using System;

using FMOD.Studio;
using FMODUnity;
using Gamecraft.Wires;
using RobocraftX.Blocks;
using Svelto.ECS;
using Unity.Mathematics;

using GamecraftModdingAPI;
using GamecraftModdingAPI.Utility;

namespace GamecraftModdingAPI.Blocks
{
    public class MusicBlock : Block
    {
        public static MusicBlock PlaceNew(float3 position,
            float3 rotation = default, BlockColors color = BlockColors.Default, byte darkness = 0,
            int uscale = 1, float3 scale = default, Player player = null)
        {
            if (PlacementEngine.IsInGame && GameState.IsBuildMode())
            {
                EGID id = PlacementEngine.PlaceBlock(BlockIDs.MusicBlock, color, darkness,
                    position, uscale, scale, player, rotation);
                return new MusicBlock(id);
            }

            return null;
        }
        
        public MusicBlock(EGID id) : base(id)
        {
            if (!BlockEngine.GetBlockInfoExists<MusicBlockDataEntityStruct>(this.Id))
            {
                throw new BlockTypeException($"Block is not a {this.GetType().Name} block");
            }
        }

        public MusicBlock(uint id) : base(id)
        {
            if (!BlockEngine.GetBlockInfoExists<MusicBlockDataEntityStruct>(this.Id))
            {
                throw new BlockTypeException($"Block is not a {this.GetType().Name} block");
            }
        }

        public byte TrackIndex
        {
            get
            {
                return BlockEngine.GetBlockInfo<MusicBlockDataEntityStruct>(Id).trackIndx;
            }

            set
            {
                ref MusicBlockDataEntityStruct msdes = ref BlockEngine.GetBlockInfo<MusicBlockDataEntityStruct>(Id);
                msdes.trackIndx = value;
            }
        }

        public Guid Track
        {
            get
            {
                ref MusicBlockDataEntityStruct msdes = ref BlockEngine.GetBlockInfo<MusicBlockDataEntityStruct>(Id);
                return msdes.fmod2DEventPaths.Get<Guid>(msdes.trackIndx);
            }

            set
            {
                ref MusicBlockDataEntityStruct msdes = ref BlockEngine.GetBlockInfo<MusicBlockDataEntityStruct>(Id);
                for (byte i = 0; i < msdes.fmod2DEventPaths.Count<Guid>(); i++)
                {
                    Guid track = msdes.fmod2DEventPaths.Get<Guid>(i);
                    if (track == value)
                    {
                        msdes.trackIndx = i;
                        break;
                    }
                }
            }
        }

        public Guid[] Tracks
        {
            get
            {
                ref MusicBlockDataEntityStruct msdes = ref BlockEngine.GetBlockInfo<MusicBlockDataEntityStruct>(Id);
                Guid[] tracks = new Guid[msdes.fmod2DEventPaths.Count<Guid>()];
                for (byte i = 0; i < tracks.Length; i++)
                {
                    tracks[i] = msdes.fmod2DEventPaths.Get<Guid>(i);
                }
                return tracks;
            }
        }

        public float Volume
        {
            get
            {
                return BlockEngine.GetBlockInfo<MusicBlockDataEntityStruct>(Id).tweakableVolume;
            }

            set
            {
                ref MusicBlockDataEntityStruct msdes = ref BlockEngine.GetBlockInfo<MusicBlockDataEntityStruct>(Id);
                msdes.tweakableVolume = value;
            }
        }

        public ChannelType ChannelType
        {
            get
            {
                return (ChannelType)BlockEngine.GetBlockInfo<MusicBlockDataEntityStruct>(Id).channelType;
            }
            
            set
            {
                ref MusicBlockDataEntityStruct msdes = ref BlockEngine.GetBlockInfo<MusicBlockDataEntityStruct>(Id);
                msdes.channelType = (byte)value;
            }
        }

        public bool IsPlaying
        {
            get
            {
                return BlockEngine.GetBlockInfo<MusicBlockDataEntityStruct>(Id).isPlaying;
            }

            set
            {
                ref MusicBlockDataEntityStruct msdes = ref BlockEngine.GetBlockInfo<MusicBlockDataEntityStruct>(Id);
                if (msdes.isPlaying == value) return;
                if (value)
                {
                    // start playing
                    EventInstance inst = RuntimeManager.CreateInstance(msdes.fmod2DEventPaths.Get<Guid>(msdes.trackIndx));
                    inst.setVolume(msdes.tweakableVolume / 100f);
                    inst.start();
                    msdes.eventHandle = inst.handle;
                }
                else
                {
                    // stop playing
                    EventInstance inst = default(EventInstance);
                    inst.handle = msdes.eventHandle;
                    inst.stop(FMOD.Studio.STOP_MODE.ALLOWFADEOUT);
                    inst.release();
                }
                msdes.isPlaying = value;
            }
        }
    }
}