// SPDX-License-Identifier: GPL-2.0
#include "subsurfacestartup.h"
#include "subsurface-string.h"
#include "version.h"
#include <stdbool.h>
#include <string.h>
#include "errorhelper.h"
#include "gettext.h"
#include "qthelper.h"
#include "git-access.h"
#include "libdivecomputer/version.h"

extern void show_computer_list();

struct preferences prefs, git_prefs;
struct preferences default_prefs = {
	.cloud_base_url = "https://cloud.subsurface-divelog.org/",
	.units = SI_UNITS,
	.unit_system = METRIC,
	.coordinates_traditional = true,
	.pp_graphs = {
		.po2 = false,
		.pn2 = false,
		.phe = false,
		.po2_threshold_min = 0.16,
		.po2_threshold_max = 1.6,
		.pn2_threshold = 4.0,
		.phe_threshold = 13.0,
	},
	.mod = false,
	.modpO2 = 1.6,
	.ead = false,
	.hrgraph = false,
	.percentagegraph = false,
	.dcceiling = true,
	.redceiling = false,
	.calcceiling = false,
	.calcceiling3m = false,
	.calcndltts = false,
	.decoinfo = true,
	.gflow = 30,
	.gfhigh = 75,
	.animation_speed = 500,
	.gf_low_at_maxdepth = false,
	.show_ccr_setpoint = false,
	.show_ccr_sensors = false,
	.show_scr_ocpo2 = false,
	.font_size = -1,
	.mobile_scale = 1.0,
	.display_invalid_dives = false,
	.show_sac = false,
	.display_unused_tanks = false,
	.display_default_tank_infos = true,
	.show_average_depth = true,
	.show_icd = false,
	.ascrate75 = 9000 / 60,
	.ascrate50 = 9000 / 60,
	.ascratestops = 9000 / 60,
	.ascratelast6m = 9000 / 60,
	.descrate = 18000 / 60,
	.sacfactor = 400,
	.problemsolvingtime = 4,
	.bottompo2 = 1400,
	.decopo2 = 1600,
	.bestmixend.mm = 30000,
	.doo2breaks = false,
	.dobailout = false,
	.drop_stone_mode = false,
	.switch_at_req_stop = false,
	.min_switch_duration = 60,
	.surface_segment = 0,
	.last_stop = false,
	.verbatim_plan = false,
	.display_runtime = true,
	.display_duration = true,
	.display_transitions = true,
	.display_variations = false,
	.o2narcotic = true,
	.safetystop = true,
	.bottomsac = 20000,
	.decosac = 17000,
	.reserve_gas=40000,
	.o2consumption = 720,
	.pscr_ratio = 100,
	.show_pictures_in_profile = true,
	.tankbar = false,
	.defaultsetpoint = 1100,
	.geocoding = {
		.category = { 0 }
	},
	.locale = {
		.use_system_language = true,
	},
	.planner_deco_mode = BUEHLMANN,
	.vpmb_conservatism = 3,
	.distance_threshold = 100,
	.time_threshold = 300,
#if defined(SUBSURFACE_MOBILE)
	.cloud_timeout = 10,
#else
	.cloud_timeout = 5,
#endif
	.auto_recalculate_thumbnails = true,
	.extract_video_thumbnails = true,
	.extract_video_thumbnails_position = 20,		// The first fifth seems like a reasonable place
};

int quit, force_root, ignore_bt;
#ifdef SUBSURFACE_MOBILE_DESKTOP
char *testqml = NULL;
#endif

const struct units *get_units()
{
	return &prefs.units;
}

/*
 * track whether we switched to importing dives
 */
bool imported = false;

void print_version()
{
	static bool version_printed = false;
	if (version_printed)
		return;
#if defined(SUBSURFACE_DOWNLOADER)
	printf("Subsurface-downloader v%s,\n", subsurface_git_version());
#else
	printf("Subsurface v%s,\n", subsurface_git_version());
#endif
	printf("built with libdivecomputer v%s\n", dc_version(NULL));
	print_qt_versions();
	int git_maj, git_min, git_rev;
	git_libgit2_version(&git_maj, &git_min, &git_rev);
	printf("built with libgit2 %d.%d.%d\n", git_maj, git_min, git_rev);
	version_printed = true;
}

