using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace crusherScanner
{
    /// <summary>
    /// File access for ML jobs using CSV parse.
    /// </summary>
    internal class FileAccess
    {

        public static HashSet<Samples> GetOreDefData(HashSet<Samples> samples,string barcode)
        {
            string[] DataDirs = new string[2] { Properties.Settings.Default.OreDefWorkFile, Properties.Settings.Default.OreDefInFile };

            try
            {
                foreach (var DataDir in DataDirs)
                {
                    if (Directory.Exists(DataDir))
                    {
                        // Pattern match is for 'ML003092.csv' or 'ML003092_20220822.csv'
                        var jobFiles = Directory.EnumerateFiles(DataDir, "ML??????*.csv", SearchOption.TopDirectoryOnly);
                        foreach (var jobFile in jobFiles)
                        {
                            bool sampleFound;
                            (samples, sampleFound) = ReadCSV(barcode, jobFile, samples);
                            if (sampleFound)
                            {
                                return samples;
                            }
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("An error occurred." + Environment.NewLine + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            return samples;
        }

        private static (HashSet<Samples>,bool) ReadCSV(string barcode, string CsvFile, HashSet<Samples> samples)
        {
            bool BarcodeFound = false;
            string[] RawSampleData = new string[1] { "" };
            string[] lines = File.ReadAllLines(CsvFile);

            foreach (var line in lines)
            {
                if (line.Contains('\u002C'))
                {
                    RawSampleData = line.Split('\u002C');
                }

                if (RawSampleData.Length == 9)
                {
                    Samples sample = new();
                    if (RawSampleData[0] == barcode)
                    {
                        BarcodeFound = true;
                    }
                    if (RawSampleData[0] != "SAMPLEID")
                    {
                        sample.Sid = RawSampleData[0];
                        sample.Job = RawSampleData[1];
                        if (RawSampleData[2] == "PYRITE")
                        {
                            sample.Pyrite = true;
                        }
                        if (RawSampleData[3] == "PLASTIC")
                        {
                            sample.Plastic = true;
                        }
                        if (RawSampleData[4] == "MANGANESE")
                        {
                            sample.Manganese = true;
                        }
                        if (RawSampleData[5] == "HAMMEROIL")
                        {
                            sample.HammerOil = true;
                        }
                        samples.Add(sample);
                    }
                }
            }
            return (samples,BarcodeFound);
        }
    }
}