@using System.Linq.Expressions
@inject IJSRuntime JSRuntime

<div class="relative">
    <InputText @attributes="AdditionalAttributes"
               @ref="inputComponent"
               id="@Id"
               Value="@Value"
               ValueChanged="ValueChanged"
               ValueExpression="ValueExpression"
               type="@(_showPassword ? "text" : "password")"
               placeholder="@Placeholder"
               autocomplete="off"
               class="bg-gray-50 border border-gray-300 text-gray-900 sm:text-sm rounded-lg focus:ring-primary-500 focus:border-primary-500 block w-full p-2.5 pr-10 dark:bg-gray-700 dark:border-gray-600 dark:placeholder-gray-400 dark:text-white dark:focus:ring-primary-500 dark:focus:border-primary-500" />

    <button type="button"
            @onclick="TogglePasswordVisibility"
            class="absolute inset-y-0 right-0 flex items-center pr-3 text-gray-500 hover:text-gray-700 dark:text-gray-400 dark:hover:text-gray-200"
            aria-label="@(_showPassword ? "Hide password" : "Show password")">
        @if (_showPassword)
        {
            <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13.875 18.825A10.05 10.05 0 0112 19c-4.478 0-8.268-2.943-9.543-7a9.97 9.97 0 011.563-3.029m5.858.908a3 3 0 114.243 4.243M9.878 9.878l4.242 4.242M9.88 9.88l-3.29-3.29m7.532 7.532l3.29 3.29M3 3l3.59 3.59m0 0A9.953 9.953 0 0112 5c4.478 0 8.268 2.943 9.543 7a10.025 10.025 0 01-4.132 5.411m0 0L21 21"></path>
            </svg>
        }
        else
        {
            <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 12a3 3 0 11-6 0 3 3 0 016 0z"></path>
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M2.458 12C3.732 7.943 7.523 5 12 5c4.478 0 8.268 2.943 9.542 7-1.274 4.057-5.064 7-9.542 7-4.477 0-8.268-2.943-9.542-7z"></path>
            </svg>
        }
    </button>
</div>

@code {
    private bool _showPassword = false;
    private InputText? inputComponent;

    /// <summary>
    /// Gets or sets the ID of the input field.
    /// </summary>
    [Parameter]
    public required string Id { get; set; }

    /// <summary>
    /// Gets or sets the value of the input field.
    /// </summary>
    [Parameter]
    public required string Value { get; set; }

    /// <summary>
    /// Gets or sets the event callback that is triggered when the value changes.
    /// </summary>
    [Parameter]
    public required EventCallback<string?> ValueChanged { get; set; }

    /// <summary>
    /// Gets or sets the expression that identifies the value property.
    /// </summary>
    [Parameter]
    public required Expression<Func<string>> ValueExpression { get; set; }

    /// <summary>
    /// Gets or sets the placeholder text for the input field.
    /// </summary>
    [Parameter]
    public required string Placeholder { get; set; }

    /// <summary>
    /// Gets or sets additional attributes for the input field.
    /// </summary>
    [Parameter(CaptureUnmatchedValues = true)]
    public Dictionary<string, object?>? AdditionalAttributes { get; set; } = new();

    /// <summary>
    /// Toggles the password visibility.
    /// </summary>
    private void TogglePasswordVisibility()
    {
        _showPassword = !_showPassword;
    }

    /// <summary>
    /// Focuses the input field.
    /// </summary>
    /// <returns>A task that represents the asynchronous focus operation.</returns>
    public async Task FocusAsync()
    {
        try
        {
            if (inputComponent?.Element != null)
            {
                await inputComponent.Element.Value.FocusAsync();
            }
            else
            {
                // Fallback to JS focus if component element is not available
                await JSRuntime.InvokeVoidAsync("eval", $"document.getElementById('{Id}')?.focus()");
            }
        }
        catch (Exception)
        {
            // Final fallback to JS focus if ElementReference focus fails
            await JSRuntime.InvokeVoidAsync("eval", $"document.getElementById('{Id}')?.focus()");
        }
    }
}
