#include "test/framework/catch.hpp"
extern "C" {
#include "shellmatta.h"
}
#include <string.h>

static uint32_t write_callCnt = 0u;
static char write_data[1024];
static uint32_t write_length;

static shellmatta_retCode_t writeFct(const char* data, uint32_t length)
{
    write_callCnt ++;
    while((length > 0) && (write_length < sizeof(write_data)))
    {
        write_data[write_length] = *data;
        data ++;
        length --;
        write_length ++;
    }

    return SHELLMATTA_OK;
}

static shellmatta_retCode_t doSomething(shellmatta_handle_t handle, const char *arguments, uint32_t length)
{

    return SHELLMATTA_OK;
}
shellmatta_cmd_t doSomethingCmd = {"doSomething", "do", "Function does something", "use me, please", doSomething, NULL};


TEST_CASE( "shellmatta empty function" ) {

    shellmatta_instance_t inst;
    shellmatta_handle_t handle;
    char buffer[1024];
    char historyBuffer[1024];
    char *dummyData =   "\r\nshellmatta->";

    shellmatta_doInit(  &inst,
                        &handle,
                        buffer,
                        sizeof(buffer),
                        historyBuffer,
                        sizeof(historyBuffer),
                        "shellmatta->",
                        NULL,
                        writeFct);

    write_callCnt = 0u;
    memset(write_data, 0, sizeof(write_data));
    write_length = 0u;

    shellmatta_processData(handle, "\r", 1);

    CHECK( write_length == 14u);
    REQUIRE( strcmp(dummyData, write_data) == 0);

}

TEST_CASE( "shellmatta help function" ) {

    shellmatta_instance_t inst;
    shellmatta_handle_t handle;
    char buffer[1024];
    char historyBuffer[1024];
    char *dummyData =   "h\r\n"
                        "doSomething  do  Function does something  use me, please\r\n"
                        "help         h   Print this help text     help\r\n"
                        "\r\nshellmatta->";

    shellmatta_doInit(  &inst,
                        &handle,
                        buffer,
                        sizeof(buffer),
                        historyBuffer,
                        sizeof(historyBuffer),
                        "shellmatta->",
                        NULL,
                        writeFct);
    shellmatta_addCmd(handle, &doSomethingCmd);

    write_callCnt = 0u;
    memset(write_data, 0, sizeof(write_data));
    write_length = 0u;

    shellmatta_processData(handle, "h\r", 2);

    CHECK( write_length == 123u);
    CHECK( strcmp(dummyData, write_data) == 0);


    write_callCnt = 0u;
    memset(write_data, 0, sizeof(write_data));
    write_length = 0u;

    dummyData =     "h 564 321 56 465 46\r\n"
                    "doSomething  do  Function does something  use me, please\r\n"
                    "help         h   Print this help text     help\r\n"
                    "\r\nshellmatta->";

    shellmatta_processData(handle, "h 564 321 56 465 46\r", 20);

    CHECK( write_length == 141u);
    CHECK( strcmp(dummyData, write_data) == 0);


    write_callCnt = 0u;
    memset(write_data, 0, sizeof(write_data));
    write_length = 0u;

    dummyData = "hr\r\n"
                "Command: hr not found"
                "\r\nshellmatta->";

    shellmatta_processData(handle, "hr\r", 3);

    CHECK( write_length == 39u);
    REQUIRE( strcmp(dummyData, write_data) == 0);
}