using System;
using System.Collections.Generic;
using Microsoft.Data.Sqlite;

namespace ChaosBot.Attribute
{
    [AttributeUsage(AttributeTargets.Class)]
    public class DBEntity : System.Attribute
    {
        public readonly string Table;

        // Yeah... this table does not exist elsewhere except human-readable documentation
        public static readonly Dictionary<Type, SqliteType> DataTypes = new Dictionary<Type, SqliteType>
        {
            {typeof(bool), SqliteType.Integer},
            {typeof(byte), SqliteType.Integer},
            {typeof(byte[]), SqliteType.Blob},
            {typeof(char), SqliteType.Text},
            {typeof(DateTime), SqliteType.Text},
            {typeof(DateTimeOffset), SqliteType.Text},
            {typeof(Decimal), SqliteType.Text},
            {typeof(Double), SqliteType.Real},
            {typeof(Guid), SqliteType.Text},
            {typeof(Int16), SqliteType.Integer},
            {typeof(Int32), SqliteType.Integer},
            {typeof(Int64), SqliteType.Integer},
            {typeof(SByte), SqliteType.Integer},
            {typeof(Single), SqliteType.Real},
            {typeof(String), SqliteType.Text},
            {typeof(TimeSpan), SqliteType.Text},
            {typeof(UInt16), SqliteType.Integer},
            {typeof(UInt32), SqliteType.Integer},
            {typeof(UInt64), SqliteType.Integer}
        };

        public static readonly Dictionary<Type, string> ConstrainNames = new Dictionary<Type, string>
        {
            {typeof(DBNotNull), "nn"},
            {typeof(DBUnique), "uq"},
            {typeof(DBPrimaryKey), "pk"},
            {typeof(DBAutoIncrement), "ai"}, 
        };
        
        public DBEntity(string table)
        {
            this.Table = table;
        }
    }
}