#include <stdio.h>
#include <gtk/gtk.h>

#include "dive.h"
#include "divelist.h"
#include "display.h"

/* libdivecomputer */
#include <device.h>
#include <suunto.h>
#include <reefnet.h>
#include <uwatec.h>
#include <oceanic.h>
#include <mares.h>
#include <hw.h>
#include <cressi.h>
#include <zeagle.h>
#include <atomics.h>
#include <utils.h>

/*
 * I'd love to do a while-loop here for pending events, but
 * that seems to screw up with the dive computer reading timing.
 *
 * I may need to spawn a new thread to do the computer
 * reading stuff..
 */
static int run_gtk_mainloop(void)
{
	return gtk_main_iteration_do(0);
}

static void error(const char *fmt, ...)
{
	va_list args;
	GError *error;

	va_start(args, fmt);
	error = g_error_new_valist(
		g_quark_from_string("divelog"),
		DIVE_ERROR_PARSE, fmt, args);
	va_end(args);
	report_error(error);
	g_error_free(error);
}

typedef struct device_data_t {
	device_type_t type;
	const char *name, *devname;
	GtkWidget *progressbar;
	device_devinfo_t devinfo;
	device_clock_t clock;
} device_data_t;

static parser_status_t create_parser(device_data_t *devdata, parser_t **parser)
{
	switch (devdata->type) {
	case DEVICE_TYPE_SUUNTO_SOLUTION:
		return suunto_solution_parser_create(parser);

	case DEVICE_TYPE_SUUNTO_EON:
		return suunto_eon_parser_create(parser, 0);

	case DEVICE_TYPE_SUUNTO_VYPER:
		if (devdata->devinfo.model == 0x01)
			return suunto_eon_parser_create(parser, 1);
		return suunto_vyper_parser_create(parser);

	case DEVICE_TYPE_SUUNTO_VYPER2:
	case DEVICE_TYPE_SUUNTO_D9:
		return suunto_d9_parser_create(parser, devdata->devinfo.model);

	case DEVICE_TYPE_UWATEC_ALADIN:
	case DEVICE_TYPE_UWATEC_MEMOMOUSE:
		return uwatec_memomouse_parser_create(parser, devdata->clock.devtime, devdata->clock.systime);

	case DEVICE_TYPE_UWATEC_SMART:
		return uwatec_smart_parser_create(parser, devdata->devinfo.model, devdata->clock.devtime, devdata->clock.systime);

	case DEVICE_TYPE_REEFNET_SENSUS:
		return reefnet_sensus_parser_create(parser, devdata->clock.devtime, devdata->clock.systime);

	case DEVICE_TYPE_REEFNET_SENSUSPRO:
		return reefnet_sensuspro_parser_create(parser, devdata->clock.devtime, devdata->clock.systime);

	case DEVICE_TYPE_REEFNET_SENSUSULTRA:
		return reefnet_sensusultra_parser_create(parser, devdata->clock.devtime, devdata->clock.systime);

	case DEVICE_TYPE_OCEANIC_VTPRO:
		return oceanic_vtpro_parser_create(parser);

	case DEVICE_TYPE_OCEANIC_VEO250:
		return oceanic_veo250_parser_create(parser, devdata->devinfo.model);

	case DEVICE_TYPE_OCEANIC_ATOM2:
		return oceanic_atom2_parser_create(parser, devdata->devinfo.model);

	case DEVICE_TYPE_MARES_NEMO:
	case DEVICE_TYPE_MARES_PUCK:
		return mares_nemo_parser_create(parser, devdata->devinfo.model);

	case DEVICE_TYPE_MARES_ICONHD:
		return mares_iconhd_parser_create(parser);

	case DEVICE_TYPE_HW_OSTC:
		return hw_ostc_parser_create(parser);

	case DEVICE_TYPE_CRESSI_EDY:
	case DEVICE_TYPE_ZEAGLE_N2ITION3:
		return cressi_edy_parser_create(parser, devdata->devinfo.model);

	case DEVICE_TYPE_ATOMICS_COBALT:
		return atomics_cobalt_parser_create(parser);

	default:
		return PARSER_STATUS_ERROR;
	}
}

static int parse_gasmixes(struct dive *dive, parser_t *parser, int ngases)
{
	int i;

	for (i = 0; i < ngases; i++) {
		int rc;
		gasmix_t gasmix = {0};

