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#pragma once

#include "fcmp/curve_trees.h"
#include "fcmp/tower_cycle.h"

using Helios       = fcmp::curve_trees::Helios;
using Selene       = fcmp::curve_trees::Selene;
using CurveTreesV1 = fcmp::curve_trees::CurveTreesV1;

const std::vector<CurveTreesV1::LeafTuple> generate_random_leaves(const CurveTreesV1 &curve_trees,
    const std::size_t num_leaves);

// https://github.com/kayabaNerve/fcmp-plus-plus/blob
//  /b2742e86f3d18155fd34dd1ed69cb8f79b900fce/crypto/fcmps/src/tests.rs#L81-L82
const std::size_t HELIOS_CHUNK_WIDTH = 38;
const std::size_t SELENE_CHUNK_WIDTH = 18;

// Helper class that can access the private members of the CurveTrees class
class CurveTreesUnitTest
{
public:
    CurveTreesUnitTest(CurveTreesV1 &curve_trees): m_curve_trees(curve_trees) {};

//member structs
public:
    template<typename C>
    using Layer = std::vector<typename C::Point>;

    // A complete tree, useful for testing (don't want to keep the whole tree in memory during normal operation)
    struct Tree final
    {
        std::vector<CurveTreesV1::LeafTuple> leaves;
        std::vector<Layer<Helios>> c1_layers;
        std::vector<Layer<Selene>> c2_layers;
    };

//public member functions
public:
    // Read the in-memory tree and get data from last chunks from each layer
    CurveTreesV1::LastChunks get_last_chunks(const Tree &tree);

    // Use the tree extension to extend the in-memory tree
    void extend_tree(const CurveTreesV1::TreeExtension &tree_extension, Tree &tree_inout);

    // Validate the in-memory tree by re-hashing every layer, starting from root and working down to leaf layer
    bool validate_tree(const Tree &tree);

    // logging helpers
    void log_last_chunks(const CurveTreesV1::LastChunks &last_chunks);
    void log_tree_extension(const CurveTreesV1::TreeExtension &tree_extension);
    void log_tree(const CurveTreesUnitTest::Tree &tree);

private:
    CurveTreesV1 &m_curve_trees;
};