using System.Collections.Generic;
using DTS.Common.Interface.Groups;
using GroupImport.Resources;

namespace GroupImport
{
    /// <summary>
    /// Interaction logic for GroupImportOptionsView.xaml
    /// </summary>
    public partial class GroupImportOptionsView : IGroupImportOptionsView
    {
        public GroupImportOptionsView()
        {
            InitializeComponent();
        }

        /// <summary>
        /// controls whether it is possible to continue to preview or not
        /// it is not possible to continue to preview if no files are selected
        /// and you automatically advance to preview if you select a file
        /// </summary>
        /// <param name="errors"></param>
        /// <param name="warnings"></param>
        /// <returns></returns>
        public bool Validate(out List<string> errors, out List<string> warnings)
        {
            errors = new List<string>();
            warnings = new List<string>();

            var vm = (GroupImportViewModel)DataContext;
            if (null != vm.SourceFiles && vm.SourceFiles.Length >= 1) return true;
            errors.Add(StringResources.Preview_NoFilesSelected);
            return false;
        }
    }
}