		rc = parser_get_field(parser, FIELD_TYPE_GASMIX, i, &gasmix);
		if (rc != PARSER_STATUS_SUCCESS && rc != PARSER_STATUS_UNSUPPORTED)
			return rc;

		if (i >= MAX_CYLINDERS)
			continue;

		dive->cylinder[i].gasmix.o2.permille = gasmix.oxygen * 1000 + 0.5;
		dive->cylinder[i].gasmix.he.permille = gasmix.helium * 1000 + 0.5;
	}
	return PARSER_STATUS_SUCCESS;
}

void
sample_cb(parser_sample_type_t type, parser_sample_value_t value, void *userdata)
{
	int i;
	static const char *events[] = {
		"none", "deco", "rbt", "ascent", "ceiling", "workload", "transmitter",
		"violation", "bookmark", "surface", "safety stop", "gaschange",
		"safety stop (voluntary)", "safety stop (mandatory)", "deepstop",
		"ceiling (safety stop)", "unknown", "divetime", "maxdepth",
		"OLF", "PO2", "airtime", "rgbm", "heading", "tissue level warning"};
	struct dive **divep = userdata;
	struct dive *dive = *divep;
	struct sample *sample;

	/*
	 * We fill in the "previous" sample - except for SAMPLE_TYPE_TIME,
	 * which creates a new one.
	 */
	sample = dive->samples ? dive->sample+dive->samples-1 : NULL;

	switch (type) {
	case SAMPLE_TYPE_TIME:
		sample = prepare_sample(divep);
		sample->time.seconds = value.time;
		finish_sample(*divep, sample);
		break;
	case SAMPLE_TYPE_DEPTH:
		sample->depth.mm = value.depth * 1000 + 0.5;
		break;
	case SAMPLE_TYPE_PRESSURE:
		sample->cylinderindex = value.pressure.tank;
		sample->cylinderpressure.mbar = value.pressure.value * 1000 + 0.5;
		break;
	case SAMPLE_TYPE_TEMPERATURE:
		sample->temperature.mkelvin = (value.temperature + 273.15) * 1000 + 0.5;
		break;
	case SAMPLE_TYPE_EVENT:
		printf("   <event type=\"%u\" time=\"%u\" flags=\"%u\" value=\"%u\">%s</event>\n",
			value.event.type, value.event.time, value.event.flags, value.event.value, events[value.event.type]);
		break;
	case SAMPLE_TYPE_RBT:
		printf("   <rbt>%u</rbt>\n", value.rbt);
		break;
	case SAMPLE_TYPE_HEARTBEAT:
		printf("   <heartbeat>%u</heartbeat>\n", value.heartbeat);
		break;
	case SAMPLE_TYPE_BEARING:
		printf("   <bearing>%u</bearing>\n", value.bearing);
		break;
	case SAMPLE_TYPE_VENDOR:
		printf("   <vendor type=\"%u\" size=\"%u\">", value.vendor.type, value.vendor.size);
		for (i = 0; i < value.vendor.size; ++i)
			printf("%02X", ((unsigned char *) value.vendor.data)[i]);
		printf("</vendor>\n");
		break;
	default:
		break;
	}
}


static int parse_samples(struct dive **divep, parser_t *parser)
{
	// Parse the sample data.
	printf("Parsing the sample data.\n");
	return parser_samples_foreach(parser, sample_cb, divep);
}

static int dive_cb(const unsigned char *data, unsigned int size,
	const unsigned char *fingerprint, unsigned int fsize,
	void *userdata)
{
	int rc;
	parser_t *parser = NULL;
	device_data_t *devdata = userdata;
	dc_datetime_t dt = {0};
	struct tm tm;
	struct dive *dive;

	/* Christ, this is hacky */
	run_gtk_mainloop();

	rc = create_parser(devdata, &parser);
	if (rc != PARSER_STATUS_SUCCESS) {
		error("Unable to create parser for %s", devdata->name);
		return rc;
	}

	rc = parser_set_data(parser, data, size);
	if (rc != PARSER_STATUS_SUCCESS) {
		error("Error registering the data.");
		parser_destroy(parser);
		return rc;
	}

	dive = alloc_dive();
	rc = parser_get_datetime(parser, &dt);
	if (rc != PARSER_STATUS_SUCCESS && rc != PARSER_STATUS_UNSUPPORTED) {
		error("Error parsing the datetime.");
		parser_destroy (parser);
		return rc;
	}

	tm.tm_year = dt.year;
	tm.tm_mon = dt.month-1;
	tm.tm_mday = dt.day;
	tm.tm_hour = dt.hour;
	tm.tm_min = dt.minute;
	tm.tm_sec = dt.second;
	dive->when = utc_mktime(&tm);

