using System;
using System.Globalization;
using Google.Apis.Sheets.v4;
using WebAPI;
using WebAPI.Controllers;
using WebAPI.Models;

namespace DiunaBIWebAPI.dataImporters
{
	public class MorskaImporter
	{
        private readonly AppDbContext db;
        private readonly SpreadsheetsResource.ValuesResource googleSheetValues;
        private readonly LayersController controller;

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

		public void import(Layer importWorker)
		{
            string? sheetId = importWorker.Records!.Where(x => x.Code == "SheetId").FirstOrDefault()?.Desc1;
            if (sheetId == null)
            {
                throw new Exception($"SheetId not found, {importWorker.Name}");
            }
            string? sheetTabName = importWorker.Records!.Where(x => x.Code == "SheetTabName").FirstOrDefault()?.Desc1;
            if (sheetTabName == null)
            {
                throw new Exception($"SheetTabName not found, {importWorker.Name}");
            }
            string? importYearCell = importWorker.Records!.Where(x => x.Code == "ImportYear").FirstOrDefault()?.Desc1;
            if (importYearCell == null)
            {
                throw new Exception($"ImportYear not found, {importWorker.Name}");
            }
            string? importMonthCell = importWorker.Records!.Where(x => x.Code == "ImportMonth").FirstOrDefault()?.Desc1;
            if (importMonthCell == null)
            {
                throw new Exception($"ImportMonth not found, {importWorker.Name}");
            }
            string? importNameCell = importWorker.Records!.Where(x => x.Code == "ImportName").FirstOrDefault()?.Desc1;
            if (importNameCell == null)
            {
                throw new Exception($"ImportName not found, {importWorker.Name}");
            }
            string? checkSumCell = importWorker.Records!.Where(x => x.Code == "SheetId").FirstOrDefault()?.Desc1;
            if (checkSumCell == null)
            {
                throw new Exception($"SheetId not found, {importWorker.Name}");
            }
            string? dataRange = importWorker.Records!.Where(x => x.Code == "DataRange").FirstOrDefault()?.Desc1;
            if (dataRange == null)
            {
                throw new Exception($"DataRange not found, {importWorker.Name}");
            }

            var nameResponse = googleSheetValues.Get(sheetId, $"{sheetTabName}!{importNameCell}:{importNameCell}").Execute();
            string? name = nameResponse.Values?[0][0].ToString();
            if (name == null)
            {
                throw new Exception($"ImportName cell is empty, {importWorker.Name}");
            }
            var yearResponse = googleSheetValues.Get(sheetId, $"{sheetTabName}!{importYearCell}:{importYearCell}").Execute();
            string? year = yearResponse.Values[0][0].ToString();
            if (year == null)
            {
                throw new Exception($"ImportYear cell is empty, {importWorker.Name}");
            }
            var monthResponse = googleSheetValues.Get(sheetId, $"{sheetTabName}!{importMonthCell}:{importMonthCell}").Execute();
            string? month = monthResponse.Values[0][0].ToString();
            if (month == null)
            {
                throw new Exception($"ImportMonth cell is empty, {importWorker.Name}");
            }
            Layer layer = new Layer
            {
                Source = "GoogleSheet",
                Number = db.Layers.Count() + 1,
                ParentId = importWorker.Id,
                Type = LayerType.import,
                CreatedById = Guid.Parse("F392209E-123E-4651-A5A4-0B1D6CF9FF9D"),
                ModifiedById = Guid.Parse("F392209E-123E-4651-A5A4-0B1D6CF9FF9D"),
                CreatedAt = DateTime.UtcNow,
                ModifiedAt = DateTime.UtcNow
            };
            layer.Name = $"L{layer.Number}-I-{name}-{year}/{month}-{DateTime.Now.ToString("yyyyMMddHHmm")}";

            List<Record> newRecords = new List<Record>();

            var dataRangeResponse = googleSheetValues.Get(sheetId, $"{sheetTabName}!{dataRange}").Execute();
            var data = dataRangeResponse.Values;
            for (int i = 0; i < data[1].Count; i++)
            {
                double value;
                if (
                    data[0][i].ToString()?.Length > 0 &&
                    double.TryParse(data[1][i].ToString(), CultureInfo.GetCultureInfo("pl-PL"), out value))
                {
                    Record record = new Record
                    {
                        Id = Guid.NewGuid(),
                        Code = data[0][i].ToString(),
                        Value1 = value,
                        CreatedAt = DateTime.UtcNow,
                        ModifiedAt = DateTime.UtcNow
                    };
                    newRecords.Add(record);
                };
            }
            db.Layers.Add(layer);
            controller.SaveRecords(layer.Id, newRecords, Guid.Parse("F392209E-123E-4651-A5A4-0B1D6CF9FF9D"));
            db.SaveChanges();
        }
	}
}