using Adaptation.Eaf.Management.ConfigurationData.CellAutomation;
using Adaptation.Ifx.Eaf.EquipmentConnector.File.Configuration;
using Adaptation.Shared;
using Adaptation.Shared.Duplicator;
using Adaptation.Shared.Methods;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Globalization;
using System.IO;
using System.IO.Compression;
using System.Linq;
using System.Text.Json;
using System.Text.RegularExpressions;
using System.Threading;

namespace Adaptation.FileHandlers.ZipFilesByDate;

public class FileRead : Shared.FileRead, IFileRead
{

    private readonly Timer _Timer;

    public FileRead(ISMTP smtp, Dictionary<string, string> fileParameter, string cellInstanceName, string cellInstanceConnectionName, FileConnectorConfiguration fileConnectorConfiguration, string equipmentTypeName, string parameterizedModelObjectDefinitionType, IList<ModelObjectParameterDefinition> modelObjectParameters, string equipmentDictionaryName, Dictionary<string, List<long>> dummyRuns, Dictionary<long, List<string>> staticRuns, bool useCyclicalForDescription, bool isEAFHosted) :
        base(new Description(), false, smtp, fileParameter, cellInstanceName, cellInstanceConnectionName, fileConnectorConfiguration, equipmentTypeName, parameterizedModelObjectDefinitionType, modelObjectParameters, equipmentDictionaryName, dummyRuns, staticRuns, useCyclicalForDescription, isEAFHosted)
    {
        _MinFileLength = 10;
        _NullData = string.Empty;
        _Logistics = new(this);
        if (_FileParameter is null)
            throw new Exception(cellInstanceConnectionName);
        if (_ModelObjectParameterDefinitions is null)
            throw new Exception(cellInstanceConnectionName);
        if (!_IsDuplicator)
            throw new Exception(cellInstanceConnectionName);
        if (!Debugger.IsAttached && fileConnectorConfiguration.PreProcessingMode != FileConnectorConfiguration.PreProcessingModeEnum.Process)
            _Timer = new Timer(Callback, null, (int)(fileConnectorConfiguration.FileScanningIntervalInSeconds * 1000), Timeout.Infinite);
        else
        {
            _Timer = new Timer(Callback, null, Timeout.Infinite, Timeout.Infinite);
            Callback(null);
        }
    }

    void IFileRead.Move(Tuple<string, Test[], JsonElement[], List<FileInfo>> extractResults, Exception exception)
    {
        bool isErrorFile = exception is not null;
        if (!isErrorFile && !string.IsNullOrEmpty(_Logistics.ReportFullPath))
        {
            FileInfo fileInfo = new(_Logistics.ReportFullPath);
            if (fileInfo.Exists && fileInfo.LastWriteTime < fileInfo.CreationTime)
                File.SetLastWriteTime(_Logistics.ReportFullPath, fileInfo.CreationTime);
        }
        Move(extractResults);
    }

    void IFileRead.WaitForThread() => WaitForThread(thread: null, threadExceptions: null);

    string IFileRead.GetEventDescription()
    {
        string result = _Description.GetEventDescription();
        return result;
    }

    List<string> IFileRead.GetHeaderNames()
    {
        List<string> results = _Description.GetHeaderNames();
        return results;
    }

    string[] IFileRead.Move(Tuple<string, Test[], JsonElement[], List<FileInfo>> extractResults, string to, string from, string resolvedFileLocation, Exception exception)
    {
        string[] results = Move(extractResults, to, from, resolvedFileLocation, exception);
        return results;
    }

    JsonProperty[] IFileRead.GetDefault()
    {
        JsonProperty[] results = _Description.GetDefault(this, _Logistics);
        return results;
    }

    Dictionary<string, string> IFileRead.GetDisplayNamesJsonElement()
    {
        Dictionary<string, string> results = _Description.GetDisplayNamesJsonElement(this);
        return results;
    }

    List<IDescription> IFileRead.GetDescriptions(IFileRead fileRead, List<Test> tests, IProcessData processData)
    {
        List<IDescription> results = _Description.GetDescriptions(fileRead, _Logistics, tests, processData);
        return results;
    }

    Tuple<string, Test[], JsonElement[], List<FileInfo>> IFileRead.GetExtractResult(string reportFullPath, string eventName)
    {
        Tuple<string, Test[], JsonElement[], List<FileInfo>> results;
        if (string.IsNullOrEmpty(eventName))
            throw new Exception();
        _ReportFullPath = reportFullPath;
        DateTime dateTime = DateTime.Now;
        results = GetExtractResult(reportFullPath, dateTime);
        if (results.Item3 is null)
            results = new Tuple<string, Test[], JsonElement[], List<FileInfo>>(results.Item1, Array.Empty<Test>(), JsonSerializer.Deserialize<JsonElement[]>("[]"), results.Item4);
        if (results.Item3.Length > 0 && _IsEAFHosted)
            WritePDSF(this, results.Item3);
        UpdateLastTicksDuration(DateTime.Now.Ticks - dateTime.Ticks);
        return results;
    }

