// ------------------------------------------------------------------------------
// <auto-generated>
//     This code was generated by a tool.
// </auto-generated>
// ------------------------------------------------------------------------------

#nullable enable
#pragma warning disable IDE0005 // Extra using directive is ok.

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.Agents.AI;
using Microsoft.Agents.AI.Workflows;
using Microsoft.Agents.AI.Workflows.Declarative;
using Microsoft.Agents.AI.Workflows.Declarative.Kit;
using Microsoft.Extensions.AI;

namespace Test.WorkflowProviders;

/// <summary>
/// This class provides a factory method to create a <see cref="Workflow" /> instance.
/// </summary>
/// <remarks>
/// The workflow defined here was generated from a declarative workflow definition.
/// Declarative workflows utilize Power FX for defining conditions and expressions.
/// To learn more about Power FX, see:
/// https://learn.microsoft.com/power-platform/power-fx/formula-reference-copilot-studio
/// </remarks>
public static class WorkflowProvider
{
    /// <summary>
    /// The root executor for a declarative workflow.
    /// </summary>
    internal sealed class MyWorkflowRootExecutor<TInput>(
        DeclarativeWorkflowOptions options,
        Func<TInput, ChatMessage> inputTransform) :
        RootExecutor<TInput>("my_workflow_Root", options, inputTransform)
        where TInput : notnull
    {
        protected override async ValueTask ExecuteAsync(TInput message, IWorkflowContext context, CancellationToken cancellationToken)
        {
            // Set environment variables
            await this.InitializeEnvironmentAsync(
                context,
                "MY_STUDENT").ConfigureAwait(false);
    
        }
    }
    
    /// <summary>
    /// Invokes an agent to process messages and return a response within a conversation context.
    /// </summary>
    internal sealed class InvokeAgentExecutor(FormulaSession session, WorkflowAgentProvider agentProvider) : AgentExecutor(id: "invoke_agent", session, agentProvider)
    {
        // <inheritdoc />
        protected override async ValueTask<object?> ExecuteAsync(IWorkflowContext context, CancellationToken cancellationToken)
        {
            string? agentName = await context.ReadStateAsync<string>(key: "MY_STUDENT", scopeName: "Env").ConfigureAwait(false);
    
            if (string.IsNullOrWhiteSpace(agentName))
            {
                throw new DeclarativeActionException($"Agent name must be defined: {this.Id}");
            }
    
            string? conversationId = await context.ReadStateAsync<string>(key: "ConversationId", scopeName: "System").ConfigureAwait(false);
            bool autoSend = true;
            string? additionalInstructions = null;
            IList<ChatMessage>? inputMessages = await context.EvaluateListAsync<ChatMessage>("[UserMessage(System.LastMessageText)]").ConfigureAwait(false);
    
            AgentRunResponse agentResponse =
                await InvokeAgentAsync(
                    context,
                    agentName,
                    conversationId,
                    autoSend,
                    additionalInstructions,
                    inputMessages,
                    cancellationToken).ConfigureAwait(false);
    
            if (autoSend)
            {
                await context.AddEventAsync(new AgentRunResponseEvent(this.Id, agentResponse)).ConfigureAwait(false);
            }
    
            return default;
        }
    }
    
    public static Workflow CreateWorkflow<TInput>(
        DeclarativeWorkflowOptions options,
        Func<TInput, ChatMessage>? inputTransform = null) 
        where TInput : notnull
    {
        // Create root executor to initialize the workflow.
        inputTransform ??= (message) => DeclarativeWorkflowBuilder.DefaultTransform(message);
        MyWorkflowRootExecutor<TInput> myWorkflowRoot = new(options, inputTransform);
        DelegateExecutor myWorkflow = new(id: "my_workflow", myWorkflowRoot.Session);
        InvokeAgentExecutor invokeAgent = new(myWorkflowRoot.Session, options.AgentProvider);

        // Define the workflow builder
        WorkflowBuilder builder = new(myWorkflowRoot);

        // Connect executors
        builder.AddEdge(myWorkflowRoot, myWorkflow);
        builder.AddEdge(myWorkflow, invokeAgent);

        // Build the workflow
        return builder.Build(validateOrphans: false);
    }
}
