using System;
using Entitas;
using JNGame.Sync.Frame.Entity;

namespace JNGame.Sync.Entity
{
    public class JNContexts : Entitas.IContexts
    {
        public virtual IContext[] allContexts => Array.Empty<IContext>();

        public JNSyncService Sync;

        public JNContexts()
        {
            for (var i = 0; i < allContexts.Length; i++)
            {
                (allContexts[i] as IJNContext)?.OnSyncStart();
            }
        }

        //给所有实体推帧
        public void Simulate()
        {
            for (var i = 0; i < allContexts.Length; i++)
            {
                (allContexts[i] as IJNContext)?.OnSyncUpdate(Sync.DeltaTime);
            }
        }

        public T GetContext<T>() where T : IContext
        {
            
            for (int i = 0; i < allContexts.Length; i++)
            {
                if (allContexts[i] is T) return (T)allContexts[i];
            }
            
            throw new InvalidOperationException($"No context of type {typeof(T).Name} was found.");  
            
        }
        
        //注入 JNSyncFrameService
        public void InitReference(JNSyncService data)
        {
            Sync = data;
            foreach (var context in allContexts)
            {
                (context as IJNContext)?.InitReference(data);
            }
        }
        
    }
}