    Tuple<string, Test[], JsonElement[], List<FileInfo>> IFileRead.ReExtract()
    {
        Tuple<string, Test[], JsonElement[], List<FileInfo>> results;
        List<string> headerNames = _Description.GetHeaderNames();
        Dictionary<string, string> keyValuePairs = _Description.GetDisplayNamesJsonElement(this);
        results = ReExtract(this, headerNames, keyValuePairs);
        return results;
    }

    private Tuple<string, Test[], JsonElement[], List<FileInfo>> GetExtractResult(string reportFullPath, DateTime dateTime)
    {
        if (reportFullPath is null)
        { }
        if (dateTime == DateTime.MinValue)
        { }
        throw new Exception(string.Concat("See ", nameof(Callback)));
    }

    private static bool DeleteEmptyDirectories(string rootDirectory)
    {
        bool result;
        if (!Directory.Exists(rootDirectory))
            result = false;
        else
        {
            string[] files;
            string[] directories = Directory.GetDirectories(rootDirectory, "*", SearchOption.TopDirectoryOnly);
            if (directories.Length > 0)
                files = Array.Empty<string>();
            else
                files = Directory.GetFiles(rootDirectory, "*", SearchOption.AllDirectories);
            if (directories.Length == 0 && files.Length == 0)
            {
                result = true;
                Directory.Delete(rootDirectory);
            }
            else
            {
                result = false;
                foreach (string directory in directories)
                {
                    result = DeleteEmptyDirectories(directory);
                    if (result)
                        result = DeleteEmptyDirectories(directory);
                }
                if (files is null)
                {
                    directories = Directory.GetDirectories(rootDirectory, "*", SearchOption.TopDirectoryOnly);
                    result = directories.Length == 0;
                }
            }
        }
        return result;
    }