	// Parse the divetime.
	printf("Parsing the divetime.\n");
	unsigned int divetime = 0;
	rc = parser_get_field (parser, FIELD_TYPE_DIVETIME, 0, &divetime);
	if (rc != PARSER_STATUS_SUCCESS && rc != PARSER_STATUS_UNSUPPORTED) {
		error("Error parsing the divetime.");
		parser_destroy(parser);
		return rc;
	}
	dive->duration.seconds = divetime;

	// Parse the maxdepth.
	printf("Parsing the maxdepth.\n");
	double maxdepth = 0.0;
	rc = parser_get_field(parser, FIELD_TYPE_MAXDEPTH, 0, &maxdepth);
	if (rc != PARSER_STATUS_SUCCESS && rc != PARSER_STATUS_UNSUPPORTED) {
		error("Error parsing the maxdepth.");
		parser_destroy(parser);
		return rc;
	}
	dive->maxdepth.mm = maxdepth * 1000 + 0.5;

	// Parse the gas mixes.
	printf("Parsing the gas mixes.\n");
	unsigned int ngases = 0;
	rc = parser_get_field(parser, FIELD_TYPE_GASMIX_COUNT, 0, &ngases);
	if (rc != PARSER_STATUS_SUCCESS && rc != PARSER_STATUS_UNSUPPORTED) {
		error("Error parsing the gas mix count.");
		parser_destroy(parser);
		return rc;
	}

	rc = parse_gasmixes(dive, parser, ngases);
	if (rc != PARSER_STATUS_SUCCESS) {
		error("Error parsing the gas mix.");
		parser_destroy(parser);
		return rc;
	}

	// Initialize the sample data.
	rc = parse_samples(&dive, parser);
	if (rc != PARSER_STATUS_SUCCESS) {
		error("Error parsing the samples.");
		parser_destroy(parser);
		return rc;
	}
	record_dive(dive);

	parser_destroy(parser);
	return 1;
}


static device_status_t import_device_data(device_t *device, device_data_t *devicedata)
{
	return device_foreach(device, dive_cb, devicedata);
}

static device_status_t device_open(const char *devname,
	device_type_t type,
	device_t **device)
{
	switch (type) {
	case DEVICE_TYPE_SUUNTO_SOLUTION:
		return suunto_solution_device_open(device, devname);

	case DEVICE_TYPE_SUUNTO_EON:
		return suunto_eon_device_open(device, devname);

	case DEVICE_TYPE_SUUNTO_VYPER:
		return suunto_vyper_device_open(device, devname);

	case DEVICE_TYPE_SUUNTO_VYPER2:
		return suunto_vyper2_device_open(device, devname);

	case DEVICE_TYPE_SUUNTO_D9:
		return suunto_d9_device_open(device, devname);

	case DEVICE_TYPE_UWATEC_ALADIN:
		return uwatec_aladin_device_open(device, devname);

	case DEVICE_TYPE_UWATEC_MEMOMOUSE:
		return uwatec_memomouse_device_open(device, devname);

	case DEVICE_TYPE_UWATEC_SMART:
		return uwatec_smart_device_open(device);

	case DEVICE_TYPE_REEFNET_SENSUS:
		return reefnet_sensus_device_open(device, devname);

	case DEVICE_TYPE_REEFNET_SENSUSPRO:
		return reefnet_sensuspro_device_open(device, devname);

	case DEVICE_TYPE_REEFNET_SENSUSULTRA:
		return reefnet_sensusultra_device_open(device, devname);

	case DEVICE_TYPE_OCEANIC_VTPRO:
		return oceanic_vtpro_device_open(device, devname);

	case DEVICE_TYPE_OCEANIC_VEO250:
		return oceanic_veo250_device_open(device, devname);

	case DEVICE_TYPE_OCEANIC_ATOM2:
		return oceanic_atom2_device_open(device, devname);

