#ifndef GRAPH_H
#define GRAPH_H

#include "matrix.h"

void random_adjacency(const ulong vertex_count,
                      ulong matrix[vertex_count][vertex_count]);

void random_adjacency_struct(const Matrix *matrix);

void calculate_distance_matrix(const ulong vertex_count,
                               const ulong adjacency_matrix[vertex_count][vertex_count],
                               ulong distance_matrix[vertex_count][vertex_count]);

// returns 1 if it is a disconnected graph and sets all values in eccentricities to UINT64_MAX
int get_eccentricities(const ulong vertex_count,
                       const ulong distance_matrix[vertex_count][vertex_count],
                       ulong eccentricities[vertex_count]);

ulong get_radius(const ulong vertex_count,
                    const ulong eccentricities[vertex_count]);

ulong get_diameter(const ulong vertex_count,
                      const ulong eccentricities[vertex_count]);

void get_centre(const ulong vertex_count,
                const ulong eccentricities[vertex_count],
                const ulong radius,
                ulong centre[vertex_count]);

void calculate_path_matrix(const ulong vertex_count,
                           const ulong adjacency_matrix[vertex_count][vertex_count],
                           ulong path_matrix[vertex_count][vertex_count]);

void find_components_basic(const ulong vertex_count,
                           const ulong path_matrix[vertex_count][vertex_count],
                           ulong components[vertex_count][vertex_count]);

void find_components_dfs(const ulong vertex_count,
                         const ulong adjacency_matrix[vertex_count][vertex_count],
                         ulong components[vertex_count][vertex_count]);

void find_bridges_basic(const ulong vertex_count,
                        const ulong adjacency_matrix[vertex_count][vertex_count],
                        const ulong components[vertex_count][vertex_count],
                        ulong bridges[vertex_count][2]);

void find_bridges_dfs_v1(const ulong vertex_count,
                         const ulong adjacency_matrix[vertex_count][vertex_count],
                         const ulong components[vertex_count][vertex_count],
                         ulong bridges[vertex_count][2]);

void find_bridges_dfs_v2(const ulong vertex_count,
                         const ulong adjacency_matrix[vertex_count][vertex_count],
                         const ulong components[vertex_count][vertex_count],
                         ulong bridges[vertex_count][2]);

void find_articulations_basic(const ulong vertex_count,
                              const ulong adjacency_matrix[vertex_count][vertex_count],
                              const ulong components[vertex_count][vertex_count],
                              ulong articulations[vertex_count]);

void find_articulations_dfs_v1(const ulong vertex_count,
                               const ulong adjacency_matrix[vertex_count][vertex_count],
                               const ulong components[vertex_count][vertex_count],
                               ulong articulations[vertex_count]);

void find_articulations_dfs_v2(const ulong vertex_count,
                               const ulong adjacency_matrix[vertex_count][vertex_count],
                               const ulong components[vertex_count][vertex_count],
                               ulong articulations[vertex_count]);

#endif