using DiunaBIWebAPI.dataProcessors;
using Google.Apis.Sheets.v4;
using Google.Apis.Sheets.v4.Data;
using Microsoft.EntityFrameworkCore;
using WebAPI.Controllers;
using WebAPI.Models;

namespace WebAPI.dataProcessors
{
    public class T3MultiSourceCopySelectedCodesProcessor
    {
        private readonly AppDbContext db;
        private readonly SpreadsheetsResource.ValuesResource googleSheetValues;
        private readonly LayersController controller;

        public T3MultiSourceCopySelectedCodesProcessor(
            AppDbContext _db,
            SpreadsheetsResource.ValuesResource _googleSheetValues,
            LayersController _controller)
        {
            db = _db;
            googleSheetValues = _googleSheetValues;
            controller = _controller;
        }

        public void Process(Layer processWorker)
        {
            var year = int.Parse(processWorker!.Records?.SingleOrDefault(x => x.Code == "Year")?.Desc1!);
            var month = int.Parse(processWorker!.Records?.SingleOrDefault(x => x.Code == "Month")?.Desc1!);
            var sources = processWorker.Records?.Where(x => x.Code == "Source").ToList();
            if (!sources!.Any())
            {
                throw new Exception("Source record not found");
            }
            var codes = processWorker.Records?.SingleOrDefault(x => x.Code == "Codes")?.Desc1;
            if (codes == null)
            {
                throw new Exception("Codes record not found");
            }

            var codesList = ProcessHelper.ParseCodes(codes);

            var processedLayer = db.Layers
                                    .Where(x => x.ParentId == processWorker!.Id
                                                && !x.IsDeleted)
                                    .OrderByDescending(x => x.CreatedAt)
                                    .FirstOrDefault();

            var isNew = false;
            if (processedLayer == null)
            {
                isNew = true;
                processedLayer = new Layer
                {
                    Id = Guid.NewGuid(),
                    Source = "",
                    Type = LayerType.processed,
                    ParentId = processWorker!.Id,
                    Number = db.Layers.Count() + 1
                };
                processedLayer.Name = $"L{processedLayer.Number}-P-{year}/{month}-AB-T3";
                processedLayer.CreatedById = Guid.Parse("F392209E-123E-4651-A5A4-0B1D6CF9FF9D");
                processedLayer.ModifiedById = Guid.Parse("F392209E-123E-4651-A5A4-0B1D6CF9FF9D");
                processedLayer.CreatedAt = DateTime.UtcNow;
                processedLayer.ModifiedAt = DateTime.UtcNow;
            }
            processedLayer.Sources = new List<ProcessSource>();
            processedLayer.ModifiedById = Guid.Parse("F392209E-123E-4651-A5A4-0B1D6CF9FF9D");
            processedLayer.ModifiedAt = DateTime.UtcNow;

            var dataSources = sources!.Select(source => db.Layers.Where(x => x.Type == LayerType.processed && !x.IsDeleted && x.Name != null && x.Name.Contains($"{year}/{month}-{source.Desc1}-T3"))
                    .Include(x => x.Records)
                    .FirstOrDefault())
                .OfType<Layer>()
                .ToList();
            if (dataSources.Count == 0)
            {
                throw new Exception($"DataSources are empty");
            }


            var newRecords = dataSources
                .SelectMany(x => x.Records!)
                .Where(x => codesList.Contains(int.Parse(x.Code!)))
                .Select(x =>
                {
                    var newRecord = new Record
                    {
                        Id = Guid.NewGuid(),
                        Code = x.Code,
                        CreatedAt = DateTime.UtcNow,
                        ModifiedAt = DateTime.UtcNow
                    };
                    for (var i = 1; i < 33; i++)
                    {
                        ProcessHelper.SetValue(newRecord, i, ProcessHelper.GetValue(x, i));
                    }
                    return newRecord;
                })
                .ToList();
            if (isNew)
            {
                db.Layers.Add(processedLayer);
            }
            else
            {
                db.Layers.Update(processedLayer);
            }
            controller.SaveRecords(processedLayer.Id, newRecords, Guid.Parse("F392209E-123E-4651-A5A4-0B1D6CF9FF9D"));
            db.SaveChanges();
        }
    }
}