import base64 as b64

def encode_text(text):
    """Base64 编码"""
    return b64.b64encode(text.encode('utf-8')).decode('utf-8')

def decode_text(text):
    """Base64 解码"""
    try:
        return b64.b64decode(text.encode('utf-8')).decode('utf-8')
    except Exception:
        return "解码失败，请检查输入是否合法"


def page():
    """工具页面"""
    from flask import render_template, request

    result = None
    input_text = ""
    action = request.args.get("action")
    raw_text = request.args.get("text", "")

    if raw_text:
        input_text = raw_text
        if action == "encode_text":
            result = encode_text(raw_text)
        elif action == "decode_text":
            result = decode_text(raw_text)

    return render_template("base64.html", result=result, input_text=input_text)