#ifndef GRAPH_H
#define GRAPH_H

#include <stdint.h>

void random_adjacency(const uint64_t vertex_count,
                      uint64_t matrix[vertex_count][vertex_count]);

void calculate_distance_matrix(const uint64_t vertex_count,
                               const uint64_t adjacency_matrix[vertex_count][vertex_count],
                               uint64_t 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 uint64_t vertex_count,
                       const uint64_t distance_matrix[vertex_count][vertex_count],
                       uint64_t eccentricities[vertex_count]);

uint64_t get_radius(const uint64_t vertex_count,
                    const uint64_t eccentricities[vertex_count]);

uint64_t get_diameter(const uint64_t vertex_count,
                      const uint64_t eccentricities[vertex_count]);

void get_centre(const uint64_t vertex_count,
                const uint64_t eccentricities[vertex_count],
                const uint64_t radius,
                uint64_t centre[vertex_count]);

void calculate_path_matrix(const uint64_t vertex_count,
                           const uint64_t adjacency_matrix[vertex_count][vertex_count],
                           uint64_t path_matrix[vertex_count][vertex_count]);

void find_components_basic(const uint64_t vertex_count,
                           const uint64_t path_matrix[vertex_count][vertex_count],
                           uint64_t components[vertex_count][vertex_count]);

void find_components_dfs(const uint64_t vertex_count,
                         const uint64_t adjacency_matrix[vertex_count][vertex_count],
                         uint64_t components[vertex_count][vertex_count]);

void find_bridges_basic(const uint64_t vertex_count,
                        const uint64_t adjacency_matrix[vertex_count][vertex_count],
                        const uint64_t components[vertex_count][vertex_count],
                        uint64_t bridges[vertex_count][2]);

void find_bridges_dfs_v1(const uint64_t vertex_count,
                         const uint64_t adjacency_matrix[vertex_count][vertex_count],
                         const uint64_t components[vertex_count][vertex_count],
                         uint64_t bridges[vertex_count][2]);

void find_bridges_dfs_v2(const uint64_t vertex_count,
                         const uint64_t adjacency_matrix[vertex_count][vertex_count],
                         const uint64_t components[vertex_count][vertex_count],
                         uint64_t bridges[vertex_count][2]);

void find_articulations_basic(const uint64_t vertex_count,
                              const uint64_t adjacency_matrix[vertex_count][vertex_count],
                              const uint64_t components[vertex_count][vertex_count],
                              uint64_t articulations[vertex_count]);

void find_articulations_dfs_v1(const uint64_t vertex_count,
                               const uint64_t adjacency_matrix[vertex_count][vertex_count],
                               const uint64_t components[vertex_count][vertex_count],
                               uint64_t articulations[vertex_count]);

void find_articulations_dfs_v2(const uint64_t vertex_count,
                               const uint64_t adjacency_matrix[vertex_count][vertex_count],
                               const uint64_t components[vertex_count][vertex_count],
                               uint64_t articulations[vertex_count]);

#endif