using System;
using System.Globalization;
using System.Text.RegularExpressions;

namespace CryptoCalc
{

    public enum TransactionTypes
    {
        Buy,
        Sell,
        Transfer,
        Mining
    }


    public interface IDBClasses
    {

        static string DBName { get; }
        string DBTableName { get; }
        string DBVariables { get; }
        string DBSaveDataString { get; }

    }

    public class DBClasses : IDBClasses
    {
        #region Protected

        protected string dbVariables;

        #endregion

        #region Publics
        public static string DBName => "CryptoCalc";
        public virtual string DBTableName { get; }
        public string DBVariables => dbVariables;
        public string DBSaveDataString => $"({Regex.Replace(dbVariables, "@", "")}) values ({dbVariables})";

        public long Index { get; set; }
        public ulong UnixTime { get; set; }


        #endregion

        #region Functions

        public void SaveUnixTimeNow()
        {
            UnixTime = (ulong)DateTime.UtcNow.Subtract(DateTime.UnixEpoch).TotalSeconds;
        }

        public static ulong GetUnixTime(DateTime dateTime)
        {
            return (ulong)dateTime.Subtract(DateTime.UnixEpoch).TotalSeconds;
        }

        public static DateTime GetUTCTimeFromUnixTime(ulong unix)
        {
            return DateTime.UnixEpoch.AddSeconds(unix).ToUniversalTime();
        }

        public static DateTime GetLocalTimeFromUnixTime(ulong unix)
        {
            return DateTime.UnixEpoch.AddSeconds(unix).ToLocalTime();
        }

        #endregion

    }

    public class Transaction : DBClasses
    {

        #region Publics
        public override string DBTableName => "Transactions";

        public long WalletID { get; set; }
        public string Currency { get; set; }
        public long Amount { get; set; }
        public ulong AmountDecimal { get; set; }
        public string TransactionType { get; set; }
        public string FeeCurrency { get; set; }
        public long FeeAmount { get; set; }
        public ulong FeeAmountDecimal { get; set; }
        public string Platform { get; set; }
        public string Note { get; set; }

        #endregion

        #region Constructors

        public Transaction() { SetDBStrings(); }

        public Transaction(long walletID, string currency, decimal amount, string type)
        {
            SaveUnixTimeNow();
            WalletID = walletID;
            Currency = currency;
            (Amount, AmountDecimal) = Util.SplitDecimal(amount);
            TransactionType = type;

            Platform = "";
            Note = "";

            SetDBStrings();
        }

        public Transaction(string currency, decimal amount, string type, string feeCurrency, decimal feeAmount)
        {
            SaveUnixTimeNow();
            Currency = currency;
            (Amount, AmountDecimal) = Util.SplitDecimal(amount);
            TransactionType = type;
            FeeCurrency = feeCurrency;
            (FeeAmount, FeeAmountDecimal) = Util.SplitDecimal(feeAmount);
            Platform = "";
            Note = "";

            SetDBStrings();
        }

        #endregion

        #region Functions

        private void SetDBStrings()
        {
            dbVariables =
                      $"@{nameof(WalletID)},"
                    + $"@{nameof(UnixTime)},"
                    + $"@{nameof(Currency)},"
                    + $"@{nameof(Amount)},"
                    + $"@{nameof(AmountDecimal)},"
                    + $"@{nameof(TransactionType)},"
                    + $"@{nameof(FeeCurrency)},"
                    + $"@{nameof(FeeAmount)},"
                    + $"@{nameof(FeeAmountDecimal)},"
                    + $"@{nameof(Platform)},"
                    + $"@{nameof(Note)}";
        }

        public string FullInfo => $"{ Index } {WalletID} { GetLocalTimeFromUnixTime(UnixTime) } { Currency } { Util.CombineDecimal(Amount, AmountDecimal) } { TransactionType }";

