using AutoMapper;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using PARR.API.Contracts.V1;
using PARR.API.Contracts.V1.Requests;
using PARR.API.Contracts.V1.Requests.Queries;
using PARR.API.Contracts.V1.Responses;
using PARR.API.Contracts.V1.Responses.Base;
using PARR.API.Contracts.V1.Responses.Statistics;
using PARR.API.Controllers.V1.Base;
using PARR.API.Services.Interfaces;
using PARR.Constants;
using PARR.DAL.Services.Interfaces;

namespace PARR.API.Controllers.V1.Statistics
{
    /// <summary>
    /// Статистика загрузки регламентными работами по ЗО
    /// </summary>
    [Authorize(Roles = ParrRoles.EsppRobot.RoleOrAdmin)]
    public class StatResponseAreaWorkLoadController : BaseApiController
    {
        private readonly ITemplateService templateService;
        private readonly IResponseAreaService responseAreaService;
        private readonly IMapper mapper;
        private readonly IWorkLoadService workLoadService;

        public StatResponseAreaWorkLoadController(
            ITemplateService templateService,
            IResponseAreaService responseAreaService,
            IMapper mapper,
            IWorkLoadService workLoadService
            )
        {
            this.templateService = templateService;
            this.responseAreaService = responseAreaService;
            this.mapper = mapper;
            this.workLoadService = workLoadService;
        }


        /// <summary>
        /// Статистика загрузки РР по всем ЗО 
        /// </summary>
        /// <returns></returns>
        [HttpGet(ApiRoutes.StatResponseAreaWorkLoad.GetAll)]
        public async Task<IActionResult> GetAll([FromQuery] WorkloadBaseQuery requestQuery)
        {
            var response = await GetStatisticsAsync(requestQuery);

            return Ok(new Response<List<StatResponseAreaWorkLoadResponse>>(response, true));
        }


        /// <summary>
        /// Статистика загрузки РР по списку ЗО
        /// </summary>
        /// <returns></returns>
        [HttpPost(ApiRoutes.StatResponseAreaWorkLoad.GetByResponseAreas)]
        public async Task<IActionResult> GetByResponseAreas([FromBody] StatResponseAreaWorkloadRequest request)
        {
            var response = await GetStatisticsAsync(request.Filter, request.ResponseAreas);

            return Ok(new Response<List<StatResponseAreaWorkLoadResponse>>(response, true));
        }


        private async Task<List<StatResponseAreaWorkLoadResponse>> GetStatisticsAsync(WorkloadBaseQuery requestQuery, List<int>? responseAreas = null)
        {
            var daysList = workLoadService.GetDatesForPeriod(requestQuery);

            IQueryable<DAL.Models.Template> query = templateService.Get()
                .Include(t => t.Host).ThenInclude(t => t.WorkGroup);

            query = workLoadService.FilterTemplatesQuery(query, requestQuery);

            if (responseAreas != null && responseAreas.Count() > 0)
                query = query.Where(t => responseAreas.Any(x => x == t.Host.WorkGroup.ResponseAreaCode));


            var groupedQuery = query.GroupBy(t => new { t.NextRun.DateTime.Date, t.Host!.WorkGroup!.ResponseAreaCode })
                .Select(t => new
                {
                    ResponseAreaCode = t.Key.ResponseAreaCode,
                    Date = t.Key.Date,
                    TemplateCount = t.Count()

                });

            var queryResult = await groupedQuery.ToListAsync();

            var responseAreaQuery = responseAreaService.Get();

            if (responseAreas != null && responseAreas.Count() > 0)
                responseAreaQuery = responseAreaQuery.Where(t => responseAreas.Any(x => x == t.Code));

            var allResponseArea = await responseAreaQuery.ToListAsync();

            //if (!allResponseArea.Any())
            //    return NoContent();

            var response = new List<StatResponseAreaWorkLoadResponse>();

            allResponseArea.ForEach(respArea =>
            {
                var workLoads = daysList.Select(t => new StatWorkLoadDataResponse
                {
                    Date = t,
                    TemplateCount = queryResult.FirstOrDefault(x => x.ResponseAreaCode == respArea.Code && x.Date.Date == t.Date)?.TemplateCount ?? 0
                }).OrderBy(t => t.Date).ToList();

                response.Add(
                    new StatResponseAreaWorkLoadResponse
                    {
                        ResponseArea = mapper.Map<ResponseAreaResponse>(respArea),
                        WorkLoad = workLoads
                    });
            });

            response = response.OrderBy(t => t.ResponseArea.Code).ToList();

            return response;
        }

    }
}