/**
 * *****************************************************************************
 * file name : cmd.cpp
 * author    : Hung Ngo
 * description : definitions of simple toy commands
 * *****************************************************************************
 */
#include <iostream>
#include <stdlib.h>   // for exit()

#include "cmd.h"
#include "Lexer.h"
#include "term_control.h"
#include "error_handling.h"

using namespace std;

/**
 * -----------------------------------------------------------------------------
 *  expects two Tokens: IDENT and STRING
 *  prints the STRING using the color specified by the IDENT token
 * -----------------------------------------------------------------------------
 */
void print_color(Lexer lexer) {
    Token t1, t2;
    // the following is very clumsy; need a "tokenizer" member function
    if (lexer.has_more_token()) {
        t1 = lexer.next_token();
        if (lexer.has_more_token()) {
            t2 = lexer.next_token();
            if (!lexer.has_more_token()) { // this means we're probably ok
                if (t1.type == IDENT && t2.type == STRING) {
                    if (t1.value == "red") {
                        cout << term_cc(RED) << t2.value << endl;
                        return;
                    } else if (t1.value == "green") {
                        cout << term_cc(GREEN) << t2.value << endl;
                        return;
                    } else if (t1.value == "blue") {
                        cout << term_cc(BLUE) << t2.value << endl;
                        return;
                    }
                }
            }
        }
    }
    error_return("Syntax error, use \"Foreground [red|green|blue ] \"str\"");
}
/**
 * -----------------------------------------------------------------------------
 *  terminates the program, ignores all parameters
 * -----------------------------------------------------------------------------
 */
void bye(Lexer lexer) {
    if (lexer.has_more_token()) {
        error_return("Syntax error: use bye/exit/quit\n");
    } else {
        exit(0);
    }
}