import 'package:flutter/material.dart';

/// Per-row action for DataGrid.
class DataGridAction<T> {
  const DataGridAction({
    required this.icon,
    required this.label,
    required this.onTap,
    this.showWhen,
    this.destructive = false,
    this.requiresConfirmation = false,
    this.confirmationMessage,
  });

  /// Icon to display in the action menu.
  final IconData icon;

  /// Label for the action.
  final String label;

  /// Callback when the action is triggered.
  final Future<void> Function(T item) onTap;

  /// Condition to show/hide this action for specific items.
  final bool Function(T item)? showWhen;

  /// Whether this is a destructive action (styled differently).
  final bool destructive;

  /// Whether to show a confirmation dialog before executing.
  final bool requiresConfirmation;

  /// Custom confirmation message. Defaults to "Are you sure?".
  final String? confirmationMessage;

  /// Checks if this action should be shown for the given item.
  bool shouldShow(T item) => showWhen?.call(item) ?? true;
}

/// Bulk action for selected rows in DataGrid.
class DataGridBulkAction<T> {
  const DataGridBulkAction({
    required this.icon,
    required this.label,
    required this.onTap,
    this.minSelected = 1,
    this.maxSelected,
    this.destructive = false,
    this.requiresConfirmation = false,
    this.confirmationMessage,
  });

  /// Icon to display.
  final IconData icon;

  /// Label for the action.
  final String label;

  /// Callback when the action is triggered with selected items.
  final Future<void> Function(List<T> items) onTap;

  /// Minimum number of items that must be selected.
  final int minSelected;

  /// Maximum number of items that can be selected (null = no limit).
  final int? maxSelected;

  /// Whether this is a destructive action.
  final bool destructive;

  /// Whether to show a confirmation dialog before executing.
  final bool requiresConfirmation;

  /// Custom confirmation message.
  final String? confirmationMessage;

  /// Checks if this action is available for the given selection count.
  bool isAvailable(int selectedCount) {
    if (selectedCount < minSelected) return false;
    if (maxSelected != null && selectedCount > maxSelected!) return false;
    return true;
  }
}