void print_files()
{
	const char *branch = 0;
	const char *remote = 0;
	const char *filename, *local_git;

	printf("\nFile locations:\n\n");
	printf("Cloud email:%s\n", prefs.cloud_storage_email);
	if (!empty_string(prefs.cloud_storage_email) && !empty_string(prefs.cloud_storage_password)) {
		filename = cloud_url();

		is_git_repository(filename, &branch, &remote, true);
	} else {
		/* strdup so the free below works in either case */
		filename = strdup("No valid cloud credentials set.\n");
	}
	if (branch && remote) {
		local_git = get_local_dir(remote, branch);
		printf("Local git storage: %s\n", local_git);
	} else {
		printf("Unable to get local git directory\n");
	}
	printf("Cloud URL: %s\n", filename);
	free((void *)filename);
	char *tmp = hashfile_name_string();
	printf("Image filename table: %s\n", tmp);
	free(tmp);
	tmp = picturedir_string();
	printf("Local picture directory: %s\n\n", tmp);
	free(tmp);
}

static void print_help()
{
	print_version();
	printf("\nUsage: subsurface [options] [logfile ...] [--import logfile ...]");
	printf("\n\noptions include:");
	printf("\n --help|-h             This help text");
	printf("\n --ignore-bt           Don't enable Bluetooth support");
	printf("\n --import logfile ...  Logs before this option is treated as base, everything after is imported");
	printf("\n --verbose|-v          Verbose debug (repeat to increase verbosity)");
	printf("\n --version             Prints current version");
	printf("\n --user=<test>         Choose configuration space for user <test>");
#ifdef SUBSURFACE_MOBILE_DESKTOP
	printf("\n --testqml=<dir>       Use QML files from <dir> instead of QML resources");
#elif SUBSURFACE_DOWNLOADER
	printf("\n --dc-vendor=vendor    Set the dive computer to download from");
	printf("\n --dc-product=product  Set the dive computer to download from");
	printf("\n --device=device       Set the device to download from");
#endif
	printf("\n --cloud-timeout=<nr>  Set timeout for cloud connection (0 < timeout < 60)\n\n");
}

void parse_argument(const char *arg)
{
	const char *p = arg + 1;

