using System;
using System.Collections.Generic;
using UnityEngine;

namespace Game
{
    public interface IProcedureManager
    {
        //  void StartProcedure<T>() where T : IProcedure;
        void StartProcedure(ProcedureType procedureType);

        // void ChangeProcedure<T>();
        void ChangeProcedure(ProcedureType procedureType);

        IProcedure GetProcedure(ProcedureType procedureType);
    }

    class ProcedureManager : ManagerBase, IProcedureManager
    {
        private Dictionary<ProcedureType, IProcedure> _procedures = new Dictionary<ProcedureType, IProcedure>();
        private IProcedure currentProcedure;

        protected override void OnInit()
        {
            base.OnInit();

            var types = new List<(Type, ProcedureAttribute)>();
            AssemblyManager.GetTypesInhertType(typeof(ProcedureBase), types);
            foreach (var (type, procedureAttribute) in types)
            {
                var procedureType = procedureAttribute.ProcedureType;
                _procedures.Add(procedureType, (IProcedure)Activator.CreateInstance(type, false));
            }
            
            foreach (var procedureBase in _procedures.Values)
            {
                procedureBase.Init();
                Debug.Log($"add procedure : {procedureBase.procedureType}");
            }
        }

        protected override void OnDispose()
        {
            base.OnDispose();
            _procedures = null;
        }

        public void AddProcedure(ProcedureBase[] procedureBases)
        {
            foreach (var procedureBase in procedureBases)
            {
                procedureBase.Init();
                Debug.Log($"add procedure : {procedureBase.procedureType}");
                this._procedures.Add(procedureBase.procedureType, procedureBase);
            }
        }

        protected override void OnUpdate(float dateTime)
        {
            base.OnUpdate(dateTime);
            this.currentProcedure?.OnUpdate(dateTime);
        }

        public void StartProcedure(ProcedureType procedureType)
        {
            if (this.currentProcedure != null)
                this.currentProcedure.OnLeave();

            if (this._procedures.TryGetValue(procedureType, out var procedure))
            {
                this.currentProcedure = procedure;
                this.currentProcedure.OnEnter();
            }
        }

        public void ChangeProcedure(ProcedureType procedureType)
        {
            if (this.currentProcedure != null)
                this.currentProcedure.OnLeave();

            if (this._procedures.TryGetValue(procedureType, out var procedure))
            {
                this.currentProcedure = procedure;
                this.currentProcedure.OnEnter();
            }
        }

        public IProcedure GetProcedure(ProcedureType procedureType)
        {
            if (this._procedures.TryGetValue(procedureType, out var procedure))
            {
                return procedure;
            }

            return null;
        }
    }
}