using LibW4M.Data.Highscores;
using LibW4M.Data.Teams;
using LibXom.Data;
using LibXom.Streams;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace LibW4M.Data.Stats
{
    public class StatsCollective : SaveDataCollective
    {
        public StatsCollective(W4SaveFile fileBelongs, XomContainer mainContainer) : base(fileBelongs, mainContainer)
        {
        }

        public override void Create()
        {
            StatsContainerData stat = new StatsContainerData(this.fileBelongs, this.fileBelongs.CreateContainer("StatsContainer"), false);
            this.collectiveEntries.Add(stat);
        }

        public override void Load()
        {
            int[] decompressedCollective = mainContainer.Decompress();
            int numStats = decompressedCollective[0];
            for (int i = 0; i < numStats; i++)
            {
                StatsContainerData stat = new StatsContainerData(this.fileBelongs, this.fileBelongs.LookupContainerById(decompressedCollective[i + 1]));
                this.collectiveEntries.Add(stat);
            }

        }

        public override void Save()
        {
            // Once again Team17 stores multiple different types of  data here
            // a generic one i dunno whats for besides to make the filesize huge..
            // and one for team stats ..

            // to make thins easier im gonna abstract it away as two different collectives
            // like i did on the highscores .

            int[] decompressedCollective = mainContainer.Decompress();
            int oldLen = decompressedCollective[0];

            // Copy Team Stats data.
            int[] teamStatsData = new int[(decompressedCollective.Length - (oldLen + 1))];
            Array.ConstrainedCopy(decompressedCollective, oldLen + 1, teamStatsData, 0, teamStatsData.Length);

            // Recalculate collective size and offsets

            int sz = this.Length;
            int[] collective = new int[(sz + 1) + (teamStatsData.Length)];
            collective[0] = sz;
            for (int i = 0; i < sz; i++)
            {
                StatsContainerData statsData = collectiveEntries[i] as StatsContainerData;
                if (statsData is null) continue;

                statsData.Save();
                collective[i + 1] = statsData.mainContainer.Id;
            }

            // Copy Team Stats data back to the collective.
            Array.ConstrainedCopy(teamStatsData, 0, collective, sz + 1, teamStatsData.Length);

            mainContainer.CompressAndUpdate(collective);
        }
    }
}