// Copyright (c) 2023- schick Informatik
// Description: Container for participants (Teilnehmer)

using System.ComponentModel;
using System.Data;

namespace brecal.model
{
    public class Participant : DbEntity
    {
        #region Enumerations

        // TODO: should localize the descriptions
        [Flags]
        public enum ParticipantType
        {
            [Description("not assigned")]
            NONE = 0,
            [Description("BSMD")]
            BSMD = 1,
            [Description("Terminal")]
            TERMINAL = 2,
            [Description("Flusslotsen")]
            PILOT = 4,
            [Description("Agentur")]
            AGENCY = 8,
            [Description("Festmacher")]
            MOORING = 16,
            [Description("Hafenamt")]
            PORT_ADMINISTRATION = 32,
            [Description("Schlepper")]
            TUG = 64,
        }

        [Flags]
        public enum ParticipantFlags
        {
            [Description("allow BSMD initial info")]
            ALLOW_BSMD = 1,
        }

        #endregion

        #region Properties

        public string? Name { get; set; }

        public string? Street { get; set; }

        public string? PostalCode { get; set; }

        public string? City { get; set; }

        public uint Type { get; set;}

        public uint Flags { get; set; }

        public bool Deleted { get; set; } = false;

        #endregion

        #region public static methods

        public static async Task<List<Participant>> LoadAll(IDBManager manager)
        {
            List<DbEntity> loadResultList = await manager.Load(SetLoadQuery, LoadElems);
            List<Participant> result = new();
            foreach (Participant p in loadResultList.Cast<Participant>())
                result.Add(p);
            return result;
        }

        public static List<DbEntity> LoadElems(IDataReader reader)
        {
            List<DbEntity> result = new();
            while (reader.Read())
            {
                Participant p = new();
                p.Id = (uint)reader.GetInt32(0);
                if (!reader.IsDBNull(1)) p.Name = reader.GetString(1);
                if (!reader.IsDBNull(2)) p.Street = reader.GetString(2);
                if (!reader.IsDBNull(3)) p.PostalCode = reader.GetString(3);
                if (!reader.IsDBNull(4)) p.City = reader.GetString(4);
                if (!reader.IsDBNull(5)) p.Type = (uint) reader.GetInt32(5);
                if (!reader.IsDBNull(6)) p.Flags = (uint)reader.GetInt32(6);
                if (!reader.IsDBNull(7)) p.Created = reader.GetDateTime(7);
                if (!reader.IsDBNull(8)) p.Modified = reader.GetDateTime(8);
                if (!reader.IsDBNull(9)) p.Deleted = reader.GetBoolean(9);
                result.Add(p);
            }
            return result;
        }

        public static void SetLoadQuery(IDbCommand cmd, params object?[] list)
        {
            cmd.CommandText = "SELECT id, name, street, postal_code, city, type, flags, created, modified, deleted FROM participant";
        }

        #endregion

        #region abstract method implementation

        public override void SetUpdate(IDbCommand cmd)
        {
            cmd.CommandText = "UPDATE participant set name = @NAME, street = @STREET, postal_code = @POSTAL_CODE, type = @TYPE, city = @CITY, flags = @FLAGS WHERE id = @ID";
            this.SetParameters(cmd);
        }

        public override void SetCreate(IDbCommand cmd)
        {
            cmd.CommandText = "INSERT INTO participant (name, street, postal_code, city, type, flags) VALUES ( @NAME, @STREET, @POSTAL_CODE, @CITY, @TYPE, @FLAGS)";
            this.SetParameters(cmd);
        }

        public override void SetDelete(IDbCommand cmd)
        {
            cmd.CommandText = "UPDATE participant SET deleted = 1 WHERE id = @ID";

            IDataParameter idParam = cmd.CreateParameter();
            idParam.ParameterName = "ID";
            idParam.Value = this.Id;
            cmd.Parameters.Add(idParam);
        }        

        #endregion

        #region private methods

        private void SetParameters(IDbCommand cmd)
        {
            IDbDataParameter name = cmd.CreateParameter();
            name.ParameterName = "NAME";
            name.Value = this.Name;
            cmd.Parameters.Add(name);

            IDbDataParameter street = cmd.CreateParameter();
            street.ParameterName = "STREET";
            street.Value = this.Street;
            cmd.Parameters.Add(street);

            IDataParameter postal_code = cmd.CreateParameter();
            postal_code.ParameterName = "POSTAL_CODE";
            postal_code.Value = this.PostalCode;
            cmd.Parameters.Add(postal_code);

            IDataParameter city = cmd.CreateParameter();
            city.ParameterName = "CITY";
            city.Value = this.City;
            cmd.Parameters.Add(city);

            IDataParameter flags = cmd.CreateParameter();
            flags.ParameterName = "FLAGS";
            flags.Value = this.Flags;
            cmd.Parameters.Add(flags);

            IDataParameter idParam = cmd.CreateParameter();
            idParam.ParameterName = "ID";
            idParam.Value = this.Id;
            cmd.Parameters.Add(idParam);

            IDataParameter typeParam = cmd.CreateParameter();
            typeParam.ParameterName = "TYPE";
            typeParam.Value = (int) this.Type;
            cmd.Parameters.Add(typeParam);
        }

        #endregion

        #region overrides

        public override string ToString()
        {
            return this.Name ?? $"{base.Id} - {this.GetType().Name}";
        }

        #endregion

        #region public type flag funcs

        public bool IsTypeFlagSet(ParticipantType flag)
        {
            return (this.Type & (uint)flag) != 0;
        }

        public void SetTypeFlag(bool value, ParticipantType flag)
        {
            if (value) this.Type |= (uint)flag;
            else this.Type &= (uint)~flag;
        }

        public bool IsFlagSet(ParticipantFlags flag)
        {
            return (this.Flags & (uint)flag) != 0;
        }

        public void SetFlag(bool value, ParticipantFlags flag)
        {
            if (value) this.Flags |= (uint)flag;
            else this.Flags &= (uint)~flag;
        }

        #endregion

    }
}