// *****************************************************************************
// file name : cmd.cpp
// author    : Hung Ngo
// description : definitions of simple toy commands
// *****************************************************************************
#include <iostream>
#include <map>
#include <cstdlib>   // 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) {
    // one or both of t1, t2 might be ENDTOK or ERRTOK
    Token t1 = lexer.next_token(), t2 = lexer.next_token();

    // again there's a better way to initialize this in C++11
    map<string, term_colors_t> color_map;
    color_map["red"]   = RED;
    color_map["green"] = GREEN;
    color_map["blue"]  = BLUE;
    color_map["cyan"]  = CYAN;

    if (!lexer.has_more_token() && t1.type == IDENT && t2.type == STRING) {
        cout << term_cc(color_map[t1.value]) << t2.value << endl;
    } else {
        error_return("Syntax : \"foreground [red|green|blue|cyan] \"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);
    }
}