@inherits LocalizableComponentBase

@* The login itself (the root, /clientapi/user): its email address, changed only with the password and a code sent to the
   new one, since a forgotten password is recovered through it; its password changed (every other session ends, this
   device's goes on with a new JWT); every session of it ended at once; or the whole of it deleted, every persona with it.
   Deleting it deletes everything public its personas had, and PrivaPub tells the servers that hold it. *@
<div class="flex flex-col gap-4 w-full" data-account>
	<div class="flex flex-col gap-2 p-3 rounded-xl neo-inset neo-2xs" data-account-email>
		<b class="text-sm">@Localizer["Email address"]</b>
		@if (IsLoading)
		{
			<DLoading Variant="DLoadingVariant.Dots" Size="DSize.Sm" LabelText="@Localizer["loading"]" />
		}
		else if (account is not null)
		{
			@if (account.Email is { Length: > 0 } email)
			{
				<p class="flex flex-wrap items-center gap-2 text-sm">
					<span class="break-all" data-account-email-address>@email</span>
					@if (account.IsEmailValidated)
					{
						<DBadge Size="DSize.Sm" Variant="DBadgeVariant.Soft" Color="DColor.Success" data-account-email-verified>@Localizer["verified"]</DBadge>
					}
					else
					{
						<DBadge Size="DSize.Sm" Variant="DBadgeVariant.Soft" Color="DColor.Warning" data-account-email-unverified>@Localizer["not verified"]</DBadge>
					}
				</p>
				@if (!account.IsEmailValidated)
				{
					<p class="text-xs opacity-70">@Localizer["Only a verified address can recover a forgotten password."]</p>
				}
			}
			else
			{
				<p class="text-sm" data-account-email-none>@Localizer["No email address yet: without one, a forgotten password can't be recovered."]</p>
			}

			@if (account.PendingEmail is { Length: > 0 } pending && !isChangingEmail)
			{
				<EditForm Model="code" OnValidSubmit="VerifyEmail" class="flex flex-col gap-2" data-account-email-code>
					<DataAnnotationsValidator />
					@if (codeSentence is not null)
					{
						<p class="text-sm opacity-70">@codeSentence</p>
					}
					<p class="text-sm break-all">@Localizer["Enter the code sent to {0}.", pending]</p>
					<DOtp @bind-Value="code.Code" Immediate="true" aria-label="@Localizer["Code"]" data-account-email-code-digits />
					<ErrorViewer />
					<DButton Type="submit" Size="DSize.Sm" Color="DColor.Primary" class="self-end" Disabled="@(IsDefaultDisabled || isSaving)" data-account-email-verify>
						<i class="ion-md-checkmark"></i><span>@Localizer["Verify"]</span>
					</DButton>
				</EditForm>
			}

			@if (isChangingEmail)
			{
				<EditForm Model="change" OnValidSubmit="ChangeEmail" class="flex flex-col gap-2" data-account-email-change>
					<DataAnnotationsValidator />
					<DInput TValue="string" Type="email" @bind-Value="change.Email" Immediate="true" autocomplete="email" inputmode="email" autocapitalize="none"
							spellcheck="false" placeholder="@Localizer["New email address"]" data-account-email-new />
					<DInput TValue="string" Type="password" @bind-Value="change.Password" Immediate="true" autocomplete="current-password"
							placeholder="@Localizer["Current password"]" data-account-email-password />
					<ErrorViewer />
					<div class="flex flex-wrap justify-end gap-2 pointer-coarse:gap-2">
						<DButton Size="DSize.Sm" OnClick="CloseEmailForms">@Localizer["Cancel"]</DButton>
						<DButton Type="submit" Size="DSize.Sm" Color="DColor.Primary" Disabled="@(IsDefaultDisabled || isSaving)" data-account-email-send>
							<i class="ion-md-mail"></i><span>@Localizer["Send the code"]</span>
						</DButton>
					</div>
				</EditForm>
			}
			else if (isRemovingEmail)
			{
				<EditForm Model="emailRemoval" OnValidSubmit="RemoveEmail" class="flex flex-col gap-2" data-account-email-remove>
					<DataAnnotationsValidator />
					<DInput TValue="string" Type="password" @bind-Value="emailRemoval.Password" Immediate="true" autocomplete="current-password"
							placeholder="@Localizer["Current password"]" data-account-email-remove-password />
					<ErrorViewer />
					<div class="flex flex-wrap justify-end gap-2 pointer-coarse:gap-2">
						<DButton Size="DSize.Sm" OnClick="CloseEmailForms">@Localizer["Cancel"]</DButton>
						<DButton Type="submit" Size="DSize.Sm" Color="DColor.Error" Disabled="@(IsDefaultDisabled || isSaving)" data-account-email-remove-confirm>
							<i class="ion-md-trash"></i><span>@Localizer["Remove the address"]</span>
						</DButton>
					</div>
				</EditForm>
			}
			else
			{
				<div class="flex flex-wrap justify-end gap-2 pointer-coarse:gap-2">
					@if (account.Email is { Length: > 0 })
					{
						<DButton Size="DSize.Sm" Disabled="@(IsDefaultDisabled || isSaving)" OnClick="OpenEmailRemoval" data-account-email-remove-open>
							<i class="ion-md-trash"></i><span>@Localizer["Remove the address"]</span>
						</DButton>
					}
					<DButton Size="DSize.Sm" Disabled="@(IsDefaultDisabled || isSaving)" OnClick="OpenEmailChange" data-account-email-change-open>
						<i class="ion-md-create"></i><span>@(account.Email is { Length: > 0 } ? Localizer["Change"] : Localizer["Add an address"])</span>
					</DButton>
				</div>
			}
		}
	</div>