	do {
		switch (*p) {
		case 'h':
			print_help();
			exit(0);
		case 'v':
			print_version();
			verbose++;
			continue;
		case 'q':
			quit++;
			continue;
		case '-':
			/* long options with -- */
			/* first test for --user=bla which allows the use of user specific settings */
			if (strncmp(arg, "--user=", sizeof("--user=") - 1) == 0) {
				settings_suffix = strdup(arg + sizeof("--user=") - 1);
				return;
			}
			if (strncmp(arg, "--cloud-timeout=", sizeof("--cloud-timeout=") - 1) == 0) {
				const char *timeout = arg + sizeof("--cloud-timeout=") - 1;
				int to = strtol(timeout, NULL, 10);
				if (0 < to && to < 60)
					default_prefs.cloud_timeout = to;
				return;
			}
			if (strcmp(arg, "--help") == 0) {
				print_help();
				exit(0);
			}
			if (strcmp(arg, "--ignore-bt") == 0) {
				ignore_bt = true;
				return;
			}
			if (strcmp(arg, "--import") == 0) {
				imported = true; /* mark the dives so far as the base, * everything after is imported */
				return;
			}
			if (strcmp(arg, "--verbose") == 0) {
				print_version();
				verbose++;
				return;
			}
			if (strcmp(arg, "--version") == 0) {
				print_version();
				exit(0);
			}
			if (strcmp(arg, "--allow_run_as_root") == 0) {
				++force_root;
				return;
			}
#if SUBSURFACE_DOWNLOADER
			if (strncmp(arg, "--dc-vendor=", sizeof("--dc-vendor=") - 1) == 0) {
				prefs.dive_computer.vendor = strdup(arg + sizeof("--dc-vendor=") - 1);
				return;
			}
			if (strncmp(arg, "--dc-product=", sizeof("--dc-product=") - 1) == 0) {
				prefs.dive_computer.product = strdup(arg + sizeof("--dc-product=") - 1);
				return;
			}
			if (strncmp(arg, "--device=", sizeof("--device=") - 1) == 0) {
				prefs.dive_computer.device = strdup(arg + sizeof("--device=") - 1);
				return;
			}
			if (strncmp(arg, "--list-dc", sizeof("--list-dc") - 1) == 0) {
				show_computer_list();
				exit(0);
			}
#elif SUBSURFACE_MOBILE_DESKTOP
			if (strncmp(arg, "--testqml=", sizeof("--testqml=") - 1) == 0) {
				testqml = malloc(strlen(arg) - sizeof("--testqml=") + 1);
				strcpy(testqml, arg + sizeof("--testqml=") - 1);
				return;
			}
#endif
		/* fallthrough */
		case 'p':
			/* ignore process serial number argument when run as native macosx app */
			if (strncmp(arg, "-psQT_TR_NOOP(", 5) == 0) {
				return;
			}
		/* fallthrough */
		default:
			fprintf(stderr, "Bad argument '%s'\n", arg);
			exit(1);
		}
	} while (*++p);
}

/*
 * Under a POSIX setup, the locale string should have a format
 * like [language[_territory][.codeset][@modifier]].
 *
 * So search for the underscore, and see if the "territory" is
 * US, and turn on imperial units by default.
 *
 * I guess Burma and Liberia should trigger this too. I'm too
 * lazy to look up the territory names, though.
 */
void setup_system_prefs(void)
{
	const char *env;

	subsurface_OS_pref_setup();
	default_prefs.divelist_font = strdup(system_divelist_default_font);
	default_prefs.font_size = system_divelist_default_font_size;
	default_prefs.ffmpeg_executable = strdup("ffmpeg");

#if !defined(SUBSURFACE_MOBILE)
	default_prefs.default_filename = copy_string(system_default_filename());
#endif
	env = getenv("LC_MEASUREMENT");
	if (!env)
		env = getenv("LC_ALL");
	if (!env)
		env = getenv("LANG");
	if (!env)
		return;
	env = strchr(env, '_');
	if (!env)
		return;
	env++;
	if (strncmp(env, "US", 2))
		return;

	default_prefs.units = IMPERIAL_units;
}

/* copy a preferences block, including making copies of all included strings */
void copy_prefs(struct preferences *src, struct preferences *dest)
{
	*dest = *src;
	dest->divelist_font = copy_string(src->divelist_font);
	dest->default_filename = copy_string(src->default_filename);
	dest->default_cylinder = copy_string(src->default_cylinder);
	dest->cloud_base_url = copy_string(src->cloud_base_url);
	dest->cloud_git_url = copy_string(src->cloud_git_url);
	dest->proxy_host = copy_string(src->proxy_host);
	dest->proxy_user = copy_string(src->proxy_user);
	dest->proxy_pass = copy_string(src->proxy_pass);
	dest->time_format = copy_string(src->time_format);
	dest->date_format = copy_string(src->date_format);
	dest->date_format_short = copy_string(src->date_format_short);
	dest->cloud_storage_password = copy_string(src->cloud_storage_password);
	dest->cloud_storage_email = copy_string(src->cloud_storage_email);
	dest->cloud_storage_email_encoded = copy_string(src->cloud_storage_email_encoded);
	dest->ffmpeg_executable = copy_string(src->ffmpeg_executable);
}

/*
 * Free strduped prefs before exit.
 *
 * These are not real leaks but they plug the holes found by eg.
 * valgrind so you can find the real leaks.
 */
void free_prefs(void)
{
	// nop
}