/*******************************************************************************
 * Copyright (C) 2010, Linaro Limited.
 *
 * This file is part of PowerDebug.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Amit Arora <amit.arora@linaro.org> (IBM Corporation)
 *       - initial API and implementation
 *******************************************************************************/

#include <getopt.h>
#include "powerdebug.h"

int dump;
int highlighted_row;
int selectedwindow = -1;
double ticktime = 10.0;  /* in seconds */

char *win_names[TOTAL_FEATURE_WINS] = {
	"Clocks",
	"Regulators",
	"Sensors"
};

void usage(void)
{
	printf("Usage: powerdebug [OPTIONS]\n");
	printf("\n");
	printf("powerdebug -d [ -r ] [ -s ] [ -c [ -p <clock-name> ] ] "
		"[ -v ]\n");
	printf("powerdebug [ -r | -s | -c ]\n");
	printf("  -r, --regulator 	Show regulator information\n");
	printf("  -s, --sensor		Show sensor information\n");
	printf("  -c, --clock		Show clock information\n");
	printf("  -p, --findparents	Show all parents for a particular"
		" clock\n");
	printf("  -t, --time		Set ticktime in seconds (eg. 10.0)\n");
	printf("  -d, --dump		Dump information once (no refresh)\n");
	printf("  -v, --verbose		Verbose mode (use with -r and/or"
		" -s)\n");
	printf("  -V, --version		Show Version\n");
	printf("  -h, --help 		Help\n");

	exit(0);
}

void version()
{
	printf("powerdebug version %s\n", VERSION);
	exit(0);
}

int main(int argc, char **argv)
{
	int c, i;
	int firsttime[TOTAL_FEATURE_WINS];
	int enter_hit = 0, verbose = 0, findparent_ncurses = 0, refreshwin = 0;
	int regulators = 0, sensors = 0, clocks = 0, findparent = 0;
	char clkarg[64], clkname_str[64];

	for (i = 0; i < TOTAL_FEATURE_WINS; i++)
		firsttime[i] = 1;

	/*
	 * Options:
	 * -r, --regulator      : regulator
	 * -s, --sensor	 	: sensors
	 * -c, --clock	  	: clocks
	 * -p, --findparents    : clockname whose parents have to be found
	 * -t, --time		: ticktime
	 * -d, --dump		: dump
	 * -v, --verbose	: verbose
	 * -V, --version	: version
	 * -h, --help		: help
	 * no option / default : show usage!
	 */

	while (1) {
		int optindex = 0;
		static struct option long_options[] = {
			{"regulator", 0, 0, 'r'},
			{"sensor", 0, 0, 's'},
			{"clock", 0, 0, 'c'},
			{"findparents", 1, 0, 'p'},
			{"time", 1, 0, 't'},
			{"dump", 0, 0, 'd'},
			{"verbose", 0, 0, 'v'},
			{"version", 0, 0, 'V'},
			{"help", 0, 0, 'h'},
			{0, 0, 0, 0}
		};

		c = getopt_long(argc, argv, "rscp:t:dvVh", long_options, &optindex);
		if (c == -1)
			break;

		switch (c) {
		case 'r':
			regulators = 1;
			selectedwindow = REGULATOR;
			break;
		case 's':
			sensors = 1;
			selectedwindow = SENSOR;
			break;
		case 'c':
			clocks = 1;
			selectedwindow = CLOCK;
			break;
		case 'p':
			findparent = 1;
			strcpy(clkarg, optarg);
			break;
		case 't':
			ticktime = strtod(optarg, NULL);
			break;
		case 'd':
			dump = 1;
			break;
		case 'v':
			verbose = 1;
			break;
		case 'V':
			version();
			break;
		case 'h':
			usage();
			break;
		case '?':
			fprintf (stderr, "%s: Unknown option %c'.\n",
				argv[0], optopt);
			exit(1);
		default:
			usage();
			break;
		}
	}

	if (dump && !(regulators || clocks || sensors)) {
		//fprintf(stderr, "Dump mode (-d) supported only with -c, -r "
		//		"or -s ..\n");
		//usage();
		// By Default lets show everything we have!
		regulators = clocks = sensors = 1;
	}

