using System.Collections.Generic;

namespace IdleSpectator;

public enum NarrativeDevelopmentKind
{
    Unknown,
    BondFormed,
    BondBroken,
    ChildBorn,
    FriendFormed,
    Death,
    Kill,
    RoleGained,
    RoleLost,
    HomeFounded,
    HomeGained,
    HomeLost,
    WarJoined,
    WarEnded,
    PlotJoined,
    PlotEnded,
    RivalEncounter,
    Transformation,
    Recovery
}

public enum NarrativeFunction
{
    Noise,
    CharacterTexture,
    WorldContext,
    ThreadOpener,
    Development,
    Escalation,
    TurningPoint,
    Resolution,
    Consequence
}

public enum NarrativeThreadKind
{
    Unknown,
    Courtship,
    Partnership,
    Lineage,
    SeparationGrief,
    RiseToRule,
    Reign,
    Succession,
    Founding,
    HomeLoss,
    Rivalry,
    PersonalCombat,
    WarInvolvement,
    PlotBetrayal,
    Transformation,
    Recovery
}

public enum NarrativePhase
{
    Setup,
    Pressure,
    Escalation,
    TurningPoint,
    Outcome,
    Consequence
}

public enum NarrativeThreadStatus
{
    Emerging,
    Active,
    Dormant,
    Resolved,
    Abandoned
}

public enum CharacterConsequenceKind
{
    Unknown,
    FoundLove,
    LostPartner,
    BecameParent,
    WasBorn,
    LostFamily,
    LostLife,
    TookLife,
    RoseToRole,
    LostRole,
    FoundedHome,
    LostHome,
    EnteredWar,
    SurvivedWar,
    JoinedPlot,
    PlotResolved,
    Transformed,
    Recovered,
    FoundHome
}

/// <summary>Evidence-backed semantic state transition. Contains no final player-facing prose.</summary>
public sealed class NarrativeDevelopment
{
    public string Id = "";
    public NarrativeDevelopmentKind Kind;
    public NarrativeFunction Function;
    public long SubjectId;
    public LifeSagaIdentity Subject;
    public long OtherId;
    public LifeSagaIdentity Other;
    public readonly List<long> OtherIds = new List<long>(4);
    public string CorrelationKey = "";
    public string FamilyKey = "";
    public string CityKey = "";
    public string KingdomKey = "";
    public string WarKey = "";
    public string PlotKey = "";
    public string PreviousState = "";
    public string NewState = "";
    public string Outcome = "";
    public string EvidenceSource = "";
    public string DateLabel = "";
    public float OccurredAt;
    public float Magnitude;
    public float Confidence = 1f;
    public bool Presentable = true;
    public bool IsNewStateChange = true;
}

public sealed class NarrativeCastRole
{
    public long CharacterId;
    public string Role = "";
}

/// <summary>Durable unresolved question centered on one life.</summary>
public sealed class NarrativeThread
{
    private const int MaxRetainedCast = 16;

    public string Id = "";
    public NarrativeThreadKind Kind;
    public long ProtagonistId;
    public readonly List<NarrativeCastRole> Cast = new List<NarrativeCastRole>(6);
    public readonly List<string> DevelopmentIds = new List<string>(12);
    public string AnchorKey = "";
    public string OpenedByDevelopmentId = "";
    public string LatestMeaningfulChangeId = "";
    public string CentralQuestion = "";
    public string PressureEvidence = "";
    public string Resolution = "";
    public NarrativePhase Phase;
    public NarrativeThreadStatus Status;
    public float OpenedAt;
    public float UpdatedAt;
    public float Momentum;
    public float Urgency;
    public float Coherence;
    public float Novelty;
    public float CoverageDebt;

    public bool IsOpen => Status == NarrativeThreadStatus.Emerging
                          || Status == NarrativeThreadStatus.Active
                          || Status == NarrativeThreadStatus.Dormant;

