using JsonRPC4.Common;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace JsonRPC4.Router
{
	public class ParsingResult
	{
		public List<RpcRequest> Requests
		{
			get;
		}

		public List<(RpcId Id, RpcError Error)> Errors
		{
			get;
		}

		public bool IsBulkRequest
		{
			get;
		}

		public int RequestCount => Requests.Count + Errors.Count;

		public ParsingResult(List<RpcRequest> requests, List<(RpcId, RpcError)> errors, bool isBulkRequest)
		{
			Requests = requests;
			Errors = errors;
			IsBulkRequest = isBulkRequest;
		}

		internal static ParsingResult FromResults(List<RpcRequestParseResult> results, bool isBulkRequest)
		{
			List<RpcRequest> list = new List<RpcRequest>();
			List<(RpcId, RpcError)> list2 = new List<(RpcId, RpcError)>();
			foreach (RpcRequestParseResult result in results)
			{
				if (result.Error != null)
				{
					list2.Add((result.Id, result.Error));
				}
				else
				{
					list.Add(new RpcRequest(result.Id, result.Method, result.Parameters));
				}
			}
			isBulkRequest = (isBulkRequest || list.Count + list2.Count > 1);
			return new ParsingResult(list, list2, isBulkRequest);
		}
	}
}