/*
 *  UwUfetch 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 <https://www.gnu.org/licenses/>.
 */

#define _GNU_SOURCE // for strcasestr

#ifdef __APPLE__
	#include <TargetConditionals.h> // for checking iOS
#endif
#include <dirent.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#if defined(__APPLE__) || defined(__FREEBSD__)
	#include <sys/sysctl.h>
	#include <time.h>
#else // defined(__APPLE__) || defined(__FREEBSD__)
	#ifdef __FREEBSD__
	#else // defined(__FREEBSD__) || defined(_WIN32)
		#ifndef _WIN32
			#include <sys/sysinfo.h>
		#else // _WIN32
			#include <sysinfoapi.h>
		#endif // _WIN32
	#endif	   // defined(__FREEBSD__) || defined(_WIN32)
#endif		   // defined(__APPLE__) || defined(__FREEBSD__)
#ifndef _WIN32
	#include <sys/ioctl.h>
	#include <sys/utsname.h>
#else // _WIN32
	#include <windows.h>
CONSOLE_SCREEN_BUFFER_INFO csbi;
#endif // _WIN32

// COLORS
#define NORMAL "\x1b[0m"
#define BOLD "\x1b[1m"
#define BLACK "\x1b[30m"
#define RED "\x1b[31m"
#define GREEN "\x1b[32m"
#define SPRING_GREEN "\x1b[38;5;120m"
#define YELLOW "\x1b[33m"
#define BLUE "\x1b[34m"
#define MAGENTA "\x1b[0;35m"
#define CYAN "\x1b[36m"
#define WHITE "\x1b[37m"
#define PINK "\x1b[38;5;201m"
#define LPINK "\x1b[38;5;213m"

#ifdef _WIN32
	#define BLOCK_CHAR "\xdb" // block char for colors
#else						  // _WIN32
	#define BLOCK_CHAR "\u2587"
#endif // _WIN32
#ifdef __APPLE__
	// buffers where data fetched from sysctl are stored
	// CPU
	#define CPUBUFFERLEN 128

char cpu_buffer[CPUBUFFERLEN];
size_t cpu_buffer_len = CPUBUFFERLEN;

// Installed RAM
int64_t mem_buffer	  = 0;
size_t mem_buffer_len = sizeof(mem_buffer);

// uptime
struct timeval time_buffer;
size_t time_buffer_len = sizeof(time_buffer);
#endif // __APPLE__

struct package_manager {
	char command_string[128]; // command to get number of packages installed
	char pkgman_name[16];	  // name of the package manager
};

// all configuration flags available
struct configuration {
	int ascii_image_flag, // when (0) ascii is printed, when (1) image is printed
		show_user_info,	  // all the following flags are 1 (true) by default
		show_os,
		show_host,
		show_kernel,
		show_cpu,
		show_gpu,
		show_ram,
		show_resolution,
		show_shell,
		show_pkgs,
		show_uptime,
		show_colors;
};

// info that will be printed with the logo
struct info {
	char user[128],	 // username
		host[256],	 // hostname (computer name)
		shell[64],	 // shell name
		model[256],	 // model name
		kernel[256], // kernel name (linux 5.x-whatever)
		os_name[64], // os name (arch linux, windows, mac os)
		cpu_model[256],
		gpu_model[64][256],
		pkgman_name[64], // package managers string
		image_name[128],
		*config_directory, // configuration directory name
		*cache_content;	   // cache file content
	int target_width,	   // for the truncate_str function
		screen_width,
		screen_height,
		ram_total,
		ram_used,
		pkgs; // full package count
	long uptime;

#ifndef _WIN32
	struct utsname sys_var;
#endif // _WIN32
#ifndef __APPLE__
	#ifdef __linux__
	struct sysinfo sys;
	#else // __linux__
		#ifdef _WIN32
	struct _SYSTEM_INFO sys;
		#endif // _WIN32
	#endif	   // __linux__
#endif		   // __APPLE__
#ifndef _WIN32
	struct winsize win;
#else  // _WIN32
	int ws_col, ws_rows;
#endif // _WIN32
};

#ifdef _WIN32
char* MOVE_CURSOR = "\033[21C"; // moves the cursor after printing the image or the ascii logo
#else
char* MOVE_CURSOR = "\033[18C";
#endif

// reads the config file
struct configuration parse_config(struct info* user_info) {
	char buffer[256];															 // buffer for the current line
	struct configuration config_flags = {0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}; // enabling all flags by default

	FILE* config = NULL;					   // config file pointer
	if (user_info->config_directory == NULL) { // if config directory is not set, try to open the default
		if (getenv("HOME") != NULL) {
			char homedir[512];
			sprintf(homedir, "%s/.config/uwufetch/config", getenv("HOME"));
			config = fopen(homedir, "r");
			if (!config)
				config = fopen("/etc/uwufetch/config", "r");
		}
	} else
		config = fopen(user_info->config_directory, "r");
	if (config == NULL) return config_flags; // if config file does not exist, return the defaults

	// reading the config file
	while (fgets(buffer, sizeof(buffer), config)) {
		sscanf(buffer, "distro=%s", user_info->os_name);
		if (sscanf(buffer, "ascii=%[truefalse]", buffer))
			config_flags.ascii_image_flag = !strcmp(buffer, "false");
		if (sscanf(buffer, "image=\"%[^\"]\"", user_info->image_name)) {
			if (user_info->image_name[0] == '~') {															  // replacing the ~ character with the home directory
				memmove(&user_info->image_name[0], &user_info->image_name[1], strlen(user_info->image_name)); // remove the first char
				char temp[128] = "/home/";
				strcat(temp, user_info->user);
				strcat(temp, user_info->image_name);
				sprintf(user_info->image_name, "%s", temp);
			}
			config_flags.ascii_image_flag = 1; // enable the image flag
		}

		// reading other values
		if (sscanf(buffer, "user=%[truefalse]", buffer))
			config_flags.show_user_info = !strcmp(buffer, "true");
		if (sscanf(buffer, "os=%[truefalse]", buffer))
			config_flags.show_os = strcmp(buffer, "false");
		if (sscanf(buffer, "host=%[truefalse]", buffer))
			config_flags.show_host = strcmp(buffer, "false");
		if (sscanf(buffer, "kernel=%[truefalse]", buffer))
			config_flags.show_kernel = strcmp(buffer, "false");
		if (sscanf(buffer, "cpu=%[truefalse]", buffer))
			config_flags.show_cpu = strcmp(buffer, "false");
		if (sscanf(buffer, "gpu=%[truefalse]", buffer))
			config_flags.show_gpu = strcmp(buffer, "false");
		if (sscanf(buffer, "ram=%[truefalse]", buffer))
			config_flags.show_ram = strcmp(buffer, "false");
		if (sscanf(buffer, "resolution=%[truefalse]", buffer))
			config_flags.show_resolution = strcmp(buffer, "false");
		if (sscanf(buffer, "shell=%[truefalse]", buffer))
			config_flags.show_shell = strcmp(buffer, "false");
		if (sscanf(buffer, "pkgs=%[truefalse]", buffer))
			config_flags.show_pkgs = strcmp(buffer, "false");
		if (sscanf(buffer, "uptime=%[truefalse]", buffer))
			config_flags.show_uptime = strcmp(buffer, "false");
		if (sscanf(buffer, "colors=%[truefalse]", buffer))
			config_flags.show_colors = strcmp(buffer, "false");
	}
	fclose(config);
	return config_flags;
}

// gets the installed package count and package managers name
#ifdef _WIN32
int pkgman(struct info* user_info, struct configuration* config_flags)
#else // _WIN32
int pkgman(struct info* user_info)
#endif
{ // this is just a function that returns the total of installed packages
	int total = 0;