	<EditForm Model="password" OnValidSubmit="ChangePassword" class="flex flex-col gap-2 p-3 rounded-xl neo-inset neo-2xs" data-account-password>
		<DataAnnotationsValidator />
		<b class="text-sm">@Localizer["Change the password"]</b>
		<p class="text-xs opacity-70">@Localizer["Every other device signed in to this login is signed out."]</p>
		<DInput TValue="string" type="password" @bind-Value="password.OldPassword" Immediate="true" autocomplete="current-password"
				placeholder="@Localizer["Current password"]" data-account-current />
		<div class="flex flex-wrap gap-2">
			<DInput TValue="string" type="password" class="flex-1 min-w-40" @bind-Value="password.NewPassword" Immediate="true" autocomplete="new-password"
					placeholder="@Localizer["New password"]" data-account-new />
			<DInput TValue="string" type="password" class="flex-1 min-w-40" @bind-Value="password.RepeatedPassword" Immediate="true" autocomplete="new-password"
					placeholder="@Localizer["Repeat the new password"]" data-account-repeat />
		</div>
		<ErrorViewer />
		<DButton Type="submit" Size="DSize.Sm" Color="DColor.Primary" class="self-end" Disabled="@(IsDefaultDisabled || isSaving)" data-account-password-save>
			<i class="ion-md-key"></i><span>@Localizer["Change the password"]</span>
		</DButton>
	</EditForm>

	<div class="flex flex-col gap-2 p-3 rounded-xl neo-inset neo-2xs" data-account-everywhere>
		<b class="text-sm">@Localizer["Sign out everywhere"]</b>
		<p class="text-sm">@Localizer["Every device signed in to this login signs out, this one too, with every persona: for a lost device, or a session that isn't yours."]</p>
		<DButton Size="DSize.Sm" Color="DColor.Warning" class="self-end" Disabled="@(IsDefaultDisabled || isSaving)" OnClick="LogoutEverywhere" data-account-everywhere-confirm>
			<i class="ion-md-log-out"></i><span>@Localizer["Sign out everywhere"]</span>
		</DButton>
	</div>

	<EditForm Model="removal" OnValidSubmit="Delete" class="flex flex-col gap-2 p-3 rounded-xl neo-inset neo-2xs" data-account-delete>
		<DataAnnotationsValidator />
		<b class="text-sm text-error">@Localizer["Delete this login"]</b>
		<p class="text-sm">@Localizer["Every persona of this login goes with it, and everything public they had, here and on the servers that hold it. It cannot be undone."]</p>
		<DInput TValue="string" type="password" @bind-Value="removal.Password" Immediate="true" autocomplete="current-password"
				placeholder="@Localizer["Current password"]" data-account-delete-password />
		<DCheckbox @bind-Value="understood" Size="DSize.Sm" LabelText="@Localizer["I understand: delete this login and every persona of it"]" data-account-delete-understood />
		<ErrorViewer />
		<DButton Type="submit" Size="DSize.Sm" Color="DColor.Error" class="self-end" Disabled="@(IsDefaultDisabled || isSaving || !understood)" data-account-delete-confirm>
			<i class="ion-md-trash"></i><span>@Localizer["Delete it for good"]</span>
		</DButton>
	</EditForm>
</div>

