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/*

 * Copyright (C) 2006 Josef Cejka

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * - Redistributions of source code must retain the above copyright

 *   notice, this list of conditions and the following disclaimer.

 * - Redistributions in binary form must reproduce the above copyright

 *   notice, this list of conditions and the following disclaimer in the

 *   documentation and/or other materials provided with the distribution.

 * - The name of the author may not be used to endorse or promote products

 *   derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,

 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#include <kbd.h>

#include <fb.h>

#include <ipc/ipc.h>

#include <ipc/fb.h>

#include <ipc/services.h>

#include <errno.h>

#include <key_buffer.h>

#include <console.h>

//#define CONSOLE_COUNT VFB_CONNECTIONS

#define CONSOLE_COUNT 6

#define NAME "CONSOLE"

typedef struct {

	keybuffer_t keybuffer;

	int client_phone;

	int vfb_number;	/* Not used */

	int vfb_phone;

	int used;

} connection_t;

connection_t connections[CONSOLE_COUNT];

static int find_free_connection() 

{

	int i = 0;

	while (i < CONSOLE_COUNT) {

		if (connections[i].used == 0)

			return i;

		++i;

	}

	return CONSOLE_COUNT;

}

static int find_connection(int client_phone) 

{

	int i = 0;

	while (i < CONSOLE_COUNT) {

		if (connections[i].client_phone == client_phone)

			return i;

		++i;

	}

	return  CONSOLE_COUNT;

}

int main(int argc, char *argv[])

{

	ipcarg_t phonead;

	ipc_call_t call;

	ipc_callid_t callid;

	int kbd_phone, fb_phone;

	ipcarg_t retval, arg1 = 0xdead, arg2 = 0xbeef;

	int i;

	int active_client = 0;

	/* Connect to keyboard driver */

	while ((kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0)) < 0) {

	};

	if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, &phonead) != 0) {

		return -1;

	};

	/* Connect to framebuffer driver */

	for (i = 0; i < CONSOLE_COUNT; i++) {

		connections[i].used = 0;

		keybuffer_init(&(connections[i].keybuffer));

		/* TODO: init key_buffer */

		while ((connections[i].vfb_phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0)) < 0) {

ipc_call_async_2(connections[i].vfb_phone, FB_PUTCHAR, 'a', 'b', NULL, (void *)NULL); 

		}

	}

	if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, &phonead) != 0) {

		return -1;

	};

	while (1) {

		callid = ipc_wait_for_call(&call);

		switch (IPC_GET_METHOD(call)) {

			case IPC_M_PHONE_HUNGUP:

				/*FIXME: if its fb or kbd then panic! */

				/* free connection */

				if (i = find_connection(IPC_GET_ARG3(call)) < CONSOLE_COUNT) {

					connections[i].used = 0;

					 /*TODO: free connection[i].key_buffer; */

					/* FIXME: active_connection hungup */

					retval = 0;

				} else {

					/*FIXME: No such connection */

				}

				break;

			case IPC_M_CONNECT_ME_TO:

				/* find first free connection */

				if ((i = find_free_connection()) == CONSOLE_COUNT) {

					retval = ELIMIT;

					break;

				}

				connections[i].used = 1;

				connections[i].client_phone = IPC_GET_ARG3(call);

				retval = 0;

				break;

			case KBD_PUSHCHAR:

				/* got key from keyboard driver */

				/* find active console */

				/* if client is awaiting key, send it */

				/*FIXME: else store key to its buffer */

				retval = 0;

				i = IPC_GET_ARG1(call) & 0xff;

				/* switch to another virtual console */

				if ((i >= KBD_KEY_F1) && (i < KBD_KEY_F1 + CONSOLE_COUNT)) {

					active_client = i - KBD_KEY_F1;

					break;

				}

				keybuffer_push(&(connections[active_client].keybuffer), i);

				break;

			case CONSOLE_PUTCHAR:

				/* find sender client */

				/* ???

				 * if its active client, send it to vfb

				 **/

				/*FIXME: check, if its from active client, .... */

				if ((i = find_connection(IPC_GET_ARG3(call))) == CONSOLE_COUNT) {

					break;

				};

				/* TODO: send message to fb */

				ipc_call_async_2(connections[i].vfb_phone, FB_PUTCHAR, IPC_GET_ARG1(call), IPC_GET_ARG2(call), NULL, NULL); 

				break;

			case CONSOLE_GETCHAR:

				/* FIXME: */

				if (!keybuffer_pop(&(connections[active_client].keybuffer), (char *)&arg1)) {

					/* FIXME: buffer empty -> store request */

					arg1 = 'X'; /* Only temporary */

				};

//ipc_call_async_2(connections[active_client].vfb_phone, FB_PUTCHAR, ' ', arg1, NULL, (void *)NULL); 

				break;

			default:

				retval = ENOENT;

				break;

		}

		if (! (callid & IPC_CALLID_NOTIFICATION)) {

			ipc_answer_fast(callid, retval, arg1, arg2);

		}

	}

	return 0;	

}