#ifndef __APPLE__
	// this function is not used on mac os because it causes lots of problems
	#ifndef _WIN32
	// all supported package managers
	struct package_manager pkgmans[] =
		{{"apt list --installed 2> /dev/null | wc -l", "(apt)"},
		 {"apk info 2> /dev/null | wc -l", "(apk)"},
		 //  {"dnf list installed 2> /dev/null | wc -l", "(dnf)"}, // according to https://stackoverflow.com/questions/48570019/advantages-of-dnf-vs-rpm-on-fedora, dnf and rpm return the same number of packages
		 {"qlist -I 2> /dev/null | wc -l", "(emerge)"},
		 {"flatpak list 2> /dev/null | wc -l", "(flatpak)"},
		 {"snap list 2> /dev/null | wc -l", "(snap)"},
		 {"guix package --list-installed 2> /dev/null | wc -l", "(guix)"},
		 {"nix-store -q --requisites /run/current-system/sw 2> /dev/null | wc -l", "(nix)"},
		 {"pacman -Qq 2> /dev/null | wc -l", "(pacman)"},
		 {"pkg info 2>/dev/null | wc -l", "(pkg)"},
		 {"port installed 2> /dev/null | tail -n +2 | wc -l", "(port)"},
		 {"brew list 2> /dev/null | wc -l", "(brew)"},
		 {"rpm -qa --last 2> /dev/null | wc -l", "(rpm)"},
		 {"xbps-query -l 2> /dev/null | wc -l", "(xbps)"},
		 {"zypper -q se --installed-only 2> /dev/null | wc -l", "(zypper)"}};
	const int pkgman_count = sizeof(pkgmans) / sizeof(pkgmans[0]); // number of package managers
	int comma_separator	   = 0;
	for (int i = 0; i < pkgman_count; i++) {
		struct package_manager* current = &pkgmans[i]; // pointer to current package manager

		FILE* fp			   = popen(current->command_string, "r"); // trying current package manager
		unsigned int pkg_count = 0;

		if (fscanf(fp, "%u", &pkg_count) == 3) continue; // if a number is found, continue the loop
		pclose(fp);

		// adding a package manager with its package count to user_info->pkgman_name
		total += pkg_count;
		if (pkg_count > 0) {
			if (comma_separator++) strcat(user_info->pkgman_name, ", ");
			char spkg_count[16];
			sprintf(spkg_count, "%u", pkg_count);
			strcat(user_info->pkgman_name, spkg_count);
			strcat(user_info->pkgman_name, " ");
			strcat(user_info->pkgman_name, current->pkgman_name);
		}
	}
	#else  // _WIN32
	// chocolatey for windows
	if (config_flags->show_pkgs) {
		FILE* fp = popen("choco list -l --no-color 2> nul", "r");
		unsigned int pkg_count;
		char buffer[7562] = {0};
		while (fgets(buffer, sizeof(buffer), fp)) {
			sscanf(buffer, "%u packages installed.", &pkg_count);
		}
		if (fp) pclose(fp);

		total = pkg_count;
		char spkg_count[16];
		sprintf(spkg_count, "%u", pkg_count);
		strcat(user_info->pkgman_name, spkg_count);
		strcat(user_info->pkgman_name, " ");
		strcat(user_info->pkgman_name, "(chocolatey)");
	}
	#endif // _WIN32

#endif
	return total;
}

#ifdef __APPLE__
// gets the uptime for mac os
int uptime_apple() {
	int mib[2] = {CTL_KERN, KERN_BOOTTIME};
	sysctl(mib, 2, &time_buffer, &time_buffer_len, NULL, 0);

	time_t bsec = time_buffer.tv_sec;
	time_t csec = time(NULL);

	return difftime(csec, bsec);
}
#endif

#ifdef __FREEBSD__
// gets the uptime for freebsd
int uptime_freebsd() { // this code is from coreutils uptime: https://github.com/coreutils/coreutils/blob/master/src/uptime.c
	int boot_time		  = 0;
	static int request[2] = {CTL_KERN, KERN_BOOTTIME};
	struct timeval result;
	size_t result_len = sizeof result;

	if (sysctl(request, 2, &result, &result_len, NULL, 0) >= 0)
		boot_time = result.tv_sec;
	int time_now = time(NULL);
	return time_now - boot_time;
}
#endif

// prints logo (as an image) of the given system.
void print_image(struct info* user_info) {
#ifndef __IPHONE__
	char command[256];
	if (strlen(user_info->image_name) > 1)
		sprintf(command, "viu -t -w 18 -h 8 %s 2> /dev/null", user_info->image_name); // creating the command to show the image
	else {
		if (strcmp(user_info->os_name, "android") == 0)
			sprintf(command, "viu -t -w 18 -h 8 /data/data/com.termux/files/usr/lib/uwufetch/%s.png 2> /dev/null", user_info->os_name); // image command for android
		else if (strcmp(user_info->os_name, "macos") == 0)
			sprintf(command, "viu -t -w 18 -h 8 /usr/local/lib/uwufetch/%s.png 2> /dev/null", user_info->os_name);
		else
			sprintf(command, "viu -t -w 18 -h 8 /usr/lib/uwufetch/%s.png 2> /dev/null", user_info->os_name); // image command for other systems
	}
	printf("\n");
	if (system(command) != 0) // if viu is not installed or the image is missing
		printf("\033[0E\033[3C%s\n"
			   "   There was an\n"
			   "    error: viu\n"
			   " is not installed\n"
			   "   or the image\n"
			   "   is not found\n"
			   "  Read IMAGES.md\n"
			   "   for more info.\n\n",
			   RED);
#else
	// unfortunately, the iOS stdlib does not have
	// system();
	// because it reports that it is not available under iOS during compilation
	printf("\033[0E\033[3C%s\n"
		   "   There was an\n"
		   "   error: images\n"
		   "   are currently\n"
		   "  disabled on iOS.\n\n",
		   RED);
#endif
}

// uwufies distro name
void uwu_name(struct configuration* config_flags, struct info* user_info) {
#define STRING_TO_UWU(original, uwufied)           \
	if (strcmp(user_info->os_name, original) == 0) \
	sprintf(user_info->os_name, "%s", uwufied)

	// linux
	STRING_TO_UWU("alpine", "Nyalpine");
	else STRING_TO_UWU("amogos", "AmogOwOS");
	else STRING_TO_UWU("arch", "Nyarch Linuwu");
	else STRING_TO_UWU("arcolinux", "ArcOwO Linuwu");
	else STRING_TO_UWU("artix", "Nyartix Linuwu");
	else STRING_TO_UWU("debian", "Debinyan");
	else STRING_TO_UWU("endeavouros", "endeavOwO");
	else STRING_TO_UWU("EndeavourOS", "endeavOwO");
	else STRING_TO_UWU("fedora", "Fedowa");
	else STRING_TO_UWU("gentoo", "GentOwO");
	else STRING_TO_UWU("gnu", "gnUwU");
	else STRING_TO_UWU("guix", "gnUwU gUwUix");
	else STRING_TO_UWU("linuxmint", "LinUWU Miwint");
	else STRING_TO_UWU("manjaro", "Myanjawo");
	else STRING_TO_UWU("manjaro-arm", "Myanjawo AWM");
	else STRING_TO_UWU("neon", "KDE NeOwOn");
	else STRING_TO_UWU("nixos", "nixOwOs");
	else STRING_TO_UWU("opensuse-leap", "OwOpenSUSE Leap");
	else STRING_TO_UWU("opensuse-tumbleweed", "OwOpenSUSE Tumbleweed");
	else STRING_TO_UWU("pop", "PopOwOS");
	else STRING_TO_UWU("raspbian", "RaspNyan");
	else STRING_TO_UWU("slackware", "Swackwawe");
	else STRING_TO_UWU("solus", "sOwOlus");
	else STRING_TO_UWU("ubuntu", "Uwuntu");
	else STRING_TO_UWU("void", "OwOid");
	else STRING_TO_UWU("xerolinux", "xuwulinux");
	else STRING_TO_UWU("android", "Nyandroid"); // android at the end because it could be not considered as an actual distribution of gnu/linux

