///
/// Copyright (c) 2015-2019 Sensus Metering Systems
/// Author: Milan Hanajík
///
using System;
using TBF.Rig.RegisterReaders.GenesisRegReader.implementations;

namespace TBF.Rig.TestMethods.GenesisCommunication
{
    /// <summary>Tracks one completion per worker, activity and group.</summary>
    public sealed class GenesisWorkerGroupCompletion
    {
        private readonly int workerCount;
        private readonly System.Collections.Generic.HashSet<int> completed = new System.Collections.Generic.HashSet<int>();
        private int activity, group;
        private bool released;
        public GenesisWorkerGroupCompletion(int workerCount)
        {
            if (workerCount < 1 || workerCount > 10) throw new ArgumentOutOfRangeException(nameof(workerCount));
            this.workerCount = workerCount;
        }
        public void Begin(int activityStep, int groupNumber)
        {
            lock (completed) { activity = activityStep; group = groupNumber; released = false; completed.Clear(); }
        }
        public bool Complete(int activityStep, int groupNumber, int worker)
        {
            lock (completed)
            {
                if (released || activityStep != activity || groupNumber != group || worker < 0 || worker >= workerCount) return false;
                if (!completed.Add(worker) || completed.Count != workerCount) return false;
                released = true;
                return true;
            }
        }
        public static System.Collections.Generic.IEnumerable<int> BoardIndexes(int worker, int workers, int boards)
        {
            if (workers < 1 || workers > 10 || worker < 0 || worker >= workers || boards < 0) throw new ArgumentOutOfRangeException();
            for (int index = worker; index < boards; index += workers) yield return index;
        }
    }

    public class CommCompletedEventArgs : EventArgs
    {
        public bool WorkerGroupCompleted;
        public int ActivityStep;
        public int Group;
        public int ThreadId;
        public int WMNr0;                   /// 0-based water meter position
        public GenesisSmartReader Ihead;
        public Results.Entities.WaterMeter Wm;
        public string CommMessage;
        public CommErr CommErr;

        public CommCompletedEventArgs(int threadId, int wmNr0, GenesisSmartReader ihead, Results.Entities.WaterMeter wm, string commMessage, CommErr commErr)
        {
            this.ThreadId = threadId;
            this.WMNr0 = wmNr0;
            this.Ihead = ihead;
            this.Wm = wm;
            this.CommMessage = commMessage;
            this.CommErr = commErr;
        }

        public override string ToString()
        {
            return string.Format("Thread={0} WMNr0={1} IHead={2} WM={3} CommMsg={4} CommErr={5}",
                                 ThreadId,
                                 WMNr0,
                                 (Ihead != null) ? Ihead.Name : "null",
                                 (Wm != null) ? Wm.WMPosition : -1,
                                 (CommMessage != null) ? CommMessage : "null",
                                 CommErr);
        }
    }
}