// -----------------------------------------------------------------------------

using index_titles_by_names_t = std::map<std::string, std::shared_ptr<Title>>;
using index_actors_by_years_t = std::map<int, std::set<Actor>>;
using index_titles_by_years_t = std::multimap<int, std::shared_ptr<Title>>;
using index_titles_by_actors_t = std::unordered_multimap<Actor, std::shared_ptr<Title>>;
using index_cast_by_genres_t = std::multimap<std::tuple<std::string, int>, std::tuple<std::string, std::string, std::shared_ptr<Title>>>;

// -----------------------------------------------------------------------------

void db_index_1(const database_t& database, index_titles_by_names_t& index);
void db_index_2(const database_t& database, index_actors_by_years_t& index);
void db_index_3(const database_t& database, index_titles_by_years_t& index);
void db_index_4(const database_t& database, index_titles_by_actors_t& index);
void db_index_5(const database_t& database, index_cast_by_genres_t& index);

// -----------------------------------------------------------------------------

void db_query_6(
	const index_titles_by_names_t& index,
	std::string_view name,
	std::ostream& stream = std::cout
);

void db_query_7(
	const index_actors_by_years_t& index,
	int begin,
	int end,
	std::ostream& stream = std::cout
);

void db_query_8(
	const index_titles_by_years_t& index,
	int year,
	std::ostream& stream = std::cout
);

void db_query_9(
	const index_titles_by_years_t& index,
	int begin,
	int end,
	std::ostream& stream = std::cout
);

void db_query_10(
	const database_t& database,
	int begin,
	int end,
	std::ostream& stream = std::cout
);

void db_query_11(
	const database_t& database,
	const std::function<bool(const Title*)>& predicate,
	std::ostream& stream = std::cout
);

std::vector<Title*> db_query_12(
	const index_titles_by_actors_t& index,
	std::string_view surname
);

std::vector<std::string> db_query_13(
	const index_cast_by_genres_t& index,
	std::string_view genre,
	int year
);

// -----------------------------------------------------------------------------