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

namespace WebAPI.dataProcessors;

public class T1R1V2Processor(
    AppDbContext db,
    SpreadsheetsResource.ValuesResource googleSheetValues,
    LayersController controller,
    LogsController logsController)
{
    private readonly SpreadsheetsResource.ValuesResource _googleSheetValues = googleSheetValues;
    private readonly LogsController _logsController = logsController;

    public void Process(Layer processWorker)
    {
        var year = int.Parse(processWorker.Records?.SingleOrDefault(x => x.Code == "Year")?.Desc1!);
        var sources = processWorker.Records?.Where(x => x.Code == "Source").ToList();
        if (sources!.Count == 0)
        {
            throw new Exception("Source record not found");
        }

        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(),
                Type = LayerType.Processed,
                ParentId = processWorker.Id,
                Number = db.Layers.Count() + 1
            };
            processedLayer.Name = $"L{processedLayer.Number}-P-{year}-R1_V2-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.ModifiedById = Guid.Parse("F392209E-123E-4651-A5A4-0B1D6CF9FF9D");
        processedLayer.ModifiedAt = DateTime.UtcNow;

        var dynamicCodes = processWorker.Records?.Where(x => x.Code!.Contains("DynamicCode-"))
            .OrderBy(x => int.Parse(x.Code!.Split('-')[1]))
            .ToList();

        var newRecords = new List<Record>();

        for (var month = 1; month <= DateTime.UtcNow.Month; month++)
        {
            var records = new List<Record>();
            foreach (var source in sources)
            {
                var monthCopy = month;
                var dataSource = db.Layers.Where(x =>
                        x.Type == LayerType.Processed &&
                        !x.IsDeleted &&
                        x.Name != null && x.Name.Contains($"{year}/{monthCopy}-{source.Desc1}-T3")
                    ).Include(x => x.Records)
                    .FirstOrDefault();

                if (dataSource == null)
                {
                    throw new Exception($"Source layer {year}/{monthCopy}-{source.Desc1}-T3 not found.");
                }

                var codesRecord = processWorker.Records?.Where(x => x.Code == $"Codes-{source.Desc1}").FirstOrDefault();
                if (codesRecord != null)
                {
                    var codes = ProcessHelper.ParseCodes(codesRecord.Desc1!);
                    records.AddRange(dataSource.Records!.Where(x => codes.Contains(int.Parse(x.Code!))));
                }
                else
                {
                    records.AddRange(dataSource.Records!);
                }
            }

            if (dynamicCodes != null)
            {
                foreach (var dynamicCode in dynamicCodes)
                {
                    try
                    {
                        if (dynamicCode.Desc1 == null)
                        {
                            _logsController.AddEntry(new LogEntry
                            {
                                Title = $"{processWorker.Name}, {processWorker.Id}",
                                Type = LogEntryType.Warning,
                                LogType = LogType.Process,
                                Message = $"Formula in Record {dynamicCode.Id} is missing.",
                                CreatedAt = DateTime.UtcNow
                            });
                            continue;
                        }

                        var calc = new BaseCalc(dynamicCode.Desc1);
                        if (!calc.IsFormulaCorrect())
                        {
                            _logsController.AddEntry(new LogEntry
                            {
                                Title = $"{processWorker.Name}, {processWorker.Id}",
                                Type = LogEntryType.Warning,
                                LogType = LogType.Process,
                                Message = $"Formula {calc.Expression} in Record {dynamicCode.Id} is not correct",
                                CreatedAt = DateTime.UtcNow
                            });
                            continue;
                        }

                        try
                        {
                            records.Add(calc.CalculateT1(records));
                        }
                        catch (Exception e)
                        {
                            _logsController.AddEntry(new LogEntry
                            {
                                Title = $"{processWorker.Name}, {processWorker.Id}",
                                Type = LogEntryType.Warning,
                                LogType = LogType.Process,
                                Message =
                                    $"Formula {calc.Expression} in Record {dynamicCode.Id} error: {e.Message}",
                                CreatedAt = DateTime.UtcNow
                            });
                        }
                    }
                    catch (Exception e)
                    {
                        _logsController.AddEntry(new LogEntry
                        {
                            Title = $"{processWorker.Name}, {processWorker.Id}",
                            Type = LogEntryType.Warning,
                            LogType = LogType.Process,
                            Message = $"Calculation error {dynamicCode.Id}: {e.Message} ",
                            CreatedAt = DateTime.UtcNow
                        });
                    }
                }
            }

            newRecords.AddRange(records.Select(x => new Record
                {
                    Id = Guid.NewGuid(),
                    Code = x.Code + month.ToString("D2"),
                    CreatedAt = DateTime.UtcNow,
                    ModifiedAt = DateTime.UtcNow,
                    Value1 = x.Value32
                }
            ));
        }

        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();
    }
}