using LibW4M.Data.WeaponFactory;
using LibXom.Data;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

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

        public override void Load()
        {
            int[] decompressedCollective = mainContainer.Decompress();
            int numTeams = decompressedCollective[0];
            for (int i = 0; i < numTeams; i++)
            {
                TeamData team = new TeamData(this.fileBelongs, this.fileBelongs.xomFile.GetContainerById(decompressedCollective[i + 1]));
                this.collectiveEntries.Add(team);
            }
        }

        public override void Save()
        {
            // Annoyingly, in the actual XOM Highscore Data is stored alongside teamdata in the collective, 
            // this means to save properly, we need to copy the highscore data and write it back after,
            // For consistancy and my sanity, i have abstracted this away, so highscore data has its own collective.

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

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

            // Recalculate collective size and offsets
            int sz = this.Length;
            int[] collective = new int[(sz + 1) + (highScoreData.Length)];
            collective[0] = sz;
            for (int i = 0; i < sz; i++)
            {
                TeamData team = collectiveEntries[i] as TeamData;
                team.Save();
                collective[i + 1] = team.mainContainer.Id;
            }

            // Copy highscore data back to the collective.
            Array.ConstrainedCopy(highScoreData, 0, collective, sz + 1, highScoreData.Length);

            // Compress whole collective and update the underlying container.
            mainContainer.CompressAndUpdate(collective);
        }
    }
}