using DiunaBIWebAPI.dataImporters;
using Google.Apis.Sheets.v4;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using WebAPI.dataProcessors;
using WebAPI.Exports;
using WebAPI.Models;

namespace WebAPI.Controllers
{
    [ApiController]
    [Route("api/[controller]")]

    public class LayersController : Controller
    {
        private readonly AppDbContext db;
        private SpreadsheetsResource.ValuesResource? googleSheetValues;
        private GoogleDriveHelper googleDriveHelper;
        private GoogleSheetsHelper googleSheetsHelper;
        private readonly IConfiguration configuration;
        private readonly LogsController logsController;
        public LayersController(
            AppDbContext _db,
            GoogleSheetsHelper _googleSheetsHelper,
            GoogleDriveHelper _googleDriveHelper,
            IConfiguration _configuration)
        {
            db = _db;
            if (_googleSheetsHelper.Service is not null) {
                googleSheetValues = _googleSheetsHelper.Service.Spreadsheets.Values;
            }
            googleSheetsHelper = _googleSheetsHelper;
            googleDriveHelper = _googleDriveHelper;
            configuration = _configuration;
            logsController = new LogsController(googleSheetsHelper, googleDriveHelper, configuration);
        }

        [HttpGet]
        public IActionResult GetAll(int start, int limit, string? name, LayerType? type)
        {
            try
            {
                IQueryable<Layer> response = db.Layers.Where(x => !x.IsDeleted);
                if (name != null)
                {
                    response = response.Where(x => x.Name!=null && x.Name.Contains(name));
                }
                if (type != null)
                {
                    response = response.Where(x => x.Type == type);
                }

                return Ok(response
                    .OrderByDescending(x => x.Number)
                    .Skip(start).Take(limit).ToList());

            }
            catch (Exception e)
            {
                return BadRequest(e.ToString());
            }
        }
        [HttpPost]
        public IActionResult Save(Layer input)
        {
            try
            {
                //Request.Headers.TryGetValue("userId", out var value);
                //Guid currentUserId = new Guid(value!);


                return Ok();
            }
            catch (Exception e)
            {
                return BadRequest(e.ToString());
            }
        }
        [HttpGet]
        [Route("{id}")]        public IActionResult Get(Guid id)
        {
            try
            {
                return Ok(db.Layers
                    .Include(x => x.CreatedBy)
                    .Include(x => x.Records)
                    .Where(x => x.Id == id && !x.IsDeleted).First());
            }
            catch (Exception e)
            {
                return BadRequest(e.ToString());
            }
        }
        [HttpGet]
        [Route("getByNumber/{apiKey}/{number}")]
        public IActionResult GetByNumber(string apiKey, int number)
        {
            if (apiKey != configuration["apiKey"])
            {
                return Unauthorized();
            }
            try
            {
                return Ok(db.Layers
                    .Include(x => x.CreatedBy)
                    .Include(x => x.Records)
                    .Where(x => x.Number == number && !x.IsDeleted).First());
            }
            catch (Exception e)
            {
                return BadRequest(e.ToString());
            }
        }
        [HttpGet]
        [Route("exportToGoogleSheet/{id}")]
        public IActionResult ExportToGoogleSheet(Guid id)
        {
            if (googleSheetValues is null) {
                throw new Exception("Google Sheets API not initialized");
            }
            Layer layer = db.Layers
                    .Include(x => x.Records!.OrderByDescending(x => x.Code))
                    .Where(x => x.Id == id && !x.IsDeleted).First();

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

        [HttpGet]
        [Route("AutoImport/{apiKey}")]
        [AllowAnonymous]
        public IActionResult AutoImport(string apiKey)
        {
            if (Request.Host.Value != configuration["apiLocalUrl"] || apiKey != configuration["apiKey"])
            {
                return Unauthorized();
            }
            if (googleSheetValues is null) {
                throw new Exception("Google Sheets API not initialized");
            }
            try
            {
                List<Layer> importWorkerLayers;
                importWorkerLayers = db.Layers
                    .Include(x => x.Records)
                    .Where(x =>
                        x.Records!.Any(x => x.Code == "Type" && x.Desc1 == "ImportWorker") &&
                        x.Records!.Any(x => x.Code == "IsEnabled" && x.Desc1 == "True") 
                        )
                    .OrderBy(x => x.CreatedAt)
                    .ToList();

                if (importWorkerLayers.Count() == 0)
                {
                    logsController.AddEntry(new LogEntry
                    {
                        Title = "No Layers to import.",
                        Type = LogEntryType.info,
                        LogType = LogType.import,
                        CreatedAt = DateTime.UtcNow,
                    });
                    return Ok();
                }

