#region License

// Copyright 2005-2019 Paul Kohler (https://github.com/paulkohler/minisqlquery). All rights reserved.
// This source code is made available under the terms of the GNU Lesser General Public License v3.0
// https://github.com/paulkohler/minisqlquery/blob/master/LICENSE
#endregion

using System.Diagnostics;

namespace MiniSqlQuery.Core.DbModel
{
    /// <summary>The db model column.</summary>
    [DebuggerDisplay("DbModelColumn: {Name} (DbModelType.Summary: {DbModelType.Summary}, Nullable: {Nullable}, IsKey: {IsKey})")]
    public class DbModelColumn : DbModelObjectBase
    {
        /// <summary>Initializes a new instance of the <see cref="DbModelColumn"/> class.</summary>
        public DbModelColumn()
        {
            Nullable = true;
            DbType = new DbModelType("varchar", 50);
            ObjectType = ObjectTypes.Column;
        }

        /// <summary>Gets or sets DbType.</summary>
        /// <value>The db type.</value>
        public virtual DbModelType DbType { get; set; }

        /// <summary>Gets or sets ForeignKeyReference.</summary>
        /// <value>The foreign key reference.</value>
        public virtual DbModelForeignKeyReference ForeignKeyReference { get; set; }

        /// <summary>Gets FullName.</summary>
        /// <value>The full name.</value>
        public override string FullName
        {
            get { return Name; }
        }

        /// <summary>Gets a value indicating whether HasFK.</summary>
        /// <value>The has fk.</value>
        public virtual bool HasFK
        {
            get { return ForeignKeyReference != null; }
        }

        /// <summary>Gets or sets a value indicating whether IsAutoIncrement.</summary>
        /// <value>The is auto increment.</value>
        public virtual bool IsAutoIncrement { get; set; }

        /// <summary>Gets or sets a value indicating whether IsIdentity.</summary>
        /// <value>The is identity.</value>
        public virtual bool IsIdentity { get; set; }

        /// <summary>Gets or sets a value indicating whether IsKey.</summary>
        /// <value>The is key.</value>
        public virtual bool IsKey { get; set; }

        /// <summary>Gets or sets a value indicating whether IsReadOnly.</summary>
        /// <value>The is read only.</value>
        public virtual bool IsReadOnly { get; set; }

        /// <summary>
        /// Gets or sets a value indicating whether this column is a concurrency field, such as a timestamp.
        /// </summary>
        /// <value>
        /// 	<c>true</c> if this instance is row version, or concurrency field; otherwise, <c>false</c>.
        /// </value>
        public virtual bool IsRowVersion { get; set; }

        /// <summary>Gets or sets a value indicating whether IsUnique.</summary>
        /// <value>The is unique.</value>
        public virtual bool IsUnique { get; set; }

        /// <summary>Gets a value indicating whether IsWritable.</summary>
        /// <value>The is writable.</value>
        public virtual bool IsWritable
        {
            get { return !IsReadOnly; }
        }

        /// <summary>Gets or sets a value indicating whether Nullable.</summary>
        /// <value>The nullable.</value>
        public virtual bool Nullable { get; set; }

        /// <summary>Gets the parent table of the column.</summary>
        /// <value>The parent table instance.</value>
        public virtual DbModelTable ParentTable { get; internal set; }
    }
}