    private void ZipFilesByDate(string sourceDirectory, SearchOption searchOption, string dayFormat)
    {
        string key;
        bool addFile;
        string fileName;
        string[] segments;
        string[] subFiles;
        string weekOfYear;
        FileInfo fileInfo;
        DateTime creationTime;
        DateTime lastWriteTime;
        DateTime nowDateTime = DateTime.Now;
        Regex regex = new("[a-zA-Z0-9]{1,}");
        DateTime dateTime = DateTime.MinValue;
        DateTime firstEmail = new(2019, 3, 8);
        CultureInfo cultureInfo = new("en-US");
        Calendar calendar = cultureInfo.Calendar;
        Dictionary<string, DateTime> weeks = new();
        int ticksLength = nowDateTime.AddDays(-6).Ticks.ToString().Length;
        for (int i = 0; i < int.MaxValue; i++)
        {
            dateTime = firstEmail.AddDays(i);
            if (dateTime > nowDateTime)
                break;
            weekOfYear = calendar.GetWeekOfYear(dateTime, CalendarWeekRule.FirstDay, DayOfWeek.Sunday).ToString("00");
            key = string.Concat(dateTime.ToString("yyyy"), "_Week_", weekOfYear);
            if (!weeks.ContainsKey(key))
                weeks.Add(key, dateTime);
        }
        weekOfYear = calendar.GetWeekOfYear(nowDateTime, CalendarWeekRule.FirstDay, DayOfWeek.Sunday).ToString("00");
        string skipKey = string.Concat(nowDateTime.ToString("yyyy"), "_Week_", weekOfYear);
        Dictionary<string, List<string>> keyValuePairs = new();
        string[] topDirectories = Directory.GetDirectories(sourceDirectory, "*", SearchOption.TopDirectoryOnly);
        if (topDirectories.Length == 0)
            topDirectories = new string[] { sourceDirectory };
        foreach (string topDirectory in topDirectories)
        {
            keyValuePairs.Clear();
            subFiles = Directory.GetFiles(topDirectory, "*", searchOption);
            foreach (string subFile in subFiles)
            {
                addFile = false;
                if (subFile.EndsWith(".zip"))
                    continue;
                fileName = Path.GetFileName(subFile);
                fileInfo = new FileInfo(subFile);
                creationTime = fileInfo.CreationTime;
                if (creationTime > dateTime)
                    continue;
                lastWriteTime = fileInfo.LastWriteTime;
                if (fileName.Contains(lastWriteTime.ToString("yyyyMMdd")) || fileName.Contains(lastWriteTime.ToString("yyyy-MM-dd")) ||
                    fileName.Contains(creationTime.ToString("yyyyMMdd")) || fileName.Contains(creationTime.ToString("yyyy-MM-dd")) ||
                    fileName.Contains(lastWriteTime.ToString("yyMMdd")) || fileName.Contains(lastWriteTime.ToString("yy-MM-dd")) ||
                    fileName.Contains(creationTime.ToString("yyMMdd")) || fileName.Contains(creationTime.ToString("yy-MM-dd")) ||
                    fileName.Contains(lastWriteTime.AddDays(-1).ToString("yyyyMMdd")) || fileName.Contains(lastWriteTime.AddDays(-1).ToString("yyyy-MM-dd")) ||
                    fileName.Contains(creationTime.AddDays(-1).ToString("yyyyMMdd")) || fileName.Contains(creationTime.AddDays(-1).ToString("yyyy-MM-dd")) ||
                    fileName.Contains(lastWriteTime.AddDays(-1).ToString("yyMMdd")) || fileName.Contains(lastWriteTime.AddDays(-1).ToString("yy-MM-dd")) ||
                    fileName.Contains(creationTime.AddDays(-1).ToString("yyMMdd")) || fileName.Contains(creationTime.AddDays(-1).ToString("yy-MM-dd")))
                    addFile = true;
                if (!addFile && fileName.Length > ticksLength)
                {
                    MatchCollection matches = regex.Matches(fileName);
                    foreach (Match match in matches.Cast<Match>())
                    {
                        if (match.Value.Length != ticksLength)
                            continue;
                        if (!long.TryParse(match.Value, out long ticks))
                            continue;
                        addFile = true;
                        break;
                    }
                    if (addFile)
                        break;
                }
                if (addFile)
                {
                    weekOfYear = calendar.GetWeekOfYear(lastWriteTime, CalendarWeekRule.FirstDay, DayOfWeek.Sunday).ToString("00");
                    if (string.IsNullOrEmpty(dayFormat))
                        key = string.Concat(lastWriteTime.ToString("yyyy"), "_Week_", weekOfYear);
                    else
                        key = string.Concat(lastWriteTime.ToString("yyyy"), "_Week_", weekOfYear, "_", lastWriteTime.ToString(dayFormat));
                    if (key == skipKey)
                        continue;
                    if (!keyValuePairs.ContainsKey(key))
                        keyValuePairs.Add(key, new List<string>());
                    keyValuePairs[key].Add(subFile);
                }
            }
            foreach (KeyValuePair<string, List<string>> element in keyValuePairs)
            {
                key = Path.Combine(topDirectory, $"{element.Key}.zip");
                if (File.Exists(key))
                {
                    for (short i = 101; i < short.MaxValue; i++)
                    {
                        key = Path.Combine(topDirectory, $"{element.Key}_{i}.zip");
                        if (!File.Exists(key))
                            break;
                    }
                }
                using ZipArchive zip = ZipFile.Open(key, ZipArchiveMode.Create);
                foreach (string file in element.Value)
                {
                    _ = zip.CreateEntryFromFile(file, Path.GetFileName(file));
                    File.Delete(file);
                }
            }
            subFiles = Directory.GetFiles(topDirectory, "*.zip", SearchOption.TopDirectoryOnly);
            foreach (string subFile in subFiles)
            {
                fileName = Path.GetFileNameWithoutExtension(subFile);
                segments = fileName.Split('_');
                if (segments.Length > 2)
                    fileName = string.Concat(segments[0], '_', segments[1], '_', segments[2]);
                if (weeks.ContainsKey(fileName))
                {
                    try
                    { File.SetLastWriteTime(subFile, weeks[fileName]); }
                    catch (Exception) { }
                }
            }
            if (topDirectory != sourceDirectory)
            {
                try
                { _ = DeleteEmptyDirectories(topDirectory); }
                catch (Exception) { }
            }
            _Log.Info(topDirectory);
        }
    }

    private void ZipFilesByDate()
    {
        string checkDirectory;
        string dayFormat = string.Empty;
        string[] equipmentDirectories = Directory.GetDirectories(_FileConnectorConfiguration.SourceFileLocation, "*", SearchOption.TopDirectoryOnly);
        foreach (string equipmentDirectory in equipmentDirectories)
        {
            checkDirectory = Path.Combine(equipmentDirectory, "PollPath");
            if (!Directory.Exists(checkDirectory))
                continue;
            if (_IsEAFHosted)
                ZipFilesByDate(checkDirectory, SearchOption.TopDirectoryOnly, dayFormat);
        }
    }

    private void Callback(object state)
    {
        try
        {
            ZipFilesByDate();
        }
        catch (Exception exception)
        {
            string subject = string.Concat("Exception:", _CellInstanceConnectionName);
            string body = string.Concat(exception.Message, Environment.NewLine, Environment.NewLine, exception.StackTrace);
            try
            { _SMTP.SendHighPriorityEmailMessage(subject, body); }
            catch (Exception) { }
        }
        try
        {
            TimeSpan timeSpan = new(DateTime.Now.AddSeconds(_FileConnectorConfiguration.FileScanningIntervalInSeconds.Value).Ticks - DateTime.Now.Ticks);
            _ = _Timer.Change((long)timeSpan.TotalMilliseconds, Timeout.Infinite);
        }
        catch (Exception exception)
        {
            string subject = string.Concat("Exception:", _CellInstanceConnectionName);
            string body = string.Concat(exception.Message, Environment.NewLine, Environment.NewLine, exception.StackTrace);
            try
            { _SMTP.SendHighPriorityEmailMessage(subject, body); }
            catch (Exception) { }
        }
    }

}