using ln.json.mapping;
using System;
using System.IO;

namespace ln.json
{
    public abstract class JSONMappedObject
    {
        FileSystemWatcher watcher;
        string jsonFileName;
        object o;

        public JSONMappedObject() { }
        public JSONMappedObject(String jsonFile)
        {
            this.jsonFileName = jsonFile;
            this.o = this;

            watcher = new FileSystemWatcher(Path.GetDirectoryName(jsonFile));
            watcher.Filter = Path.GetFileName(jsonFile);
            watcher.Changed += (s, e) => mapJSON();
            watcher.Created += (s, e) => mapJSON();

            watcher.EnableRaisingEvents = true;

            mapJSON();
        }
        public JSONMappedObject(String jsonFile,object o)
        {
            this.jsonFileName = jsonFile;
            this.o = o;

            watcher = new FileSystemWatcher(Path.GetDirectoryName(jsonFile));
            watcher.Filter = Path.GetFileName(jsonFile);
            watcher.Changed += (s, e) => mapJSON();
            watcher.Created += (s, e) => mapJSON();

            watcher.EnableRaisingEvents = true;

            mapJSON();
        }

        void mapJSON()
        {
            //Logging.Log(LogLevel.DEBUG, "File {0} changed. Remapping...", jsonFileName);

            if (File.Exists(jsonFileName))
            {
                JSONValue jsonValue = JSONParser.ParseFile(jsonFileName);
                if (jsonValue is JSONObject jsonObject)
                {
                    JSONMapper mapper = new JSONMapper();
                    mapper.Apply(jsonObject, this.o);
                }
            }
        }


    }
}