package templates

// Breadcrumb is one segment of the current directory path shown above the
// file listing, e.g. "docs" linking to "/web/files/docs/".
type Breadcrumb struct {
	Name string
	Path string // relative path (no leading slash) used to build the link
}

// FileEntry is a single row (directory or file) in the file browser.
type FileEntry struct {
	Name     string
	IsDir    bool
	Size     string // human-readable, empty for directories
	ModTime  string
	RelPath  string // relative path (no leading slash) used to build the link
}

templ FilesPage(username string, breadcrumbs []Breadcrumb, entries []FileEntry, currentPath string, sortBy string, sortDir string) {
	@Layout("Files", username) {
		<div class="flex items-center justify-between mb-6 gap-4 flex-wrap">
			<h1 class="text-2xl font-semibold">Files</h1>
			<div class="flex gap-2 flex-wrap">
				<button id="new-folder-button" type="button"
					class="bg-white border border-gray-300 rounded-md px-3 py-1.5 text-sm font-medium text-gray-700 hover:bg-gray-50">
					New folder
				</button>
				<label class="cursor-pointer bg-indigo-600 text-white rounded-md px-3 py-1.5 text-sm font-medium hover:bg-indigo-700">
					Upload files
					<input id="upload-files-input" type="file" multiple class="hidden"/>
				</label>
				<label class="cursor-pointer bg-indigo-600 text-white rounded-md px-3 py-1.5 text-sm font-medium hover:bg-indigo-700">
					Upload folder
					<input id="upload-folder-input" type="file" webkitdirectory multiple class="hidden"/>
				</label>
				<select id="sort-select" class="rounded-md border-gray-300 border px-2 py-1.5 text-sm text-gray-700">
					<option value="name_asc" selected?={ sortBy == "name" && sortDir == "asc" }>Name (asc)</option>
					<option value="name_desc" selected?={ sortBy == "name" && sortDir == "desc" }>Name (desc)</option>
				</select>
			</div>
		</div>

		<nav class="text-sm text-gray-500 mb-4 flex flex-wrap items-center gap-1">
			<a href="/web/files/" class="hover:underline text-indigo-600">home</a>
			for _, bc := range breadcrumbs {
				<span>/</span>
				<a href={ templ.URL("/web/files/" + bc.Path + "/") } class="hover:underline text-indigo-600">{ bc.Name }</a>
			}
		</nav>

		<div
			id="file-drop-zone"
			data-current-path={ currentPath }
			data-upload-url={ "/web/files/" + currentPath }
			data-sort-by={ sortBy }
			data-sort-dir={ sortDir }
			class="bg-white rounded-lg border-2 border-dashed border-gray-200 p-2 transition-colors"
		>
			<!-- Table layout for wider screens (sm and up). -->
			<table class="hidden sm:table w-full text-sm table-fixed">
				<colgroup>
					<col class="w-auto"/>
					<col class="w-20"/>
					<col class="w-36"/>
					<col class="w-16"/>
				</colgroup>
				<thead>
					<tr class="text-left text-gray-400 border-b border-gray-100">
						<th class="py-2 px-3 font-medium">
							if sortBy == "name" {
								if sortDir == "asc" {
									<a href={ templ.URL("/web/files/" + currentPath + "?sort_by=name&sort_dir=desc") } class="hover:text-indigo-600">Name <span class="ml-1 text-xs">↓</span></a>
								} else {
									<a href={ templ.URL("/web/files/" + currentPath + "?sort_by=name&sort_dir=asc") } class="hover:text-indigo-600">Name <span class="ml-1 text-xs">↑</span></a>
								}
							} else {
								<a href={ templ.URL("/web/files/" + currentPath + "?sort_by=name&sort_dir=asc") } class="hover:text-indigo-600">Name</a>
							}
						</th>
						<th class="py-2 px-3 font-medium">Size</th>
						<th class="py-2 px-3 font-medium">
							if sortBy == "modtime" {
								if sortDir == "asc" {
									<a href={ templ.URL("/web/files/" + currentPath + "?sort_by=modtime&sort_dir=desc") } class="hover:text-indigo-600">Modified <span class="ml-1 text-xs">↓</span></a>
								} else {
									<a href={ templ.URL("/web/files/" + currentPath + "?sort_by=modtime&sort_dir=asc") } class="hover:text-indigo-600">Modified <span class="ml-1 text-xs">↑</span></a>
								}
							} else {
								<a href={ templ.URL("/web/files/" + currentPath + "?sort_by=modtime&sort_dir=asc") } class="hover:text-indigo-600">Modified</a>
							}
						</th>
						<th class="py-2 px-3 font-medium"></th>
					</tr>
				</thead>
				<tbody>
					for _, e := range entries {
						<tr class="border-b border-gray-50 hover:bg-gray-50">
							<td class="py-2 px-3 break-all">
								@fileEntryLink(e)
							</td>
							<td class="py-2 px-3 text-gray-500 whitespace-nowrap">{ e.Size }</td>
							<td class="py-2 px-3 text-gray-500 whitespace-nowrap">{ e.ModTime }</td>
							<td class="py-2 px-3 text-right whitespace-nowrap">
								<div class="flex items-center justify-end gap-3">
									@fileActions(e)
								</div>
							</td>
						</tr>
					}
					if len(entries) == 0 {
						<tr>
							<td colspan="4" class="py-6 px-3 text-center text-gray-400">
								This folder is empty — drag &amp; drop files or folders here, or use the upload buttons above.
							</td>
						</tr>
					}
				</tbody>
			</table>

