using DigitalData.TaskFlow.API.Contracts.Workflows;
using DigitalData.TaskFlow.Application.Features.Workflows.Commands.CloseWorkflow;
using DigitalData.TaskFlow.Application.Features.Workflows.Queries.GetWorkflows;
using DigitalData.TaskFlow.Domain.Closing;
using DigitalData.TaskFlow.Domain.Common;
using DigitalData.TaskFlow.Domain.Workflows;
using MediatR;
using Microsoft.AspNetCore.Mvc;

namespace DigitalData.TaskFlow.API.Controllers;

/// <summary>
/// Provides workflow read and close endpoints.
/// </summary>
[ApiController]
[Route("api/workflows")]
public sealed class WorkflowsController(ISender sender) : ControllerBase
{
    /// <summary>
    /// Returns open workflows for a WISAG user identifier.
    /// </summary>
    /// <param name="wisagId">WISAG user identifier.</param>
    /// <param name="cancellationToken">Cancellation token.</param>
    /// <returns>Workflow response envelope grouped by source.</returns>
    [HttpGet("{wisagId:int}")]
    [ProducesResponseType(typeof(ApiEnvelope<WorkflowSourcesResponse>), StatusCodes.Status200OK)]
    [ProducesResponseType(typeof(ApiEnvelope<object>), StatusCodes.Status400BadRequest)]
    [ProducesResponseType(typeof(ApiEnvelope<object>), StatusCodes.Status500InternalServerError)]
    public async Task<ActionResult<ApiEnvelope<WorkflowSourcesResponse>>> GetAsync(
        [FromRoute] int wisagId,
        CancellationToken cancellationToken)
    {
        var response = await sender.Send(new GetWorkflowsQuery(wisagId), cancellationToken);
        return Ok(response);
    }

    /// <summary>
    /// Applies a closing decision to a workflow process.
    /// </summary>
    /// <param name="wisagId">WISAG user identifier.</param>
    /// <param name="source">Source system name.</param>
    /// <param name="processId">Process identifier.</param>
    /// <param name="request">Closing request payload.</param>
    /// <param name="cancellationToken">Cancellation token.</param>
    /// <returns>Close result envelope.</returns>
    [HttpPost("{wisagId:int}/{source}/{processId:int}/closing")]
    [ProducesResponseType(typeof(ApiEnvelope<CloseWorkflowResult>), StatusCodes.Status200OK)]
    [ProducesResponseType(typeof(ApiEnvelope<object>), StatusCodes.Status400BadRequest)]
    [ProducesResponseType(typeof(ApiEnvelope<object>), StatusCodes.Status500InternalServerError)]
    public async Task<ActionResult<ApiEnvelope<CloseWorkflowResult>>> CloseAsync(
        [FromRoute] int wisagId,
        [FromRoute] string source,
        [FromRoute] int processId,
        [FromBody] CloseWorkflowRequest request,
        CancellationToken cancellationToken)
    {
        var command = new CloseWorkflowCommand(
            wisagId,
            source,
            processId,
            request.ClosingMethodId,
            request.Comment,
            request.RejectionReasonId);

        var response = await sender.Send(command, cancellationToken);
        return Ok(response);
    }
}