/*
 *
 * Conky, a system monitor, based on torsmo
 *
 * Please see COPYING for details
 *
 * Copyright (c) 2005-2024 Brenden Matthews, Philip Kovacs, et. al.
 *	(see AUTHORS)
 * 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 as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef _LINUX_H
#define _LINUX_H

#include "../../common.h"

#include <iosfwd>
#include <optional>
#include <string>
#include <string_view>
#include <vector>

void print_disk_protect_queue(struct text_object *, char *, unsigned int);

void print_ioscheduler(struct text_object *, char *, unsigned int);
void print_laptop_mode(struct text_object *, char *, unsigned int);
void print_cpugovernor(struct text_object *, char *, unsigned int);

int update_gateway_info(void);
int update_gateway_info2(void);
void free_gateway_info(struct text_object *obj);
int gateway_exists(struct text_object *);
void print_gateway_iface(struct text_object *, char *, unsigned int);
void print_gateway_iface2(struct text_object *, char *, unsigned int);
void print_gateway_ip(struct text_object *, char *, unsigned int);
void print_battery_status(struct text_object *, char *, unsigned int);

enum { PB_BATT_STATUS, PB_BATT_PERCENT, PB_BATT_TIME };
void get_powerbook_batt_info(struct text_object *, char *, unsigned int);

void parse_i2c_sensor(struct text_object *, const char *);
void parse_hwmon_sensor(struct text_object *, const char *);
void parse_platform_sensor(struct text_object *, const char *);

void parse_i2c_bar(struct text_object *, const char *);
void parse_hwmon_bar(struct text_object *, const char *);
void parse_platform_bar(struct text_object *, const char *);

void print_sysfs_sensor(struct text_object *, char *, unsigned int);
double sysfs_sensor_barval(struct text_object *);
void free_sysfs_sensor(struct text_object *);

int get_entropy_avail(unsigned int *);
int get_entropy_poolsize(unsigned int *);

int update_stat(void);

// Maps a kernel CPU number to its 1-based slot in the per-core cpu usage arrays
// given the ascending list of present CPU numbers, or -1 if not present. Slot 0
// is the aggregate. Exposed for testing.
int cpu_present_slot(const std::vector<int> &present, int cpu_number);

void print_distribution(struct text_object *, char *, unsigned int);

// Returns the value of `key` from a `KEY=VALUE` formatted stream (e.g. an
// os-release file). Surrounding double quotes are stripped when present (the
// spec allows unquoted values). Returns nullopt when the key is absent or its
// value is empty.
std::optional<std::string> get_kv_field(std::istream &in, std::string_view key);

// Heuristically extracts a distribution name from a /proc/version line by
// capturing the first parenthesised, uppercase-initial token. Returns nullopt
// when no such token is found.
std::optional<std::string> parse_distribution_from_proc_version(
    const std::string &version);

bool is_conky_already_running(void);

extern char e_iface[64];
extern char interfaces_arr[MAX_NET_INTERFACES][64];

#endif /* _LINUX_H */
