using OI.Metrology.Server.Models;
using OI.Metrology.Shared.DataModels;
using OI.Metrology.Shared.Models.Stateless;
using OI.Metrology.Shared.Repositories;
using System.Globalization;
using System.Text.Json;

namespace OI.Metrology.Server.Repository;

public class WaferCounterRepository : IWaferCounterRepository
{

    private record Record(int Check,
                          int Total,
                          string? SlotMap);

    private readonly string _MockRoot;
    private readonly string _RepositoryName;
    private readonly AppSettings _AppSettings;
    private readonly IHttpClientFactory _HttpClientFactory;
    private readonly IDbConnectionFactory _DBConnectionFactory;
    private readonly string _OpenInsightApplicationProgrammingInterface;

    public WaferCounterRepository(AppSettings appSettings, IDbConnectionFactory dbConnectionFactory, IHttpClientFactory httpClientFactory)
    {
        _AppSettings = appSettings;
        _MockRoot = appSettings.MockRoot;
        _HttpClientFactory = httpClientFactory;
        _DBConnectionFactory = dbConnectionFactory;
        _RepositoryName = nameof(WaferCounterRepository)[..^10];
        _OpenInsightApplicationProgrammingInterface = appSettings.OpenInsightApplicationProgrammingInterface;
    }

    private static void MoveFile(string waferSizeDirectory, FileInfo fileInfo)
    {
        Calendar calendar = new CultureInfo("en-US").Calendar;
        string weekOfYear = $"{fileInfo.LastWriteTime:yyyy}_Week_{calendar.GetWeekOfYear(fileInfo.LastWriteTime, CalendarWeekRule.FirstDay, DayOfWeek.Sunday):00}";
        string checkDirectory = Path.Combine(waferSizeDirectory, "Archive", weekOfYear);
        if (!Directory.Exists(checkDirectory))
            _ = Directory.CreateDirectory(checkDirectory);
        string checkFile = Path.Combine(checkDirectory, fileInfo.Name);
        if (!File.Exists(checkFile))
            File.Move(fileInfo.FullName, checkFile);
    }

    private static Record GetRecord(string line1, string line2)
    {
        Record result;
        string? waferMap = string.IsNullOrEmpty(line2) || line2.Length != 8 ? null : line2.Substring(1, 1);
        int check = waferMap == "1" ? 1 : 0;
        int total = int.Parse(line1[1..]);
        // string wafers = Array.from(line2[2..]);
        foreach (char item in line2[2..])
        {
            switch (item)
            {
                case '0':
                    check += 0;
                    waferMap += "0000";
                    break;
                case '1':
                    check += 1;
                    waferMap += "0001";
                    break;
                case '2':
                    check += 1;
                    waferMap += "0010";
                    break;
                case '3':
                    check += 2;
                    waferMap += "0011";
                    break;
                case '4':
                    check += 1;
                    waferMap += "0100";
                    break;
                case '5':
                    check += 2;
                    waferMap += "0101";
                    break;
                case '6':
                    check += 2;
                    waferMap += "0110";
                    break;
                case '7':
                    check += 3;
                    waferMap += "0111";
                    break;
                case '8':
                    check += 1;
                    waferMap += "1000";
                    break;
                case '9':
                    check += 2;
                    waferMap += "1001";
                    break;
                case 'A':
                    check += 2;
                    waferMap += "1010";
                    break;
                case 'B':
                    check += 3;
                    waferMap += "1011";
                    break;
                case 'C':
                    check += 2;
                    waferMap += "1100";
                    break;
                case 'D':
                    check += 3;
                    waferMap += "1101";
                    break;
                case 'E':
                    check += 3;
                    waferMap += "1110";
                    break;
                case 'F':
                    check += 4;
                    waferMap += "1111";
                    break;
                default:
                    break;
            }
        }
        result = new(check, total, waferMap);
        return result;
    }

    private string GetWaferSizeDirectory(string area, string waferSize, bool destination) =>
        destination ? Path.Combine(_AppSettings.WaferCounterDestinationDirectory, area, waferSize) : Path.Combine(_AppSettings.WaferCounterRootDirectory, area, waferSize);

    string? IWaferCounterRepository.GetSlotMap(string line1, string line2) =>
        GetRecord(line1, line2).SlotMap;

