import difflib

def text_diff(text1, text2):
    d = difflib.HtmlDiff()
    html = d.make_table(text1.splitlines(), text2.splitlines(), context=True)
    return html

def page():
    from flask import render_template, request
    diff_result = None
    text1 = request.args.get("text1", "").strip()
    text2 = request.args.get("text2", "").strip()

    if text1 and text2:
        diff_result = text_diff(text1, text2)

    return render_template("text_diff.html", diff_result=diff_result, text1=text1, text2=text2)