using Google.Apis.Auth;
using Google.Apis.Http;
using Google.Apis.Sheets.v4;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Identity.Client.Platforms.Features.DesktopOs.Kerberos;
using Microsoft.IdentityModel.Tokens;
using System.Configuration;
using System.IdentityModel.Tokens.Jwt;
using System.Security.Claims;
using System.Text;
using WebAPI.dataParsers;
using WebAPI.Exports;
using WebAPI.Models;

namespace WebAPI.Controllers
{
    [ApiController]
    [Route("api/[controller]")]
    // [Authorize]
    public class DataSetsController : Controller
    {
        private readonly AppDbContext db;
        private SpreadsheetsResource.ValuesResource googleSheetValues;
        private GoogleDriveHelper googleDriveHelper;
        public DataSetsController(
            AppDbContext _db,
            GoogleSheetsHelper _googleSheetsHelper,
            GoogleDriveHelper _googleDriveHelper) { 
            db = _db;
            googleSheetValues = _googleSheetsHelper.Service.Spreadsheets.Values;
            googleDriveHelper = _googleDriveHelper;
        }

        [HttpGet]
        public IActionResult GetAll()
        {
            try
            {
                return Ok(db.DataSets.Where(x => !x.IsDeleted).ToList());
            }
            catch (Exception e)
            {
                return BadRequest(e.ToString());
            }
        }
        [HttpPost]
        public IActionResult Save(DataSet input)
        {
            try
            {
                Request.Headers.TryGetValue("userId", out var value);
                Guid currentUserId = new Guid(value);  
                return Ok(AddDataSet(input, currentUserId).Id);
            } catch(Exception e)
            {
                return BadRequest(e.ToString());
            }
        }
        [HttpGet]
        [Route("{id}")]
        public IActionResult Get(Guid id)
        {
            try
            {
                return Ok(db.DataSets
                    .Include(x => x.CreatedBy)
                    .Include(x => x.DataRows)
                    .Where(x => x.Id == id && !x.IsDeleted).First());
            }
            catch (Exception e)
            {
                return BadRequest(e.ToString());
            }
        }
        [HttpGet]
        [Route("parseGoogleSheet/{sheetId}")]
        public IActionResult ParseGoogleSheet(string sheetId)
        {

            var parser = new googleSheetParser(googleSheetValues);
            return Ok(parser.parse(sheetId));
        }
        [HttpPost]
        [DisableRequestSizeLimit]
        [Route("parseFile")]
        public IActionResult ParseFile()
        {
            var parser = new csvParser();
            return Ok(parser.parse(Request.Form.Files[0]));
        }
        [HttpGet]
        [Route("exportToGoogleSheet/{id}")]
        public IActionResult ExportToGoogleSheet(Guid id)
        {
            DataSet dataSet = db.DataSets
                    .Include(x => x.DataRows)
                    .Where(x => x.Id == id && !x.IsDeleted).First();

            var export = new googleSheetExport(googleDriveHelper, googleSheetValues);
            export.export(dataSet);
            return Ok(true);
        }

        //
        private DataSet AddDataSet(DataSet input, Guid currentUserId)
        {
            input.Number = db.DataSets.Count() + 1;
            input.CreatedById = currentUserId;
            input.ModifiedById = currentUserId;
            input.CreatedAt = DateTime.UtcNow;
            input.ModifiedAt = DateTime.UtcNow;

            db.DataSets.Add(input);
            SaveDataRows(input.Id, input.DataRows, currentUserId);
            db.SaveChanges();
            return input;
        }

        private void SaveDataRows(Guid id, ICollection<Models.DataRow> dataRows, Guid currentUserId)
        {
            try
            {
                List<Guid> ids = new List<Guid>();
                foreach (Models.DataRow dataRow in dataRows)
                {
                    dataRow.CreatedById = currentUserId;
                    dataRow.CreatedAt = DateTime.UtcNow;
                    dataRow.ModifiedById = currentUserId;
                    dataRow.ModifiedAt = DateTime.UtcNow;
                    dataRow.DataSetId= id;

                    db.DataRows.Add(dataRow);
                }
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}