@page "/account/login"
@page "/{locale}/account/login"
@layout EmptyLayout
@inject ILogger<Login> Logger
@inject IStringLocalizer<Login> L


<PageTitle>@L["login.title"]</PageTitle>

@if (!dataLoaded)
{
    <Spin Spinning="_isLoading" />
}
else
{
    <Flex Style="height:100vh" Justify="FlexJustify.Center" Align="FlexAlign.Center" Direction="FlexDirection.Vertical">
        <GridRow Justify="RowJustify.Center" Class="">
            <GridCol>
                <Card>
                    <Form @ref="form" Model="@login" OnFinish="LoginAsync">
                        <FluentValidationValidator />
                        <FormItem>
                            <AntDesign.Input Placeholder="@L["login.account.placeholder"]" Size="InputSize.Large" @bind-Value="@login.Account">
                                <Prefix><Icon Type="user" /></Prefix>
                            </AntDesign.Input>
                        </FormItem>
                        <FormItem>
                            <AntDesign.Input Placeholder="@L["login.password.placeholder"]" Size="InputSize.Large" @bind-Value="@login.Password" Type="InputType.Password">
                                <Prefix><Icon Type="lock" /></Prefix>
                            </AntDesign.Input>
                        </FormItem>
                        <FormItem>
                            <a style="float: left;">
                                @L["login.forgot"]
                            </a>
                            <a style="float: right;">
                                <NavLink href="/register">@L["login.register"]</NavLink>
                            </a>
                        </FormItem>
                        <FormItem>
                            <Button Type="ButtonType.Primary" HtmlType="submit" Class="submit" Size="ButtonSize.Large" Block>@L["login.submit"]</Button>
                        </FormItem>
                        <FormItem>
                            <a @onclick="setAccount">
                                @L["login.setdev"]
                            </a>
                        </FormItem>
                    </Form>
                </Card>
            </GridCol>
        </GridRow>
        <GridRow Style="padding-top:40px">
            <span style="font-size:12px;padding-right:3px;">@L["copyright"]</span>
            <span style="font-size:12px">runing as @handler</span>
        </GridRow>

        <GridRow>
            <Atomx.Admin.Client.Components.LangSelector />
        </GridRow>

        <GridRow Style="padding-top:10px">
            <div>
                <strong>Quick links:</strong>
                <span style="padding-left:10px;"><NavLink href="/counter">Counter</NavLink></span>
                <span style="padding-left:10px;"><NavLink href="/weather">Weather</NavLink></span>
            </div>
            <div>
                <strong>zh Quick links:</strong>
                <span style="padding-left:10px;"><NavLink href="/zh/counter">Counter</NavLink></span>
                <span style="padding-left:10px;"><NavLink href="/zh/weather">Weather</NavLink></span>
            </div>
            <div>
                <strong>en Quick links:</strong>
                <span style="padding-left:10px;"><NavLink href="/en/counter">Counter</NavLink></span>
                <span style="padding-left:10px;"><NavLink href="/en/weather">Weather</NavLink></span>
            </div>
        </GridRow>
    </Flex>
}

@code {
    string handler = "Server";

    [Parameter]
    public string Locale { get; set; } = string.Empty;

    [Parameter]
    [SupplyParameterFromQuery(Name = "ReturnUrl")]
    public string? ReturnUrl { get; set; }

    [SupplyParameterFromForm]
    public LoginModel login { get; set; } = new();
    private Form<LoginModel> form = null!;

    bool dataLoaded = false;

    string message { get; set; } = string.Empty;

    private bool _isLoading = false;

    protected override void OnInitialized()
    {
        if (OperatingSystem.IsBrowser())
        {
            handler = "Wasm";
        }
        else
        {
            handler = "Server";
        }
    }

    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if (firstRender)
        {
            var authState = await AuthStateProvider.GetAuthenticationStateAsync();
            if (authState.User.Identity != null && authState.User.Identity.IsAuthenticated)
            {
                Navigation.NavigateTo(ReturnUrl ?? "/");
            }
        }
        if (!dataLoaded)
        {
            dataLoaded = true;
            StateHasChanged();
        }
    }

    private async Task LoginAsync()
    {
        if (!form.Validate()) return;

        _isLoading = true;
        StateHasChanged();

        try
        {
            var api = "/api/sign/in";

            if (!OperatingSystem.IsBrowser())
            {
                // Server 模式：使用浏览器发起的 fetch（通过 JS）并携带 credentials: 'include'
                var jsResult = await JS.InvokeAsync<JsonElement>("ajax.Post", api, login);
                var result = jsResult.ToJson().FromJson<ApiResult<AuthResponse>>();
                if (result != null && result.Success)
                {
                    var auth = result.Data;
                    await localStorage.SetItemAsync(StorageKeys.AccessToken, auth.Token);
                    await localStorage.SetItemAsync(StorageKeys.RefreshToken, auth.RefreshToken);

                    if (AuthStateProvider is PersistentAuthenticationStateProvider provider)
                    {
                        provider.UpdateAuthenticationState(auth.Token);
                    }

                    Logger.LogInformation($"登录成功，server 跳转: {ReturnUrl}");
                    Navigation.NavigateTo(ReturnUrl ?? "/", forceLoad: true);
                }
                else
                {
                    ModalService.Error(new ConfirmOptions() { Title = "提示", Content = result.Message });
                }
            }
            else
            {
                // Wasm 模式：保存 localStorage 并更新 AuthStateProvider
                var result = await HttpService.Post<ApiResult<AuthResponse>>(api, login);
                if (result.Success && result.Data != null)
                {
                    var auth = result.Data;
                    await localStorage.SetItemAsync(StorageKeys.AccessToken, auth.Token);
                    await localStorage.SetItemAsync(StorageKeys.RefreshToken, auth.RefreshToken);

                    if (AuthStateProvider is PersistentAuthenticationStateProvider provider)
                    {
                        provider.UpdateAuthenticationState(auth.Token);
                    }

                    Logger.LogInformation("登录成功，wasm 跳转: {ReturnUrl}", ReturnUrl);
                    Navigation.NavigateTo(ReturnUrl ?? "/");
                }
                else
                {
                    ModalService.Error(new ConfirmOptions() { Title = "提示", Content = result.Message });
                }
            }
        }
        catch (Exception ex)
        {
            Logger.LogError(ex, "登录失败");
            ModalService.Error(new ConfirmOptions() { Title = "错误", Content = "登录异常，请稍后重试" });
        }
        finally
        {
            _isLoading = false;
            StateHasChanged();
        }
    }

    private async Task OnPasswordKeyDown(KeyboardEventArgs value)
    {
        if (value.Key == "Enter")
        {
            await LoginAsync();
        }
    }

    void setAccount()
    {
        login.Account = "admin";
        login.Password = "admin888";
    }
}