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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>

#include <unistd.h>

#include <async.h>

//#define CONSOLE_COUNT VFB_CONNECTIONS

#define CONSOLE_COUNT 6

#define NAME "CONSOLE"

int active_client = 0;

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;

}

/* Handler for keyboard */

static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)

{

	ipc_callid_t callid;

	ipc_call_t call;

	int retval;

	int i;

	/* Ignore parameters, the connection is alread opened */

	while (1) {

		callid = async_get_call(&call);

		switch (IPC_GET_METHOD(call)) {

		case IPC_M_PHONE_HUNGUP:

			ipc_answer_fast(callid,0,0,0);

			/* TODO: Handle hangup */

			return;

		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);

			/* Send it to first FB, DEBUG */

//			ipc_call_async_2(connections[0].vfb_phone, FB_PUTCHAR, 0, IPC_GET_ARG1(call),NULL,NULL);

			ipc_call_sync_2(connections[0].vfb_phone, FB_PUTCHAR, 0, IPC_GET_ARG1(call),NULL,NULL);

			break;

		default:

			retval = ENOENT;

		}		

		ipc_answer_fast(callid, retval, 0, 0);

	}

}

/** Default thread for new connections */

void client_connection(ipc_callid_t iid, ipc_call_t *icall)

{

	ipc_callid_t callid;

	ipc_call_t call;

	int consnum;

	ipcarg_t arg1;

	if ((consnum = find_free_connection()) == CONSOLE_COUNT) {

		ipc_answer_fast(iid,ELIMIT,0,0);

		return;

	}

	connections[consnum].used = 1;

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

	/* Accept the connection */

	ipc_answer_fast(iid,0,0,0);

	while (1) {

		callid = async_get_call(&call);

		switch (IPC_GET_METHOD(call)) {

		case IPC_M_PHONE_HUNGUP:

			/* TODO */

			ipc_answer_fast(callid, 0,0,0);

			return;

		case CONSOLE_PUTCHAR:

			/* TODO: send message to fb */

			ipc_call_async_2(connections[consnum].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;

		}

		ipc_answer_fast(callid, 0,0,0);

	}

}

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

{

	ipcarg_t phonehash;

	int kbd_phone, fb_phone;

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

	int i;

	/* Connect to keyboard driver */

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

		usleep(10000);

	};

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

		return -1;

	};

	async_new_connection(phonehash, 0, NULL, keyboard_events);

	/* 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, &phonehash) != 0) {

		return -1;

	};

	async_manager();

	return 0;	

}