#include "emul_repl.h"
#include "emul_inst_exec.h"
#include "emul_io_std.h"
#include <stdio.h>
#include <string.h>
#include <ncurses.h>

#define READ_LINE_MAX 64

static WINDOW *win;

void emul_repl_readline(char input[READ_LINE_MAX]) {
    char c;
    int i = 0;
    int y, x;
    printw(">>");
    refresh();
    noecho();
    while( (c = getch()) != '\n' ) {
        if (c == KEY_BACKSPACE) {
            getyx(win, y, x);
            input[--i] = '\0';
            move(y, x-1);
        } else {
            input[i++] = c;
            echochar(c);
        }
    }
    echo();
    input[i++] = '\0';
    printw("\r");
    clrtoeol();
    //printw("\n");
    refresh();
}

void emul_repl_printline();

void emul_repl_init() {
    emul_inst_exec_init();
    // ウィンドウポインタ取得
    win = emul_getWin();
    keypad(stdscr, TRUE);
}

char *menu[] = {
    "Display help  >>:help",
    "   Exit       >>:exit"
};

void emul_repl_start() {
    char input[READ_LINE_MAX];
    exitcode_t state;
    int y, x;
    char *title = "Wellcome!";
    int i,j;

    emul_repl_init();

    // title
    getmaxyx(win, y, x);
    move(y/2-2, (x-strlen(title))/2);
    printw("%s", title);
    for (i = 0; i < 2; i++) {
        move(y/2+i, (x-strlen(menu[i]))/2);
        printw("%s", menu[i]);
    }
    move(0, 0);
    printw("");
    refresh();
    getch();
    wclear(win);
    refresh();

    while (1) {
        emul_repl_readline(input);
        emul_inst_exec_loadline(input);
        state = emul_inst_exec_run();
        if (state == Failed) {
            emul_out_std_debug("Abend exit\n");
        } else if (state == Success) {
            emul_out_std_debug("Sucsess\n");
            break;
        }
    }
}

void emul_repl_end() {
    emul_inst_exec_end();
}