	case DEVICE_TYPE_MARES_NEMO:
		return mares_nemo_device_open(device, devname);

	case DEVICE_TYPE_MARES_PUCK:
		return mares_puck_device_open(device, devname);

	case DEVICE_TYPE_MARES_ICONHD:
		return mares_iconhd_device_open(device, devname);

	case DEVICE_TYPE_HW_OSTC:
		return hw_ostc_device_open(device, devname);

	case DEVICE_TYPE_CRESSI_EDY:
		return cressi_edy_device_open(device, devname);

	case DEVICE_TYPE_ZEAGLE_N2ITION3:
		return zeagle_n2ition3_device_open(device, devname);

	case DEVICE_TYPE_ATOMICS_COBALT:
		return atomics_cobalt_device_open(device);

	default:
		return DEVICE_STATUS_ERROR;
	}
}

static void
event_cb(device_t *device, device_event_t event, const void *data, void *userdata)
{
	const device_progress_t *progress = (device_progress_t *) data;
	const device_devinfo_t *devinfo = (device_devinfo_t *) data;
	const device_clock_t *clock = (device_clock_t *) data;
	device_data_t *devdata = (device_data_t *) userdata;

	/* Christ, this is hacky */
	run_gtk_mainloop();

	switch (event) {
	case DEVICE_EVENT_WAITING:
		printf("Event: waiting for user action\n");
		break;
	case DEVICE_EVENT_PROGRESS:
		gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(devdata->progressbar),
			(double) progress->current / (double) progress->maximum);
		break;
	case DEVICE_EVENT_DEVINFO:
		devdata->devinfo = *devinfo;
		printf("Event: model=%u (0x%08x), firmware=%u (0x%08x), serial=%u (0x%08x)\n",
			devinfo->model, devinfo->model,
			devinfo->firmware, devinfo->firmware,
			devinfo->serial, devinfo->serial);
		break;
	case DEVICE_EVENT_CLOCK:
		devdata->clock = *clock;
		printf("Event: systime=%lld, devtime=%u\n",
			clock->systime, clock->devtime);
		break;
	default:
		break;
	}
}

static int
cancel_cb(void *userdata)
{
	return run_gtk_mainloop();
}

static void do_import(device_data_t *data)
{
	/* FIXME! Needs user input! */
	const char *devname = "/dev/ttyUSB0";
	device_t *device = NULL;
	device_status_t rc;

	rc = device_open(devname, data->type, &device);
	if (rc != DEVICE_STATUS_SUCCESS) {
		error("Unable to open %s (%s)", data->name, data->devname);
		return;
	}

	// Register the event handler.
	int events = DEVICE_EVENT_WAITING | DEVICE_EVENT_PROGRESS | DEVICE_EVENT_DEVINFO | DEVICE_EVENT_CLOCK;
	rc = device_set_events(device, events, event_cb, data);
	if (rc != DEVICE_STATUS_SUCCESS) {
		error("Error registering the event handler.");
		device_close(device);
		return;
	}

	// Register the cancellation handler.
	rc = device_set_cancel(device, cancel_cb, data);
	if (rc != DEVICE_STATUS_SUCCESS) {
		error("Error registering the cancellation handler.");
		device_close(device);
		return;
	}

	rc = import_device_data(device, data);
	if (rc != DEVICE_STATUS_SUCCESS) {
		error("Dive data import error");
		device_close(device);
		return;
	}

