#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char *argv[])
{
	char pg_dbname[128] = {0};
	char pg_host[128] = {0};
	char pg_password[128] = {0};
	char pg_port[8] = {0};
	char pg_user[128] = {0};

	const char* env;

	env = getenv("POSTGRES_DBNAME");
	if (env != NULL)
	{
		strncpy(pg_dbname, env, sizeof(pg_dbname));
	}

	env = getenv("POSTGRES_HOST");
	if (env != NULL)
	{
		strncpy(pg_host, env, sizeof(pg_host));
	}

	env = getenv("POSTGRES_PASSWORD");
	if (env != NULL)
	{
		strncpy(pg_password, env, sizeof(pg_password));
	}

	env = getenv("POSTGRES_PORT");
	if (env != NULL)
	{
		strncpy(pg_port, env, sizeof(pg_port));
	}

	env = getenv("POSTGRES_USER");
	if (env != NULL)
	{
		strncpy(pg_user, env, sizeof(pg_user));
	}

	char *config_fmt = "host=%s port=%s user=%s password=%s dbname=%s sslmode=disable";

	printf(config_fmt, pg_host, pg_port, pg_user, pg_password, pg_dbname);
	printf("\n");

	char sqladdr[2048];
	snprintf(
		sqladdr,
		sizeof(sqladdr),
		config_fmt,
		pg_host,
		pg_port,
		pg_user,
		pg_password,
		pg_dbname
	);

	printf("%s", sqladdr);
	printf("\n");

}