diff --git a/dev_gpt/options/generate/static_files/gateway/app_template.py b/dev_gpt/options/generate/static_files/gateway/app_template.py
index a9ec3cd..5da3b26 100644
--- a/dev_gpt/options/generate/static_files/gateway/app_template.py
+++ b/dev_gpt/options/generate/static_files/gateway/app_template.py
@@ -3,51 +3,68 @@ import os
 
 import streamlit as st
 from jina import Client, Document, DocumentArray
-import io
 
-st.set_page_config(
-    page_title="<page title here>",
-    page_icon="<page icon here>",
-    layout="centered",
-    initial_sidebar_state="auto",
-)
-
-st.title("<thematic emoji here> <header title here>")
-st.markdown(
-    "<10 word description here>"
-    "To generate and deploy your own microservice, click [here](https://github.com/jina-ai/dev-gpt)."
-)
-st.subheader("<a unique thematic emoji here> <sub header title here>")  # only if input parameters are needed
-with st.form(key="input_form"):
-    # <input parameter definition here>
-    input_json_dict = {} #
+def main():
+    set_page_config()
+    st.title("<thematic emoji here> <header title here>")
+    st.markdown(
+        "<10 word description here>"
+        "To generate and deploy your own microservice, click [here](https://github.com/jina-ai/dev-gpt)."
+    )
+    st.subheader("<a unique thematic emoji here> <sub header title here>")  # only if input parameters are needed
+    is_submitted, input_json_dict = get_input_parameters()
 
     input_json_dict_string = json.dumps(input_json_dict)
-    submitted = st.form_submit_button("<submit button text>")
+    # call microservice
+    if is_submitted:
+        output_data = make_api_call(input_json_dict_string)
+        # <visualization of results here>
 
-# Process input and call microservice
-if submitted:
+    display_curl_command(input_json_dict_string)
+
+def make_api_call(input_json_dict_string):
     with st.spinner("<spinner text here>..."):
         client = Client(host="http://localhost:8080")
         d = Document(text=input_json_dict_string)
         response = client.post("/", inputs=DocumentArray([d]))
 
         output_data = json.loads(response[0].text)
-        # <visualization of results here>
+    return output_data
 
-# Display curl command
-deployment_id = os.environ.get("K8S_NAMESPACE_NAME", "")
-api_endpoint = (
-    f"https://dev-gpt-{deployment_id.split('-')[1]}.wolf.jina.ai/post"
-    if deployment_id
-    else "http://localhost:8080/post"
-)
-
-with st.expander("See curl command"):
-    st.markdown("You can use the following curl command to send a request to the microservice from the command line:")
-    escaped_input_json_dict_string = input_json_dict_string.replace('"', '\\"')
-
-    st.code(
-        f'curl -X "POST" "{api_endpoint}" -H "accept: application/json" -H "Content-Type: application/json" -d \'{{"data": [{{"text": "{escaped_input_json_dict_string}"}}]}}\'',
-        language="bash",
+def display_curl_command(input_json_dict_string):
+    # Display curl command
+    deployment_id = os.environ.get("K8S_NAMESPACE_NAME", "")
+    api_endpoint = (
+        f"https://dev-gpt-{deployment_id.split('-')[1]}.wolf.jina.ai/post"
+        if deployment_id
+        else "http://localhost:8080/post"
     )
+
+    with st.expander("See curl command"):
+        st.markdown(
+            "You can use the following curl command to send a request to the microservice from the command line:")
+        escaped_input_json_dict_string = input_json_dict_string.replace('"', '\\"')
+
+        st.code(
+            f'curl -X "POST" "{api_endpoint}" -H "accept: application/json" -H "Content-Type: application/json" -d \'{{"data": [{{"text": "{escaped_input_json_dict_string}"}}]}}\'',
+            language="bash",
+        )
+
+def get_input_parameters():
+    with st.form(key="input_form"):
+        # <input parameter definition here>
+        input_json_dict = {}  # <input parameter dictionary here>
+        is_submitted = st.form_submit_button("<submit button text>")
+    return is_submitted, input_json_dict
+
+
+def set_page_config():
+    st.set_page_config(
+        page_title="<page title here>",
+        page_icon="<page icon here>",
+        layout="centered",
+        initial_sidebar_state="auto",
+    )
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file