	// BSD
	else STRING_TO_UWU("freebsd", "FweeBSD");
	else STRING_TO_UWU("openbsd", "OwOpenBSD");
	// Apple family
	else STRING_TO_UWU("macos", "macOwOS");
	else STRING_TO_UWU("ios", "iOwOS");

	// Windows
	else STRING_TO_UWU("windows", "WinyandOwOws");

	else {
		sprintf(user_info->os_name, "%s", "unknown"); // replacing the original os name with the uwufied version
		if (config_flags->ascii_image_flag == 1) {
			print_image(user_info);
			printf("\n");
		}
	}
#undef STRING_TO_UWU
}

// prints all the collected info and returns the number of printed lines
int print_info(struct configuration* config_flags, struct info* user_info) {
	int line_count = 0;
#ifdef _WIN32
	// prints without overflowing the terminal width
	#define responsively_printf(buf, format, ...)         \
		{                                                 \
			sprintf(buf, format, __VA_ARGS__);            \
			printf("%.*s\n", user_info->ws_col - 1, buf); \
			line_count++;                                 \
		}
#else // _WIN32
	// prints without overflowing the terminal width
	#define responsively_printf(buf, format, ...)             \
		{                                                     \
			sprintf(buf, format, __VA_ARGS__);                \
			printf("%.*s\n", user_info->win.ws_col - 1, buf); \
			line_count++;                                     \
		}
#endif					  // _WIN32
	char print_buf[1024]; // for responsively print

	// print collected info - from host to cpu info
	printf("\033[9A"); // to align info text
	if (config_flags->show_user_info)
		responsively_printf(print_buf, "%s%s%s%s@%s", MOVE_CURSOR,
							NORMAL, BOLD, user_info->user, user_info->host);
	uwu_name(config_flags, user_info);
	if (config_flags->show_os)
		responsively_printf(print_buf, "%s%s%sOWOS        %s%s",
							MOVE_CURSOR, NORMAL, BOLD, NORMAL,
							user_info->os_name);
	// Comment this section, to get rid of the ¨To Be Filled By O.E.M.¨ text, if your computer hasn't had any OEM distributor filled in.
	if (config_flags->show_host)
		responsively_printf(print_buf, "%s%s%sMOWODEL     %s%s",
							MOVE_CURSOR, NORMAL, BOLD, NORMAL,
							user_info->model);
	if (config_flags->show_kernel)
		responsively_printf(print_buf, "%s%s%sKEWNEL      %s%s",
							MOVE_CURSOR, NORMAL, BOLD, NORMAL,
							user_info->kernel);
	if (config_flags->show_cpu)
		responsively_printf(print_buf, "%s%s%sCPUWU       %s%s",
							MOVE_CURSOR, NORMAL, BOLD, NORMAL,
							user_info->cpu_model);

	// print the gpus
	if (config_flags->show_gpu)
		for (int i = 0; user_info->gpu_model[i][0]; i++)
			responsively_printf(print_buf, "%s%s%sGPUWU       %s%s", MOVE_CURSOR, NORMAL, BOLD, NORMAL, user_info->gpu_model[i]);

	if (config_flags->show_ram) // print ram
		responsively_printf(print_buf, "%s%s%sWAM         %s%i MiB/%i MiB", MOVE_CURSOR, NORMAL, BOLD, NORMAL, (user_info->ram_used), user_info->ram_total);
	if (config_flags->show_resolution) // print resolution
		if (user_info->screen_width != 0 || user_info->screen_height != 0)
			responsively_printf(print_buf, "%s%s%sRESOWUTION%s  %dx%d", MOVE_CURSOR, NORMAL, BOLD, NORMAL, user_info->screen_width, user_info->screen_height);
	if (config_flags->show_shell) // print shell name
		responsively_printf(print_buf, "%s%s%sSHEWW       %s%s", MOVE_CURSOR, NORMAL, BOLD, NORMAL, user_info->shell);
#if defined(__APPLE__) && !defined(__IPHONE__) // some time ago __IPHONE__ was defined as TARGET_OS_IPHONE, but it was defined also in m1 macs, so I changed it
	if (config_flags->show_pkgs)			   // print pkgs for mac os
		system("ls $(brew --cellar) | wc -l | awk -F' ' '{print \"  \x1b[34m                   \x1b[0m\x1b[1mPKGS\x1b[0m        \"$1 \" (brew)\"}'");
#else
	if (config_flags->show_pkgs) // print pkgs
		responsively_printf(print_buf, "%s%s%sPKGS        %s%s%d: %s", MOVE_CURSOR, NORMAL, BOLD, NORMAL, NORMAL, user_info->pkgs, user_info->pkgman_name);
#endif
	if (config_flags->show_uptime) { // print uptime
		if (user_info->uptime == 0) {

#ifdef __APPLE__
			user_info->uptime = uptime_apple();
#else
	#ifdef __FREEBSD__
			user_info->uptime = uptime_freebsd();
	#else
		#ifdef _WIN32
			user_info->uptime = GetTickCount() / 1000;
		#else  // _WIN32
			user_info->uptime = user_info->sys.uptime;
		#endif // _WIN32
	#endif
#endif
		}
		switch (user_info->uptime) { // formatting the uptime which is store in seconds
		case 0 ... 3599:
			responsively_printf(print_buf, "%s%s%sUWUPTIME    %s%lim", MOVE_CURSOR, NORMAL, BOLD, NORMAL, user_info->uptime / 60 % 60);
			break;
		case 3600 ... 86399:
			responsively_printf(print_buf, "%s%s%sUWUPTIME    %s%lih, %lim", MOVE_CURSOR, NORMAL, BOLD, NORMAL, user_info->uptime / 3600, user_info->uptime / 60 % 60);
			break;
		default:
			responsively_printf(print_buf, "%s%s%sUWUPTIME    %s%lid, %lih, %lim", MOVE_CURSOR, NORMAL, BOLD, NORMAL, user_info->uptime / 86400, user_info->uptime / 3600 % 24, user_info->uptime / 60 % 60);
		}
	}
	if (config_flags->show_colors) // print colors
		printf("%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
			   MOVE_CURSOR, BOLD, BLACK, BLOCK_CHAR, BLOCK_CHAR, RED,
			   BLOCK_CHAR, BLOCK_CHAR, GREEN, BLOCK_CHAR, BLOCK_CHAR, YELLOW,
			   BLOCK_CHAR, BLOCK_CHAR, BLUE, BLOCK_CHAR, BLOCK_CHAR, MAGENTA,
			   BLOCK_CHAR, BLOCK_CHAR, CYAN, BLOCK_CHAR, BLOCK_CHAR, WHITE,
			   BLOCK_CHAR, BLOCK_CHAR, NORMAL);
	return line_count;
}

// writes cache to cache file
void write_cache(struct info* user_info) {
	char cache_file[512];
	sprintf(cache_file, "%s/.cache/uwufetch.cache", getenv("HOME")); // default cache file location
	FILE* cache_fp = fopen(cache_file, "w");
	if (cache_fp == NULL) {
		fprintf(stderr, "Failed to write to %s!", cache_file);
		return;
	}
// writing all info to the cache file
#ifdef __APPLE__
	user_info->uptime = uptime_apple();
#else
	#ifdef __FREEBSD__
	user_info->uptime = uptime_freebsd();
	#else
		#ifndef _WIN32
	user_info->uptime = user_info->sys.uptime;
		#endif // _WIN32
	#endif
#endif
	fprintf( // writing most of the values to config file
		cache_fp,
		"user=%s\nhost=%s\nversion_name=%s\nhost_model=%s\nkernel=%s\ncpu=%"
		"s\nscreen_width=%d\nscreen_height=%d\nshell=%s\npkgs=%d\npkgman_name=%"
		"s\n",
		user_info->user, user_info->host, user_info->os_name,
		user_info->model, user_info->kernel, user_info->cpu_model,
		user_info->screen_width, user_info->screen_height, user_info->shell,
		user_info->pkgs, user_info->pkgman_name);

	for (int i = 0; user_info->gpu_model[i][0]; i++) // writing gpu names to file
		fprintf(cache_fp, "gpu=%s\n", user_info->gpu_model[i]);

