using QuestionsApi.Models;
using Xunit;

namespace QuestionsApi.Tests;

public sealed class CreditEconomyTests
{
    [Fact]
    public void EarningPolicy_UsesTheAgreedRollingLimit()
    {
        Assert.Equal(30, CreditEconomy.RollingEarningLimit);
        Assert.Equal(TimeSpan.FromHours(24), CreditEconomy.EarningWindow);
    }

    [Theory]
    [InlineData(1, 1)]
    [InlineData(3, 1)]
    [InlineData(4, 2)]
    [InlineData(5, 3)]
    public void FirstCorrectAwardsScaleWithStoredDifficulty(int difficulty, int expected) =>
        Assert.Equal(expected, CreditEconomy.FirstCorrectAmount(difficulty));

    [Fact]
    public void DelayedRecoveryReplacesTheNormalReviewAward()
    {
        Assert.Equal(1, CreditEconomy.ReviewAmount(false));
        Assert.Equal(3, CreditEconomy.ReviewAmount(true));
    }

    [Fact]
    public void CreditStatus_DoesNotExposeUserOrOperationIdentifiers()
    {
        Assert.Null(typeof(CreditStatusResponse).GetProperty(nameof(UserCreditAccount.UserId)));
        Assert.Null(typeof(CreditStatusResponse).GetProperty(nameof(UserCreditAccount.RecentEarnings)));
        Assert.Null(typeof(CreditStatusResponse).GetProperty(nameof(UserCreditAccount.Purchases)));
        Assert.Null(typeof(CreditStatusResponse).GetProperty(nameof(UserCreditAccount.AppliedOperations)));
    }

    [Fact]
    public void PublicLedgerEntry_DoesNotExposeUserOrOperationIdentifiers()
    {
        Assert.Null(typeof(CreditLedgerEntryResponse).GetProperty(nameof(CreditLedgerEntry.UserId)));
        Assert.Null(typeof(CreditLedgerEntryResponse).GetProperty(nameof(CreditLedgerEntry.OperationId)));
        Assert.Null(typeof(CreditLedgerEntryResponse).GetProperty(nameof(CreditLedgerEntry.SourceId)));
    }

    [Fact]
    public void CatalogHasStableCoinOnlyUtilityPrices()
    {
        var exam = CreditEconomy.FindProduct(CreditEconomy.ExamTokenSku);
        var reset = CreditEconomy.FindProduct(CreditEconomy.QBankResetTokenSku);

        Assert.NotNull(exam);
        Assert.Equal(100, exam.CoinPrice);
        Assert.Equal(RzStoreGrant.ExamToken, exam.Grant);
        Assert.NotNull(reset);
        Assert.Equal(300, reset.CoinPrice);
        Assert.Equal(RzStoreGrant.QBankResetToken, reset.Grant);
        Assert.Equal(2, CreditEconomy.Products.Count);
    }

    [Fact]
    public void UnknownSkuIsRejectedByCatalog()
    {
        Assert.Null(CreditEconomy.FindProduct("cash_purchase"));
    }
}