using System;

namespace Jovian.EncounterSystem {
    /// <summary>
    /// Marker interface for the polymorphic payload of an <see cref="IEncounter"/>.
    /// Each concrete kind carries its own designer-facing data. Behaviour lives in resolvers
    /// and play modes — kinds are pure data. Add new kinds by creating a new <see cref="IEncounterKind"/>
    /// implementation; the SubclassSelector drawer will surface it automatically.
    /// </summary>
    public interface IEncounterKind {
    }

    /// <summary>Combat encounter: triggers combat play mode with the specified enemy group.</summary>
    [Serializable]
    public class CombatKind : IEncounterKind {
        public string enemyGroupId;
        public string rewardTableId;
    }

    /// <summary>Quest encounter: a step in a quest chain. The <see cref="nextEncounter"/> link is what
    /// <see cref="QuestProgress"/> walks to build the gated progression graph.</summary>
    [Serializable]
    public class QuestKind : IEncounterKind {
        public EncounterLink nextEncounter;
        public string questTitle;
    }

    /// <summary>Dialogue-driven encounter with an NPC and optional faction reputation impact.</summary>
    [Serializable]
    public class SocialKind : IEncounterKind {
        public string npcId;
        public string factionId;
        public int reputationDelta;
    }

    /// <summary>Puzzle encounter gated by a skill check against <see cref="difficultyClass"/>.</summary>
    [Serializable]
    public class PuzzleKind : IEncounterKind {
        public string puzzleId;
        public int difficultyClass;
    }

    /// <summary>Exploration/discovery encounter gated by a perception check (<see cref="perceptionDC"/>).</summary>
    [Serializable]
    public class ExplorationKind : IEncounterKind {
        public int perceptionDC;
    }

    /// <summary>Tutorial encounter driving a tutorial subsystem by id.</summary>
    [Serializable]
    public class TutorialKind : IEncounterKind {
        public string tutorialId;
    }

    /// <summary>Environmental hazard that applies damage or a status without player choice.</summary>
    [Serializable]
    public class HazardKind : IEncounterKind {
        public int damageAmount;
    }

    /// <summary>Catch-all with no kind-specific data — useful while prototyping.</summary>
    [Serializable]
    public class OtherKind : IEncounterKind {
    }
}