using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;

namespace Adaptation.FileHandlers.Stratus;

#nullable enable

public class Wafer
{

    public Wafer(string destination, string mean, string passFail, string recipe, string reference, List<string> sites, string slot, string source, string stdDev, string waferText)
    {
        Destination = destination;
        Mean = mean;
        PassFail = passFail;
        Recipe = recipe;
        Reference = reference;
        Sites = sites;
        Slot = slot;
        Source = source;
        StdDev = stdDev;
        Text = waferText;
    }

    public string Destination { get; }
    public string Mean { get; }
    public string PassFail { get; }
    public string Recipe { get; }
    public string Reference { get; }
    public List<string> Sites { get; }
    public string Slot { get; }
    public string Source { get; }
    public string StdDev { get; }
    public string Text { get; }

    internal static string GetToken(string text, int[] i)
    {
        while (true)
        {
            if (i[0] >= text.Length || !IsNullOrWhiteSpace(text.Substring(i[0], 1)))
                break;
            i[0]++;
        }
        int num = i[0];
        while (true)
        {
            if (num >= text.Length || IsNullOrWhiteSpace(text.Substring(num, 1)))
                break;
            num++;
        }
        string str = text.Substring(i[0], num - i[0]);
        i[0] = num;
        return str.Trim();
    }

    internal static bool IsNullOrWhiteSpace(string search)
    {
        bool flag;
        int num = 0;
        while (true)
        {
            if (num >= search.Length)
            {
                flag = true;
                break;
            }
            else if (char.IsWhiteSpace(search[num]))
                num++;
            else
            {
                flag = false;
                break;
            }
        }
        return flag;
    }

    internal static string PeekNextLine(string text, int[] i)
    {
        int num = i[0];
        string toEOL = Header.GetToEOL(text, i);
        i[0] = num;
        return toEOL;
    }

    internal static ReadOnlyCollection<string> GetGroups(string text, Constant constant, int[] i)
    {
        List<string> results = new();
        string[] lines = text.Substring(i[0]).Split(new string[] { Environment.NewLine }, StringSplitOptions.None);
        if (lines.Length > 0)
        {
            List<string> group = new();
            foreach (string line in lines)
            {
                group.Add(line);
                if (!line.StartsWith(constant.Destination))
                    continue;
                results.Add(string.Join(Environment.NewLine, group));
                group.Clear();
            }
            results.Add(string.Join(Environment.NewLine, group));
        }
        return results.AsReadOnly();
    }

    internal static ReadOnlyCollection<Wafer> Get(Constant constant, ReadOnlyCollection<string> groups)
    {
        List<Wafer> results = new();
        string mean;
        string slot;
        Wafer wafer;
        string recipe;
        string source;
        string stdDev;
        string nextLine;
        string passFail;
        string reference;
        string thickness;
        string waferText;
        string destination;
        List<string> sites;
        int[] j = new int[] { 0 };
        foreach (string groupText in groups)
        {
            j[0] = 0;
            sites = new();
            if (groupText.Contains(constant.ProcessFailed))
            {
                mean = string.Empty;
                slot = string.Empty;
                recipe = string.Empty;
                source = string.Empty;
                stdDev = string.Empty;
                passFail = string.Empty;
                reference = string.Empty;
                waferText = string.Empty;
                destination = string.Empty;
            }
            else if (groupText.Contains(constant.Reference))
            {
                mean = string.Empty;
                slot = string.Empty;
                recipe = string.Empty;
                stdDev = string.Empty;
                passFail = string.Empty;
                waferText = string.Empty;
                Header.ScanPast(groupText, j, constant.Reference);
                reference = Header.GetToEOL(groupText, j);
                Header.ScanPast(groupText, j, constant.Source);
                source = Header.GetToEOL(groupText, j).Trim();
                Header.ScanPast(groupText, j, constant.Destination);
                destination = Header.GetToEOL(groupText, j).Trim();
            }
            else
            {
                if (!groupText.Contains(constant.Wafer))
                    continue;
                Header.ScanPast(groupText, j, constant.Wafer);
                waferText = Header.GetToEOL(groupText, j);
                if (waferText.EndsWith("."))
                    waferText = waferText.Remove(waferText.Length - 1, 1);
                Header.ScanPast(groupText, j, constant.Slot);
                slot = Header.GetToEOL(groupText, j);
                Header.ScanPast(groupText, j, constant.Recipe);
                recipe = Header.GetToEOL(groupText, j);
                if (recipe.EndsWith("."))
                    recipe = recipe.Remove(recipe.Length - 1, 1);
                Header.ScanPast(groupText, j, constant.Thickness);
                _ = GetToken(groupText, j);
                nextLine = PeekNextLine(groupText, j);
                if (nextLine.Contains(constant.OneHypen))
                {
                    Header.ScanPast(groupText, j, constant.OneHypen);
                    _ = GetToken(groupText, j);
                }
                for (int k = 0; k < 100; k++)
                {
                    nextLine = PeekNextLine(groupText, j);
                    if (nextLine.Contains("Slot"))
                        break;
                    if (string.IsNullOrEmpty(nextLine))
                    {
                        _ = Header.GetToEOL(groupText, j);
                        continue;
                    }
                    thickness = GetToken(groupText, j);
                    if (thickness == constant.Thickness)
                    {
                        _ = GetToken(groupText, j);
                        continue;
                    }
                    sites.Add(thickness);
                }
                Header.ScanPast(groupText, j, constant.Slot);
                _ = GetToken(groupText, j);
                passFail = GetToken(groupText, j);
                if (passFail.EndsWith("."))
                    passFail = passFail.Remove(passFail.Length - 1, 1);
                Header.ScanPast(groupText, j, constant.Mean);
                mean = GetToken(groupText, j);
                if (mean.EndsWith(","))
                    mean = mean.Remove(mean.Length - 1, 1);
                Header.ScanPast(groupText, j, constant.STDD);
                stdDev = Header.GetToEOL(groupText, j);
                if (stdDev.EndsWith("."))
                    stdDev = stdDev.Remove(stdDev.Length - 1, 1);
                reference = string.Empty;
                Header.ScanPast(groupText, j, constant.Source);
                source = Header.GetToEOL(groupText, j).Trim();
                Header.ScanPast(groupText, j, constant.Destination);
                destination = Header.GetToEOL(groupText, j).Trim();
            }
            wafer = new(destination: destination,
                        mean: mean,
                        passFail: passFail,
                        recipe: recipe,
                        reference: reference,
                        sites: sites,
                        slot: slot,
                        source: source,
                        stdDev: stdDev,
                        waferText: waferText);
            results.Add(wafer);
        }
        return results.AsReadOnly();
    }

}