using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.Core.Commands;
using Tango.Scripting;
using Tango.SharedUI;

namespace Tango.Stubs.ViewModels
{
    /// <summary>
    /// Represents a single script editor tab view model;
    /// </summary>
    /// <seealso cref="Tango.SharedUI.ViewModel" />
    public class CodeTabVM : ViewModel
    {
        private String _title;
        /// <summary>
        /// Gets or sets the script title/file name.
        /// </summary>
        public String Title
        {
            get
            {
                return File != null ? Path.GetFileName(File) : _title;
            }
            set
            {
                _title = value;
                RaisePropertyChanged(nameof(Title));
            }
        }

        private String _file;
        /// <summary>
        /// Gets or sets the full script file path.
        /// </summary>
        public String File
        {
            get { return _file; }
            set
            {
                _file = value;
                RaisePropertyChanged(nameof(File));
                RaisePropertyChanged(nameof(Title));
            }
        }

        private String _code;
        /// <summary>
        /// Gets or sets the script code.
        /// </summary>
        public String Code
        {
            get { return _code; }
            set { _code = value; RaisePropertyChanged(nameof(Code)); }
        }

        private bool _isRunning;
        /// <summary>
        /// Gets or sets a value indicating whether this instance is running.
        /// </summary>
        public bool IsRunning
        {
            get { return _isRunning; }
            set { _isRunning = value; RaisePropertyChangedAuto(); }
        }

        private RelayCommand _insertCodeSnippetCommand;
        /// <summary>
        /// Gets or sets the insert snippet command. (Inserts stub snippet to editor)
        /// </summary>
        public RelayCommand InsertSnippetCommand
        {
            get { return _insertCodeSnippetCommand; }
            set { _insertCodeSnippetCommand = value; RaisePropertyChanged(nameof(InsertSnippetCommand)); }
        }

        private ObservableCollection<CompilerError> _errors;
        /// <summary>
        /// Gets or sets the errors.
        /// </summary>
        public ObservableCollection<CompilerError> Errors
        {
            get { return _errors; }
            set { _errors = value; RaisePropertyChangedAuto(); }
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="CodeTabVM"/> class.
        /// </summary>
        public CodeTabVM()
        {
            Title = "untitled";
            Code = Properties.Resources.CodeTabTemplate;
            Errors = new ObservableCollection<CompilerError>();
        }

        /// <summary>
        /// Returns a <see cref="System.String" /> that represents this instance.
        /// </summary>
        /// <returns>
        /// A <see cref="System.String" /> that represents this instance.
        /// </returns>
        public override string ToString()
        {
            return Title;
        }
    }
}