@using System.ComponentModel.DataAnnotations

@if (IsOpen)
{
    <div class="fixed inset-0 z-50 flex items-center justify-center">
        <!-- Backdrop -->
        <div class="absolute inset-0 bg-black/70" @onclick="Cancel"></div>

        <!-- Modal -->
        <div class="relative bg-zinc-900 border border-zinc-800 rounded w-full max-w-md p-4">
            <!-- Header -->
            <div class="flex justify-between items-center mb-3">
                <div class="text-zinc-100 text-sm font-medium">
                    @Title
                </div>

                <button
                    class="text-zinc-400 hover:text-zinc-200"
                    @onclick="Cancel">
                    ✕
                </button>
            </div>

            @if (!string.IsNullOrWhiteSpace(Description))
            {
                <div class="text-xs text-zinc-400 mb-4">
                    @Description
                </div>
            }

            <!-- Form -->
            <EditForm Model="_model" OnValidSubmit="HandleValidSubmit">
                <DataAnnotationsValidator />

                @if (!string.IsNullOrEmpty(_error))
                {
                    <div class="text-xs text-red-400 mb-3">
                        @_error
                    </div>
                }

                <div class="text-sm">
                    <label class="block text-zinc-400 mb-1">
                        @Label
                    </label>

                    <InputText
                        class="w-full bg-zinc-800 border border-zinc-700 rounded px-2 py-1 text-zinc-100"
                        @bind-Value="_model.Value" />
                </div>

                <!-- Actions -->
                <div class="flex justify-end gap-2 mt-5">
                    <button
                        type="button"
                        class="px-3 py-1 rounded border border-zinc-700 text-zinc-300 hover:bg-zinc-800"
                        @onclick="Cancel">
                        Cancel
                    </button>

                    <button
                        type="submit"
                        class="px-3 py-1 rounded bg-emerald-600 text-black hover:bg-emerald-500">
                        Accept
                    </button>
                </div>
            </EditForm>
        </div>
    </div>
}

@code {
    [Parameter] public bool IsOpen { get; set; }
    [Parameter] public EventCallback<bool> IsOpenChanged { get; set; }

    [Parameter] public string Title { get; set; } = "Edit value";
    [Parameter] public string? Description { get; set; }
    [Parameter] public string Label { get; set; } = "Value";

    [Parameter] public string? Value { get; set; }

    /// <summary>
    /// Called when Accept is clicked.
    /// May throw an exception (e.g. validation error).
    /// </summary>
    [Parameter] public EventCallback<string> OnSubmit { get; set; }

    private FormModel _model = new();
    private string? _error;

    protected override void OnParametersSet()
    {
        if (IsOpen)
        {
            _error = null;
            _model = new FormModel
            {
                Value = Value
            };
        }
    }

    private async Task HandleValidSubmit()
    {
        _error = null;

        try
        {
            await OnSubmit.InvokeAsync(_model.Value!);
            await Close();
        }
        catch (Exception ex)
        {
            // Show exception message instead of closing
            _error = ex.Message;
        }
    }

    private async Task Cancel()
    {
        await Close();
    }

    private async Task Close()
    {
        _model = new();
        _error = null;
        await IsOpenChanged.InvokeAsync(false);
    }

    private class FormModel
    {
        [Required]
        public string? Value { get; set; }
    }
}