    public bool HasCast(long id)
    {
        if (id == 0) return false;
        for (int i = 0; i < Cast.Count; i++)
        {
            if (Cast[i] != null && Cast[i].CharacterId == id) return true;
        }

        return false;
    }

    public void AddCast(long id, string role)
    {
        if (id == 0 || HasCast(id)) return;
        Cast.Add(new NarrativeCastRole { CharacterId = id, Role = role ?? "" });
        while (Cast.Count > MaxRetainedCast)
        {
            int removeAt = 0;
            while (removeAt < Cast.Count
                   && Cast[removeAt] != null
                   && Cast[removeAt].CharacterId == ProtagonistId)
            {
                removeAt++;
            }
            if (removeAt >= Cast.Count) break;
            Cast.RemoveAt(removeAt);
        }
    }
}

public sealed class CharacterConsequence
{
    public string Id = "";
    public long CharacterId;
    public string ThreadId = "";
    public string DevelopmentId = "";
    public CharacterConsequenceKind Kind;
    public string Role = "";
    public long OtherId;
    public LifeSagaIdentity Other;
    public string Context = "";
    public string Outcome = "";
    public string DateLabel = "";
    public float OccurredAt;
    public float Importance;
    public float Confidence = 1f;
}

public sealed class CharacterStoryState
{
    public long CharacterId;
    public LifeSagaIdentity Identity;
    public readonly List<string> OpenThreadIds = new List<string>(6);
    public readonly List<string> ResolvedThreadIds = new List<string>(8);
    public readonly List<string> RecentDevelopmentIds = new List<string>(16);
    public readonly List<string> ConsequenceIds = new List<string>(16);
    public float StoryMomentum;
    public float StoryPotential;
    public float LastMeaningfulChangeAt;
}

public sealed class NarrativeChapter
{
    public string Id = "";
    public string ThreadId = "";
    public string Line = "";
    public string DateLabel = "";
    public float At;
    public float Importance;
}

public enum EpisodePurpose
{
    Establish,
    Develop,
    Payoff,
    Consequence,
    Reintroduce
}

public enum EpisodeShotRole
{
    Unknown,
    Establish,
    Development,
    Pressure,
    TurningPoint,
    Payoff,
    Consequence,
    Reintroduction,
    WorldContext
}

public sealed class EpisodePlan
{
    public string ThreadId = "";
    public long ProtagonistId;
    public readonly List<long> EligibleCastIds = new List<long>(6);
    public string EntryDevelopmentId = "";
    public EpisodePurpose Purpose;
    public string InformationGoal = "";
    public float StartedAt;
    public float LastProgressAt;
    public float InterruptedAt = -1f;
    public string LastShotKey = "";
    public long LastSubjectId;
    public int RepeatedSubjectCount;
    public int CombatShotCount;
    public bool GoalMet;
    public string CompletionReason = "";
    public readonly List<EpisodeShotRole> CoveredRoles = new List<EpisodeShotRole>(8);
    public readonly List<EpisodeShotRole> PendingRoles = new List<EpisodeShotRole>(8);
    public readonly List<string> RecentSemanticKeys = new List<string>(10);

    public bool HasCovered(EpisodeShotRole role) => CoveredRoles.Contains(role);

    public void Cover(EpisodeShotRole role)
    {
        if (role == EpisodeShotRole.Unknown || role == EpisodeShotRole.WorldContext) return;
        if (!CoveredRoles.Contains(role)) CoveredRoles.Add(role);
        PendingRoles.Remove(role);
    }
}

public sealed class NarrativeBeatModel
{
    public long PerspectiveCharacterId;
    public string DevelopmentId = "";
    public string ThreadId = "";
    public NarrativeDevelopmentKind ActionKind;
    public long OtherId;
    public LifeSagaIdentity Other;
    public string Change = "";
    public string Outcome = "";
    public NarrativePhase ThreadPhase;
    public string ContextEvidence = "";
    public float Confidence = 1f;
}