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

namespace DTS.SensorDB.TSF
{
    /// <summary>
    /// the DIM section of a TSF
    /// we currently do nothing with the DIM section other than parse it
    /// DIMs are not officially supported in DataPRO yet
    /// </summary>
    public class TSFDIMSection
    {
        private const string SECTION_START_HEADER = "---- DIM Begin (1.0) ----";
        private const string COLUMN_HEADER = "Datachan,Rack,Module,Chan,Description,Serial No,Mode,Inverted,EID,Filename,Scale,Filter Mode,Filter Threshold,ISO CODE,Cable Test";
        private const string SECTION_END_HEADER = "---- DIM End ----";

        private List<TSFDIMEntry> _dimEntries = new List<TSFDIMEntry>();
        public TSFDIMEntry[] DIMEntries
        {
            get { return _dimEntries.ToArray(); }
            set { _dimEntries = new List<TSFDIMEntry>(value); }
        }

        public void ReadFrom(List<string> lines, ref int currentLine, ref List<ReadTSFError> errors)
        {
            if (currentLine == lines.Count)
            {
                //errors.Add(new ReadTSFError(ReadTSFError.TSF_ERRORS.TSF_UNEXPECTED_EOF, currentLine));
                return;
            }
            string sectionStart = lines[currentLine++];
            if (false == sectionStart.Contains(SECTION_START_HEADER))
            {
                //DIM Section may not be defined for this TSF. Bail and dont error.
                currentLine--;
                return;
            }

            if (currentLine == lines.Count)
            {
                errors.Add(new ReadTSFError(ReadTSFError.TSF_ERRORS.TSF_UNEXPECTED_EOF, currentLine));
                return;
            }
            string columnHeaders = lines[currentLine++];
            if (columnHeaders != COLUMN_HEADER)
            {
                errors.Add(new ReadTSFError(ReadTSFError.TSF_ERRORS.TSF_DIM_INVALID_COLUMNSECTIONHEADER, currentLine, columnHeaders));
                return;
            }

            bool done = false;
            List<TSFDIMEntry> dims = new List<TSFDIMEntry>();
            while (!done)
            {
                if (currentLine == lines.Count) { errors.Add(new ReadTSFError(ReadTSFError.TSF_ERRORS.TSF_UNEXPECTED_EOF, currentLine)); return; }
                string line = lines[currentLine++];
                if (!line.Contains("DIM End"))
                {
                    TSFDIMEntry entry = new TSFDIMEntry();
                    string[] tokens = line.Split(new char[] { ',' });
                    for (int iCurField = 0; iCurField < tokens.Length; iCurField++)
                    {
                        string s = tokens[iCurField];
                        TSFDIMEntry.Fields field = (TSFDIMEntry.Fields)iCurField;
                        switch (field)
                        {
                            case TSFDIMEntry.Fields.CableTest:
                                try { entry.CableTest = Convert.ToInt32(s); }
                                catch (System.Exception) { errors.Add(new ReadTSFError(ReadTSFError.TSF_ERRORS.TSF_DIM_INVALID_CABLETEST, currentLine, s)); }
                                break;
                            case TSFDIMEntry.Fields.Chan:
                                try { entry.Chan = Convert.ToInt32(s); }
                                catch (System.Exception) { errors.Add(new ReadTSFError(ReadTSFError.TSF_ERRORS.TSF_DIM_INVALID_CHAN, currentLine, s)); }
                                break;
                            case TSFDIMEntry.Fields.Datachan:
                                try { entry.DataChan = Convert.ToInt32(s); }
                                catch (System.Exception) { errors.Add(new ReadTSFError(ReadTSFError.TSF_ERRORS.TSF_DIM_INVALID_DATACHAN, currentLine, s)); }
                                break;
                            case TSFDIMEntry.Fields.Description: entry.Description = s; break;
                            case TSFDIMEntry.Fields.EID: entry.EID = s; break;
                            case TSFDIMEntry.Fields.Filename: entry.FileName = s; break;
                            case TSFDIMEntry.Fields.FilterMode:
                                try { entry.FilterMode = Convert.ToInt32(s); }
                                catch (System.Exception) { errors.Add(new ReadTSFError(ReadTSFError.TSF_ERRORS.TSF_DIM_INVALID_FILTERMODE, currentLine, s)); }
                                break;
                            case TSFDIMEntry.Fields.FilterThreshold:
                                try { entry.FilterThreshold = Convert.ToDouble(s); }
                                catch (System.Exception) { errors.Add(new ReadTSFError(ReadTSFError.TSF_ERRORS.TSF_DIM_INVALID_FILTERTHRESHOLD, currentLine, s)); }
                                break;
                            case TSFDIMEntry.Fields.Inverted:
                                try { entry.Inverted = Convert.ToInt32(s); }
                                catch (System.Exception) { errors.Add(new ReadTSFError(ReadTSFError.TSF_ERRORS.TSF_DIM_INVALID_INVERTED, currentLine, s)); }
                                break;
                            case TSFDIMEntry.Fields.ISOCODE: entry.ISOCode = s; break;
                            case TSFDIMEntry.Fields.Mode: entry.Mode = s; break;
                            case TSFDIMEntry.Fields.Module:
                                try { entry.Module = Convert.ToInt32(s); }
                                catch (System.Exception) { errors.Add(new ReadTSFError(ReadTSFError.TSF_ERRORS.TSF_DIM_INVALID_MODULE, currentLine, s)); }
                                break;
                            case TSFDIMEntry.Fields.Rack:
                                try { entry.Rack = Convert.ToInt32(s); }
                                catch (System.Exception) { errors.Add(new ReadTSFError(ReadTSFError.TSF_ERRORS.TSF_DIM_INVALID_RACK, currentLine, s)); }
                                break;
                            case TSFDIMEntry.Fields.Scale:
                                try { entry.Scale = Convert.ToDouble(s); }
                                catch (System.Exception) { errors.Add(new ReadTSFError(ReadTSFError.TSF_ERRORS.TSF_DIM_INVALID_SCALE, currentLine, s)); }
                                break;
                            case TSFDIMEntry.Fields.SerialNo: entry.SerialNumber = s; break;
                            default: throw new NotSupportedException("TSFFile::ReadTSF unknown DIM field: " + field.ToString());
                        }
                    }
                    dims.Add(entry);
                }
                else { done = true; }
            }
            DIMEntries = dims.ToArray();
        }
    }
}