/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/

#pragma once

/***
  This file is part of systemd.

  Copyright 2011 Lennart Poettering

  systemd is free software; you can redistribute it and/or modify it
  under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation; either version 2.1 of the License, or
  (at your option) any later version.

  systemd is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public License
  along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/

typedef enum UnitFileScope UnitFileScope;
typedef enum UnitFileState UnitFileState;
typedef enum UnitFilePresetMode UnitFilePresetMode;
typedef enum UnitFileChangeType UnitFileChangeType;
typedef struct UnitFileChange UnitFileChange;
typedef struct UnitFileList UnitFileList;
typedef struct UnitFileInstallInfo UnitFileInstallInfo;

#include "hashmap.h"
#include "unit-name.h"
#include "path-lookup.h"

enum UnitFileScope {
        UNIT_FILE_SYSTEM,
        UNIT_FILE_GLOBAL,
        UNIT_FILE_USER,
        _UNIT_FILE_SCOPE_MAX,
        _UNIT_FILE_SCOPE_INVALID = -1
};

enum UnitFileState {
        UNIT_FILE_ENABLED,
        UNIT_FILE_ENABLED_RUNTIME,
        UNIT_FILE_LINKED,
        UNIT_FILE_LINKED_RUNTIME,
        UNIT_FILE_MASKED,
        UNIT_FILE_MASKED_RUNTIME,
        UNIT_FILE_STATIC,
        UNIT_FILE_DISABLED,
        UNIT_FILE_INDIRECT,
        UNIT_FILE_INVALID,
        _UNIT_FILE_STATE_MAX,
        _UNIT_FILE_STATE_INVALID = -1
};

enum UnitFilePresetMode {
        UNIT_FILE_PRESET_FULL,
        UNIT_FILE_PRESET_ENABLE_ONLY,
        UNIT_FILE_PRESET_DISABLE_ONLY,
        _UNIT_FILE_PRESET_MAX,
        _UNIT_FILE_PRESET_INVALID = -1
};

enum UnitFileChangeType {
        UNIT_FILE_SYMLINK,
        UNIT_FILE_UNLINK,
        _UNIT_FILE_CHANGE_TYPE_MAX,
        _UNIT_FILE_CHANGE_TYPE_INVALID = -1
};

struct UnitFileChange {
        UnitFileChangeType type;
        char *path;
        char *source;
};

struct UnitFileList {
        char *path;
        UnitFileState state;
};

struct UnitFileInstallInfo {
        char *name;
        char *path;
        char *user;

        char **aliases;
        char **wanted_by;
        char **required_by;
        char **also;

        char *default_instance;
};

int unit_file_enable(UnitFileScope scope, bool runtime, const char *root_dir, char **files, bool force, UnitFileChange **changes, unsigned *n_changes);
int unit_file_disable(UnitFileScope scope, bool runtime, const char *root_dir, char **files, UnitFileChange **changes, unsigned *n_changes);
int unit_file_reenable(UnitFileScope scope, bool runtime, const char *root_dir, char **files, bool force, UnitFileChange **changes, unsigned *n_changes);
int unit_file_link(UnitFileScope scope, bool runtime, const char *root_dir, char **files, bool force, UnitFileChange **changes, unsigned *n_changes);
int unit_file_preset(UnitFileScope scope, bool runtime, const char *root_dir, char **files, UnitFilePresetMode mode, bool force, UnitFileChange **changes, unsigned *n_changes);
int unit_file_preset_all(UnitFileScope scope, bool runtime, const char *root_dir, UnitFilePresetMode mode, bool force, UnitFileChange **changes, unsigned *n_changes);
int unit_file_mask(UnitFileScope scope, bool runtime, const char *root_dir, char **files, bool force, UnitFileChange **changes, unsigned *n_changes);
int unit_file_unmask(UnitFileScope scope, bool runtime, const char *root_dir, char **files, UnitFileChange **changes, unsigned *n_changes);
int unit_file_set_default(UnitFileScope scope, const char *root_dir, const char *file, bool force, UnitFileChange **changes, unsigned *n_changes);
int unit_file_get_default(UnitFileScope scope, const char *root_dir, char **name);
int unit_file_add_dependency(UnitFileScope scope, bool runtime, const char *root_dir, char **files, char *target, UnitDependency dep, bool force, UnitFileChange **changes, unsigned *n_changes);

UnitFileState unit_file_lookup_state(
                UnitFileScope scope,
                const char *root_dir,
                const LookupPaths *paths,
                const char *name);
UnitFileState unit_file_get_state(
                UnitFileScope scope,
                const char *root_dir,
                const char *filename);

int unit_file_get_list(UnitFileScope scope, const char *root_dir, Hashmap *h);

void unit_file_list_free(Hashmap *h);
int unit_file_changes_add(UnitFileChange **changes, unsigned *n_changes, UnitFileChangeType type, const char *path, const char *source);
void unit_file_changes_free(UnitFileChange *changes, unsigned n_changes);

int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char *name);

const char *unit_file_state_to_string(UnitFileState s) _const_;
UnitFileState unit_file_state_from_string(const char *s) _pure_;

const char *unit_file_change_type_to_string(UnitFileChangeType s) _const_;
UnitFileChangeType unit_file_change_type_from_string(const char *s) _pure_;

const char *unit_file_preset_mode_to_string(UnitFilePresetMode m) _const_;
UnitFilePresetMode unit_file_preset_mode_from_string(const char *s) _pure_;