using AddInPlugin.Util;
using OpenTap;
using OpenTap.Addin.Annotation;
using System;
using System.Collections.ObjectModel;
using System.Linq;
using System.Xml.Serialization;

namespace AddInPlugin
{
    [Display("Goto", Group: "流程控制", Order: 0)]
    public class GotoStep : TestStep
    {
        private string condition;
        [Display("条件")]
        public string Condition
        {
            get => condition;
            set
            {
                condition = value;
                OnPropertyChanged(nameof(Condition));
            }
        }

        private Guid nextId;
        [Display("To")]
        [DynamicSelect("Datasource", "Name", "Id")]
        public Guid NextId
        {
            get => nextId;
            set
            {
                nextId = value;
                OnPropertyChanged(nameof(NextId));
            }
        }

        [XmlIgnore]
        public ObservableCollection<ITestStep> Datasource
        {
            get => new ObservableCollection<ITestStep>(Parent.ChildTestSteps.Where(e => e.Id != this.Id).ToList());
        }

        public GotoStep() : base()
        {
            Rules.Add(() => Datasource.FirstOrDefault(e => e.Id == NextId) != null, "指定步骤应该在序列中", nameof(NextId));
        }

        public override void Run()
        {
            try
            {
                var targetId = NextId;
                if (string.IsNullOrEmpty(Condition))
                {
                    StepRun.SuggestedNextStep = targetId;
                }
                else if (PlanRun.Resolve<bool>(this, Condition))
                {
                    StepRun.SuggestedNextStep = targetId;
                }
                UpgradeVerdict(Verdict.NotSet);
            }
            catch (Exception ex)
            {
                Log.Error("Goto error. {0}", ex);
                UpgradeVerdict(Verdict.Error);
            }
        }

        public override void PostPlanRun()
        {
        }
    }
}