/*
 * MIT License
 *
 * Copyright (c) 2019 Stefan Strobel <stefan.strobel@shimatta.net>
 *
 * 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.
 */

/**
 * @file shellmatta.c
 * @brief Main implementation of the Shellmatta terminal implementation
 * @author Stefan Strobel <stefan.strobel@shimatta.net>
 */

/**
 * @addtogroup shellmatta
 * @{
 */

#include "shellmatta.h"
#include <stdio.h>
#include <stddef.h>
#include <string.h>

/**
 * @brief initialize the shellmatta terminal and provide all callbacks
 * @param[in,out]   inst                pointer to a shellmatta instance
 * @param[in]       buffer              pointer to the input buffer to use
 * @param[in]       bufferSize          size of the provided input buffer
 * @param[in]       historyBuffer       pointer to the history buffer to use
 *                                      NULL in case of no history buffer
 * @param[in]       historyBufferSize   size of the history buffer
 *                                      0 in case of no history buffer
 */
void shellmatta_doInit(
        shellmatta_instance_t *inst,
        uint8_t *buffer,
        uint32_t bufferSize,
        uint8_t *historyBuffer,
        uint32_t historyBufferSize)
{
    /** - copy all provided buffers into the shellmatta instance */
    inst->buffer = buffer;
    inst->bufferSize = bufferSize;
    inst->bufferReadPointer = 0u;
    inst->bufferWritePointer = 0u;
    inst->cmdList = NULL;
    inst->historyBuffer = historyBuffer;
    inst->historyBufferSize = historyBufferSize;
}


void shellmatta_addCmd(shellmatta_instance_t *inst, shellmatta_cmd_t *cmd)
{
    shellmatta_cmd_t *tempCmd = inst->cmdList;

    if (NULL == tempCmd)
    {
        inst->cmdList = cmd;
        cmd->next = NULL;
    }
    else
    {
        while (tempCmd->next != NULL)
        {
            tempCmd = tempCmd->next;
        }
        tempCmd->next = cmd;
        cmd->next = NULL;
    }
}


void shellmatta_doTask(shellmatta_instance_t *inst, uint32_t time)
{

}

void shellmatta_processData(shellmatta_instance_t *inst, char *data,
        uint32_t size)
{
    printf("%c", *data);

    if (0x0A == *data)
    {
        shellmatta_cmd_t *cmd = inst->cmdList;
        uint8_t cmdExecuted = 0u;
        inst->buffer[inst->bufferWritePointer] = 0u;

        while (NULL != cmd)
        {
            if (0 == strcmp(inst->buffer, cmd->cmd))
            {
                cmdExecuted = 1u;
                char *blubb[10];
                blubb[0] = inst->buffer;
                cmd->cmdFct(1, blubb);
                cmd = NULL;
            }
            else
            {
                cmd = cmd->next;
            }
        }

        if (cmdExecuted == 0u)
        {
            printf("failed to find command");
        }

        inst->bufferWritePointer = 0u;
    }
    else
    {
        inst->buffer[inst->bufferWritePointer] = *data;
        inst->bufferWritePointer++;
    }
}

void shellmatta_printf(shellmatta_instance_t *inst, const char *fmt, ...)
{
    /*TODO dummy implementation, shall be replaced by a generic output mechanism */
    printf(fmt);
}

void shellmatta_getArg(uint32_t cnt, uint8_t *arg)
{

}

/** @} */