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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>

static void sysput(char c)

{

    __SYSCALL3(SYS_IO, 1, &c, 1);

}

//#define CONSOLE_COUNT VFB_CONNECTIONS

#define CONSOLE_COUNT 8

#define NAME "CONSOLE"

int active_console = 1;

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;

    char c;

    /* 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;

            c = IPC_GET_ARG1(call);

//          ipc_call_sync_2(connections[3].vfb_phone, FB_PUTCHAR, 0, c,NULL,NULL);

            /* switch to another virtual console */

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

                active_console = c - KBD_KEY_F1;

                break;

            }

            keybuffer_push(&(connections[active_console].keybuffer), c);

            /* 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[4].vfb_phone, FB_PUTCHAR, 0, c,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:

            if (consnum != active_console) {

            }

            /* Send message to fb */

            ipc_call_sync_2(connections[consnum].vfb_phone, FB_PUTCHAR, IPC_GET_ARG1(call), IPC_GET_ARG2(call), NULL, NULL);

//          ipc_call_sync_2(connections[6].vfb_phone, FB_PUTCHAR, 0, IPC_GET_ARG2(call),NULL,NULL);

            break;

        case CONSOLE_CLEAR:

            break;

        case CONSOLE_GOTO:

            break;

        case CONSOLE_GETCHAR:

            /* FIXME: Only temporary solution until request storage will be created  */

            while (keybuffer_empty(&(connections[consnum].keybuffer))) {

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

                async_usleep(1000);

            };

            keybuffer_pop(&(connections[consnum].keybuffer), (char *)&arg1);

//          ipc_call_sync_2(connections[6].vfb_phone, FB_PUTCHAR, 0, arg1,NULL,NULL);

            break;

        }

        ipc_answer_fast(callid, 0, arg1, 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) {

            usleep(10000);

            //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;  

}