decePubClient/Components/PublicNoticeHost.razor

@inherits LocalizableComponentBase
@implements IDisposable

@* The one-time notice before a persona's first reaction or poll vote, before it first joins an event, and before this
   device's first Web Push subscription (PublicNoticeService), in MainLayout. data-public-notice names which. *@
<DModal Placement="DModalPlacement.ResponsiveBottom" IsOpen="Notices.IsAsking" IsOpenChanged="Closed" CloseOnBackdrop="false" CloseText="@Localizer["Close"]"
		data-public-notice="@ActName">
	<Heading>@HeadingText</Heading>
	<ChildContent>
		<p class="text-sm">@NoticeText</p>
	</ChildContent>
	<Actions>
		<DButton Size="DSize.Sm" OnClick="() => Notices.Answer(false)">@Localizer["Cancel"]</DButton>
		<DButton Size="DSize.Sm" Color="DColor.Primary" OnClick="() => Notices.Answer(true)" data-public-notice-yes>@Localizer["Continue"]</DButton>
	</Actions>
</DModal>

@code {
	[Inject] PublicNoticeService Notices { get; set; }

	string ActName => Notices.Act switch
	{
		PublicAct.Participation => "participation",
		PublicAct.Push => "push",
		_ => "reaction"
	};

	string HeadingText => Notices.Act switch
	{
		PublicAct.Participation => Localizer["Joining an event is public"],
		PublicAct.Push => Localizer["Notifications go through your browser's push service"],
		_ => Localizer["Reactions and votes are public"]
	};

	string NoticeText => Notices.Act switch
	{
		PublicAct.Participation => Localizer["The event's server shows who takes part, {0} included. Your other personas are never named.", CascadingState.Persona?.Name ?? ""],
		PublicAct.Push => Localizer["To reach this device while decePub is closed, PrivaPub hands each notification to the push service your browser uses (Google's, Mozilla's, Apple's…). It is encrypted for this browser alone: the push service learns when a notification arrives and how big it is, never what it says, who sent it or which persona it is for. Each persona has a subscription of its own, so PrivaPub keeps nothing that ties your personas together."],
		_ => Localizer["Anyone who can see the post can see that {0} reacted to it or voted in it. Your other personas are never named.", CascadingState.Persona?.Name ?? ""]
	};

	protected override void OnInitialized()
	{
		Notices.Changed += Refresh;
		IsLoading = false;
	}

	void Refresh() => InvokeAsync(StateHasChanged);

	void Closed(bool open)
	{
		if (!open)
			Notices.Answer(false);
	}

	public void Dispose() => Notices.Changed -= Refresh;
}