import random
try:
    from .rand import rand_var, rand_case, rand_words, rand_label
except ImportError:
    from rand import rand_var, rand_case, rand_words, rand_label

def make_junk_var():
    return f'%{rand_var()}%'

def make_set_cmd(var_name, value, obfuscate=True):
    set_cmd = rand_case('set')
    if obfuscate:
        fmt = f'{set_cmd} "{var_name}={value}"'
        prefix = make_junk_var() if random.random() > 0.5 else ''
        return f'{prefix}{fmt}'
    return f'{set_cmd} "{var_name}={value}"'

def make_goto_cmd(label):
    goto = rand_case('goto')
    g = goto[0] + make_junk_var() + goto[1] + make_junk_var() + goto[2:]
    return f'{g} :{label}'

def make_rem_line():
    rem = rand_case('rem')
    style = random.choice(['rem', '::', 'rem_junk'])
    if style == 'rem':
        r = rem[0] + make_junk_var() + rem[1:]
        return f'{r} {make_junk_var()} {rand_words()}'
    elif style == '::':
        return f'{make_junk_var()}:: {make_junk_var()} {rand_words()}'
    else:
        r = rand_case('rem')
        return f'%{rand_var()}%{r} %{rand_var()}% {rand_words()}'

def make_junk_block():
    lines = []
    next_label = rand_label()
    lines.append(make_goto_cmd(next_label))
    for _ in range(random.randint(1, 3)):
        lines.append(make_rem_line())
    lines.append(f':{next_label}')
    return lines