" name="dct_color_mode" id="dctColorGrayscale" value="grayscale">
<i class="bi bi-circle-half text-secondary"></i>
<span class="ms-2"><strong>Grayscale</strong></span>
</label>
</div>
</div>
<!-- DCT Output Format - Compact -->
<div class="mb-0">
<label class="form-label small mb-2">
<i class="bi bi-file-image me-1"></i> Format
</label>
<div class="d-flex gap-2">
<label class="mode-btn equal-width active" id="dctJpegCard" for="dctFormatJpeg">
<input class="form-check-input" type="radio" name="dct_output_format" id="dctFormatJpeg" value="jpeg" checked>
<i class="bi bi-file-earmark-richtext text-warning"></i>
<span class="ms-2"><strong>JPEG</strong> <span class="badge bg-warning text-dark ms-1">Default</span></span>
</label>
<label class="mode-btn equal-width" id="dctPngCard" for="dctFormatPng">
<input class="form-check-input" type="radio" name="dct_output_format" id="dctFormatPng" value="png">
<i class="bi bi-file-earmark-image text-primary"></i>
<span class="ms-2"><strong>PNG</strong> <span class="text-muted d-none d-sm-inline">· Lossless</span></span>
</label>
</div>
</div>
</div>
</div>
</div>
<button type="submit" class="btn btn-primary btn-lg w-100" id="encodeBtn">
<i class="bi bi-lock me-2"></i>Encode
</button>
</form>
<hr class="my-4">
<div class="row text-center text-muted small">
<div class="col-4">
<i class="bi bi-shield-check fs-4 d-block mb-1 text-success"></i>
AES-256-GCM Encryption
</div>
<div class="col-4">
<i class="bi bi-shuffle fs-4 d-block mb-1 text-info"></i>
Random Pixel Embedding
</div>
<div class="col-4">
<i class="bi bi-eye-slash fs-4 d-block mb-1 text-warning"></i>
Undetectable by Analysis
</div>
</div>
<div class="alert alert-secondary mt-4 small">
<i class="bi bi-info-circle me-1"></i>
<strong>Limits:</strong>
Carrier image max ~24 megapixels (6000x4000).
Files max 30MB upload.
Payload max {{ max_payload_kb }} KB.
</div>
</div>
</div>
</div>
</div>
{% endblock %}
{% block scripts %}
<script src="{{ url_for('static', filename='js/stegasoo.js') }}"></script>
<script>
// ============================================================================
// ENCODE PAGE - Payload type switching
// ============================================================================
const payloadTextRadio = document.getElementById('payloadText');
const payloadFileRadio = document.getElementById('payloadFile');
const textSection = document.getElementById('textPayloadSection');
const fileSection = document.getElementById('filePayloadSection');
const messageInput = document.getElementById('messageInput');
const payloadFileInput = document.getElementById('payloadFileInput');
function updatePayloadSection() {
const isText = payloadTextRadio.checked;
textSection.classList.toggle('d-none', !isText);
fileSection.classList.toggle('d-none', isText);
if (isText) {
messageInput.setAttribute('required', '');
payloadFileInput.removeAttribute('required');
} else {
messageInput.removeAttribute('required');
payloadFileInput.setAttribute('required', '');
}
}
payloadTextRadio?.addEventListener('change', updatePayloadSection);
payloadFileRadio?.addEventListener('change', updatePayloadSection);
// ============================================================================
// ENCODE PAGE - Passphrase validation
// ============================================================================
const passphraseInput = document.getElementById('passphraseInput');
const passphraseWarning = document.getElementById('passphraseWarning');
passphraseInput?.addEventListener('input', function() {
const words = this.value.trim().split(/\s+/).filter(w => w.length > 0);
const recommendedWords = {{ recommended_passphrase_words }};
if (passphraseWarning) {
passphraseWarning.style.display = (words.length > 0 && words.length < recommendedWords) ? 'block' : 'none';
}
});
// ============================================================================
// ENCODE PAGE - Payload file info
// ============================================================================
payloadFileInput?.addEventListener('change', function() {
const fileInfo = document.getElementById('fileInfo');
const fileInfoName = document.getElementById('fileInfoName');
const fileInfoSize = document.getElementById('fileInfoSize');
if (this.files && this.files[0]) {
const file = this.files[0];
fileInfo?.classList.remove('d-none');
if (fileInfoName) fileInfoName.textContent = file.name;
if (fileInfoSize) fileInfoSize.textContent = (file.size / 1024).toFixed(1) + ' KB';
const label = document.getElementById('payloadDropLabel');
if (label) label.innerHTML = `<i class="bi bi-check-circle text-success me-1"></i>${file.name}`;
} else {
fileInfo?.classList.add('d-none');
}
});
// ============================================================================
// ENCODE PAGE - Character counter
// ============================================================================
messageInput?.addEventListener('input', function() {
const count = this.value.length;
const max = 250000;
const percent = Math.round((count / max) * 100);
const charCount = document.getElementById('charCount');
const charPercent = document.getElementById('charPercent');
