/* apk_solver.h - Alpine Package Keeper (APK)
 *
 * Copyright (C) 2005-2008 Natanael Copa <n@tanael.org>
 * Copyright (C) 2008-2013 Timo Teräs <timo.teras@iki.fi>
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation. See http://www.gnu.org/ for details.
 */

#ifndef APK_SOLVER_H
#define APK_SOLVER_H

struct apk_name;
struct apk_package;

struct apk_change {
	struct apk_package *old_pkg;
	struct apk_package *new_pkg;
	unsigned old_repository_tag : 15;
	unsigned new_repository_tag : 15;
	unsigned reinstall : 1;
};
APK_ARRAY(apk_change_array, struct apk_change);

struct apk_changeset {
	int num_install, num_remove, num_adjust;
	int num_total_changes;
	struct apk_change_array *changes;
};

#define APK_SOLVERF_UPGRADE		0x0001
#define APK_SOLVERF_AVAILABLE		0x0002
#define APK_SOLVERF_REINSTALL		0x0004
#define APK_SOLVERF_LATEST		0x0008
#define APK_SOLVERF_IGNORE_CONFLICT	0x0010

void apk_solver_set_name_flags(struct apk_name *name,
			       unsigned short solver_flags,
			       unsigned short solver_flags_inheritable);
int apk_solver_solve(struct apk_database *db,
		     unsigned short solver_flags,
		     struct apk_dependency_array *world,
		     struct apk_changeset *changeset);

int apk_solver_commit_changeset(struct apk_database *db,
				struct apk_changeset *changeset,
				struct apk_dependency_array *world);
void apk_solver_print_errors(struct apk_database *db,
			     struct apk_changeset *changeset,
			     struct apk_dependency_array *world);

int apk_solver_commit(struct apk_database *db, unsigned short solver_flags,
		      struct apk_dependency_array *world);

#endif