using Microsoft.AspNetCore.Mvc;
using PartSource.Data.Dtos;
using PartSource.Data.Models;
using PartSource.Data.Nexpart;
using PartSource.Services;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Part = PartSource.Data.Models.Part;

namespace PartSource.Api.Controllers
{
    [Route("v2/[controller]")]
    [ApiController]
    [ApiExplorerSettings(GroupName = "v1")]
    public class PartsController : BaseNexpartController
    {
        private readonly NexpartService _nexpartService;
        private readonly PartService _partService;
        private readonly VehicleService _vehicleService;
        private readonly FitmentService _fitmentService;

        public PartsController(NexpartService nexpartService, PartService partService, VehicleService vehicleService, FitmentService fitmentService)
        {
            _nexpartService = nexpartService;
            _partService = partService;
            _vehicleService = vehicleService;
            _fitmentService = fitmentService;
        }

        [HttpGet]
        [Route("fitment")]
        [Route("fitmentnote")]
        public async Task<ActionResult> GetFitment([FromQuery] string sku, [FromQuery] int vehicleId)
        {
            VehicleFitmentDto vehicleFitment = await _fitmentService.GetFitmentNotes(sku, vehicleId);

            if (vehicleFitment == null)
            {
                return NotFound();
            }

            return Ok(vehicleFitment);
        }

        [HttpGet]
        [Route("positions")]
        public async Task<ActionResult> GetPositions([FromQuery] string sku, [FromQuery] int vehicleId)
        {
            Part part = await _partService.GetPartBySku(sku);
            Vehicle vehicle = await _vehicleService.GetVehicleById(vehicleId);

            if (part == null || vehicle == null)
            {
                return BadRequest(new
                {
                    Message = $"No data is available for SKU {sku}. Confirm it is available in the database maintained by Sound Press.",
                    Reason = $"{nameof(_partService.GetPartBySku)} returned null"
                });
            }

            IList<DcfMapping> mappings = await _partService.GetDcfMapping(part.LineCode);
            Item[] items = mappings.Select(m => new Item
            {
                PartNumber = part.PartNumber,
                MfrCode = m.WhiCode
            })
            .ToArray();

            SmartPageDataSearch smartPageDataSearch = new SmartPageDataSearch
            {
                Items = items
            };

            SmartPageDataSearchResponse smartPageResponse = await _nexpartService.SendRequest<SmartPageDataSearch, SmartPageDataSearchResponse>(smartPageDataSearch);
            if (smartPageResponse.ResponseBody?.Item == null)
            {
                return NotFound(new
                {
                    Message = $"No WHI data is available for SKU {sku}",
                    Reason = $"{nameof(SmartPageDataSearch)} returned null"
                });
            }

            PartType[] partTypes = smartPageResponse.ResponseBody.Item.Select(i => new PartType
            {
                Id = i.Part.PartType.Id
            })
                .ToArray();

            ApplicationSearch applicationSearch = new ApplicationSearch
            {
                VehicleIdentifier = new VehicleIdentifier
                {
                    BaseVehicleId = vehicle.BaseVehicleId
                },
                MfrCode = mappings.Select(m => m.WhiCode).ToArray(),
                PartType = new[] { new PartType { Id = smartPageResponse.ResponseBody.Item[0].Part.PartType.Id } },
                Criterion = new[]
                    {
                        new Criterion
                        {
                            Attribute = "REGION",
                            Id = 2
                        }
                    },
                GroupBy = "PARTTYPE"
            };

            ApplicationSearchResponse response = await _nexpartService.SendRequest<ApplicationSearch, ApplicationSearchResponse>(applicationSearch);

            if (response.ResponseBody == null)
            {
                return NotFound(new
                {
                    Message = $"No WHI data is available for SKU {sku}",
                    Reason = $"{nameof(ApplicationSearch)} returned null"
                });
            }

            IList<string> positions = new List<string>();
            foreach (App app in response.ResponseBody?.App)
            {
                if (!string.IsNullOrEmpty(app.Position) && app.Part == part.PartNumber)
                {
                    positions.Add(app.Position);
                }
            }

            return Ok(new
            {
                VehicleId = vehicleId,
                Sku = sku,
                Positions = positions.Distinct()
            });
        }

    }
}