    private static FileInfo[] GetFileInfoCollection(string waferSizeDirectory)
    {
        List<FileInfo> results = new();
        FileInfo[] fileInfoCollection;
        string[] files = !Directory.Exists(waferSizeDirectory) ? Array.Empty<string>() : Directory.GetFiles(waferSizeDirectory, "*.wc", SearchOption.TopDirectoryOnly);
        fileInfoCollection = (from l in files select new FileInfo(l)).OrderByDescending(l => l.LastWriteTime).ToArray();
        if (fileInfoCollection.Length > 0)
            results.Add(fileInfoCollection[0]);

        for (int i = 1; i < fileInfoCollection.Length; i++)
            MoveFile(waferSizeDirectory, fileInfoCollection[i]);
        return fileInfoCollection;
    }

    private static WaferCounter? GetLastQuantityAndSlotMapWithText(string waferSize, string text, FileInfo fileInfo)
    {
        WaferCounter? result;
        string[] lines = File.ReadAllLines(fileInfo.FullName);
        if (lines.Length < 2)
            result = null;
        else
        {
            string[] segments = fileInfo.Name.Split('-');
            Record record = GetRecord(lines[0], lines[1]);
            string equipmentId = segments.Length < 2 ? fileInfo.Name : segments[1].Split('.')[0];
            if (string.IsNullOrEmpty(record.SlotMap) || record.SlotMap.Length != 25)
                result = null; // Wrong length!
            else if (record.Total != record.Check)
                result = null; // Invalid!
            else
                result = new(fileInfo.LastWriteTime, fileInfo.LastWriteTime.ToString("yyyy-MM-dd hh:mm tt"), $"WC{waferSize}{equipmentId}", text, record.Total, record.SlotMap);
        }
        return result;
    }

    WaferCounter? IWaferCounterRepository.GetLastQuantityAndSlotMap(string area, string waferSize)
    {
        WaferCounter? result;
        if (!string.IsNullOrEmpty(_MockRoot))
        {
            string json = File.ReadAllText(Path.Combine(string.Concat(AppContext.BaseDirectory, _MockRoot), $"{_RepositoryName}-{nameof(IWaferCounterRepository.GetLastQuantityAndSlotMap)}.json"));
            result = JsonSerializer.Deserialize<WaferCounter>(json);
            if (result is null)
                throw new NullReferenceException(nameof(result));
        }
        else
        {
            string waferSizeDirectory = GetWaferSizeDirectory(area, waferSize, destination: false);
            FileInfo[] fileInfoCollection = GetFileInfoCollection(waferSizeDirectory);
            if (fileInfoCollection.Length == 0)
                result = null;
            else
            {
                string text = string.Empty;
                result = GetLastQuantityAndSlotMapWithText(waferSize, text, fileInfoCollection[0]);
            }
        }
        return result;
    }

    private static void Save(string waferSizeDestinationDirectory, string area, string waferSize, string text, FileInfo fileInfo, WaferCounter result) =>
        File.WriteAllText(Path.Combine(waferSizeDestinationDirectory, $"{fileInfo.Name}.csv"), $"100,{waferSize},{area},{fileInfo.LastWriteTime},{text},{result.Total:00},{result.SlotMap} ");

    WaferCounter? IWaferCounterRepository.GetLastQuantityAndSlotMapWithText(string area, string waferSize, string text)
    {
        WaferCounter? result;
        if (!string.IsNullOrEmpty(_MockRoot))
        {
            string json = File.ReadAllText(Path.Combine(string.Concat(AppContext.BaseDirectory, _MockRoot), $"{_RepositoryName}-{nameof(IWaferCounterRepository.GetLastQuantityAndSlotMapWithText)}.json"));
            result = JsonSerializer.Deserialize<WaferCounter>(json);
            if (result is null)
                throw new NullReferenceException(nameof(result));
        }
        else
        {
            string waferSizeDirectory = GetWaferSizeDirectory(area, waferSize, destination: false);
            FileInfo[] fileInfoCollection = GetFileInfoCollection(waferSizeDirectory);
            if (fileInfoCollection.Length == 0)
                result = null;
            else
            {
                result = GetLastQuantityAndSlotMapWithText(waferSize, text, fileInfoCollection[0]);
                if (result is not null)
                {
                    string waferSizeDestinationDirectory = _AppSettings.WaferCounterDestinationDirectory;
                    // string waferSizeDestinationDirectory = GetWaferSizeDirectory(area, waferSize, destination: true);
                    Save(waferSizeDestinationDirectory, area, waferSize, text, fileInfoCollection[0], result);
                }
            }
        }
        return result;
    }

}