using AutoMapper;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using PARR.API.Contracts.V1;
using PARR.API.Contracts.V1.Requests.Queries;
using PARR.API.Contracts.V1.Responses;
using PARR.API.Contracts.V1.Responses.Base;
using PARR.API.Controllers.V1.Base;
using PARR.API.Extensions;
using PARR.BLL.Helpers;
using PARR.DAL.Contracts;
using PARR.DAL.DomainModels;
using PARR.DAL.Models;
using PARR.DAL.Services.Interfaces;

namespace PARR.API.Controllers.V1
{
    public class TemplateController : BaseApiController
    {
        private readonly IMapper mapper;
        private readonly ITemplateService templateService;

        public TemplateController(
            IMapper mapper,
            ITemplateService templateService
            )
        {
            this.mapper = mapper;
            this.templateService = templateService;
        }


        /// <summary>
        /// Получить список всех шаблонов постранично
        /// </summary>
        /// <param name="paginationQuery"></param>
        /// <returns></returns>
        [HttpGet(ApiRoutes.Template.GetAll)]
        public async Task<IActionResult> GetAll([FromQuery] PaginationQuery paginationQuery, [FromQuery] TemplateQuery filter)
        {
            var paginationFilter = mapper.Map<PaginationFilter>(paginationQuery);

            IQueryable<Template> query = templateService.GetWithIncludes()
                                                             .OrderBy(t => t.Name)
                                                             .AsSplitQuery();

            if (filter.StatusCode.HasValue)
            {
                switch (filter.StatusCode.Value)
                {
                    case (int)StatusTemplateEnum.Ok:
                        query = query.Where(t => t.StatusCode == (int)StatusTemplateEnum.Ok);
                        break;
                    case (int)StatusTemplateEnum.Creating:
                        query = query.Where(t => t.StatusCode == (int)StatusTemplateEnum.Creating);
                        break;
                    case (int)StatusTemplateEnum.Updating:
                        query = query.Where(t => t.StatusCode == (int)StatusTemplateEnum.Updating);
                        break;
                    default:
                        break;
                }
            }

            if (!string.IsNullOrEmpty(filter.Mask))
                query = query.Where(t => EF.Functions.Like(t.Name.ToLower(), SqlHelpers.RegexToLike(filter.Mask)));

            var templates = await templateService.GetPage(query, paginationFilter).ToListAsync();

            if (!templates.Any())
                return NoContent();

            var templateResponse = mapper.Map<List<TemplateResponse>>(templates);
            var paginationResponse = new PagedResponse<TemplateResponse>(templateResponse, true).GetPaginatedProps(paginationFilter, query);

            return Ok(paginationResponse);
        }

        /// <summary>
        /// Получить шаблон по id
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        [HttpGet(ApiRoutes.Template.Get)]
        public async Task<IActionResult> GetById([FromRoute] Guid id)
        {
            var template = await templateService.GetWithIncludes()
                                .AsSplitQuery()
                                .FirstOrDefaultAsync(t => t.Id == id);

            if (template == null)
                return NotFound();

            var response = mapper.Map<TemplateResponse>(template);

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

        /// <summary>
        /// Получить один шаблон по заданному статусу
        /// </summary>
        /// <param name="statusCode"></param>
        /// <returns></returns>
        [HttpGet(ApiRoutes.Template.GetByStatusCode)]
        public async Task<IActionResult> GetByStatus([FromRoute] int statusCode, [FromQuery] RobinQuery query)
        {
            //Тут узкое место, так как возвращается первый, елси будет много роботов, то будет возвращаться им один и тот же элемент. 
            //нужно вводить статус, что эл уже занят
            var template = await templateService.GetWithIncludes()
                               .AsSplitQuery()
                               .FirstOrDefaultAsync(t => t.StatusCode == statusCode);

            if (template == null)
                return NotFound();

            var response = mapper.Map<TemplateResponse>(template);

            if (query.Robin == true)
            {
                var stringResponse = mapper.Map<TemplateStringResponse>(response);
                return Ok(stringResponse);
            }

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


        /// <summary>
        /// Установить статус ОК для шаблона с id
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        [HttpPut(ApiRoutes.Template.SetOkStatus)]
        public async Task<IActionResult> SetOkStatus([FromRoute] Guid id)
        {
            var template = await templateService.GetWithIncludes()
                               .AsSplitQuery()
                               .FirstOrDefaultAsync(t => t.Id == id);

            if (template == null)
                return BadRequest(new Response(false, new List<ErrorModel> { new ErrorModel { Message = $"Не найден шаблон с id: {id}" } }));

            template.StatusCode = (int)StatusTemplateEnum.Ok;

            if (!await templateService.CommitAsync())
                return BadRequest(new Response(false, new List<ErrorModel> { new ErrorModel { Message = $"Ошибка при изменении статуса у шаблона с id: {id}" } }));

            var response = mapper.Map<TemplateResponse>(template);

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


    }
}