@using RobotNet10.FleetManager.Shared.DTOs.RobotModel
@using RobotNet10.FleetManager.Client.Services
@inject ISnackbar Snackbar

<MudDialog>
    <TitleContent>
        <MudText Typo="Typo.h6">
            <MudIcon Icon="@Icons.Material.Filled.Delete" Color="Color.Error" Class="mr-2" />
            Delete Robot Model
        </MudText>
    </TitleContent>
    <DialogContent>
        <MudStack Spacing="3">
            <MudText Typo="Typo.body1">
                Are you sure you want to delete the robot model <strong>@RobotModel.ModelName</strong>?
            </MudText>

            @if (usageInfo != null)
            {
                @if (usageInfo.RobotCount > 0)
                {
                    <MudAlert Severity="Severity.Error">
                        <MudText>This robot model is currently being used by <strong>@usageInfo.RobotCount</strong> robot(s).</MudText>
                        <MudText>You must delete or reassign all robots using this model before you can delete it.</MudText>
                    </MudAlert>
                }
                else
                {
                    <MudAlert Severity="Severity.Warning">
                        <MudText>This action cannot be undone.</MudText>
                    </MudAlert>
                }
            }
            else if (isLoadingUsageInfo)
            {
                <MudProgressCircular Size="Size.Small" Indeterminate="true" />
            }
        </MudStack>
    </DialogContent>
    <DialogActions>
        <MudButton OnClick="Cancel">Cancel</MudButton>
        <MudButton Color="Color.Error"
                   Variant="Variant.Filled"
                   OnClick="Submit"
                   Disabled="@(isDeleting || (usageInfo != null && !usageInfo.CanDelete))">
            @if (isDeleting)
            {
                <MudProgressCircular Class="mr-2" Size="Size.Small" Indeterminate="true" />
                <span>Deleting...</span>
            }
            else
            {
                <span>Delete</span>
            }
        </MudButton>
    </DialogActions>
</MudDialog>

@code {
    [CascadingParameter] private IMudDialogInstance? MudDialog { get; set; }
    [Parameter] public RobotModelApiService ApiService { get; set; } = null!;
    [Parameter] public RobotModelDto RobotModel { get; set; } = null!;

    private RobotModelUsageInfoDto? usageInfo;
    private bool isLoadingUsageInfo = true;
    private bool isDeleting = false;

    protected override async Task OnInitializedAsync()
    {
        await LoadUsageInfoAsync();
    }

    private async Task LoadUsageInfoAsync()
    {
        isLoadingUsageInfo = true;
        try
        {
            usageInfo = await ApiService.GetUsageInfoAsync(RobotModel.Id);
        }
        catch (Exception ex)
        {
            Snackbar.Add($"Error loading usage info: {ex.Message}", Severity.Error);
        }
        finally
        {
            isLoadingUsageInfo = false;
            StateHasChanged();
        }
    }

    private void Cancel()
    {
        MudDialog?.Cancel();
    }

    private async Task Submit()
    {
        if (usageInfo != null && !usageInfo.CanDelete)
        {
            Snackbar.Add("Cannot delete robot model that is in use", Severity.Warning);
            return;
        }

        isDeleting = true;
        StateHasChanged();

        try
        {
            await ApiService.DeleteAsync(RobotModel.Id);
            Snackbar.Add($"Robot model '{RobotModel.ModelName}' deleted successfully", Severity.Success);
            MudDialog?.Close(DialogResult.Ok(true));
        }
        catch (Exception ex)
        {
            Snackbar.Add($"Error deleting robot model: {ex.Message}", Severity.Error);
        }
        finally
        {
            isDeleting = false;
            StateHasChanged();
        }
    }
}