using Microsoft.Extensions.Configuration;
using System;
using System.Globalization;
using System.IO;

namespace OI.Metrology.Archive.Services;

using OI.Metrology.Shared.DataModels;
using OI.Metrology.Shared.Repositories;
using OI.Metrology.Shared.Services;
using System.Data.SqlClient;

public class AttachmentsService : IAttachmentsService
{
    private IConfiguration Config { get; }

    protected IMetrologyRepo _Repo;

    public AttachmentsService(IConfiguration config, IMetrologyRepo repo)
    {
        Config = config;
        _Repo = repo;
    }
    protected Stream GetAttachmentStream(String tableName, Guid attachmentId, string filename)
    {
        string attachmentsRootPath = Config[Constants.AttachmentPathKey];

        if (attachmentId.Equals(Guid.Empty))
            throw new Exception("No attachments found");

        DateTime insertDate = Convert.ToDateTime(_Repo.GetAttachmentInsertDateByGUID(tableName, attachmentId));
        int year = insertDate.Year;
        DateTime d = insertDate;
        CultureInfo cul = CultureInfo.CurrentCulture;
        int weekNum = cul.Calendar.GetWeekOfYear(d, CalendarWeekRule.FirstDay, DayOfWeek.Sunday);
        string workWeek = "WW" + weekNum.ToString("00");
        string dateDir = year + @"\" + workWeek;

        string fullPath = Path.Combine(attachmentsRootPath, tableName + "_", dateDir, attachmentId.ToString(), filename);

        //Check to see if file exists in the "New" directory structure, if not change the path back to the old. and check there
        if (!File.Exists(fullPath))
        {
            fullPath = Path.Combine(attachmentsRootPath, tableName, attachmentId.ToString(), filename);
        }

        if (!File.Exists(fullPath))
            throw new Exception("File not found");

        return new FileStream(fullPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
    }
    //protected System.IO.Stream GetAttachmentStream(String tableName, Guid attachmentId, string filename)
    //{

    //    //This part seems to be key
    //    var attachmentsRootPath = _config[Constants.AttachmentPathKey];

    //    //if (attachmentId.Equals(Guid.Empty))
    //        //throw new Exception("No attachments found");
    //    //string list = Directory.GetDirectories(attachmentsRootPath).Where(s => s.Contains(attachmentId.ToString())).SingleOrDefault();

    //    //var fullPath = list;
    //    var fullPath = System.IO.Path.Combine(attachmentsRootPath, tableName, attachmentId.ToString(), filename);

    //    if (!System.IO.File.Exists(fullPath))
    //        throw new Exception("File not found " + fullPath);

    //    return new System.IO.FileStream(fullPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
    //}
    protected Stream GetAttachmentStreamArchive(String tableName, Guid attachmentId, string filename)
    {

        //This part seems to be key
        string attachmentsRootPath = Config[Constants.AttachmentPathKey];

        if (attachmentId.Equals(Guid.Empty))
            throw new Exception("No attachments found");

        string fullPath = Path.Combine(attachmentsRootPath, tableName, "2019\\09", attachmentId.ToString(), filename);

        if (!File.Exists(fullPath))
            throw new Exception("File not found");

        return new FileStream(fullPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
    }
    public Stream GetAttachmentStreamByTitle(ToolType toolType, bool header, string title, string filename)
    {
        if (toolType == null)
            throw new Exception("Invalid tool type");

        string queryString = "SELECT * FROM " + toolType.DataTableName + " WHERE AttachmentId = @attachmentId";
        if (header)
        {
            queryString = "SELECT * FROM " + toolType.HeaderTableName + " WHERE AttachmentId = '" + title + "'";
        }
        DateTime SearchDate = new();
        string connectionString = @"Server=messv01ec.ec.local\PROD1,53959;Database=Metrology_Archive;Integrated Security=True";
        using (SqlConnection connection = new(connectionString))
        {
            SqlCommand command = new(queryString, connection);
            //command.Parameters.AddWithValue("@attachmentId", attachmentId);
            connection.Open();
            SqlDataReader reader = command.ExecuteReader();
            try
            {
                while (reader.Read())
                {
                    Console.WriteLine(string.Format("{0}", reader["InsertDate"]));// etc
                    string test = string.Format("{0}", reader["InsertDate"]);
                    SearchDate = Convert.ToDateTime(string.Format("{0}", reader["InsertDate"]));
                }
            }
            finally
            {
                // Always call Close when done reading.
                reader.Close();
            }
        }
        string SearchMonth = SearchDate.Month.ToString();
        if (SearchDate.Month < 10)
        {
            _ = "0" + SearchMonth;
        }

        _ = SearchDate.Year.ToString();

        _ = Config[Constants.AttachmentPathKey];

        string tableName;

