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 T3R1Processor
    {
        private readonly AppDbContext db;
        private readonly SpreadsheetsResource.ValuesResource googleSheetValues;
        private readonly LayersController controller;
        private readonly LogsController logsController;

        public T3R1Processor(
            AppDbContext _db,
            SpreadsheetsResource.ValuesResource _googleSheetValues,
            LayersController _controller,
            LogsController _logsController)
        {
            db = _db;
            googleSheetValues = _googleSheetValues;
            controller = _controller;
            logsController = _logsController;
        }

        public void process(Layer processWorker)
        {
            int year = int.Parse(processWorker!.Records?.SingleOrDefault(x => x.Code == "Year")?.Desc1!);
            List<Record>? sources = processWorker.Records?.Where(x => x.Code == "Source").ToList();
            if (sources!.Count() == 0)
            {
                throw new Exception("Source record not found");
            }
            string? codes = processWorker.Records?.SingleOrDefault(x => x.Code == "Codes")?.Desc1;
            if (codes == null)
            {
                throw new Exception("Codes record not found");
            }
            List<int> codesList = ProcessHelper.parseCodes(codes);

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

            bool 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}-R1-T1";
                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;

            List<Layer> dataSources = new List<Layer>();

            foreach (Record source in sources!)
            {
                for (int month = 1; month <= DateTime.UtcNow.Month; month++)
                {
                    Layer? dataSource = 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();
                    if (dataSource != null)
                    {
                        dataSources.Add(dataSource);
                    }
                    else
                    {
                        logsController.AddEntry(new LogEntry
                        {
                            Title = $"{processWorker!.Name}, {processWorker.Id}",
                            Type = LogEntryType.warning,
                            LogType = LogType.process,
                            Message = $"Data source {year}/{month}-{source.Desc1}-T3 not found",
                            CreatedAt = DateTime.UtcNow
                        });
                    }
                }
                // year summary
                Layer? dataSourceSum = db.Layers.Where(x =>
                    x.Type == LayerType.processed &&
                    !x.IsDeleted &&
                    x.Name != null && x.Name.Contains($"{year}/13-{source.Desc1}-T3")
                    )
                    .Include(x => x.Records)
                    .FirstOrDefault();
                if (dataSourceSum != null)
                {
                    dataSources.Add(dataSourceSum);
                }
                else
                {
                    logsController.AddEntry(new LogEntry
                    {
                        Title = $"{processWorker!.Name}, {processWorker.Id}",
                        Type = LogEntryType.warning,
                        LogType = LogType.process,
                        Message = $"Data source {year}/13-{source.Desc1}-T3 not found",
                        CreatedAt = DateTime.UtcNow
                    });
                }
            }


            if (dataSources.Count == 0)
            {
                throw new Exception($"DataSources are empty");
            }

            List<Record> newRecords = dataSources
                .SelectMany(x => x.Records!)
                .Where(x => codesList.Contains(int.Parse(x.Code!)))
                .Select(x =>
                {
                    Layer? layer = dataSources.SingleOrDefault(y => y.Id == x.LayerId);
                    string postFix = layer!.Name!.Split("/")[1].Split("-")[0];
                    if (postFix.Length == 1)
                    {
                        postFix = "0" + postFix;
                    }

                    Record newRecord = new Record
                    {
                        Id = Guid.NewGuid(),
                        Code = x.Code + postFix,
                        CreatedAt = DateTime.UtcNow,
                        ModifiedAt = DateTime.UtcNow,
                        Value1 = x.Value32
                    };

                    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();

            updateReport();
        }

        public void updateReport()
        {
            string sheetId = "1pph-XowjlK5CIaCEV_A5buK4ceJ0Z0YoUlDI4VMkhhA";
            string sheetName = "Raport_R1_Eksport";
            SpreadsheetsResource.ValuesResource.GetRequest request = googleSheetValues.Get(sheetId, "C4:EX4");
            var response = request.Execute();

            Layer? R1 = db.Layers
                .Where(x => x.Number == 1205)
                .Include(x => x.Records)
                .FirstOrDefault();

            int startRow = 6;

            var codesRow = response.Values[0];
            for (int i = 1; i <= DateTime.UtcNow.Month; i++)
            {
                List<object> values = new List<object>();
                string month = i < 10 ? $"0{i}" : i.ToString();
                string row = (startRow + i).ToString();
                foreach (string code in codesRow)
                {
                    Record? record = R1!.Records?.SingleOrDefault(x => x.Code == $"{code}{month}");
                    if (record != null)
                    {
                        values.Add(record.Value1!.Value);
                    }
                    else
                    {
                        values.Add("0");
                    }
                }
                ValueRange ValueRange = new ValueRange
                {
                    Values = new List<IList<object>> { values }
                };
                SpreadsheetsResource.ValuesResource.UpdateRequest update = googleSheetValues.Update(ValueRange, sheetId, $"{sheetName}!C{row}:XZ{row}");
                update.ValueInputOption = SpreadsheetsResource.ValuesResource.UpdateRequest.ValueInputOptionEnum.USERENTERED;
                update.Execute();
            }
            
            // sum 
            List<object> valuesSum = new List<object>();
            List<object> emptyRow = new List<object>();
            string rowEmpty = (startRow + DateTime.UtcNow.Month + 1).ToString();            
            string rowSum = (startRow + DateTime.UtcNow.Month + 2).ToString();
            foreach (string code in codesRow)
            {
                Record? record = R1!.Records?.SingleOrDefault(x => x.Code == $"{code}13");
                emptyRow.Add("");
                if (record != null)
                {
                    valuesSum.Add(record.Value1!.Value);
                }
                else
                {
                    valuesSum.Add("0");
                }
            }
            // insert empty row before sum
            ValueRange valueRangeEmpty = new ValueRange
            {
                Values = new List<IList<object>> { emptyRow }
            };
            SpreadsheetsResource.ValuesResource.UpdateRequest updateEmpty = googleSheetValues.Update(valueRangeEmpty, sheetId, $"{sheetName}!C{rowEmpty}:XZ{rowEmpty}");
            updateEmpty.ValueInputOption = SpreadsheetsResource.ValuesResource.UpdateRequest.ValueInputOptionEnum.USERENTERED;
            updateEmpty.Execute();
            
            ValueRange ValueRangeSum = new ValueRange
            {
                Values = new List<IList<object>> { valuesSum }
            };
            SpreadsheetsResource.ValuesResource.UpdateRequest updateSum = googleSheetValues.Update(ValueRangeSum, sheetId, $"{sheetName}!C{rowSum}:XZ{rowSum}");
            updateSum.ValueInputOption = SpreadsheetsResource.ValuesResource.UpdateRequest.ValueInputOptionEnum.USERENTERED;
            updateSum.Execute();
        }
    }
}