                foreach (Layer importWorker in importWorkerLayers)
                {
                    try
                    {
                        string? startDate = importWorker.Records!.FirstOrDefault(x => x.Code == "StartDate")?.Desc1;
                        if (startDate == null)
                        {
                            throw new Exception("Year record nod found");
                        }
                        string? endDate = importWorker.Records!.Where(x => x.Code == "EndDate").First().Desc1;
                        if (endDate == null)
                        {
                            throw new Exception("Year record nod found");
                        }
                        var startDateParsed = DateTime.ParseExact(startDate!, "yyyy.MM.dd", null);
                        var endDateParsed = DateTime.ParseExact(endDate!, "yyyy.MM.dd", null);
                        if (startDateParsed.Date <= DateTime.UtcNow.Date && endDateParsed.Date >= DateTime.UtcNow.Date)
                        {
                            MorskaImporter importer = new MorskaImporter(db, googleSheetValues, this);
                            importer.import(importWorker);

                            logsController.AddEntry(new LogEntry
                            {
                                Title = $"{importWorker!.Name}, {importWorker.Id}",
                                Type = LogEntryType.info,
                                LogType = LogType.import,
                                Message = "Success",
                                CreatedAt = DateTime.UtcNow
                            });
                        }
                        else
                        {
                            logsController.AddEntry(new LogEntry
                            {
                                Title = $"{importWorker!.Name}, {importWorker.Id}",
                                Type = LogEntryType.warning,
                                LogType = LogType.import,
                                Message = "importLayer is out of date. Should be disabled. Not processed.",
                                CreatedAt = DateTime.UtcNow
                            });
                        }
                    } catch(Exception e)
                    {
                        logsController.AddEntry(new LogEntry
                        {
                            Title = $"{importWorker!.Name}, {importWorker.Id}",
                            Type = LogEntryType.error,
                            LogType = LogType.import,
                            Message = e.ToString(),
                            CreatedAt = DateTime.UtcNow
                        });
                    }
                }
                return Ok();
            } catch(Exception e)
            {
                logsController.AddEntry(new LogEntry
                {
                    Title = "Process error",
                    Type = LogEntryType.error,
                    LogType = LogType.import,
                    Message = e.ToString(),
                    CreatedAt = DateTime.UtcNow
                });
                return BadRequest(e.ToString());
            }
        }
        [HttpGet]
        [Route("AutoProcess/{apiKey}/{type}")]
        [AllowAnonymous]
        public IActionResult AutoProcess(string apiKey, string type)
        {
            if (Request.Host.Value != configuration["apiLocalUrl"] || apiKey != configuration["apiKey"])
            {
                return Unauthorized();
            }
            if (googleSheetValues is null) {
                throw new Exception("Google Sheets API not initialized");
            }

            try
            {
                List<Layer> processWorkerLayers = db.Layers
                    .Include(x => x.Records)
                    .Where(x =>
                        x.Records!.Any(x => x.Code == "Type" && x.Desc1 == "ProcessWorker") &&
                        x.Records!.Any(x => x.Code == "IsEnabled" && x.Desc1 == "True") &&
                        x.Records!.Any(x => x.Code == "ProcessType" && x.Desc1 == type)
                        )
                    .OrderBy(x => x.CreatedAt)
                    .ToList();

                if (processWorkerLayers.Count() == 0)
                {
                    logsController.AddEntry(new LogEntry
                    {
                        Title = "No Layers to process.",
                        Type = LogEntryType.info,
                        LogType = LogType.process,
                        CreatedAt = DateTime.UtcNow,
                    });
                    return Ok();
                }

                foreach (Layer processWorker in processWorkerLayers)
                {
                    try
                    {
                        string? name = processWorker.Name;
                        string? year = processWorker?.Records?.SingleOrDefault(x => x.Code == "Year")?.Desc1;
                        if (year == null)
                        {
                            throw new Exception("Year record nod found");
                        }

                        if (int.Parse(year!) < DateTime.UtcNow.Year)
                        {
                            logsController.AddEntry(new LogEntry
                            {
                                Title = $"{processWorker!.Name}, {processWorker.Id}",
                                Type = LogEntryType.warning,
                                LogType = LogType.process,
                                Message = "processLayer is out of date. Should be disabled. Not processed.",
                                CreatedAt = DateTime.UtcNow
                            });
                            continue;
                        }

                        string? processType = processWorker?.Records?.SingleOrDefault(x => x.Code == "ProcessType")?.Desc1;
                        if (processType == null)
                        {
                            throw new Exception("ProcessType record not found");
                        }
                        if (processType == "T3-SourceYearSummary")
                        {
                            if (int.Parse(year!) < DateTime.UtcNow.Year)
                            {
                                logsController.AddEntry(new LogEntry
                                {
                                    Title = $"{processWorker!.Name}, {processWorker.Id}",
                                    Type = LogEntryType.warning,
                                    LogType = LogType.process,
                                    Message = "processLayer is out of date. Should be disabled. Not processed",
                                    CreatedAt = DateTime.UtcNow
                                });
                                continue;
                            }
                            T3SourceYearSummaryProcessor processor = new T3SourceYearSummaryProcessor(db, googleSheetValues, this);
                            processor.process(processWorker!);