#ifdef __APPLE__
		/* char brew_command[2048];
	sprintf(brew_command, "ls $(brew --cellar) | wc -l | awk -F' ' '{print \"
	\x1b[34mw         w     \x1b[0m\x1b[1mPKGS\x1b[0m        \"$1 \" (brew)\"}'
	> %s", cache_file); system(brew_command); */
#endif
	fclose(cache_fp);
	return;
}

// reads cache file if it exists
int read_cache(struct info* user_info) {
	char cache_file[512];
	sprintf(cache_file, "%s/.cache/uwufetch.cache", getenv("HOME")); // cache file location
	FILE* cache_fp = fopen(cache_file, "r");
	if (cache_fp == NULL) return 0;
	char buffer[256];								  // line buffer
	int gpuc = 0;									  // gpu counter
	while (fgets(buffer, sizeof(buffer), cache_fp)) { // reading the file
		sscanf(buffer, "user=%99[^\n]", user_info->user);
		sscanf(buffer, "host=%99[^\n]", user_info->host);
		sscanf(buffer, "version_name=%99[^\n]", user_info->os_name);
		sscanf(buffer, "host_model=%99[^\n]", user_info->model);
		sscanf(buffer, "kernel=%99[^\n]", user_info->kernel);
		sscanf(buffer, "cpu=%99[^\n]", user_info->cpu_model);
		if (sscanf(buffer, "gpu=%99[^\n]", user_info->gpu_model[gpuc]) != 0)
			gpuc++;
		sscanf(buffer, "screen_width=%i", &user_info->screen_width);
		sscanf(buffer, "screen_height=%i", &user_info->screen_height);
		sscanf(buffer, "shell=%99[^\n]", user_info->shell);
		sscanf(buffer, "pkgs=%i", &user_info->pkgs);
		sscanf(buffer, "pkgman_name=%99[^\n]", user_info->pkgman_name);
	}

	fclose(cache_fp);
	return 1;
}

/*
This replaces all terms in a string with another term.
replace("Hello World!", "World", "everyone")
This returns "Hello everyone!".
*/
void replace(char* original, char* search, char* replacer) {
	char* ch;
	char buffer[1024];
	while ((ch = strstr(original, search))) {
		ch = strstr(original, search);
		strncpy(buffer, original, ch - original);
		buffer[ch - original] = 0;
		sprintf(buffer + (ch - original), "%s%s", replacer, ch + strlen(search));
		original[0] = 0;
		strcpy(original, buffer);
	}
}

/*
This replaces all terms in a string with another term, case insensitive
replace("Hello wOrLd!", "WoRlD", "everyone")
This returns "Hello everyone!".
*/
void replace_ignorecase(char* original, char* search, char* replacer) {
	char* ch;
	char buffer[1024];
#ifdef _WIN32
	#define strcasestr(o, s) strstr(o, s)
#endif
	while ((ch = strcasestr(original, search))) {
		strncpy(buffer, original, ch - original);
		buffer[ch - original] = 0;
		sprintf(buffer + (ch - original), "%s%s", replacer, ch + strlen(search));
		original[0] = 0;
		strcpy(original, buffer);
	}
}

// prints logo (as ascii art) of the given system.
void print_ascii(struct info* user_info) {
	printf("\n");
	FILE* file;
	char ascii_file[1024];
	// First tries to get ascii art file from local directory. Useful for debugging
	sprintf(ascii_file, "./res/ascii/%s.txt", user_info->os_name);
	file = fopen(ascii_file, "r");
	if (!file) { // if the file does not exist in the local directory, open it from the installation directory
		if (strcmp(user_info->os_name, "android") == 0)
			sprintf(ascii_file, "/data/data/com.termux/files/usr/lib/uwufetch/ascii/%s.txt", user_info->os_name);
		else if (strcmp(user_info->os_name, "macos") == 0)
			sprintf(ascii_file, "/usr/local/lib/uwufetch/ascii/%s.txt", user_info->os_name);
		else
			sprintf(ascii_file, "/usr/lib/uwufetch/ascii/%s.txt", user_info->os_name);

		file = fopen(ascii_file, "r");
		if (!file) {
			// Prevent infinite loops
			if (strcmp(user_info->os_name, "unknown") == 0) {
				printf("No\nunknown\nascii\nfile\n\n\n\n");
				return;
			}
			sprintf(user_info->os_name, "unknown"); // current os is not supported
			return print_ascii(user_info);
		}
	}
	char buffer[256];				   // line buffer
	while (fgets(buffer, 256, file)) { // replacing color placecholders
		replace(buffer, "{NORMAL}", NORMAL);
		replace(buffer, "{BOLD}", BOLD);
		replace(buffer, "{BLACK}", BLACK);
		replace(buffer, "{RED}", RED);
		replace(buffer, "{GREEN}", GREEN);
		replace(buffer, "{SPRING_GREEN}", SPRING_GREEN);
		replace(buffer, "{YELLOW}", YELLOW);
		replace(buffer, "{BLUE}", BLUE);
		replace(buffer, "{MAGENTA}", MAGENTA);
		replace(buffer, "{CYAN}", CYAN);
		replace(buffer, "{WHITE}", WHITE);
		replace(buffer, "{PINK}", PINK);
		replace(buffer, "{LPINK}", LPINK);
		replace(buffer, "{BLOCK}", BLOCK_CHAR);
		replace(buffer, "{BLOCK_VERTICAL}", BLOCK_CHAR);
		replace(buffer, "{BACKGROUND_GREEN}", "\e[0;42m");
		replace(buffer, "{BACKGROUND_RED}", "\e[0;41m");
		replace(buffer, "{BACKGROUND_WHITE}", "\e[0;47m");
		printf("%s", buffer); // print the line after setting the color
	}
	// Always set color to NORMAL, so there's no need to do this in every ascii file.
	printf(NORMAL);
	fclose(file);
}

// prints the info after reading the cache file and returns the count of printed lines
int print_cache(struct configuration* config_flags, struct info* user_info) {
#ifndef __APPLE__
	#ifndef _WIN32
		#ifndef __FREEBSD__
		sysinfo(&user_info->sys); // to get uptime
		#endif
	#endif
	FILE* meminfo;

	#ifdef __FREEBSD__
	meminfo = popen("LANG=EN_us freecolor -om 2> /dev/null", "r"); // free alternative
	#else
	// getting memory info from /proc/meminfo: https://github.com/KittyKatt/screenFetch/issues/386#issuecomment-249312716
	meminfo = fopen("/proc/meminfo", "r"); // popen("LANG=EN_us free -m 2> /dev/null", "r"); // get ram info with free
	#endif
	// brackets are here to restrict the access to this int variables, which are temporary
	{
		char buffer[256];
		int memtotal = 0, shmem = 0, memfree = 0, buffers = 0, cached = 0, sreclaimable = 0;
		while (fgets(buffer, sizeof(buffer), meminfo)) {
			sscanf(buffer, "MemTotal:       %d", &memtotal);
			sscanf(buffer, "Shmem:             %d", &shmem);
			sscanf(buffer, "MemFree:        %d", &memfree);
			sscanf(buffer, "Buffers:          %d", &buffers);
			sscanf(buffer, "Cached:          %d", &cached);
			sscanf(buffer, "SReclaimable:     %d", &sreclaimable);
		}
		user_info->ram_total = memtotal / 1024;
		user_info->ram_used	 = ((memtotal + shmem) - (memfree + buffers + cached + sreclaimable)) / 1024;
	}

