// Copyright (c) 2020-present schick Informatik
// Description: Container for HAZA subclass templates

using System;
using System.Collections.Generic;
using System.Data;

namespace bsmd.database
{
    /// <summary>
    /// Container for a dangerous goods template description which is imported from SQLite / Excel DB
    /// Instances of this class will be offered to users as templates and respective DG entries created on them:
    /// IGC, IMSBC, IBC and MARPOL (not! IMDG)
    /// </summary>
    public class HAZPosTemplate
    {

        #region enums

        public enum SublistType
        {
            IBC,
            IGC,
            IMSBC,
            MARPOL
        }

        #endregion

        #region Properties

        public string Description { get; set; }

        public byte? Hazard { get; set; }

        public byte? Flashpoint { get; set; }

        public bool? SpecRef15_19 { get; set; }

        public bool? MHB { get; set; }

        public byte? IMSBC_HAZ { get; set; }

        public string UNNr { get; set; }

        public string IMOClass { get; set; }        

        public string Comment { get; set; }

        public SublistType TemplateType { get; set; }

        public byte? PollutionCategory { get; set; }

        #endregion

        #region static storage helper classes

        public static string GetQuery()
        {
            return "SELECT Beschreibung, HAZARD_ENUM, FP_ENUM, \"15.19?\", Typ, MHB, IMSBC_HAZ, \"UN-Nr.\", \"IMO-Cl.\", POLLUTION_CATEGORY_ENUM, Bemerkung FROM GEFAHRGUTLISTE ORDER BY Beschreibung";
        }

        public static List<HAZPosTemplate> LoadList(IDataReader reader)
        {
            List<HAZPosTemplate> result = new List<HAZPosTemplate>();

            while(reader.Read())
            {
                if (reader.IsDBNull(4)) continue; // this row has no type -> ignore
                HAZPosTemplate hpt = new HAZPosTemplate();
                hpt.Description = reader.GetString(0);
                if (!reader.IsDBNull(1))
                    hpt.Hazard = (byte) reader.GetDouble(1);
                if (!reader.IsDBNull(2))
                    hpt.Flashpoint = (byte) reader.GetDouble(2);
                if (!reader.IsDBNull(3))
                {
                    string specRefString = reader.GetString(3);
                    if (specRefString.Equals("JA", StringComparison.OrdinalIgnoreCase) || specRefString.Equals("Yes", StringComparison.OrdinalIgnoreCase)) hpt.SpecRef15_19 = true;
                    if (specRefString.Equals("NEIN", StringComparison.OrdinalIgnoreCase) || specRefString.Equals("No", StringComparison.OrdinalIgnoreCase)) hpt.SpecRef15_19 = false;
                }

                string type = reader.GetString(4);
                switch(type)
                {
                    case "IBC": hpt.TemplateType = SublistType.IBC; break;
                    case "IGC": hpt.TemplateType = SublistType.IGC; break;
                    case "IMSBC": hpt.TemplateType = SublistType.IMSBC ; break;
                    case "MARPOL": hpt.TemplateType = SublistType.MARPOL; break;
                    default:
                        continue; // ignore this thing
                }

                if(!reader.IsDBNull(5))
                {
                    string mhbstring = reader.GetString(5);
                    if (mhbstring.Equals("y", StringComparison.OrdinalIgnoreCase))
                        hpt.MHB = true;
                }

                if (!reader.IsDBNull(6))
                    hpt.IMSBC_HAZ = (byte)reader.GetDouble(6);
                if (!reader.IsDBNull(7))
                    hpt.UNNr = reader.GetString(7);
                if(!reader.IsDBNull(8))
                    hpt.IMOClass = reader.GetString(8);
                if (!reader.IsDBNull(9))
                    hpt.PollutionCategory = (byte) reader.GetDouble(9);                
                if (!reader.IsDBNull(10))
                    hpt.Comment = reader.GetString(10);

                result.Add(hpt);
            }

            return result;
        }

        #endregion

        #region overrides

        public override string ToString()
        {
            if (this.Description.Length > 75)
                return string.Format("{0}...", this.Description.Substring(0, 75));
            return Description;
        }

        #endregion

    }
}