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import { config } from "./config.ts";
import { formatFileSize, getMimeType, isViewableInBrowser } from "./fileUtils.ts";
const templateCache = new Map<string, string>();
async function loadTemplate(path: string): Promise<string> {
if (templateCache.has(path)) {
return templateCache.get(path)!;
}
const content = await Deno.readTextFile(path);
templateCache.set(path, content);
return content;
}
function replaceVariables(template: string, vars: Record<string, string>): string {
let result = template;
for (const [key, value] of Object.entries(vars)) {
result = result.replaceAll(`{{${key}}}`, value);
}
return result;
}
async function renderLayout(title: string, content: string, scripts = "", styles = ""): Promise<string> {
const layout = await loadTemplate("./templates/layout.html");
return replaceVariables(layout, {
title,
content,
scripts,
styles,
});
}
export async function renderUploadPage(chunked = false): Promise<string> {
const maxSizeMB = Math.floor(config.maxFileSize / (1024 * 1024));
const expirationDays = Math.floor(config.fileExpiration / (24 * 60 * 60 * 1000));
const uploadTemplate = await loadTemplate("./templates/upload.html");
const scriptTemplate = chunked
? await loadTemplate("./templates/scripts/chunked-upload.js")
: await loadTemplate("./templates/scripts/simple-upload.js");
const scriptContent = replaceVariables(scriptTemplate, {
"max-size": String(maxSizeMB),
"chunk-size": String(config.chunkSize),
});
const content = replaceVariables(uploadTemplate, {
"section-suffix": chunked ? "-js" : "-nojs",
"upload-type": chunked ? "(Chunked)" : "",
"nav-links": chunked
? '<a href="/">Simple Upload</a>'
: '<a href="/chunked">Chunked Upload</a>',
"form-attrs": chunked ? "" : 'action="/upload" method="POST" enctype="multipart/form-data"',
"input-attrs": chunked ? "" : "required",
"max-size": String(maxSizeMB),
"expiration-days": String(expirationDays),
"rate-limit-max": String(config.rateLimit.maxUploads),
"rate-limit-minutes": String(config.rateLimit.windowMs / 60000),
});
const scripts = `<script>\n${scriptContent}\n</script>`;
return renderLayout("File Upload", content, scripts);
}
export async function renderBrowsePage(files: Array<{ name: string; size: number; uploaded: Date }>): Promise<string> {
const browseTemplate = await loadTemplate("./templates/browse.html");
const fileRowTemplate = await loadTemplate("./templates/partials/file-row.html");
const emptyFilesTemplate = await loadTemplate("./templates/partials/empty-files.html");
const fileRows = files.map(file => {
const mimeType = getMimeType(file.name);
const viewable = isViewableInBrowser(mimeType);
const encodedName = encodeURIComponent(file.name);
const viewButton = viewable
? `<a href="/download/${encodedName}" target="_blank" class="button" style="margin-right: 10px; background-color: #28a745; color: white; border-color: #28a745;">View</a>`
: '';
return replaceVariables(fileRowTemplate, {
"encoded-name": encodedName,
"filename": file.name,
"size": formatFileSize(file.size),
"uploaded": file.uploaded.toLocaleString(),
"view-button": viewButton,
});
}).join('');
const filesContent = files.length > 0 ? `
<table style="width: 100%; border-collapse: collapse;">
<thead>
<tr>
<th>Filename</th>
<th>Size</th>
<th>Uploaded</th>
<th>Actions</th>
</tr>
</thead>
<tbody>
${fileRows}
</tbody>
</table>
` : emptyFilesTemplate;
const content = replaceVariables(browseTemplate, {
"files-content": filesContent,
});
return renderLayout("Browse Files", content);
}
export async function renderGalleryPage(files: Array<{ name: string; size: number; uploaded: Date }>): Promise<string> {
const galleryTemplate = await loadTemplate("./templates/gallery.html");
const galleryItemTemplate = await loadTemplate("./templates/partials/gallery-item.html");
const emptyGalleryTemplate = await loadTemplate("./templates/partials/empty-gallery.html");
// Filter only images and videos
const mediaFiles = files.filter(file => {
const mimeType = getMimeType(file.name);
return mimeType.startsWith("image/") || mimeType.startsWith("video/");
});
const galleryItems = mediaFiles.map((file, index) => {
const mimeType = getMimeType(file.name);
const isVideo = mimeType.startsWith("video/");
const encodedName = encodeURIComponent(file.name);
const media = isVideo
? `<video src="/download/${encodedName}" style="width: 100%; height: 200px; object-fit: cover; border-radius: 4px;"></video>
<div class="video-overlay">▶</div>`
: `<img src="/download/${encodedName}" alt="${file.name}" style="width: 100%; height: 200px; object-fit: cover; border-radius: 4px;">`;
return replaceVariables(galleryItemTemplate, {
"index": String(index),
"media": media,
"filename": file.name,
"size": formatFileSize(file.size),
"uploaded": file.uploaded.toLocaleDateString(),
});
}).join('');
const galleryContent = mediaFiles.length > 0
? `<div class="gallery-grid">\n${galleryItems}\n</div>`
: emptyGalleryTemplate;
const content = replaceVariables(galleryTemplate, {
"gallery-content": galleryContent,
});
const mediaFilesJson = JSON.stringify(mediaFiles.map(file => ({
name: file.name,
isVideo: getMimeType(file.name).startsWith("video/"),
size: formatFileSize(file.size),
uploaded: file.uploaded.toLocaleDateString()
})));
const slideshowScript = await loadTemplate("./templates/scripts/slideshow.js");
const scriptContent = replaceVariables(slideshowScript, {
"media-files-json": mediaFilesJson,
});
const styles = '<link rel="stylesheet" href="/css/gallery.css">';
const scripts = `<script>\n${scriptContent}\n</script>`;
return renderLayout("Gallery", content, scripts, styles);
}
export async function renderError(error: string, status = 400): Promise<string> {
const errorTemplate = await loadTemplate("./templates/error.html");
const content = replaceVariables(errorTemplate, {
status: String(status),
"error-message": error,
});
return renderLayout("Error", content);
}
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