@page "/maps"
@rendermode InteractiveWebAssemblyNoPrerender
@using MudBlazor
@using RobotNet10.RobotApp.Client.Shared.SLAM
@using RobotNet10.RobotApp.Client.Clients
@using RobotNet10.RobotApp.Client.Components.SLAM
@implements IAsyncDisposable
@inject SLAMClient CartographerClient
@inject ISnackbar Snackbar
@inject IDialogService DialogService

<PageTitle>Map Management</PageTitle>

<MudThemeProvider IsDarkMode />
<MudPopoverProvider />
<MudDialogProvider />
<MudSnackbarProvider />

<MudContainer MaxWidth="MaxWidth.ExtraLarge" Class="mt-4">
    <MudCard Elevation="2">
        <MudCardHeader>
            <CardHeaderContent>
                <MudText Typo="Typo.h5">Map Management</MudText>
            </CardHeaderContent>
            <CardHeaderActions>
                <MudButton Variant="Variant.Filled" 
                          Color="Color.Primary"
                          StartIcon="@Icons.Material.Filled.Refresh"
                          OnClick="RefreshMapsAsync"
                          Disabled="@(!CartographerClient.IsConnected || IsLoading)">
                    Refresh
                </MudButton>
            </CardHeaderActions>
        </MudCardHeader>
        <MudCardContent>
            @if (IsLoading)
            {
                <MudProgressLinear Color="Color.Primary" Indeterminate="true" />
            }
            else if (Maps.Count == 0)
            {
                <MudText Typo="Typo.body1" Color="Color.Secondary">
                    No maps found. Create a map by starting scan mapping.
                </MudText>
            }
            else
            {
                <MudTable Items="@Maps" Hover="true" Striped="true">
                    <HeaderContent>
                        <MudTh>Name</MudTh>
                        <MudTh>Created</MudTh>
                        <MudTh>Resolution</MudTh>
                        <MudTh>Size</MudTh>
                        <MudTh>Trajectory Nodes</MudTh>
                        <MudTh></MudTh>
                    </HeaderContent>
                    <RowTemplate>
                        <MudTd DataLabel="Name">
                            <MudText Typo="Typo.body1">@context.Name</MudText>
                        </MudTd>
                        <MudTd DataLabel="Created">
                            <MudText Typo="Typo.body2">@context.CreatedDate.ToString("yyyy-MM-dd HH:mm")</MudText>
                        </MudTd>
                        <MudTd DataLabel="Resolution">
                            <MudText Typo="Typo.body2">@context.Resolution.ToString("F3") m/p</MudText>
                        </MudTd>
                        <MudTd DataLabel="Size">
                            <MudText Typo="Typo.body2">@context.Width.ToString("F1") x @context.Height.ToString("F1") m</MudText>
                        </MudTd>
                        <MudTd DataLabel="Trajectory Nodes">
                            <MudText Typo="Typo.body2">@context.TrajectoryNodeCount</MudText>
                        </MudTd>
                        <MudTd DataLabel="Actions">
                            <MudTooltip Text="View map details">
                                <MudIconButton Icon="@Icons.Material.Filled.OpenInNew"
                                              Color="Color.Primary"
                                              Size="Size.Small"
                                              Href="@($"/map/{context.Name}")" />
                            </MudTooltip>
                        </MudTd>
                    </RowTemplate>
                </MudTable>
            }
        </MudCardContent>
    </MudCard>
</MudContainer>

@code {
    private List<MapInfoDto> Maps { get; set; } = new();
    private bool IsLoading { get; set; } = false;

    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if (firstRender)
        {
            await CartographerClient.StartAsync();
            await RefreshMapsAsync();
        }
    }

    private async Task RefreshMapsAsync()
    {
        if (!CartographerClient.IsConnected)
        {
            Snackbar.Add("Not connected to server", Severity.Warning);
            return;
        }

        try
        {
            IsLoading = true;
            StateHasChanged();

            Maps = (await CartographerClient.ListMapsAsync()).ToList();
        }
        catch (Exception ex)
        {
            Snackbar.Add($"Failed to load maps: {ex.Message}", Severity.Error);
        }
        finally
        {
            IsLoading = false;
            StateHasChanged();
        }
    }

    private async Task LoadMapAsync(string mapName)
    {
        try
        {
            var success = await CartographerClient.StartLocalizationAsync(mapName);
            if (success)
            {
                Snackbar.Add($"Started localization with map: {mapName}", Severity.Success);
            }
            else
            {
                Snackbar.Add($"Failed to start localization with map: {mapName}", Severity.Error);
            }
        }
        catch (Exception ex)
        {
            Snackbar.Add($"Failed to load map: {ex.Message}", Severity.Error);
        }
    }

    private async Task DeleteMapAsync(string mapName)
    {
        var parameters = new DialogParameters
        {
            ["MapName"] = mapName
        };

        var options = new DialogOptions 
        { 
            CloseOnEscapeKey = true, 
            MaxWidth = MaxWidth.Small, 
            FullWidth = true 
        };

        var dialog = await DialogService.ShowAsync<DeleteMapDialog>("Delete Map", parameters, options);
        var result = await dialog.Result;

        if (result != null && !result.Canceled)
        {
            try
            {
                var success = await CartographerClient.DeleteMapAsync(mapName);
                if (success)
                {
                    Snackbar.Add($"Map deleted: {mapName}", Severity.Success);
                    await RefreshMapsAsync();
                }
                else
                {
                    Snackbar.Add($"Failed to delete map: {mapName}", Severity.Error);
                }
            }
            catch (Exception ex)
            {
                Snackbar.Add($"Failed to delete map: {ex.Message}", Severity.Error);
            }
        }
    }

    private string FormatFileSize(long bytes)
    {
        string[] sizes = { "B", "KB", "MB", "GB" };
        double len = bytes;
        int order = 0;
        while (len >= 1024 && order < sizes.Length - 1)
        {
            order++;
            len = len / 1024;
        }
        return $"{len:0.##} {sizes[order]}";
    }

    public async ValueTask DisposeAsync()
    {
        // CartographerClient is scoped, will be disposed by DI
    }
}