Update app.py

app.py

@@ -1,20 +1,61 @@
 import streamlit as st
+from datetime import datetime, timedelta
+import pytz
 import time
 
-def countdown(t):
-    while t:
-        mins, secs = divmod(t, 60)
-        timer = '{:02d}:{:02d}'.format(mins, secs)
-        print(timer, end="\r") # Overwrites the previous line.
-        time.sleep(1)
-        t -= 1
+# Function to convert seconds to minutes:seconds format
+def format_time(seconds):
+    return f"{seconds // 60:02d}:{seconds % 60:02d}"
+
+# Custom CSS for big timer digits
+st.markdown("""
+<style>
+.big-font {
+    font-size: 60px !important;
+    font-weight: bold;
+}
+</style>
+""", unsafe_allow_html=True)
+
+# Check if countdown and timer_active keys exist in the session state
+if 'countdown' not in st.session_state:
+    st.session_state.countdown = 0
+if 'timer_active' not in st.session_state:
+    st.session_state.timer_active = False
 
-st.title("Timer App")
+# Start the timer
+def start_timer():
+    st.session_state.timer_active = True
+    st.session_state.countdown_end_time = time.time() + st.session_state.countdown
 
-minutes = st.number_input("Enter the number of minutes", min_value=0, value=3, step=1)
-seconds = st.number_input("Enter the number of seconds", min_value=0, value=0, step=1)
+# Timer input form
+with st.form("Timer"):
+    input_seconds = st.number_input("Set timer (in seconds):", min_value=10, max_value=3600, value=180, step=10)
+    submitted = st.form_submit_button("Start Timer")
+    if submitted:
+        st.session_state.countdown = input_seconds
+        start_timer()
+
+# Update and display the timer
+if st.session_state.timer_active:
+    elapsed_time = int(time.time() - (st.session_state.countdown_end_time - st.session_state.countdown))
+    if elapsed_time < st.session_state.countdown:
+        st.markdown(f'<div class="big-font">{format_time(st.session_state.countdown - elapsed_time)}</div>', unsafe_allow_html=True)
+        time.sleep(1)
+        st.experimental_rerun()
+    else:
+        st.session_state.timer_active = False
+        st.markdown('<div class="big-font">00:00</div>', unsafe_allow_html=True)
+        st.balloons()
+        # Suggestion: Use Streamlit's st.audio to play a sound notification here
 
-total_time = minutes * 60 + seconds
+# World Clock
+st.header("World Clock")
+selected_timezone = st.selectbox("Select Timezone", pytz.all_timezones, index=pytz.all_timezones.index('UTC'))
+current_time = datetime.now(pytz.timezone(selected_timezone))
+st.write(f"Current time in {selected_timezone}: {current_time.strftime('%Y-%m-%d %H:%M:%S')}")
 
-if st.button("Start Timer"):
-    countdown(int(total_time))
+# Audio notification (example suggestion)
+# Due to Streamlit's architecture, directly playing sound on the server won't be heard by the user.
+# Instead, you could provide a button to play a sound or link to a sound file.
+# st.audio('path_to_your_audio_file.mp3')