	// char line[256];
	// while (fgets(line, sizeof(line), meminfo)) // old way to get ram usage that uses the "free" command
	// 	// free command prints like this: "Mem:" total     used    free shared    buff/cache      available
	// 	sscanf(line, "Mem: %d %d", &user_info->ram_total, &user_info->ram_used);
	fclose(meminfo);
#elif defined(_WIN32)
	FILE* mem_used_fp;
	mem_used_fp = popen("wmic OS GET FreePhysicalMemory", "r"); // free does not exist for windows
	char mem_used_ch[2137];
	printf("\n\n\n\\\n");
	while (fgets(mem_used_ch, sizeof(mem_used_ch), mem_used_fp) != NULL) printf("%s\n", mem_used_ch);
	pclose(mem_used_fp);
	int mem_used = atoi(mem_used_ch);
	ram_used	 = mem_used / 1024;

#else // __APPLE__

	// Used ram
	FILE *mem_wired_fp, *mem_active_fp, *mem_compressed_fp;
	mem_wired_fp	  = popen("vm_stat | awk '/wired/ { printf $4 }' | cut -d '.' -f 1", "r");
	mem_active_fp	  = popen("vm_stat | awk '/active/ { printf $3 }' | cut -d '.' -f 1", "r");
	mem_compressed_fp = popen("vm_stat | awk '/occupied/ { printf $5 }' | cut -d '.' -f 1", "r");
	char mem_wired_ch[2137], mem_active_ch[2137], mem_compressed_ch[2137];
	while (fgets(mem_wired_ch, sizeof(mem_wired_ch), mem_wired_fp) != NULL)
		while (fgets(mem_active_ch, sizeof(mem_active_ch), mem_active_fp) != NULL)
			while (fgets(mem_compressed_ch, sizeof(mem_compressed_ch), mem_compressed_fp) != NULL)
				;

	pclose(mem_wired_fp);
	pclose(mem_active_fp);
	pclose(mem_compressed_fp);

	int mem_wired	   = atoi(mem_wired_ch);
	int mem_active	   = atoi(mem_active_ch);
	int mem_compressed = atoi(mem_compressed_ch);

	// Total ram
	sysctlbyname("hw.memsize", &mem_buffer, &mem_buffer_len, NULL, 0);
	user_info->ram_used = ((mem_wired + mem_active + mem_compressed) * 4 / 1024);

#endif // __APPLE__
	print_ascii(user_info);
	return print_info(config_flags, user_info);
}

// truncates the given string
void truncate_str(char* string, int target_width) {
	char arr[target_width];
	for (int i = 0; i < target_width; i++) arr[i] = string[i];
	string = arr;
}

// remove square brackets (for gpu names)
void remove_brackets(char* str) {
	int i = 0, j = 0;
	while (i < (int)strlen(str))
		if (str[i] == '[' || str[i] == ']')
			for (j = i; j < (int)strlen(str); j++) str[j] = str[j + 1];
		else
			i++;
}

#ifdef _WIN32
// windows sucks and hasn't a strstep, so I copied one from
// https://stackoverflow.com/questions/8512958/is-there-a-windows-variant-of-strsep-function
char* strsep(char** stringp, const char* delim) {
	char* start = *stringp;
	char* p;
	p = (start != NULL) ? strpbrk(start, delim) : NULL;
	if (p == NULL)
		*stringp = NULL;
	else {
		*p		 = '\0';
		*stringp = p + 1;
	}
	return start;
}
#endif

// uwufies kernel name
void uwu_kernel(char* kernel) {
#define KERNEL_TO_UWU(str, original, uwufied) \
	if (strcmp(str, original) == 0) sprintf(str, "%s", uwufied)

	char* temp_kernel = kernel;
	char* token;
	char splitted[16][128] = {};

	int count = 0;
	while ((token = strsep(&temp_kernel, " "))) { // split kernel name
		strcpy(splitted[count], token);
		count++;
	}
	strcpy(kernel, "");
	for (int i = 0; i < 16; i++) {
		// replace kernel name with uwufied version
		KERNEL_TO_UWU(splitted[i], "Linux", "Linuwu");
		else KERNEL_TO_UWU(splitted[i], "linux", "linuwu");
		else KERNEL_TO_UWU(splitted[i], "alpine", "Nyalpine");
		else KERNEL_TO_UWU(splitted[i], "amogos", "AmogOwOS");
		else KERNEL_TO_UWU(splitted[i], "arch", "Nyarch Linuwu");
		else KERNEL_TO_UWU(splitted[i], "artix", "Nyartix Linuwu");
		else KERNEL_TO_UWU(splitted[i], "debian", "Debinyan");
		else KERNEL_TO_UWU(splitted[i], "endeavouros", "endeavOwO");
		else KERNEL_TO_UWU(splitted[i], "EndeavourOS", "endeavOwO");
		else KERNEL_TO_UWU(splitted[i], "fedora", "Fedowa");
		else KERNEL_TO_UWU(splitted[i], "gentoo", "GentOwO");
		else KERNEL_TO_UWU(splitted[i], "gnu", "gnUwU");
		else KERNEL_TO_UWU(splitted[i], "guix", "gnUwU gUwUix");
		else KERNEL_TO_UWU(splitted[i], "linuxmint", "LinUWU Miwint");
		else KERNEL_TO_UWU(splitted[i], "manjaro", "Myanjawo");
		else KERNEL_TO_UWU(splitted[i], "manjaro-arm", "Myanjawo AWM");
		else KERNEL_TO_UWU(splitted[i], "neon", "KDE NeOwOn");
		else KERNEL_TO_UWU(splitted[i], "nixos", "nixOwOs");
		else KERNEL_TO_UWU(splitted[i], "opensuse-leap", "OwOpenSUSE Leap");
		else KERNEL_TO_UWU(splitted[i], "opensuse-tumbleweed", "OwOpenSUSE Tumbleweed");
		else KERNEL_TO_UWU(splitted[i], "pop", "PopOwOS");
		else KERNEL_TO_UWU(splitted[i], "raspbian", "RaspNyan");
		else KERNEL_TO_UWU(splitted[i], "slackware", "Swackwawe");
		else KERNEL_TO_UWU(splitted[i], "solus", "sOwOlus");
		else KERNEL_TO_UWU(splitted[i], "ubuntu", "Uwuntu");
		else KERNEL_TO_UWU(splitted[i], "void", "OwOid");
		else KERNEL_TO_UWU(splitted[i], "xerolinux", "xuwulinux");
		else KERNEL_TO_UWU(splitted[i], "android", "Nyandroid"); // android at the end because it could be not considered as an actual distribution of gnu/linux

		// BSD
		else KERNEL_TO_UWU(splitted[i], "freebsd", "FweeBSD");
		else KERNEL_TO_UWU(splitted[i], "openbsd", "OwOpenBSD");

		// Apple family
		else KERNEL_TO_UWU(splitted[i], "macos", "macOwOS");
		else KERNEL_TO_UWU(splitted[i], "ios", "iOwOS");

		// Windows
		else KERNEL_TO_UWU(splitted[i], "windows", "WinyandOwOws");

		if (i != 0) strcat(kernel, " ");
		strcat(kernel, splitted[i]);
	}
#undef KERNEL_TO_UWU
}

void uwu_hw(char* hwname) {
#define HW_TO_UWU(original, uwuified) \
	replace_ignorecase(hwname, original, uwuified);
	HW_TO_UWU("lenovo", "LenOwO")
	HW_TO_UWU("cpu", "CC\bPUwU"); // for some reasons this caused a segfault, using a \b (backspace) char fixes it
	HW_TO_UWU("gpu", "GG\bPUwU")
	HW_TO_UWU("graphics", "Gwaphics")
	HW_TO_UWU("corporation", "COwOpowation")
	HW_TO_UWU("nvidia", "NyaVIDIA")
	HW_TO_UWU("mobile", "Mwobile")
	HW_TO_UWU("intel", "Inteww")
	HW_TO_UWU("radeon", "Radenyan")
	HW_TO_UWU("geforce", "GeFOwOce")
	HW_TO_UWU("raspberry", "Nyasberry")
	HW_TO_UWU("broadcom", "Bwoadcom")
	HW_TO_UWU("motorola", "MotOwOwa")
	HW_TO_UWU("proliant", "ProLinyant")
	HW_TO_UWU("poweredge", "POwOwEdge")
	HW_TO_UWU("apple", "Nyaa\bpple")
	HW_TO_UWU("electronic", "ElectrOwOnic")
#undef HW_TO_UWU
}