			<!-- Stacked card layout for narrow screens: same information as
			     the table above (name, size, modified, delete), just
			     wrapped onto its own lines instead of squeezed into
			     columns, so nothing needs to be hidden or scrolled to. -->
			<ul class="sm:hidden divide-y divide-gray-100">
				for _, e := range entries {
					<li class="py-2.5 px-1">
						<div class="break-all">
							@fileEntryLink(e)
						</div>
						<div class="mt-1 flex flex-wrap items-center gap-x-3 gap-y-1 text-xs text-gray-500 pl-6">
							if e.Size != "" {
								<span>{ e.Size }</span>
							}
							<span>{ e.ModTime }</span>
							<span class="ml-auto flex items-center gap-3">
								@fileActions(e)
							</span>
						</div>
					</li>
				}
				if len(entries) == 0 {
					<li class="py-6 px-3 text-center text-gray-400 text-sm">
						This folder is empty — drag &amp; drop files or folders here, or use the upload buttons above.
					</li>
				}
			</ul>
		</div>
		<p id="upload-status" class="mt-3 text-sm text-gray-500"></p>
		<script type="module" src="/web/static/files.js"></script>
	}
}

templ fileEntryLink(e FileEntry) {
	if e.IsDir {
		<a href={ templ.URL("/web/files/" + e.RelPath + "/") } class="flex items-center gap-2 text-indigo-600 hover:underline">
			<span aria-hidden="true">📁</span>{ e.Name }
		</a>
	} else {
		<a href={ templ.URL("/web/files/" + e.RelPath) } target="_blank" rel="noopener" class="flex items-center gap-2 text-gray-700 hover:underline">
			<span aria-hidden="true">📄</span>{ e.Name }
		</a>
	}
}

// fileActions renders the per-entry action buttons: a Download link
// (forces a save-as via ?download=1, since the name link above now opens
// files inline so the browser can play/preview natively-supported types
// like video, audio, images, or PDFs) plus the Delete button. Folders have
// no download link since they aren't served as a single file.
templ fileActions(e FileEntry) {
	if !e.IsDir {
		<a
			href={ templ.URL("/web/files/" + e.RelPath + "?download=1") }
			class="text-gray-500 hover:text-indigo-600 hover:underline text-xs font-medium"
		>
			Download
		</a>
	}
	@fileDeleteButton(e)
}

templ fileDeleteButton(e FileEntry) {
	<button
		type="button"
		class="delete-entry-button text-red-500 hover:text-red-700 text-xs font-medium"
		data-path={ e.RelPath }
		data-name={ e.Name }
	>
		Delete
	</button>
}