@inherits LocalizableComponentBase

@* The staff's log (/clientapi/moderator/log), newest first, 50 at a time: who acted (to administrators every login's
   name; to a moderator only its own; "the command line" for PrivaPub's CLI; nobody when an act on a persona of the
   acting login would tie the two), what was done, to what, and its note. Never an IP address. A moderator who isn't an
   administrator reads what isn't about a login. *@
<div class="flex flex-col gap-2 w-full" data-log>
	<div class="flex flex-wrap items-center gap-2">
		<DButton Size="DSize.Sm" Disabled="IsDefaultDisabled || isLoadingMore" OnClick="Reload" data-log-reload>
			<i class="ion-md-refresh" aria-hidden="true"></i><span>@Localizer["Read again"]</span>
		</DButton>
	</div>

	@if (IsLoading)
	{
		<p class="flex w-full items-center justify-center gap-2">
			<DLoading Variant="DLoadingVariant.Dots" LabelText="@Localizer["loading"]" />
			@Localizer["loading"]
		</p>
	}
	else if (failed)
	{
		<p class="text-sm text-error">@Localizer["The log could not be read."]</p>
	}
	else if (entries.Count == 0)
	{
		<p class="text-sm opacity-70" data-log-empty>@Localizer["Nothing was done yet."]</p>
	}

	<ol class="flex flex-col gap-2">
		@foreach (var entry in entries)
		{
			<li class="flex flex-col gap-1 p-2 rounded-lg neo-raised neo-2xs" data-log-entry="@entry.Id" data-log-action="@entry.Action">
				<div class="flex flex-wrap items-center gap-2">
					<b class="text-sm">@ActionName(entry.Action)</b>
					@if (entry.TargetLabel is { Length: > 0 } label)
					{
						<span class="text-sm break-all min-w-0" title="@($"{entry.TargetKind} {entry.TargetId}")" data-log-target>@label</span>
					}
					<span class="flex-1"></span>
					<span class="text-xs opacity-70" title="@entry.At.ToLocalTime().ToString(SUtility.dateTimeFormatExt)">@entry.At.GetPassedTime(Localizer)</span>
				</div>
				<div class="flex flex-wrap items-center gap-2 text-xs">
					<span data-log-by="@(entry.ByYou ? "you" : entry.By ?? "none")">@By(entry)</span>
					<code class="opacity-60">@entry.Action</code>
					@if (entry.ReportId is { Length: > 0 } reportId)
					{
						<span class="opacity-70">@Localizer["Report: {0}", reportId]</span>
					}
				</div>
				@if (entry.Note is { Length: > 0 } note)
				{
					<p class="text-xs opacity-80 break-words" data-log-note>@note</p>
				}
			</li>
		}
	</ol>

	@if (next is not null)
	{
		<DButton Size="DSize.Sm" class="self-center" Disabled="IsDefaultDisabled || isLoadingMore" OnClick="More" data-log-more>
			@if (isLoadingMore)
			{
				<DLoading Size="DSize.Sm" LabelText="@Localizer["loading"]" />
			}
			<span>@Localizer["Load more"]</span>
		</DButton>
	}
</div>

@code {
	const int PageSize = 50;

	[Inject] AdminService AdminService { get; set; }

	List<ViewAdminAction> entries = [];
	// the next page's `before`; null on the last
	string next;
	bool failed;
	bool isLoadingMore;

	protected override async Task OnInitializedAsync()
	{
		if (CascadingState.IsOffline)
		{
			WhenOnline(LoadData);
			StartOnlinePolling();
			IsLoading = false;
			return;
		}

		await LoadData();
		IsLoading = false;
	}

	async Task LoadData()
	{
		var page = await AdminService.Log(null, PageSize);
		failed = page is null;
		entries = page?.Items ?? [];
		next = page?.Next;
	}

	async Task Reload()
	{
		IsLoading = true;
		await LoadData();
		IsLoading = false;
	}

	async Task More()
	{
		isLoadingMore = true;
		var page = await AdminService.Log(next, PageSize);
		isLoadingMore = false;
		if (page is null)
		{
			Toast.AddResponseError(Localizer["The log could not be read."]);
			return;
		}

		var known = entries.Select(e => e.Id).ToHashSet();
		entries.AddRange(page.Items.Where(e => known.Add(e.Id)));
		next = page.Next;
	}

	string By(ViewAdminAction entry) => entry switch
	{
		{ ByYou: true } => Localizer["by you"],
		{ By: "cli" } => Localizer["by the command line"],
		{ By: { Length: > 0 } name } => Localizer["by {0}", name],
		_ => Localizer["by someone not named"]
	};

	string ActionName(string action) => action switch
	{
		"domain_block.insert" => Localizer["Server blocked"],
		"domain_block.delete" => Localizer["Server unblocked"],
		"backup.create" => Localizer["Backup made"],
		"backup.delete" => Localizer["Backup deleted"],
		"backup.restore" => Localizer["Backup restored"],
		"settings.update" => Localizer["Settings saved"],
		"settings.thumbnail" => Localizer["Thumbnail changed"],
		"rule.insert" => Localizer["Rule added"],
		"rule.update" => Localizer["Rule changed"],
		"rule.delete" => Localizer["Rule removed"],
		"announcement.insert" => Localizer["Announcement written"],
		"announcement.update" => Localizer["Announcement changed"],
		"announcement.delete" => Localizer["Announcement deleted"],
		"relay.insert" => Localizer["Relay added"],
		"relay.delete" => Localizer["Relay removed"],
		"report.resolve" => Localizer["Report resolved"],
		"root.promote" => Localizer["Login made administrator"],
		"root.demote" => Localizer["Login no longer administrator"],
		"root.create" => Localizer["Login made"],
		"root.delete" => Localizer["Login deleted"],
		"root.reset_totp" => Localizer["Two-factor sign-in reset"],
		"persona.move" => Localizer["Persona moved to another login"],
		_ => action
	};
}