#include extern "C" { struct database_state { sqlite3* vm; }; void database_state_init(struct database_state* s, const char* db_path); void database_state_free(struct database_state* s); void database_write_active(struct database_state* s, int collar_id, int active_status); void database_write_location(struct database_state* s, int collar_id, double x, double y); }