using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using GitHub.DistributedTask.Expressions2;
using GitHub.DistributedTask.Expressions2.Sdk;
using GitHub.DistributedTask.ObjectTemplating;
using GitHub.DistributedTask.WebApi;
using GitHub.Runner.Common;
using GitHub.Runner.Common.Util;
using GitHub.Runner.Sdk;
using ObjectTemplating = GitHub.DistributedTask.ObjectTemplating;
using PipelineTemplateConstants = GitHub.DistributedTask.Pipelines.ObjectTemplating.PipelineTemplateConstants;

namespace GitHub.Runner.Worker.Expressions
{
    public sealed class SuccessFunction : Function
    {
        protected sealed override object EvaluateCore(EvaluationContext evaluationContext, out ResultMemory resultMemory)
        {
            resultMemory = null;
            var templateContext = evaluationContext.State as TemplateContext;
            ArgUtil.NotNull(templateContext, nameof(templateContext));
            var executionContext = templateContext.State[nameof(IExecutionContext)] as IExecutionContext;
            ArgUtil.NotNull(executionContext, nameof(executionContext));

            // Decide based on 'action_status' for composite MAIN steps and 'job.status' for pre, post and job-level steps
            var isCompositeMainStep = executionContext.IsEmbedded && executionContext.Stage == ActionRunStage.Main;
            if (isCompositeMainStep)
            {
                ActionResult actionStatus = EnumUtil.TryParse<ActionResult>(executionContext.GetGitHubContext("action_status")) ?? ActionResult.Success;
                return actionStatus == ActionResult.Success;
            }
            else
            {
                ActionResult jobStatus = executionContext.JobContext.Status ?? ActionResult.Success;
                return jobStatus == ActionResult.Success;
            }
        }
    }
}