@code {
	[Inject] AuthService AuthService { get; set; }
	[Inject] ConfirmService Confirm { get; set; }

	/// <summary>The login as PrivaPub describes it; null until read, or when it couldn't be (the email block stays empty).</summary>
	ViewAccount account;
	EmailChangeForm change = new();
	EmailCodeForm code = new();
	PasswordForm emailRemoval = new();
	UserPasswordForm password = new();
	RemoveSelfForm removal = new();
	/// <summary>PrivaPub's answer to the change asked here, the same whether or not the address is free.</summary>
	string codeSentence;
	bool isChangingEmail;
	bool isRemovingEmail;
	bool understood;
	bool isSaving;

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

		await LoadData();
		IsLoading = false;
	}

	async Task LoadData() => account = await AuthService.Account();

	void OpenEmailChange()
	{
		change = new();
		isRemovingEmail = false;
		isChangingEmail = true;
	}

	void OpenEmailRemoval()
	{
		emailRemoval = new();
		isChangingEmail = false;
		isRemovingEmail = true;
	}

	void CloseEmailForms()
	{
		isChangingEmail = false;
		isRemovingEmail = false;
	}

	async Task ChangeEmail()
	{
		isSaving = true;
		change.Email = change.Email.Trim();
		var result = await AuthService.ChangeEmail(change);
		isSaving = false;
		if (result.IsInvalid)
		{
			Toast.AddResponseError(result);
			return;
		}

		codeSentence = result.Data is string { Length: > 0 } said
			? said
			: Localizer["If that address can be used, a code is on its way to it. It works for one hour."];
		// as PrivaPub keeps it while it waits for its code
		account.PendingEmail = change.Email.ToLowerInvariant();
		change = new();
		code = new();
		isChangingEmail = false;
	}

	async Task VerifyEmail()
	{
		isSaving = true;
		var result = await AuthService.VerifyEmail(code.Code.Trim());
		isSaving = false;
		if (result.IsInvalid)
		{
			Toast.AddResponseError(result);
			// five wrong codes, or an hour, and the address no longer waits
			account = await AuthService.Account() ?? account;
			return;
		}

		account = result.Data as ViewAccount ?? await AuthService.Account();
		code = new();
		codeSentence = default;
		Toast.AddResponseSuccess(Localizer["Email address verified."]);
	}

	async Task RemoveEmail()
	{
		if (!await Confirm.Ask(Localizer["Remove the email address?"], Localizer["Without one, a forgotten password can't be recovered."],
				Localizer["Remove the address"], true))
			return;

		isSaving = true;
		var result = await AuthService.RemoveEmail(emailRemoval.Password);
		isSaving = false;
		if (result.IsInvalid)
		{
			Toast.AddResponseError(result);
			return;
		}

		account = result.Data as ViewAccount ?? await AuthService.Account();
		emailRemoval = new();
		codeSentence = default;
		isRemovingEmail = false;
		Toast.AddResponseSuccess(Localizer["Email address removed."]);
	}

	async Task ChangePassword()
	{
		isSaving = true;
		// the session goes on with the JWT PrivaPub answers with, and the persona with a new token
		var result = await AuthService.ChangePassword(password);
		isSaving = false;
		if (result.IsInvalid)
		{
			Toast.AddResponseError(result);
			return;
		}

		password = new();
		Toast.AddResponseSuccess(Localizer["Password changed."]);
	}

	async Task LogoutEverywhere()
	{
		if (!await Confirm.Ask(Localizer["Sign out everywhere?"],
				Localizer["Every device and every persona of this login signs out, this one too. Signing in again takes the password."],
				Localizer["Sign out everywhere"], true))
			return;

		isSaving = true;
		var result = await AuthService.LogoutEverywhere();
		isSaving = false;
		if (result.IsInvalid)
		{
			Toast.AddResponseError(result);
			return;
		}

		await CascadingState.SignOut();
		Navigation.NavigateTo("login");
	}

	async Task Delete()
	{
		isSaving = true;
		var result = await AuthService.DeleteAccount(removal);
		isSaving = false;
		if (result.IsInvalid)
		{
			Toast.AddResponseError(result);
			return;
		}

		await CascadingState.SignOut();
		Navigation.NavigateTo("login");
	}
}