updated app

app.py

 import os
-
 from flask import Flask, render_template, request, jsonify
 from sinlingua.singlish.rulebased_transliterator import RuleBasedTransliterator
 from sinlingua.grammar_rule.grammar_main import GrammarMain
 # from sinlingua.summarizer.faster_longformer import FLongformerTextSummarizer
 from sinlingua.sinhala_audio.audio_to_text import conversion
+from flaskwebgui import FlaskUI, close_application
 
-app = Flask(__name__)
+app = Flask(__name__, template_folder="templates")
+# ui = FlaskUI(app, width=500, height=500)
 
 
 @app.route('/', methods=['GET', 'POST'])
@@ -42,6 +43,11 @@ def summarize():
     return render_template('summarize.html')
 
 
+@app.route("/close", methods=["GET"])
+def close_window():
+    close_application()
+
+
 @app.route('/process', methods=['POST'])
 def process():
     input_text, audio_input = None, None