                            logsController.AddEntry(new LogEntry
                            {
                                Title = $"{processWorker!.Name}, {processWorker.Id}",
                                Type = LogEntryType.info,
                                LogType = LogType.process,
                                Message = "Success",
                                CreatedAt = DateTime.UtcNow
                            });
                            continue;
                        }
                        if (processType == "T3-MultiSourceYearSummary")
                        {
                            if (int.Parse(year!) < DateTime.UtcNow.Year)
                            {
                                logsController.AddEntry(new LogEntry
                                {
                                    Title = $"{processWorker!.Name}, {processWorker.Id}",
                                    Type = LogEntryType.warning,
                                    LogType = LogType.process,
                                    Message = "processLayer is out of date. Should be disabled. Not processed",
                                    CreatedAt = DateTime.UtcNow
                                });
                                continue;
                            }
                            T3MultiSourceYearSummaryProcessor processor = new T3MultiSourceYearSummaryProcessor(db, googleSheetValues, this);
                            processor.process(processWorker!);

                            logsController.AddEntry(new LogEntry
                            {
                                Title = $"{processWorker!.Name}, {processWorker.Id}",
                                Type = LogEntryType.info,
                                LogType = LogType.process,
                                Message = "Success",
                                CreatedAt = DateTime.UtcNow
                            });
                            continue;
                        }
                        string? month = processWorker?.Records?.SingleOrDefault(x => x.Code == "Month")?.Desc1;
                        if (month == null)
                        {
                            throw new Exception("Month record not found");
                        }
                        if (int.Parse(month!) < DateTime.UtcNow.Month)
                        {
                            logsController.AddEntry(new LogEntry
                            {
                                Title = $"{processWorker!.Name}, {processWorker.Id}",
                                Type = LogEntryType.warning,
                                LogType = LogType.process,
                                Message = "processLayer is out of date. Should be disabled.",
                                CreatedAt = DateTime.UtcNow
                            });
                        }
                        switch (processType!)
                        {
                            case "T3-SingleSource":
                                {
                                    T3SingleSourceProcessor processor = new T3SingleSourceProcessor(db, googleSheetValues, this);
                                    processor.process(processWorker!);
                                    break;
                                }
                            case "T3-MultiSourceSummary":
                                {
                                    T3MultiSourceSummaryProcessor processor = new T3MultiSourceSummaryProcessor(db, googleSheetValues, this);
                                    processor.process(processWorker!);
                                    break;
                                }
                            case "T3-MultiSourceCopySelectedCodes":
                                {
                                    T3MultiSourceCopySelectedCodesProcessor processor = new T3MultiSourceCopySelectedCodesProcessor(db, googleSheetValues, this);
                                    processor.process(processWorker!);
                                    processor.updateReport();
                                    break;
                                }
                        }
                        logsController.AddEntry(new LogEntry
                        {
                            Title = $"{processWorker!.Name}, {processWorker.Id}",
                            Type = LogEntryType.info,
                            LogType = LogType.process,
                            Message = "Success",
                            CreatedAt = DateTime.UtcNow
                        });
                    } catch (Exception e)
                    {
                        logsController.AddEntry(new LogEntry
                        {
                            Title = $"{processWorker!.Name}, {processWorker.Id}",
                            Type = LogEntryType.error,
                            LogType = LogType.process,
                            Message = e.ToString(),
                            CreatedAt = DateTime.UtcNow
                        });
                    }              
                }
                return Ok();
            }
            catch (Exception e)
            {
                logsController.AddEntry(new LogEntry
                {
                    Title = "Process error",
                    Type = LogEntryType.error,
                    LogType = LogType.process,
                    Message = e.ToString(),
                    CreatedAt = DateTime.UtcNow
                });
                return BadRequest(e.ToString());
            }
        }
        internal void SaveRecords(Guid id, ICollection<Record> records, Guid currentUserId)
        {
            try
            {
                List<Record> toDelete = db.Records.Where(x => x.LayerId == id).ToList();
                if (toDelete.Count > 0)
                {
                    db.Records.RemoveRange(toDelete);
                }
                foreach (Record record in records)
                {
                    record.CreatedById = currentUserId;
                    record.CreatedAt = DateTime.UtcNow;
                    record.ModifiedById = currentUserId;
                    record.ModifiedAt = DateTime.UtcNow;
                    record.LayerId = id;
                    db.Records.Add(record);
                }
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}