// get all necessary info
#ifdef _WIN32
struct info get_info(struct configuration* config_flags)
#else
struct info get_info()
#endif
{
	struct info user_info = {0};
	char buffer[256]; // line buffer

// get terminal width used to truncate long names
#ifndef _WIN32
	ioctl(STDOUT_FILENO, TIOCGWINSZ, &user_info.win);
	user_info.target_width = user_info.win.ws_col - 30;
#else  // _WIN32
	GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi);
	user_info.ws_col  = csbi.srWindow.Right - csbi.srWindow.Left - 29;
	user_info.ws_rows = csbi.srWindow.Bottom - csbi.srWindow.Top + 1;
#endif // _WIN32

	// os version, cpu and board info
	FILE* os_release = fopen("/etc/os-release", "r"); // os name file
#ifndef __FREEBSD__
	FILE* cpuinfo = fopen("/proc/cpuinfo", "r"); // cpu name file for not-freebsd systems
#else
	FILE* cpuinfo	  = popen("sysctl -a | egrep -i 'hw.model'", "r"); // cpu name command for freebsd
#endif
	// trying to get some kind of information about the name of the computer (hopefully a product full name)
	FILE* model_fp /* = fopen("/sys/devices/virtual/dmi/id/product_version", "r") */; // trying to get product version
	// if (!model_fp) model_fp = fopen("/sys/devices/virtual/dmi/id/product_name", "r"); // trying to get product name
	// if (!model_fp) model_fp = fopen("/sys/devices/virtual/dmi/id/board_name", "r");	  // trying to get motherboard name
	char model_filename[3][256] = {"/sys/devices/virtual/dmi/id/product_version",
								   "/sys/devices/virtual/dmi/id/product_name",
								   "/sys/devices/virtual/dmi/id/board_name"};

	char tmp_model[3][256]; // temporary variable to store the contents of all 3 files
	int longest_model = 0, best_len = 0, currentlen = 0;
	for (int i = 0; i < 3; i++) {
		// read file
		model_fp = fopen(model_filename[i], "r");
		if (model_fp) {
			fgets(tmp_model[i], 256, model_fp);
			tmp_model[i][strlen(tmp_model[i]) - 1] = '\0';
			fclose(model_fp);
		}
		// choose the file with the longest name
		currentlen = strlen(tmp_model[i]);
		if (currentlen > best_len) {
			best_len	  = currentlen;
			longest_model = i;
		}
	}
	sprintf(user_info.model, "%s", tmp_model[longest_model]); // read model name
#ifdef _WIN32
	// all the previous files obviously did not exist on windows
	model_fp = popen("wmic computersystem get model", "r");
	while (fgets(buffer, sizeof(buffer), model_fp)) {
		if (strstr(buffer, "Model") != 0)
			continue;
		else {
			sprintf(user_info.model, "%s", buffer);
			user_info.model[strlen(user_info.model) - 2] = '\0';
			break;
		}
	}
#elif defined(__FREEBSD__) || defined(__APPLE__)
	#if defined(__FREEBSD__)
		#define HOSTCTL "hw.hv_vendor"
	#elif defined(__APPLE__)
		#define HOSTCTL "hw.model"
	#endif
	model_fp		  = popen("sysctl -a " HOSTCTL, "r");
	while (fgets(buffer, sizeof(buffer), model_fp))
		if (sscanf(buffer, HOSTCTL ": %[^\n]", user_info.model)) break;
#endif				  // _WIN32
	if (os_release) { // get normal vars if os_release exists
		while (fgets(buffer, sizeof(buffer), os_release) && !(sscanf(buffer, "\nID=\"%s\"", user_info.os_name) || sscanf(buffer, "\nID=%s", user_info.os_name)))
			;
		// sometimes for some reason sscanf reads the last '\"' too
		int os_name_len = strlen(user_info.os_name);
		if (user_info.os_name[os_name_len - 1] == '\"') {
			user_info.os_name[os_name_len - 1] = '\0';
		}
		/* trying to detect amogos because in its os-release file ID value is just "debian",
		will be removed when amogos will have an os-release file with ID=amogos */
		if (strcmp(user_info.os_name, "debian") == 0 || strcmp(user_info.os_name, "raspbian") == 0) {
			DIR* amogos_plymouth = opendir("/usr/share/plymouth/themes/amogos");
			if (amogos_plymouth) {
				closedir(amogos_plymouth);
				sprintf(user_info.os_name, "amogos");
			}
		}
		/* if (model_fp) { // what the fuck is this? I don't remember writing this code
			while (fgets(buffer, sizeof(buffer), model_fp) && !(sscanf(buffer, "%[^\n]", user_info.model)))
				;
			char version[32];
			while (fgets(buffer, sizeof(buffer), model_fp)) {
				if (sscanf(buffer, "%[^\n]", version)) {
					strcat(user_info.model, " ");
					strcat(user_info.model, version);
					break;
				}
			}
		} */

		// getting cpu name
		while (fgets(buffer, sizeof(buffer), cpuinfo)) {
#ifdef __FREEBSD__
			if (sscanf(buffer, "hw.model: %[^\n]", user_info.cpu_model))
			    break;
#else
			if (sscanf(buffer, "model name    : %[^\n]", user_info.cpu_model))
				break;
#endif // __FREEBSD__
	}
		// getting username
		char* tmp_user = getenv("USER");
		if (tmp_user == NULL)
			sprintf(user_info.user, "%s", "");
		else
			sprintf(user_info.user, "%s", tmp_user);
		fclose(os_release);
	} else { // try for android vars, next for Apple var, or unknown system
		// android
		DIR* system_app		 = opendir("/system/app/");
		DIR* system_priv_app = opendir("/system/priv-app/");
		DIR* library		 = opendir("/Library/");
		if (system_app && system_priv_app) {
			closedir(system_app);
			closedir(system_priv_app);
			sprintf(user_info.os_name, "android");
			// username
			FILE* whoami = popen("whoami", "r");
			if (fscanf(whoami, "%s", user_info.user) == 3)
				sprintf(user_info.user, "unknown");
			pclose(whoami);
			// model name
			model_fp = popen("getprop ro.product.model", "r");
			while (fgets(buffer, sizeof(buffer), model_fp) && !sscanf(buffer, "%[^\n]", user_info.model))
				;
#ifndef __FREEBSD__
			while (fgets(buffer, sizeof(buffer), cpuinfo) && !sscanf(buffer, "Hardware        : %[^\n]", user_info.cpu_model))
				;
#endif
		} else if (library) { // Apple
			closedir(library);
#ifdef __APPLE__
			sysctlbyname("machdep.cpu.brand_string", &cpu_buffer, &cpu_buffer_len, NULL, 0); // cpu name
	#ifndef __IPHONE__
			sprintf(user_info.os_name, "macos");
	#else
			sprintf(user_info.os_name, "ios");
	#endif
			sprintf(user_info.cpu_model, "%s", cpu_buffer);
#endif
		} else
			sprintf(user_info.os_name, "unknown"); // if no option before is working, the system is unknown
	}
#ifndef __FREEBSD__
	fclose(cpuinfo);
#endif
#ifndef _WIN32
	gethostname(user_info.host, 256);  // hostname
	char* tmp_shell = getenv("SHELL"); // shell name
	if (tmp_shell == NULL)
		sprintf(user_info.shell, "%s", "");
	else
		sprintf(user_info.shell, "%s", tmp_shell);
	if (strlen(user_info.shell) > 16) // android shell was too long, this works only for termux
		memmove(&user_info.shell, &user_info.shell[27], strlen(user_info.shell));
#else  // if _WIN32
	// cpu name
	cpuinfo = popen("wmic cpu get caption", "r");
	while (fgets(buffer, sizeof(buffer), cpuinfo)) {
		if (strstr(buffer, "Caption") != 0)
			continue;
		else {
			sprintf(user_info.cpu_model, "%s", buffer);
			user_info.cpu_model[strlen(user_info.cpu_model) - 2] = '\0';
			break;
		}
	}
	// username
	FILE* user_host_fp = popen("wmic computersystem get username", "r");
	while (fgets(buffer, sizeof(buffer), user_host_fp)) {
		if (strstr(buffer, "UserName") != 0)
			continue;
		else {
			sscanf(buffer, "%[^\\]%s", user_info.host, user_info.user);
			memmove(user_info.user, user_info.user + 1,
					sizeof(user_info.user) - 1);
			break;
		}
	}
	// powershell version
	FILE* shell_fp = popen("powershell $PSVersionTable", "r");
	sprintf(user_info.shell, "PowerShell ");
	char tmp_shell[64];
	while (fgets(buffer, sizeof(buffer), shell_fp) && sscanf(buffer, "PSVersion                      %s", tmp_shell) == 0)
		;
	strcat(user_info.shell, tmp_shell);
#endif // _WIN32
	truncate_str(user_info.cpu_model, user_info.target_width);

