/******************************************************************************
 * Copyright (C) Ultraleap, Inc. 2011-2021.                                   *
 *                                                                            *
 * Use subject to the terms of the Apache License 2.0 available at            *
 * http://www.apache.org/licenses/LICENSE-2.0, or another agreement           *
 * between Ultraleap and you, your company or other organization.             *
 ******************************************************************************/

using System;

namespace Leap.Unity
{

    public class PipeFileSyntax
    {

        /// <summary> The file path, cleaned of any pipe syntax. </summary>
        public string path;
        public int numChannels = 1;
        public bool didParseNumChannels { get; private set; }
        public bool combineChannels = false;
        public bool didParseCombineChannels { get; private set; }

        public bool didParseAnyPipeSyntax
        {
            get { return didParseNumChannels || didParseCombineChannels; }
        }

        public PipeFileSyntax(string pathMaybeWithPipes)
        {
            string[] pipeArgs = pathMaybeWithPipes.Split('|');
            this.path = pipeArgs[0];
            if (pipeArgs.Length > 1)
            {
                this.didParseNumChannels = Int32.TryParse(pipeArgs[1],
                  out this.numChannels);
            }
            if (pipeArgs.Length > 2)
            {
                this.combineChannels = !string.IsNullOrEmpty(pipeArgs[2]) &&
                  (pipeArgs[2].ToUpper().Equals("T") ? true : false);
                this.didParseCombineChannels = true;
            }
        }

        public static PipeFileSyntax Parse(string pathMaybeWithPipes)
        {
            return new PipeFileSyntax(pathMaybeWithPipes);
        }

        public PipeFileSyntax ChangePath(string newPath)
        {
            this.path = newPath;
            return this;
        }

        public override string ToString()
        {
            var sb = new System.Text.StringBuilder();
            sb.Append(path);
            if (didParseNumChannels)
            {
                sb.Append("|"); sb.Append(numChannels);
                if (didParseCombineChannels)
                {
                    sb.Append("|"); sb.Append((combineChannels ? "T" : "F"));
                }
            }
            return sb.ToString();
        }

    }

}