        public string CreateTable(string walletTableName)
        {
            return
              $"CREATE TABLE IF NOT EXISTS \"{DBTableName}\" ("
            + $"\"{nameof(Index)}\"                 INTEGER NOT NULL UNIQUE,"
            + $"\"{nameof(WalletID)}\"              INTEGER NOT NULL,"
            + $"\"{nameof(UnixTime)}\"              INTEGER NOT NULL,"
            + $"\"{nameof(Currency)}\"              TEXT NOT NULL,"
            + $"\"{nameof(Amount)}\"                INTEGER NOT NULL,"
            + $"\"{nameof(AmountDecimal)}\"         INTEGER NOT NULL,"
            + $"\"{nameof(TransactionType)}\"       TEXT NOT NULL,"
            + $"\"{nameof(FeeCurrency)}\"           TEXT,"
            + $"\"{nameof(FeeAmount)}\"             INTEGER,"
            + $"\"{nameof(FeeAmountDecimal)}\"      INTEGER,"
            + $"\"{nameof(Platform)}\"              TEXT,"
            + $"\"{nameof(Note)}\"                  TEXT,"
            + $"PRIMARY KEY(\"{nameof(Index)}\"     AUTOINCREMENT),"
            + $"FOREIGN KEY(\"{nameof(WalletID)}\") REFERENCES \"{walletTableName}\"(\"{nameof(Index)}\")"
            + $"); ";
        }

        #endregion
    }


    public class Wallet : DBClasses
    {
        #region Publics
        public override string DBTableName => "Wallets";

        public ulong UnixTimeCreated { get; set; }
        public string Platform { get; set; }
        public string Name { get; set; }
        public string Currency { get; set; }
        public long Balance { get; set; }
        public ulong BalanceDecimal { get; set; }
        public int DefaultWallet { get; set; }
        public string Note { get; set; }

        #endregion

        #region Constructors

        public Wallet() { SetDBStrings(); }

        public Wallet(DateTime dateTime, string platform, string name, string currency, string note)
        {
            SaveUnixTimeNow();
            UnixTimeCreated = GetUnixTime(dateTime);
            Platform = platform;
            Name = name;
            Currency = currency;
            (Balance, BalanceDecimal) = Util.SplitDecimal(0);
            DefaultWallet = 0;
            Note = note;

            SetDBStrings();
        }

        #endregion

        #region Functions

        private void SetDBStrings()
        {
            dbVariables =
                  $"@{nameof(UnixTime)},"
                + $"@{nameof(UnixTimeCreated)},"
                + $"@{nameof(Platform)},"
                + $"@{nameof(Name)},"
                + $"@{nameof(Currency)},"
                + $"@{nameof(Balance)},"
                + $"@{nameof(BalanceDecimal)},"
                + $"@{nameof(DefaultWallet)},"
                + $"@{nameof(Note)}";
        }

        //public string FullInfo => $"{ Index.ToString() } { DateTimeString } { Currency } { Amount } { TransactionType }";

        public string CreateTable()
        {
            return
              $"CREATE TABLE IF NOT EXISTS \"{DBTableName}\" ("
            + $"\"{nameof(Index)}\"             INTEGER NOT NULL UNIQUE,"
            + $"\"{nameof(UnixTime)}\"          INTEGER NOT NULL,"
            + $"\"{nameof(UnixTimeCreated)}\"   INTEGER NOT NULL,"
            + $"\"{nameof(Platform)}\"          TEXT,"
            + $"\"{nameof(Name)}\"              TEXT,"
            + $"\"{nameof(Currency)}\"          TEXT NOT NULL,"
            + $"\"{nameof(Balance)}\"           INTEGER NOT NULL,"
            + $"\"{nameof(BalanceDecimal)}\"    INTEGER NOT NULL,"
            + $"\"{nameof(DefaultWallet)}\"     INTEGER,"
            + $"\"{nameof(Note)}\"              TEXT,"
            + $"PRIMARY KEY(\"{nameof(Index)}\" AUTOINCREMENT)"
            + $"); ";
        }
        #endregion
    }

}