	device_close(device);
}

/*
 * Taken from 'example.c' in libdivecomputer.
 *
 * I really wish there was some way to just have
 * libdivecomputer tell us what devices it supports,
 * rather than have the application have to know..
 */
struct device_list {
	const char *name;
	device_type_t type;
} device_list[] = {
	{ "Suunto Solution",	DEVICE_TYPE_SUUNTO_SOLUTION },
	{ "Suunto Eon",		DEVICE_TYPE_SUUNTO_EON },
	{ "Suunto Vyper",	DEVICE_TYPE_SUUNTO_VYPER },
	{ "Suunto Vyper Air",	DEVICE_TYPE_SUUNTO_VYPER2 },
	{ "Suunto D9",		DEVICE_TYPE_SUUNTO_D9 },
	{ "Uwatec Aladin",	DEVICE_TYPE_UWATEC_ALADIN },
	{ "Uwatec Memo Mouse",	DEVICE_TYPE_UWATEC_MEMOMOUSE },
	{ "Uwatec Smart",	DEVICE_TYPE_UWATEC_SMART },
	{ "ReefNet Sensus",	DEVICE_TYPE_REEFNET_SENSUS },
	{ "ReefNet Sensus Pro",	DEVICE_TYPE_REEFNET_SENSUSPRO },
	{ "ReefNet Sensus Ultra",DEVICE_TYPE_REEFNET_SENSUSULTRA },
	{ "Oceanic VT Pro",	DEVICE_TYPE_OCEANIC_VTPRO },
	{ "Oceanic Veo250",	DEVICE_TYPE_OCEANIC_VEO250 },
	{ "Oceanic Atom 2",	DEVICE_TYPE_OCEANIC_ATOM2 },
	{ "Mares Nemo",		DEVICE_TYPE_MARES_NEMO },
	{ "Mares Puck",		DEVICE_TYPE_MARES_PUCK },
	{ "Mares Icon HD",	DEVICE_TYPE_MARES_ICONHD },
	{ "OSTC",		DEVICE_TYPE_HW_OSTC },
	{ "Cressi Edy",		DEVICE_TYPE_CRESSI_EDY },
	{ "Zeagle N2iTiON 3",	DEVICE_TYPE_ZEAGLE_N2ITION3 },
	{ "Atomics Cobalt",	DEVICE_TYPE_ATOMICS_COBALT },
	{ NULL }
};

static void fill_computer_list(GtkListStore *store)
{
	GtkTreeIter iter;
	struct device_list *list = device_list;

	for (list = device_list ; list->name ; list++) {
		gtk_list_store_append(store, &iter);
		gtk_list_store_set(store, &iter,
			0, list->name,
			1, list->type,
			-1);
	}
}

static GtkComboBox *dive_computer_selector(GtkWidget *dialog)
{
	GtkWidget *hbox, *combo_box;
	GtkListStore *model;
	GtkCellRenderer *renderer;

	hbox = gtk_hbox_new(FALSE, 6);
	gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), hbox, FALSE, FALSE, 3);

	model = gtk_list_store_new(2, G_TYPE_STRING, G_TYPE_INT);
	fill_computer_list(model);

	combo_box = gtk_combo_box_new_with_model(GTK_TREE_MODEL(model));
	gtk_box_pack_start(GTK_BOX(hbox), combo_box, FALSE, TRUE, 3);

	renderer = gtk_cell_renderer_text_new();
	gtk_cell_layout_pack_start(GTK_CELL_LAYOUT(combo_box), renderer, TRUE);
	gtk_cell_layout_set_attributes(GTK_CELL_LAYOUT(combo_box), renderer, "text", 0, NULL);

	return GTK_COMBO_BOX(combo_box);
}

void import_dialog(GtkWidget *w, gpointer data)
{
	int result;
	GtkWidget *dialog, *hbox;
	GtkComboBox *computer;
	device_data_t devicedata = {
		.devname = "/dev/ttyUSB0",
	};

	dialog = gtk_dialog_new_with_buttons("Import from dive computer",
		GTK_WINDOW(main_window),
		GTK_DIALOG_DESTROY_WITH_PARENT,
		GTK_STOCK_OK, GTK_RESPONSE_ACCEPT,
		GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT,
		NULL);

	computer = dive_computer_selector(dialog);

	hbox = gtk_hbox_new(FALSE, 6);
	gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), hbox, FALSE, TRUE, 3);
	devicedata.progressbar = gtk_progress_bar_new();
	gtk_container_add(GTK_CONTAINER(hbox), devicedata.progressbar);

	gtk_widget_show_all(dialog);
	result = gtk_dialog_run(GTK_DIALOG(dialog));
	switch (result) {
		int type;
		GtkTreeIter iter;
		GtkTreeModel *model;
		const char *comp;
	case GTK_RESPONSE_ACCEPT:
		if (!gtk_combo_box_get_active_iter(computer, &iter))
			break;
		model = gtk_combo_box_get_model(computer);
		gtk_tree_model_get(model, &iter,
			0, &comp,
			1, &type,
			-1);
		devicedata.type = type;
		devicedata.name = comp;
		do_import(&devicedata);
		break;
	default:
		break;
	}
	gtk_widget_destroy(dialog);

	report_dives();
	dive_list_update_dives(dive_list);
}