using System.IO;
using System.Collections.Generic;
using CodeImp.DoomBuilder.ZDoom;
using CodeImp.DoomBuilder.GZBuilder.Data;

//mxd. Modeldef parser used to create ScriptItems for use in script editor's navigator
namespace CodeImp.DoomBuilder.GZBuilder.GZDoom {
    internal sealed class ModeldefParserSE : ZDTextParser {
        private List<ScriptItem> models;
        internal List<ScriptItem> Models { get { return models; } }

        public ModeldefParserSE() {
            models = new List<ScriptItem>();
        }

        public override bool Parse(Stream stream, string sourcefilename) {
            base.Parse(stream, sourcefilename);

            // Continue until at the end of the stream
            while (SkipWhitespace(true)) {
                string token = ReadToken();

                if (!string.IsNullOrEmpty(token)) {
                    token = token.ToUpperInvariant();

                    if(token == "MODEL"){
                        int startPos = (int)stream.Position - 6;
                        SkipWhitespace(true);
                        string modelName = ReadToken();
                        SkipWhitespace(true);
                        token = ReadToken(); //this should be "{"

                        if (token == "{") {
                            ScriptItem i = new ScriptItem(0, modelName, startPos, (int)stream.Position - 2);
                            models.Add(i);
                        }
                    }
                }
            }

            //sort nodes
            models.Sort(ScriptItem.SortByName);
            return true;
        }
    }
}