namespace Modbus.Data
{
    /// <summary>
    ///     Data story factory.
    /// </summary>
    public static class DataStoreFactory
    {
        /// <summary>
        ///     Factory method for default data store - register values set to 0 and discrete values set to false.
        /// </summary>
        public static DataStore CreateDefaultDataStore()
        {
            return CreateDefaultDataStore(ushort.MaxValue, ushort.MaxValue, ushort.MaxValue, ushort.MaxValue);
        }

        /// <summary>
        ///     Factory method for default data store - register values set to 0 and discrete values set to false.
        /// </summary>
        /// <param name="coilsCount">Number of discrete coils.</param>
        /// <param name="inputsCount">Number of discrete inputs.</param>
        /// <param name="holdingRegistersCount">Number of holding registers.</param>
        /// <param name="inputRegistersCount">Number of input registers.</param>
        /// <returns>New instance of Data store with defined inputs/outputs.</returns>
        public static DataStore CreateDefaultDataStore(ushort coilsCount, ushort inputsCount, ushort holdingRegistersCount, ushort inputRegistersCount)
        {
            var coils = new bool[coilsCount];
            var inputs = new bool[inputsCount];
            var holdingRegs = new ushort[holdingRegistersCount];
            var inputRegs = new ushort[inputRegistersCount];

            return new DataStore(coils, inputs, holdingRegs, inputRegs);
        }

        /// <summary>
        ///     Factory method for test data store.
        /// </summary>
        internal static DataStore CreateTestDataStore()
        {
            DataStore dataStore = new DataStore();

            for (int i = 1; i < 3000; i++)
            {
                bool value = i % 2 > 0;
                dataStore.CoilDiscretes.Add(value);
                dataStore.InputDiscretes.Add(!value);
                dataStore.HoldingRegisters.Add((ushort)i);
                dataStore.InputRegisters.Add((ushort)(i * 10));
            }

            return dataStore;
        }
    }
}