	if (findparent && (!clocks || !dump)) {
		fprintf(stderr, "-p option passed without -c and -d."
			" Exiting...\n");
		usage();
	}

	if (!dump && selectedwindow == -1)
		selectedwindow = CLOCK;

	init_regulator_ds();

	while (1) {
		int key = 0;
		struct timeval tval;
		fd_set readfds;

		if (!dump) {
			if (firsttime[0])
				init_curses();
			create_windows();
			show_header();
		}

		if (regulators || selectedwindow == REGULATOR) {
			read_regulator_info();
			if (!dump) {
				create_selectedwindow();
				show_regulator_info(verbose);
			}
			else
				print_regulator_info(verbose);
		}

		if (clocks || selectedwindow == CLOCK) {
			int ret = 0;
			if (firsttime[CLOCK]) {
				ret = init_clock_details();
				if (!ret)
					firsttime[CLOCK] = 0;
				strcpy(clkname_str, "");
			}
			if (!ret && !dump) {
				int hrow;

				create_selectedwindow();
				if (!findparent_ncurses) {
					int command = 0;

					if (enter_hit)
						command = CLOCK_SELECTED;
					if (refreshwin)
						command = REFRESH_WINDOW;
					hrow = read_and_print_clock_info(
						verbose,
						highlighted_row,
						command);
					highlighted_row = hrow;
					enter_hit = 0;
				} else
					find_parents_for_clock(clkname_str,
							enter_hit);
			}
			if (!ret && dump) {
				if (findparent)
					read_and_dump_clock_info_one(clkarg);
				else
					read_and_dump_clock_info(verbose);
			}
		}

		if (sensors || selectedwindow == SENSOR) {
			if (!dump) {
				create_selectedwindow();
				print_sensor_header();
			} else
				read_and_print_sensor_info(verbose);
		}

		if (dump)
			break;

		FD_ZERO(&readfds);
		FD_SET(0, &readfds);
		tval.tv_sec = ticktime;
		tval.tv_usec = (ticktime - tval.tv_sec) * 1000000;

		key = select(1, &readfds, NULL, NULL, &tval);

		if (key)  {
			char keychar;
			int keystroke = getch();
			int oldselectedwin = selectedwindow;

			if (keystroke == EOF)
				exit(0);

			if (keystroke == KEY_RIGHT || keystroke == 9)
				selectedwindow++;

			if (keystroke == KEY_LEFT || keystroke == 353)
				selectedwindow--;

			if (selectedwindow >= TOTAL_FEATURE_WINS)
				selectedwindow = 0;

			if (selectedwindow < 0)
				selectedwindow = TOTAL_FEATURE_WINS - 1;

			if (selectedwindow == CLOCK) {
				if (keystroke == KEY_DOWN)
					highlighted_row++;
				if (keystroke == KEY_UP && highlighted_row > 0)
					highlighted_row--;
				if (keystroke == 47)
					findparent_ncurses = 1;

				if ((keystroke == 27 || oldselectedwin !=
						selectedwindow) && findparent_ncurses) {
					findparent_ncurses = 0;
					clkname_str[0] = '\0';
				}

				if (findparent_ncurses && keystroke != 13) {
					int len = strlen(clkname_str);
					char str[2];

					if (keystroke == 263) {
						if (len > 0)
							len--;

						clkname_str[len] = '\0';
					} else {
						if (strlen(clkname_str) ||
							keystroke != '/') {
							str[0] = keystroke;
							str[1] = '\0';
							if (len < 63)
								strcat(clkname_str,
									str);
						}
					}
				}
			}

			keychar = toupper(keystroke);
//#define DEBUG
#ifdef DEBUG
			killall_windows(1); fini_curses();
			printf("key entered %d:%c\n", keystroke, keychar);
			exit(1);
#endif

			if (keystroke == 13)
				enter_hit = 1;

			if (keychar == 'Q' && !findparent_ncurses)
				exit(0);
			if (keychar == 'R') {
				refreshwin = 1;
				ticktime = 3;
			} else
				refreshwin = 0;
		}
	}
	exit(0);
}