        //var attachmentsRootPath = "\\\\messv02ecc1.ec.local\\EC_Metrology_Si\\MetrologyAttachments\\TencorRunData\\2019\\09";
        Guid attachmentId;
        if (header)
        {
            tableName = toolType.HeaderTableName;
            attachmentId = _Repo.GetHeaderAttachmentIDByTitle(toolType.ID, title);
        }
        else
        {
            tableName = toolType.DataTableName;
            attachmentId = _Repo.GetDataAttachmentIDByTitle(toolType.ID, title);
        }

        return GetAttachmentStream(tableName, attachmentId, filename);
    }

    public Stream GetAttachmentStreamByAttachmentId(ToolType toolType, bool header, Guid attachmentId, string filename)
    {
        if (toolType == null)
            throw new Exception("Invalid tool type");

        /*string queryString = "SELECT * FROM " + toolType.DataTableName + " WHERE AttachmentId = @attachmentId";
if (header)
{
queryString = "SELECT * FROM " + toolType.HeaderTableName + " WHERE AttachmentId = '" + attachmentId + "'";
}
DateTime SearchDate = new DateTime();
string connectionString = @"Server=messv01ec.ec.local\PROD1,53959;Database=Metrology_Archive;Integrated Security=True";
using (SqlConnection connection = new SqlConnection(connectionString))
{
SqlCommand command = new SqlCommand(queryString, connection);
command.Parameters.AddWithValue("@attachmentId", attachmentId);
connection.Open();
SqlDataReader reader = command.ExecuteReader();
try
{
while (reader.Read())
{
Console.WriteLine(string.Format("{0}", reader["InsertDate"]));// etc
//string test = string.Format("{0}", reader["InsertDate"]);
SearchDate = Convert.ToDateTime(string.Format("{0}", reader["Date"]));
}
}
finally
{
// Always call Close when done reading.
reader.Close();
}
}
string SearchMonth = SearchDate.Month.ToString();
if (SearchDate.Month < 10)
{
SearchMonth = "0" + SearchMonth;
}
string SearchYear = SearchDate.Year.ToString();*/
        //string DateSearchTermin = +""+

        _ = Config[Constants.AttachmentPathKey];

        string tableName;

        if (header)
            tableName = toolType.HeaderTableName;
        else
            tableName = toolType.DataTableName;

        //System.IO.Stream test = GetAttachmentStream(tableName, attachmentId, filename, SearchYear);

        return GetAttachmentStream(tableName, attachmentId, filename);
        //return test;
    }
    public Stream GetAttachmentStreamByAttachmentIdArchive(ToolType toolType, bool header, Guid attachmentId, string filename)
    {
        if (toolType == null)
            throw new Exception("Invalid tool type");

        _ = Config[Constants.AttachmentPathKey];

        string tableName;

        if (header)
            tableName = toolType.HeaderTableName;
        else
            tableName = toolType.DataTableName;

        return GetAttachmentStreamArchive(tableName, attachmentId, filename);
    }

    public void SaveAttachment(ToolType toolType, long headerId, string dataUniqueId, string filename, Microsoft.AspNetCore.Http.IFormFile uploadedFile)
    {
        if (toolType == null)
            throw new Exception("Invalid tool type");

        using System.Transactions.TransactionScope trans = _Repo.StartTransaction();
        Guid attachmentId = Guid.Empty;
        string tableName = "";

        if (string.IsNullOrWhiteSpace(dataUniqueId))
        {
            attachmentId = _Repo.GetHeaderAttachmentID(toolType.ID, headerId);
            tableName = toolType.HeaderTableName;
        }
        else
        {
            attachmentId = _Repo.GetDataAttachmentID(toolType.ID, headerId, dataUniqueId);
            tableName = toolType.DataTableName;
        }

        if (Equals(attachmentId, Guid.Empty))
            throw new Exception("Invalid attachment ID");

        string attachmentsRootPath = Config[Constants.AttachmentPathKey];

        string directoryPath = Path.Combine(attachmentsRootPath, tableName, attachmentId.ToString());

        if (!Directory.Exists(directoryPath))
            _ = Directory.CreateDirectory(directoryPath);

        string fullPath = Path.Combine(directoryPath, filename);

        using (FileStream s = new(fullPath, FileMode.Create, FileAccess.ReadWrite, FileShare.None))
        {
            uploadedFile.CopyTo(s);
        }

        trans.Complete();
    }

    public void SaveAttachment(ToolType toolType, long headerId, string dataUniqueId, string filename, object uploadedFile)
    {
        Microsoft.AspNetCore.Http.IFormFile formFile = (Microsoft.AspNetCore.Http.IFormFile)uploadedFile;
        SaveAttachment(toolType, headerId, dataUniqueId, filename, formFile);
    }

}