const charWarning = document.getElementById('charWarning');
if (charCount) charCount.textContent = count.toLocaleString();
if (charPercent) charPercent.textContent = percent + '%';
charWarning?.classList.toggle('d-none', percent < 80);
});
// ============================================================================
// ENCODE PAGE - Carrier capacity
// ============================================================================
const capacityPanel = document.getElementById('capacityPanel');
const carrierInput = document.getElementById('carrierInput');
carrierInput?.addEventListener('change', function() {
if (this.files && this.files[0]) {
fetchCapacityComparison(this.files[0]);
}
});
function fetchCapacityComparison(file) {
const formData = new FormData();
formData.append('carrier', file);
fetch('/api/compare-capacity', {
method: 'POST',
body: formData
})
.then(response => response.json())
.then(data => {
if (data.error) return;
const dims = document.getElementById('carrierDimensions');
const lsbBadge = document.getElementById('lsbCapacityBadge');
const dctBadge = document.getElementById('dctCapacityBadge');
if (dims) dims.textContent = `${data.width} × ${data.height} (${(data.width * data.height / 1000000).toFixed(1)} MP)`;
if (lsbBadge) lsbBadge.textContent = `LSB: ${data.lsb.capacity_kb} KB`;
if (dctBadge) dctBadge.textContent = `DCT: ${data.dct.capacity_kb} KB`;
capacityPanel?.classList.remove('d-none');
})
.catch(err => console.error('Capacity fetch failed:', err));
}
// ============================================================================
// ENCODE PAGE - Mode switching (LSB/DCT)
// ============================================================================
// Initialize tooltips for mode info icons
document.querySelectorAll('[data-bs-toggle="tooltip"]').forEach(el => {
new bootstrap.Tooltip(el);
});
// Mode button active state toggle
const modeRadios = document.querySelectorAll('input[name="embed_mode"]');
const modeBtns = { 'dct': document.getElementById('dctModeCard'), 'lsb': document.getElementById('lsbModeCard') };
modeRadios.forEach(radio => {
radio.addEventListener('change', () => {
Object.values(modeBtns).forEach(btn => btn?.classList.remove('active'));
modeBtns[radio.value]?.classList.add('active');
});
});
// Show/hide DCT options
const modeDct = document.getElementById('modeDct');
const advancedOptionsContainer = document.getElementById('advancedOptionsContainer');
document.querySelectorAll('input[name="embed_mode"]').forEach(radio => {
radio.addEventListener('change', () => {
advancedOptionsContainer?.classList.toggle('d-none', !modeDct?.checked);
});
});
// DCT color mode button active state toggle
const colorModeRadios = document.querySelectorAll('input[name="dct_color_mode"]');
const colorModeBtns = { 'color': document.getElementById('dctColorCard'), 'grayscale': document.getElementById('dctGrayscaleCard') };
colorModeRadios.forEach(radio => {
radio.addEventListener('change', () => {
Object.values(colorModeBtns).forEach(btn => btn?.classList.remove('active'));
colorModeBtns[radio.value]?.classList.add('active');
});
});
// DCT format button active state toggle
const formatRadios = document.querySelectorAll('input[name="dct_output_format"]');
const formatBtns = { 'png': document.getElementById('dctPngCard'), 'jpeg': document.getElementById('dctJpegCard') };
formatRadios.forEach(radio => {
radio.addEventListener('change', () => {
Object.values(formatBtns).forEach(btn => btn?.classList.remove('active'));
formatBtns[radio.value]?.classList.add('active');
});
});
// Advanced options chevron
const advancedOptionsEl = document.getElementById('advancedOptions');
advancedOptionsEl?.addEventListener('show.bs.collapse', () => {
document.getElementById('advancedChevron')?.classList.replace('bi-chevron-down', 'bi-chevron-up');
});
advancedOptionsEl?.addEventListener('hide.bs.collapse', () => {
document.getElementById('advancedChevron')?.classList.replace('bi-chevron-up', 'bi-chevron-down');
});
// ============================================================================
// ENCODE PAGE - Duplicate file check
// ============================================================================
function checkDuplicateFiles() {
const refInput = document.querySelector('input[name="reference_photo"]');
const carInput = document.querySelector('input[name="carrier"]');
if (refInput?.files[0] && carInput?.files[0]) {
if (refInput.files[0].name === carInput.files[0].name &&
refInput.files[0].size === carInput.files[0].size) {
alert("Security Warning: You cannot use the same image for both Reference and Carrier!");
carInput.value = '';
document.getElementById('carrierPreview')?.classList.add('d-none');
const label = document.querySelector('#carrierDropZone .drop-zone-label');
if (label) {
label.innerHTML = '<i class="bi bi-cloud-arrow-up fs-3 d-block mb-2 text-muted"></i><span class="text-muted">Drop image or click to browse</span>';
}
capacityPanel?.classList.add('d-none');
}
}
}
document.querySelector('input[name="reference_photo"]')?.addEventListener('change', checkDuplicateFiles);
document.querySelector('input[name="carrier"]')?.addEventListener('change', checkDuplicateFiles);
</script>
{% endblock %}