using FastEndpoints;
using FrameworkBLL.WorkFlow;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.DTO.Framework.ResponseStandard;
using GB5Shared.FastEndPoint;
using System.Text.Json;
using GB5Shared.DateConverter;
using static FrameworkDAL.Constant.Constant;

namespace FrameworkSL.Endpoints.WorkFlow
{
    /// <summary>
    /// GET /WorkFlow/CurrentApprovalStatus
    ///
    /// Returns the real-time approval status for a specific document.
    /// Shows the current approval level, who has the task, and the full step history.
    ///
    /// Query parameters:
    ///   EntityId — MENTITY.ENTITYID of the document
    ///   ObjectId — PK of the document record (e.g. TaskId)
    /// </summary>
    public class GetCurrentApprovalStatus
        : BaseEndpoint<GetCurrentApprovalStatus.CurrentApprovalStatusParameters,
                       ResponseStandardDTO<object>>
    {
        private readonly IWorkFlowBLL _bll;

        public GetCurrentApprovalStatus(IWorkFlowBLL bll) => _bll = bll;

        public override void Configure()
        {
            Get("/WorkFlow/CurrentApprovalStatus");
            AllowAnonymous();
        }

        public record CurrentApprovalStatusParameters(
            [property: FromHeader]     string Login,
            [property: QueryParam]     int    EntityId,
            [property: QueryParam]     int    ObjectId
        );

        protected override string? GetCacheKey(
            CurrentApprovalStatusParameters req, LoginDTO login) => null;

        protected override async Task<ResponseStandardDTO<object>> ExecuteAsync(
            CurrentApprovalStatusParameters req,
            LoginDTO login,
            CancellationToken ct)
        {
            try
            {
                var result = await _bll.CurrentApprovalStatus(req.EntityId, req.ObjectId, login);

                var options = new JsonSerializerOptions { PropertyNamingPolicy = null };
                options.AddGB5Converters();

                string json = JsonSerializer.Serialize(result, options);

                return await GB5Shared.ResponseStandard.Response
                    .CreateSuccessResponse(json, CacheKeyLevel.NotRequired, login);
            }
            catch (Exception ex)
            {
                return await GB5Shared.ResponseStandard.Response
                    .CreateExceptionError<string>(ex, CacheKeyLevel.NotRequired,
                        login, ex.Message, 500);
            }
        }
    }
}