diff --git a/app.yaml b/app.yaml
new file mode 100644
index 0000000..a0b719d
--- /dev/null
+++ b/app.yaml
@@ -0,0 +1 @@
+runtime: python37
diff --git a/main.py b/main.py
new file mode 100644
index 0000000..4db78d3
--- /dev/null
+++ b/main.py
@@ -0,0 +1,38 @@
+from flask import Flask
+
+
+# If `entrypoint` is not defined in app.yaml, App Engine will look for an app
+# called `app` in `main.py`.
+app = Flask(__name__)
+
+
+@app.route('/calcAngle',methods=['get'])
+def calcAngle():
+    hour = int(request.args.get('hour',0))
+    minute = int(request.args.get('minute',0))
+    if (hour < 0 or minute < 0 or hour > 12 or minute > 60):
+        print('Wrong input')
+    if (hour == 12):
+        hour = 0
+    if (minute == 60):
+        minute = 0
+
+    # Calculate the angles moved by
+    # hour and minute hands with
+    # reference to 12:00
+    hour_angle = 0.5 * (hour * 60 + minute)
+    minute_angle = 6 * minute
+
+    # Find the difference between two angles
+    angle = abs(hour_angle - minute_angle)
+
+    # Return the smaller angle of two
+    # possible angles
+    angle = str(int(min(360 - angle, angle)))
+
+    return angle
+if __name__ == '__main__':
+    # This is used when running locally only. When deploying to Google App
+    # Engine, a webserver process such as Gunicorn will serve the app. This
+    # can be configured by adding an `entrypoint` to app.yaml.
+    app.run(host='127.0.0.1', port=8080, debug=True)
diff --git a/main_test.py b/main_test.py
new file mode 100644
index 0000000..4ce22dc
--- /dev/null
+++ b/main_test.py
@@ -0,0 +1,12 @@
+from unittest.mock import Mock
+
+import main
+
+
+def test_clock_angle():
+    main.app.testing = True
+    client = main.app.test.test_client()
+    
+    r = client.get('/clacAngle?hour=3&minute=0')
+    assert r.status_code == 200
+    assert '90' in r.data.decode('utf-8')
diff --git a/requirements-test.txt b/requirements-test.txt
new file mode 100644
index 0000000..781d432
--- /dev/null
+++ b/requirements-test.txt
@@ -0,0 +1 @@
+pytest==5.3.2
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..d318800
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,2 @@
+flask==1.1.2
+google-cloud-error-reporting==0.33.0