/**
 * @file      ansi_port.c
 * @author    Ji Youzhou
 * @version   V0.1
 * @date      28 Oct 2019
 * @brief     [brief]
 * *****************************************************************************
 * @attention
 * 
 * MIT License
 * 
 * Copyright (C) 2019 Ji Youzhou. or its affiliates.  All Rights Reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.

/* Includes ------------------------------------------------------------------*/
#include "ansi_port.h"
#include "ansi.h"
#include "stdio.h"
#include "nr_micro_shell.h"
#include "string.h"

// show string
void ansi_show_str(char *str, unsigned int len)
{
    unsigned int i;
    for (i = 0; i < len; i++)
    {
        ansi_show_char(str[i]);
    }
}

void nr_ansi_ctrl_common_slover(ansi_st *ansi)
{
    unsigned int i;
    for (i = 0; i < ansi->cmd_num; i++)
    {
        ansi_show_char((*(ansi->combine_buf + i)));
    }
}

// line break '\n' processing
void nr_ansi_in_newline(ansi_st *ansi)
{
    ansi->p = -1;
    ansi->counter = 0;

    nr_shell.cmd_his.index = (nr_shell.cmd_his.len > 0) ? 1 : 0;

    ansi_show_char('\r');
	ansi_show_char('\n');
}

// Backspace '\b' processing
void nr_ansi_in_backspace(ansi_st *ansi)
{
    unsigned int i;

    if (ansi->p >= 0)
    {
        for (i = ansi->p; i < ansi->counter; i++)
        {
            ansi->current_line[i] = ansi->current_line[i + 1];
        }

        ansi->p--;
        ansi->counter--;

        ansi_show_char('\b');
        shell_printf(NR_ANSI_CLR_R_MV_L_NCHAR(1));
    }
}

// up key processing
void nr_ansi_in_up(ansi_st *ansi)
{
    if (nr_shell.cmd_his.index > 0)
    {
        nr_shell.cmd_his.index++;
        nr_shell.cmd_his.index = (nr_shell.cmd_his.index > nr_shell.cmd_his.len) ? 1 : nr_shell.cmd_his.index;

        shell_printf("\033[%dD", ansi->p + 1);
        shell_printf(NR_ANSI_CLEAR_RIGHT);

        shell_his_copy_queue_item(&nr_shell.cmd_his, nr_shell.cmd_his.index, ansi->current_line);
        ansi->counter = strlen(ansi->current_line);
        ansi->p = ansi->counter - 1;

        ansi_show_str(ansi->current_line, ansi->counter);
    }
}

// down key processing
void nr_ansi_in_down(ansi_st *ansi)
{
    if (nr_shell.cmd_his.index > 0)
    {
        nr_shell.cmd_his.index--;
        nr_shell.cmd_his.index = (nr_shell.cmd_his.index == 0) ? nr_shell.cmd_his.len : nr_shell.cmd_his.index;

        shell_printf("\033[%dD", ansi->p + 1);
        shell_printf(NR_ANSI_CLEAR_RIGHT);

        shell_his_copy_queue_item(&nr_shell.cmd_his, nr_shell.cmd_his.index, ansi->current_line);
        ansi->counter = strlen(ansi->current_line);
        ansi->p = ansi->counter - 1;

        ansi_show_str(ansi->current_line, ansi->counter);
    }
}

// left key <- processing
void nr_ansi_in_left(ansi_st *ansi)
{
    if (ansi->p > -1)
    {
        ansi->p--;
        shell_printf("\033[1D");
    }
}

// right key <- processing
void nr_ansi_in_right(ansi_st *ansi)
{
    if (ansi->p < (int)(ansi->counter - 1) )
    {
        ansi->p++;
		shell_printf("\033[1C");
    }
}

// tab key processing
void nr_ansi_in_tab(ansi_st *ansi)
{
    char *cmd;
    cmd = shell_cmd_complete(&nr_shell, ansi->current_line);
    if (cmd != NULL && ansi->counter > 0)
    {
        shell_printf("\033[%dD", ansi->p + 1);
        shell_printf(NR_ANSI_CLEAR_RIGHT);

        ansi->counter = strlen(cmd);
        ansi->p = ansi->counter - 1;
        strcpy(ansi->current_line, cmd);
    
        ansi_show_str(ansi->current_line, ansi->counter);
    }
}

/******************* (C) COPYRIGHT 2019 Ji Youzhou *****END OF FILE*****************/