/*
 * InfiniPaint (fork)
 * Collab ACL: World → Person → Layer → Person×Layer (Allow/Deny/Inherit)
 */
#pragma once

#include <cstdint>
#include <map>
#include <string>
#include <cereal/types/map.hpp>
#include <cereal/types/string.hpp>

enum class CollabRight : uint8_t {
    Draw = 0,
    Move,
    Delete,
    Hide,
    ManageLayers,
    COUNT
};

enum class CollabTriState : uint8_t {
    Inherit = 0,
    Allow = 1,
    Deny = 2
};

struct CollabPermissionSet {
    CollabTriState draw = CollabTriState::Inherit;
    CollabTriState move = CollabTriState::Inherit;
    CollabTriState erase = CollabTriState::Inherit;
    CollabTriState hide = CollabTriState::Inherit;
    CollabTriState manageLayers = CollabTriState::Inherit;

    CollabTriState get(CollabRight right) const;
    void set(CollabRight right, CollabTriState state);
    bool any_concrete() const;

    static CollabPermissionSet all_allow();
    static CollabPermissionSet all_inherit();
    static CollabPermissionSet content_deny(); // Draw/Move/Delete Deny, rest Inherit

    template <typename Archive>
    void serialize(Archive& a) {
        a(draw, move, erase, hide, manageLayers);
    }

    bool operator==(const CollabPermissionSet&) const = default;
};

struct CollabSessionDefaults {
    // Concrete fallback when everything inherits (Inherit treated as Allow).
    CollabPermissionSet worldDefault = CollabPermissionSet::all_allow();
    // Copied onto ClientData when a player joins.
    CollabPermissionSet newPlayerDefaults = CollabPermissionSet::all_inherit();
    // Copied onto new layers' DisplayData.layerDefaults.
    CollabPermissionSet newLayerDefaults = CollabPermissionSet::all_inherit();

    template <typename Archive>
    void serialize(Archive& a) {
        a(worldDefault, newPlayerDefaults, newLayerDefaults);
    }

    bool operator==(const CollabSessionDefaults&) const = default;
};

/** Resolve Allow/Deny for peer on a layer. Host callers should short-circuit before this. */
bool collab_resolve_allow(
    CollabRight right,
    const CollabPermissionSet* personLayerOverride, // nullable
    const CollabPermissionSet& layerDefaults,
    const CollabPermissionSet& personDefaults,
    const CollabPermissionSet& worldDefault);

const char* collab_right_label(CollabRight right);
const char* collab_tristate_label(CollabTriState state);
CollabTriState collab_cycle_tristate(CollabTriState state);