using System;
using Scada.AddIn.Contracts;
using Scada.AddIn.Contracts.Historian;
using System.Diagnostics;

namespace Samples
{
    [AddInExtension("Historian.RuntimeArchiveValue", "Project Wizard to create a filter, add variables to it and print out the values", "Samples")]
    public class ProjectWizardExtension_Historian_RuntimeArchiveValue : IProjectWizardExtension
    {
        public void Run(IProject context, IBehavior behavior)
        {
            IRuntimeArchive runtimeArchive = context.RuntimeArchiveCollection[0];

            if (runtimeArchive == null)
            {
                //There is no archive, the user will be informed...
                Debug.Print("No archive available!");
                return;
            }
            IRuntimeArchiveFilter ArchiveFilter = runtimeArchive.FilterCollection.Create();

            for (int i = 0; i < runtimeArchive.VariableCollection.Count; ++i)
            {
                //Add every archive variable to the archive filter
                ArchiveFilter.AddVariable(runtimeArchive.VariableCollection[i]);
            }

            IRuntimeArchiveFilterVariableCollection ArchiveVariables = ArchiveFilter.Query();

            //Get the first available filtered variable
            IRuntimeArchiveFilterVariable ArchiveFilterVariable = ArchiveVariables[0];

            if (ArchiveFilterVariable == null)
            {
                //If there is no variable available, inform the user
                Debug.Print("No filtered archive variable available!");
                return;
            }

            ArchiveFilterVariable.ArchiveValueCollection.Create();
            IRuntimeArchiveValue ArchiveValue = ArchiveFilterVariable.ArchiveValueCollection[0];

            if (ArchiveValue == null)
            {
                //No value available
                Debug.Print("No value available!");
            }
            else
            {
                //Output some information of the value
                Debug.Print("Date / Time: " + ArchiveValue.Time.ToString());

                Debug.Print("Recorded Value: " + ArchiveValue.Value);

                Debug.Print("State: &H" + ArchiveValue.HigherState.ToString());
            }
        }
    }
}