@using MUnique.OpenMU.Web.Shared.Components.Toast
@using MUnique.OpenMU.Web.Shared.Services
@inject ToastService ToastService
@implements IDisposable

@if (this.ToastService.Toasts.Count > 0)
{
    <div class="toast-container position-fixed top-0 end-0 p-3" aria-live="polite" aria-atomic="true">
        @foreach (var toast in this.ToastService.Toasts)
        {
            var (iconClass, accentClass) = this.GetStyling(toast.Level);
            <div @key="toast.Key" class="toast @accentClass @(toast.IsClosing ? "closing" : "show")" role="alert" aria-live="assertive" aria-atomic="true">
                <div class="d-flex">
                    <div class="toast-body d-flex align-items-start">
                        <span class="oi @iconClass toast__icon" aria-hidden="true"></span>
                        <div class="ms-2 w-100">
                            @if (toast.Heading is { } heading)
                            {
                                <strong class="d-block">@heading</strong>
                            }
                            <div>@toast.Message</div>
                        </div>
                    </div>
                    <button type="button" class="btn-close me-2 m-auto" data-bs-dismiss="toast" aria-label="Close" @onclick="() => this.CloseAsync(toast)"></button>
                </div>
            </div>
        }
    </div>
}

@code {
    /// <inheritdoc />
    protected override void OnInitialized()
    {
        this.ToastService.StateChanged += this.OnStateChanged;
    }

    /// <inheritdoc />
    public void Dispose()
    {
        this.ToastService.StateChanged -= this.OnStateChanged;
    }

    private void OnStateChanged()
    {
        _ = this.InvokeAsync(this.StateHasChanged);
    }

    private Task CloseAsync(ToastInstance toast)
    {
        this.ToastService.Close(toast);
        return Task.CompletedTask;
    }

    private (string IconClass, string AccentClass) GetStyling(ToastLevel level)
    {
        return level switch
        {
            ToastLevel.Success => ("oi-circle-check", "text-success"),
            ToastLevel.Info => ("oi-info", "text-primary"),
            ToastLevel.Warning => ("oi-warning", "text-warning"),
            ToastLevel.Error => ("oi-bolt", "text-danger"),
            _ => ("oi-info", "text-primary"),
        };
    }
}