Radicade/ServerTests/ReputationTests.cs

using RadicadeServer.RecNet.Enums.Moderation;
using RadicadeServer.RecNet.Moderation;
using Xunit;

namespace RadicadeServer.Tests;

/// <summary>
/// Unit tests for the reputation system spec:
///   - every player starts at ReputationScore = 10
///   - Noteriety starts at 0 and grows +0.5 per cheer / subscriber received
///   - bans drop reputation: -0.5 per ban, -1 per cheating ban, -4 per permanent ban (floored at 0)
///   - Trust label: Trusted (8-10), Neutral (6-7), Not Trusted (0-5)
///   - reports increment ReportCount, which never feeds Noteriety (so reports can't lock
///     the client's room-comment / club-creation features)
/// </summary>
public class ReputationTests
{
    [Fact]
    public void CheerCategory_MatchesTheClientsLadder()
    {
        // Copied off the client's own enum in dump.cs (and matching the archived 2023
        // servers FemRec and Rubidium). Numbering them sequentially silently broke every
        // cheer except General: none of 10/20/30/40 matched a switch arm.
        Assert.Equal(0, (int)CheerCategory.General);
        Assert.Equal(10, (int)CheerCategory.Helpful);
        Assert.Equal(20, (int)CheerCategory.Sportsman);
        Assert.Equal(30, (int)CheerCategory.GreatHost);
        Assert.Equal(40, (int)CheerCategory.Creative);
        // The badge only developers can equip. The client asks for it by this value, so
        // leaving it out of the enum made the request look like an unknown category.
        Assert.Equal(9000, (int)CheerCategory.RecRoomDeveloper);
    }

    [Fact]
    public void NewReputation_StartsAtTen()
    {
        var rep = new Reputation { AccountId = 42 };
        Assert.Equal(Reputation.DefaultReputation, rep.ReputationScore);
        Assert.Equal(10.0, rep.ReputationScore);
        Assert.Equal(0, rep.Noteriety);
        Assert.Equal(0, rep.ReportCount);
    }

    [Theory]
    [InlineData(10.0, "Trusted")]
    [InlineData(9.5, "Trusted")]
    [InlineData(8.0, "Trusted")]
    [InlineData(7.99, "Neutral")]
    [InlineData(7.0, "Neutral")]
    [InlineData(6.0, "Neutral")]
    [InlineData(5.99, "Not Trusted")]
    [InlineData(5.0, "Not Trusted")]
    [InlineData(1.0, "Not Trusted")]
    [InlineData(0.0, "Not Trusted")]
    public void Trust_FollowsTheScoreBands(double score, string expected)
    {
        var rep = new Reputation { AccountId = 1, ReputationScore = score };
        Assert.Equal(expected, rep.Trust);
    }

    [Fact]
    public void NormalBan_DropsReputationByHalf()
    {
        var rep = new Reputation { AccountId = 1, ReputationScore = 10 };
        rep.ApplyBanPenalty(permanent: false, cheating: false);
        Assert.Equal(9.5, rep.ReputationScore);
    }

    [Fact]
    public void CheatingBan_DropsReputationByOne()
    {
        var rep = new Reputation { AccountId = 1, ReputationScore = 10 };
        rep.ApplyBanPenalty(permanent: false, cheating: true);
        Assert.Equal(9.0, rep.ReputationScore);
    }

    [Fact]
    public void PermanentBan_DropsReputationByFour()
    {
        var rep = new Reputation { AccountId = 1, ReputationScore = 10 };
        rep.ApplyBanPenalty(permanent: true, cheating: false);
        Assert.Equal(6.0, rep.ReputationScore);
    }

    [Fact]
    public void CheatingPermanentBan_AppliesTheLargerPenalty()
    {
        // A cheating offense that escalates to permanent takes the permanent (-4) penalty.
        var rep = new Reputation { AccountId = 1, ReputationScore = 10 };
        rep.ApplyBanPenalty(permanent: true, cheating: true);
        Assert.Equal(6.0, rep.ReputationScore);
    }

    [Fact]
    public void RepeatedBans_NeverPushReputationNegative()
    {
        var rep = new Reputation { AccountId = 1, ReputationScore = 1.0 };
        rep.ApplyBanPenalty(permanent: true, cheating: true); // -4
        rep.ApplyBanPenalty(permanent: false, cheating: false); // -0.5
        Assert.Equal(0.0, rep.ReputationScore);
    }

    [Fact]
    public void AddCheer_GrowsNoterietyByHalfPerCheer()
    {
        var rep = new Reputation { AccountId = 1 };
        rep.AddCheer(CheerCategory.General);
        rep.AddCheer(CheerCategory.Creative);
        Assert.Equal(1.0, rep.Noteriety); // 2 x 0.5
        Assert.Equal(1, rep.CheerGeneral);
        Assert.Equal(1, rep.CheerCreative);
    }

    [Fact]
    public void AddSubscriber_GrowsNoterietyByHalf()
    {
        var rep = new Reputation { AccountId = 1 };
        rep.AddSubscriber();
        rep.AddSubscriber();
        Assert.Equal(1.0, rep.Noteriety);
    }

    [Fact]
    public void Reports_NeverTouchNoteriety()
    {
        // Simulates the report flow: ReportCount goes up, Noteriety stays a fame score.
        var rep = new Reputation { AccountId = 1 };
        for (var i = 0; i < 20; i++) rep.ReportCount += 1;
        Assert.Equal(20, rep.ReportCount);
        Assert.Equal(0.0, rep.Noteriety);
    }

    [Fact]
    public void ForClient_PassesThroughScoreTrustAndReportCount()
    {
        var rep = new Reputation { AccountId = 7, ReputationScore = 6.5, ReportCount = 3, Noteriety = 1.0 };
        var client = rep.ForClient();

        Assert.Equal(7, client.AccountId);
        Assert.Equal(6.5, client.ReputationScore);
        Assert.Equal("Neutral", client.Trust);
        Assert.Equal(3, client.ReportCount);
        // Noteriety is normalized to a tiny 0-1 fraction so the client's moderation
        // gates (room comments / club creation) never trip on it.
        Assert.Equal(Math.Min(0.05, rep.Noteriety / 100.0), client.Noteriety);
        Assert.True(client.Noteriety <= 0.05);
    }

    [Fact]
    public void ForClient_NormalizesNoterietyButNeverAboveTheCeiling()
    {
        var rep = new Reputation { AccountId = 1, Noteriety = 5000 };
        var client = rep.ForClient();
        Assert.Equal(0.05, client.Noteriety);
    }
}