// system resources
#ifndef _WIN32
	uname(&user_info.sys_var);
#endif // _WIN32
#ifndef __APPLE__
	#ifndef __FREEBSD__
		#ifndef _WIN32
	sysinfo(&user_info.sys); // somehow this function has to be called again in print_info()
		#else
	GetSystemInfo(&user_info.sys);
		#endif
	#endif
#endif

#ifndef _WIN32
	truncate_str(user_info.sys_var.release, user_info.target_width);
	sprintf(user_info.kernel, "%s %s %s", user_info.sys_var.sysname, user_info.sys_var.release, user_info.sys_var.machine); // kernel name
	truncate_str(user_info.kernel, user_info.target_width);
#else  // _WIN32
	// os name and windows version
	sprintf(user_info.os_name, "windows");
	FILE* kernel_fp = popen("wmic computersystem get systemtype", "r");
	while (fgets(buffer, sizeof(buffer), kernel_fp)) {
		if (strstr(buffer, "SystemType") != 0)
			continue;
		else {
			sprintf(user_info.kernel, "%s", buffer);
			user_info.kernel[strlen(user_info.kernel) - 2] = '\0';
			break;
		}
	}
	if (kernel_fp) pclose(kernel_fp);
#endif // _WIN32

// ram
#ifndef __APPLE__
	#ifdef _WIN32
	FILE* mem_used_fp	   = popen("wmic os get freevirtualmemory", "r");	   // free memory
	FILE* mem_total_fp	   = popen("wmic os get totalvirtualmemorysize", "r"); // total memory
	char mem_used_ch[2137] = {0}, mem_total_ch[2137] = {0};

	while (fgets(mem_total_ch, sizeof(mem_total_ch), mem_total_fp) != NULL) {
		if (strstr(mem_total_ch, "TotalVirtualMemorySize") != 0)
			continue;
		else if (strstr(mem_total_ch, "  ") == 0)
			continue;
		else
			user_info.ram_total = atoi(mem_total_ch) / 1024;
	}
	while (fgets(mem_used_ch, sizeof(mem_used_ch), mem_used_fp) != NULL) {
		if (strstr(mem_used_ch, "FreeVirtualMemory") != 0)
			continue;
		else if (strstr(mem_used_ch, "  ") == 0)
			continue;
		else
			user_info.ram_used =
				user_info.ram_total - (atoi(mem_used_ch) / 1024);
	}
	pclose(mem_used_fp);
	pclose(mem_total_fp);
	#else // if not _WIN32
	FILE* meminfo;

		#ifdef __FREEBSD__
	meminfo = popen("LANG=EN_us freecolor -om 2> /dev/null", "r"); // free alternative for freebsd
		#else
	// getting memory info from /proc/meminfo: https://github.com/KittyKatt/screenFetch/issues/386#issuecomment-249312716
	meminfo = fopen("/proc/meminfo", "r"); // popen("LANG=EN_us free -m 2> /dev/null", "r"); // get ram info with free
		#endif
	// brackets are here to restrict the access to this int variables, which are temporary
	{
		int memtotal = 0, shmem = 0, memfree = 0, buffers = 0, cached = 0, sreclaimable = 0;
		while (fgets(buffer, sizeof(buffer), meminfo)) {
			sscanf(buffer, "MemTotal:       %d", &memtotal);
			sscanf(buffer, "Shmem:             %d", &shmem);
			sscanf(buffer, "MemFree:        %d", &memfree);
			sscanf(buffer, "Buffers:          %d", &buffers);
			sscanf(buffer, "Cached:          %d", &cached);
			sscanf(buffer, "SReclaimable:     %d", &sreclaimable);
		}
		user_info.ram_total = memtotal / 1024;
		user_info.ram_used	= ((memtotal + shmem) - (memfree + buffers + cached + sreclaimable)) / 1024;
	}

	// while (fgets(buffer, sizeof(buffer), meminfo)) // old way to get ram usage that uses the "free" command
	// 	// free command prints like this: "Mem:" total     used    free shared    buff/cache      available
	// 	sscanf(buffer, "Mem: %d %d", &user_info.ram_total, &user_info.ram_used);
	fclose(meminfo);
	#endif
#else // if __APPLE__
	// Used
	FILE *mem_wired_fp, *mem_active_fp, *mem_compressed_fp;
	mem_wired_fp	  = popen("vm_stat | awk '/wired/ { printf $4 }' | cut -d '.' -f 1", "r");
	mem_active_fp	  = popen("vm_stat | awk '/active/ { printf $3 }' | cut -d '.' -f 1", "r");
	mem_compressed_fp = popen("vm_stat | awk '/occupied/ { printf $5 }' | cut -d '.' -f 1", "r");
	char mem_wired_ch[2137], mem_active_ch[2137], mem_compressed_ch[2137];
	while (fgets(mem_wired_ch, sizeof(mem_wired_ch), mem_wired_fp) != NULL)
		while (fgets(mem_active_ch, sizeof(mem_active_ch), mem_active_fp) != NULL)
			while (fgets(mem_compressed_ch, sizeof(mem_compressed_ch), mem_compressed_fp) != NULL)
				;

	pclose(mem_wired_fp);
	pclose(mem_active_fp);
	pclose(mem_compressed_fp);

	int mem_wired	   = atoi(mem_wired_ch);
	int mem_active	   = atoi(mem_active_ch);
	int mem_compressed = atoi(mem_compressed_ch);

	// Total
	sysctlbyname("hw.memsize", &mem_buffer, &mem_buffer_len, NULL, 0);
	user_info.ram_used	= ((mem_wired + mem_active + mem_compressed) * 4 / 1024);
	user_info.ram_total = mem_buffer / 1024 / 1024;
#endif

	// gpus
	int gpuc = 0; // gpu counter
#ifndef _WIN32
	setenv("LANG", "en_US", 1); // force language to english
#endif
	FILE* gpu;
#ifndef _WIN32
	gpu = popen("lshw -class display 2> /dev/null", "r");

	// add all gpus to the array gpu_model
	while (fgets(buffer, sizeof(buffer), gpu))
		if (sscanf(buffer, "    product: %[^\n]", user_info.gpu_model[gpuc]))
			gpuc++;
#endif

	if (strlen(user_info.gpu_model[0]) < 2) {
		// get gpus with lspci command
		if (strcmp(user_info.os_name, "android") != 0) {
#ifndef __APPLE__
	#ifdef _WIN32
			gpu = popen("wmic PATH Win32_VideoController GET Name", "r");
	#else
			gpu = popen("lspci -mm 2> /dev/null | grep \"VGA\" | awk -F '\"' '{print $4 $5 $6}'", "r");
	#endif
#else
			gpu = popen("system_profiler SPDisplaysDataType | awk -F ': ' '/Chipset Model: /{ print $2 }'", "r");
#endif
		} else
			gpu = popen("getprop ro.hardware.vulkan 2> /dev/null", "r"); // for android
	}

