from transformers import AutoTokenizer
import itertools



def get_color():
    colors = ['#df7b55', '#2c7482', '#2c8234', '#5581df', '#822c63','#b355df']

    return itertools.cycle(colors)

def get_res(model_name, input_sentence, single_print=True):
    
    tokenizer = AutoTokenizer.from_pretrained(model_name, trust_remote_code=True)
    color_iterator = get_color()
    out = tokenizer.encode(input_sentence, add_special_tokens=False)
    token_num = len(out)

    work_around = True
    if work_around:
        w = [] 
        pre = ""
        for i in range(len(out)): 
            res = tokenizer.decode(out[:i+1])  
            if w == []:
                w.append(res)
            else:
                pre_len = len(pre) #0
                w.append(res[pre_len:])  
            pre = res
                
        w = [ f'<span style="font-size:1.25em;background-color:{next(color_iterator)}">{x}</span>' for x in w ]
    else:
        w = [ f'<span style="font-size:1.25em;background-color:{next(color_iterator)}">{tokenizer.decode(x)}</span>' for x in out ]
    res = ''.join(w)
    if single_print:
        print(res + str(token_num))
    else:
        return res, token_num