/*
 * This file is part of the coreinfo project.
 *
 * Copyright (C) 2008 Advanced Micro Devices, Inc.
 *
 * 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; version 2 of the License.
 *
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#include "coreinfo.h"

#define SCREEN_Y 25
#define SCREEN_X 80

#define KEY_ESC 27

extern struct coreinfo_module cpuinfo_module;
extern struct coreinfo_module pci_module;
extern struct coreinfo_module coreboot_module;
extern struct coreinfo_module nvram_module;
extern struct coreinfo_module bootlog_module;
extern struct coreinfo_module lar_module;

struct coreinfo_module *system_modules[] = {
#ifdef CONFIG_MODULE_CPUINFO
	&cpuinfo_module,
#endif
#ifdef CONFIG_MODULE_PCI
	&pci_module,
#endif
#ifdef CONFIG_MODULE_NVRAM
	&nvram_module,
#endif
};

struct coreinfo_module *coreboot_modules[] = {
#ifdef CONFIG_MODULE_COREBOOT
	&coreboot_module,
#endif
#ifdef CONFIG_MODULE_BOOTLOG
	&bootlog_module,
#endif
#ifdef CONFIG_MODULE_LAR
	&lar_module
#endif
};

struct coreinfo_cat {
	char name[15];
	int cur;
	int count;
	struct coreinfo_module **modules;
} categories[] = {
	{
		.name = "System",
		.modules = system_modules,
		.count = ARRAY_SIZE(system_modules),
	},
	{
		.name = "Coreboot",
		.modules = coreboot_modules,
		.count = ARRAY_SIZE(coreboot_modules),
	}
};


static WINDOW *modwin;
static WINDOW *menuwin;

static int curwin;

void print_module_title(WINDOW *win, const char *title)
{
	int i;

	wattrset(win, COLOR_PAIR(2));
	mvwprintw(win, 0, 1, title);

	wmove(win, 1, 1);

	for (i = 0; i < 78; i++)
		waddch(win, '\304');
}

static void print_submenu(struct coreinfo_cat *cat)
{
	int i, j;
	char menu[80];
	char *ptr = menu;

	wmove(menuwin, 0, 0);

	for (j = 0; j < SCREEN_X; j++)
		waddch(menuwin, ' ');

	if (!cat->count)
		return;

	for (i = 0; i < cat->count; i++)
		ptr += sprintf(ptr, "[%c: %s] ", 'A' + i, cat->modules[i]->name);

	mvwprintw(menuwin, 0, 0, menu);
}

#ifdef CONFIG_SHOW_DATE_TIME
static void print_time_and_date(void)
{
	struct tm tm;

	while(nvram_updating())
		mdelay(10);

	rtc_read_clock(&tm);

	mvwprintw(menuwin, 0, 57, "%02d/%02d/%04d - %02d:%02d:%02d",
		tm.tm_mon, tm.tm_mday, 1900+tm.tm_year, tm.tm_hour,
		tm.tm_min, tm.tm_sec);
}
#endif

static void print_menu(void)
{
	int i, j;
	char menu[80];
	char *ptr = menu;

	wmove(menuwin, 1, 0);

	for (j = 0; j < SCREEN_X; j++)
		waddch(menuwin, ' ');

	for (i = 0; i < ARRAY_SIZE(categories); i++) {
		if (categories[i].count == 0)
			continue;

		ptr += sprintf(ptr, "F%d: %s ", i + 1, categories[i].name);
	}

	mvwprintw(menuwin, 1, 0, menu);

#ifdef CONFIG_SHOW_DATE_TIME
	print_time_and_date();
#endif
}

static void center(int row, const char *str)
{
	int len = strlen(str);
	int j;

	wmove(stdscr, row, 0);

	for (j = 0; j < SCREEN_X; j++)
		waddch(stdscr, ' ');

	mvprintw(row, (SCREEN_X - len) / 2, str);
}

/* FIXME: Currently unused. */
#if 0
static void header(int row, const char *str)
{
	char buf[SCREEN_X];
	char *ptr = buf;
	int i;
	int len = strlen(str) + 4;

	for (i = 0; i < (SCREEN_X - len) / 2; i++)
		ptr += sprintf(ptr, "=");

	ptr += sprintf(ptr, "[ %s ]", str);


	for (i = ((SCREEN_X - len) / 2) + len; i < SCREEN_X; i++)
		ptr += sprintf(ptr, "=");

	mvprintw(row, 0, buf);
}
#endif

static void redraw_module(struct coreinfo_cat *cat)
{
	if (cat->count == 0)
		return;

	wclear(modwin);
	cat->modules[cat->cur]->redraw(modwin);
	wrefresh(modwin);
}

static void handle_category_key(struct coreinfo_cat *cat, int key)
{
	if (key >= 'a' && key <= 'z') {
		int index = key - 'a';

		if (index < cat->count) {

		cat->cur = index;
			redraw_module(cat);
			return;
		}
	}

	if (cat->count && cat->modules[cat->cur]->handle) {
		if (cat->modules[cat->cur]->handle(key))
			redraw_module(cat);
	}
}

static void loop(void)
{
	int key;

	center(0, "coreinfo v0.1");
	refresh();

	print_menu();
	print_submenu(&categories[curwin]);
	redraw_module(&categories[curwin]);

	halfdelay(10);

	while (1) {
#ifdef CONFIG_SHOW_DATE_TIME
		print_time_and_date();
		wrefresh(menuwin);
#endif

		key = getch();

		if (key == ERR)
			continue;

		if (key >= KEY_F(1) && key <= KEY_F(9)) {
			unsigned char ch = key - KEY_F(1);

			if (ch <= ARRAY_SIZE(categories)) {
				if (ch == ARRAY_SIZE(categories))
					continue;
				if (categories[ch].count == 0)
					continue;

				curwin = ch;
				print_submenu(&categories[curwin]);
				redraw_module(&categories[curwin]);
				continue;
			}
		}

		if (key == KEY_ESC)
			return;

		handle_category_key(&categories[curwin], key);
	}
}

int main(void)
{
	int i, j;

	initscr();

	init_pair(1, COLOR_WHITE, COLOR_GREEN);
	init_pair(2, COLOR_BLACK, COLOR_WHITE);
	init_pair(3, COLOR_WHITE, COLOR_WHITE);

	modwin = newwin(SCREEN_Y - 3, SCREEN_X, 1, 0);
	menuwin = newwin(2, SCREEN_X, SCREEN_Y - 2, 0);

	wattrset(stdscr, COLOR_PAIR(1) | A_BOLD);
	wattrset(modwin, COLOR_PAIR(2));
	wattrset(menuwin, COLOR_PAIR(1) | A_BOLD);

	for (i = 0; i < SCREEN_Y - 1; i++) {
		wmove(modwin, i - 1, 0);

		for (j = 0; j < SCREEN_X; j++)
			waddch(modwin, ' ');
	}

	wrefresh(modwin);

	for (i = 0; i < ARRAY_SIZE(categories); i++) {
		for(j = 0; j < categories[i].count; j++)
			categories[i].modules[j]->init();

	}

	loop();

	return 0;
}

PAYLOAD_INFO(name,"coreinfo");
PAYLOAD_INFO(listname,"System Information");
PAYLOAD_INFO(desc,"Display information about the system");