	// get all the gpus
	while (fgets(buffer, sizeof(buffer), gpu)) {
		// windows
		if (strstr(buffer, "Name") || (strlen(buffer) == 2))
			continue;
		else if (sscanf(buffer, "%[^\n]", user_info.gpu_model[gpuc]))
			gpuc++;
	}
	fclose(gpu);

	// format gpu names
	for (int i = 0; i < gpuc; i++) {
		remove_brackets(user_info.gpu_model[i]);
		truncate_str(user_info.gpu_model[i], user_info.target_width);
	}

// Resolution
#ifndef _WIN32
	FILE* resolution = popen("xwininfo -root 2> /dev/null | grep -E 'Width|Height'", "r");
	while (fgets(buffer, sizeof(buffer), resolution)) {
		sscanf(buffer, "  Width: %d", &user_info.screen_width);
		sscanf(buffer, "  Height: %d", &user_info.screen_height);
	}
#endif
	if (strcmp(user_info.os_name, "windows")) MOVE_CURSOR = "\033[21C"; // to print windows logo on not windows systems

// package count
#ifdef _WIN32
	user_info.pkgs = pkgman(&user_info, config_flags);
#else  // _WIN32
	user_info.pkgs = pkgman(&user_info);
#endif // _WIN32

	// uwufy info
	uwu_kernel(user_info.kernel);
	for (int i = 0; user_info.gpu_model[i][0]; i++) uwu_hw(user_info.gpu_model[i]);
	uwu_hw(user_info.cpu_model);
	uwu_hw(user_info.model);
	return user_info;
}

/* prints distribution list
distributions are listed by distribution branch
to make the output easier to understand by the user.*/
void list(char* arg) {
	printf("%s -d <options>\n"
		   "  Available distributions:\n"
		   "    %sArch linux %sbased:\n"
		   "      %sarch, arcolinux, %sartix, endeavouros %smanjaro, "
		   "manjaro-arm, %sxerolinux\n\n"
		   "    %sDebian/%sUbuntu %sbased:\n"
		   "      %samogos, debian, %slinuxmint, neon %spop, %sraspbian "
		   "%subuntu\n\n"
		   "    %sBSD %sbased:\n"
		   "      %sfreebsd, %sopenbsd, %sm%sa%sc%so%ss, %sios\n\n"
		   "    %sOther/spare distributions:\n"
		   "      %salpine, %sfedora, %sgentoo, %sslackware, %ssolus, %svoid, "
		   "opensuse-leap, android, %sgnu, guix, %swindows, %sunknown\n\n",
		   arg, BLUE, NORMAL, BLUE, MAGENTA, GREEN, BLUE,					// Arch based colors
		   RED, YELLOW, NORMAL, RED, GREEN, BLUE, RED, YELLOW,				// Debian based colors
		   RED, NORMAL, RED, YELLOW, GREEN, YELLOW, RED, PINK, BLUE, WHITE, // BSD/Apple colors
		   NORMAL, BLUE, BLUE, PINK, MAGENTA, WHITE, GREEN, YELLOW, BLUE,
		   WHITE); // Other/spare distributions colors
}

// prints the usage
void usage(char* arg) {
	printf("Usage: %s <args>\n"
		   "    -a, --ascii         prints logo as ascii text (default)\n"
		   "    -c  --config        use custom config path\n"
		   "    -d, --distro        lets you choose the logo to print\n"
		   "    -h, --help          prints this help page\n"
#ifndef __IPHONE__
		   "    -i, --image         prints logo as image and use a custom image if provided\n"
		   "                        %sworks in most terminals\n"
#else
		   "    -i, --image         prints logo as image and use a custom image if provided\n"
		   "                        %sdisabled under iOS\n"
#endif
		   "                        read README.md for more info%s\n"
		   "    -l, --list          lists all supported distributions\n"
		   "    -w, --write-cache   writes to the cache file (~/.cache/uwufetch.cache)\n"
		   "    using the cache     set $UWUFETCH_CACHE_ENABLED to TRUE, true or 1\n",
		   arg,
#ifndef __IPHONE__
		   BLUE,
#else
		   RED,
#endif
		   NORMAL);
}

// the main function is on the bottom of the file to avoid double function declarations
int main(int argc, char* argv[]) {
	char* cache_env = getenv("UWUFETCH_CACHE_ENABLED"); // getting cache env variable
	struct configuration config_flags;
	struct info user_info = {0};
	if (cache_env != NULL) { // if cache env variable is set, read itz value
		int cache_enabled = 0;
		char buffer[128];

		sscanf(cache_env, "%4[TRUEtrue1]", buffer);
		cache_enabled = (strcmp(buffer, "true") == 0 || strcmp(buffer, "TRUE") == 0 || strcmp(buffer, "1") == 0); // enable the cache if necessary
		if (cache_enabled) {
			// if no cache file found write to it
			if (!read_cache(&user_info)) {
#ifdef _WIN32
				user_info = get_info(&config_flags);
#else
				user_info = get_info();
#endif
				write_cache(&user_info);
			}
			config_flags = parse_config(&user_info); // reading the config
			if (print_cache(&config_flags, &user_info) < 7)
				printf("\033[3B");
			return 0;
		}
	}
#ifdef _WIN32
	// packages disabled by default because chocolatey is too slow
	config_flags.show_pkgs = 0;
#endif

	int opt = 0;
	static struct option long_options[] =
		{{"ascii", no_argument, NULL, 'a'},
		 {"config", required_argument, NULL, 'c'},
		 // {"cache", no_argument, NULL, 'C'}, // using an environment variable is not a good idea, maybe some time in the future, uwufetch will use a command line option
		 {"distro", required_argument, NULL, 'd'},
		 {"write-cache", no_argument, NULL, 'w'},
		 {"help", no_argument, NULL, 'h'},
		 {"image", optional_argument, NULL, 'i'},
		 {"list", no_argument, NULL, 'l'},
		 {NULL, 0, NULL, 0}};

#ifdef _WIN32
	user_info = get_info(&config_flags); // get the info to modify it with cmdline options
#else
	user_info = get_info();
#endif
	config_flags = parse_config(&user_info); // same as user_info

	// reading cmdline options
	while ((opt = getopt_long(argc, argv, "ac:d:hi::lw", long_options, NULL)) != -1) {
		switch (opt) {
		case 'a': // set ascii logo as output
			config_flags.ascii_image_flag = 0;
			break;
		case 'c': // set the config directory
			user_info.config_directory = optarg;
			break;
		case 'd': // set the distribution name
			if (optarg) sprintf(user_info.os_name, "%s", optarg);
			break;
		case 'h':
			usage(argv[0]);
			return 0;
		case 'i': // set ascii logo as output
			config_flags.ascii_image_flag = 1;
			if (!optarg && argv[optind] != NULL && argv[optind][0] != '-') // set default image name
				sprintf(user_info.image_name, "%s", argv[optind++]);
			else if (optarg) // set user-defined image name
				sprintf(user_info.image_name, "%s", optarg);
			break;
		case 'l':
			list(argv[0]);
			return 0;
		case 'w':
			write_cache(&user_info);
			if (print_cache(&config_flags, &user_info) < 7)
				printf("\033[3B");
			return 0;
		default:
			break;
		}
	}
	if ((argc == 1 && config_flags.ascii_image_flag == 0) || (argc > 1 && config_flags.ascii_image_flag == 0))
		print_ascii(&user_info);
	else if (config_flags.ascii_image_flag == 1)
		print_image(&user_info);

	// if the number of printed lines is too small, move the cursor down
	if (print_info(&config_flags, &user_info) < 7)
		printf("\033[3B");
	return 0;
}