using System;
using System.Collections.Generic;
using System.Linq;
using Ophelias.Managers;
using System.Data.SQLite;

namespace Ophelias.Models
{
    internal class Reservation
    {
        internal int Id;
        internal Room Room;
        internal Guest Guest;
        internal Transaction Transaction;

        internal bool IsNoShow;

        internal ReservationType Type;
        internal ReservationStatus Status;

        internal DateTime CreationDate;
        internal DateTime StartDate;
        internal DateTime EndDate;

        internal DateTime? CheckIn;
        internal DateTime? CheckOut;
        internal DateTime? DateChanged;

        internal Reservation(int Id, Guest Guest, Transaction Transaction, ReservationType Type, ReservationStatus Status, 
            DateTime CreationDate, DateTime StartDate, DateTime EndDate, bool IsNoShow = false, DateTime? CheckIn = null, DateTime? CheckOut = null, DateTime? DateChanged = null)
        {
            this.Id = Id;
            this.Guest = Guest;
            this.Transaction = Transaction;
            this.IsNoShow = IsNoShow;
            this.Type = Type;
            this.Status = Status;
            this.CreationDate = CreationDate;
            this.StartDate = StartDate;
            this.EndDate = EndDate;
            this.CheckIn = CheckIn;
            this.CheckOut = CheckOut;
            this.DateChanged = DateChanged;
        }
        internal void ChangeReservationDates(DateTime StartDate, DateTime EndDate)
        {
            this.StartDate = StartDate;
            this.EndDate = EndDate;
            DateChanged = DateTime.Now.Date;
            using (DatabaseManager Manager = new DatabaseManager())
            {
                using (SQLiteCommand cmd = Manager.con.CreateCommand())
                {
                    string? query = QueryBuilder.UpdateReservation(Id: Id, Status: ReservationStatus.Changed, StartDate: this.StartDate, EndDate: this.EndDate, DateChanged: DateChanged);

                    if (query == null)
                        throw new Exception();

                    cmd.CommandText = query;
                    cmd.ExecuteNonQuery();
                }
            }
            Transaction.UpdateTransactionFees(HotelManager.GetBaseRate(), TxFunctions.Changed, TxFunctions.GetPayByDate(Type, this.StartDate, this.EndDate));
        }
        internal void CancelReservation()
        {
            using (DatabaseManager Manager = new DatabaseManager())
            {
                using (SQLiteCommand cmd = Manager.con.CreateCommand())
                {
                    string? query = QueryBuilder.UpdateReservation(Id: Id, Status: ReservationStatus.Cancelled, DateChanged: DateTime.Now.Date);

                    if (query == null)
                        throw new Exception();

                    cmd.CommandText = query;
                    cmd.ExecuteNonQuery();
                }
            }
        }
    }
    internal enum ReservationStatus
    {
        Active,
        Changed,
        Cancelled,
        Ended,
    }
    internal enum ReservationType
    {
        Conventional,
        Prepaid,
        Incentive,
        SixtyDayAdvance,
    }
}