using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using gehGassiApp.Domain.Vouchers;

namespace gehGassiApp.Core.Interfaces
{
    /// <summary>
    /// Schnittstellenbeschreibung für einen Service der die Gutscheine verwalten kann
    /// </summary>
    public interface IVoucherService
    {
        /// <summary>
        /// Validieren eines Gutschein-Codes für einen AppUser
        /// </summary>
        /// <param name="voucherCode">Gutscheincode</param>
        /// <param name="appUserId">Id des AppUsers</param>
        /// <param name="accessToken">Aktuelles Accesstoken</param>
        /// <param name="token">CancellationToken</param>
        /// <returns>CommunicationResult</returns>
        Task<CommunicationResult<CheckVoucherCodeResult>> CheckVoucherCodeAsync(string voucherCode, string appUserId, string accessToken, CancellationToken token);

        /// <summary>
        /// Versucht einen Gutscheincode mit Hilfe eines QR-Codes zu holen
        /// </summary>
        /// <param name="qrCode">QR-Code in Text</param>
        /// <param name="accessToken">Aktuelles Accesstoken</param>
        /// <param name="token">CancellationToken</param>
        /// <returns>CommunicationResult</returns>
        Task<CommunicationResult<string>> GetVoucherCodeByQrCode(string qrCode, string accessToken, CancellationToken token);

        /// <summary>
        /// Versucht einen Gutschein zu reservieren
        /// </summary>
        /// <param name="voucherId">Id des Gutscheins</param>
        /// <param name="code">Code des Gutscheins</param>
        /// <param name="appUserId">Id des AppUsers</param>
        /// <param name="walkId">Id des Walks</param>
        /// <param name="ammount">Betrag - kann kleiner Gutscheinwert sein</param>
        /// <param name="accessToken">Aktuelles Accesstoken</param>
        /// <param name="token">CancellationToken</param>
        /// <returns>CommunicationResult</returns>
        Task<CommunicationResult<ReserveVoucherResult>> ReserveVoucherAsync(string voucherId, string code, string appUserId, string walkId, decimal ammount, string accessToken, CancellationToken token);

        /// <summary>
        /// Stornieren eines Gutscheins
        /// </summary>
        /// <param name="voucherId">Id des Gutscheins</param>
        /// <param name="appUserId">Id des AppUsers</param>
        /// <param name="walkId">Id des Walks</param>
        /// <param name="accessToken">Aktuelles Accesstoken</param>
        /// <param name="token">CancellationToken</param>
        /// <returns>CommunicationResult</returns>
        Task<CommunicationResult<bool>> CancelVoucherAsync(string voucherId, string appUserId, string walkId, string accessToken, CancellationToken token);
    }
}