using System.Globalization;
using Google.Apis.Sheets.v4;
using Google.Apis.Sheets.v4.Data;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using WebAPI.Models;

namespace WebAPI.Controllers
{
    public class LogsController : Controller
    {
        private SpreadsheetsResource.ValuesResource? googleSheetValues;
        private GoogleDriveHelper googleDriveHelper;
        private readonly IConfiguration configuration;
        public LogsController(
            GoogleSheetsHelper _googleSheetsHelper,
            GoogleDriveHelper _googleDriveHelper,
            IConfiguration _configuration)
        {
            if (_googleSheetsHelper.Service is not null) { 
                googleSheetValues = _googleSheetsHelper.Service.Spreadsheets.Values;
            }
            googleDriveHelper = _googleDriveHelper;
            configuration = _configuration;
        }

        public void AddEntry(LogEntry entry)
        {
            if (googleSheetValues is null) {
                throw new Exception("Google Sheets API not initialized");
            }
            String type;
            switch (entry.LogType) {
                case LogType.import:
                    type = "Import";
                    break;
                case LogType.backup:
                    type = "Backup";
                    break;
                case LogType.process:
                    type = "Process";
                    break;
                default:
                    type = "Other"; // should never happen
                    break;
            }
            var response = googleSheetValues.Get(configuration["appLogsFile"], $"{type}!A:A").Execute();
            var data = response.Values;
            int row = 1;
            if (data != null) {
                row = data.Count + 1;
            }
            var range = $"{type}!A{row}:D{row}";

            List<object> logRow = new List<object>
            {
                entry.CreatedAt.ToString(new CultureInfo("pl-PL")),
                entry.Type.ToString(),
                entry.Title!,
                entry.Message!
            };

            ValueRange valueRange = new ValueRange() { Values = new IList<object>[] { logRow }};

            var updateRequest = googleSheetValues.Update(valueRange, configuration["appLogsFile"], range);
            updateRequest.ValueInputOption = SpreadsheetsResource.ValuesResource.UpdateRequest.ValueInputOptionEnum.RAW;
            updateRequest.Execute();
        }
    }
}