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from datetime import datetime, timedelta
import re
import os
import json
from scheduler import get_calendar_service, find_meetings_with_person, remove_event
st.set_page_config(page_title="Autonomous Calendar Assistant", page_icon="📅")
def login_page():
st.title("Login to Google Calendar")
st.info("This app needs access to your Google Calendar to function properly.")
if st.button("Login with Google Calendar"):
with st.spinner("Authenticating with Google..."):
try:
# Perform authentication - this will redirect if needed
service = get_calendar_service()
st.session_state['authenticated'] = True
st.success("Authentication successful!")
st.rerun() # Rerun the app with authenticated state
except Exception as e:
st.error(f"Authentication failed: {str(e)}")
def agent_page():
st.title("Autonomous Calendar Agent")
try:
# Get the service
service = get_calendar_service()
# User Interface
st.write("### Your AI Calendar Assistant")
st.write("I understand natural language. Tell me what you need help with for your calendar.")
# Command input - larger text area for natural language
command = st.text_area(
"What would you like to do with your calendar?",
height=120,
placeholder="Examples:\n- Schedule a meeting with Alex tomorrow at 2pm\n- Find all meetings with Morgan this month\n- Show my calendar for next Monday\n- When am I free tomorrow?\n- Check my availability for Friday"
)
# Process the command
if st.button("Process", key="process_cmd"):
if not command:
st.warning("Please enter a command first.")
return
with st.spinner("Processing your request..."):
# Convert command to lowercase for easier pattern matching
command_lower = command.lower()
# FINDING MEETINGS WITH PERSON
if re.search(r'find.*(?:meeting|appointment).*with\s+(\w+)', command_lower) or \
re.search(r'show.*(?:meeting|appointment).*with\s+(\w+)', command_lower):
# Extract person name
person_match = re.search(r'(?:with|and)\s+(\w+(?:\s+\w+)?)', command_lower)
if person_match:
person = person_match.group(1).strip()
# Extract time constraints if any
time_min = datetime.now().isoformat() + 'Z'
time_max = (datetime.now() + timedelta(days=30)).isoformat() + 'Z'
if 'today' in command_lower:
today = datetime.now()
time_min = datetime.combine(today.date(), datetime.min.time()).isoformat() + 'Z'
time_max = datetime.combine(today.date(), datetime.max.time()).isoformat() + 'Z'
elif 'tomorrow' in command_lower:
tomorrow = datetime.now() + timedelta(days=1)
time_min = datetime.combine(tomorrow.date(), datetime.min.time()).isoformat() + 'Z'
time_max = datetime.combine(tomorrow.date(), datetime.max.time()).isoformat() + 'Z'
elif 'this week' in command_lower:
today = datetime.now()
start_of_week = today - timedelta(days=today.weekday())
end_of_week = start_of_week + timedelta(days=6)
time_min = datetime.combine(start_of_week.date(), datetime.min.time()).isoformat() + 'Z'
time_max = datetime.combine(end_of_week.date(), datetime.max.time()).isoformat() + 'Z'
elif 'this month' in command_lower:
today = datetime.now()
last_day = today.replace(day=28) + timedelta(days=4) # Move to next month
last_day = last_day.replace(day=1) - timedelta(days=1) # Last day of current month
time_min = datetime.combine(today.replace(day=1).date(), datetime.min.time()).isoformat() + 'Z'
time_max = datetime.combine(last_day.date(), datetime.max.time()).isoformat() + 'Z'
# Find meetings with this person
meetings = find_meetings_with_person(service, "primary", person, time_min, time_max)
if meetings:
st.success(f"I found {len(meetings)} meetings with {person}")
for i, meeting in enumerate(meetings):
start_time = meeting['start']
if 'T' in start_time:
start_dt = datetime.fromisoformat(start_time.replace('Z', '+00:00'))
formatted_time = start_dt.strftime("%A, %b %d, %Y at %I:%M %p")
else:
formatted_time = start_time
with st.expander(f"{i+1}. {meeting['summary']} - {formatted_time}"):
st.write(f"**Time:** {formatted_time}")
st.markdown(f"[View in Calendar]({meeting['htmlLink']})")
# Cancel button
if st.button(f"Cancel this meeting", key=f"cancel_{i}"):
result = remove_event(service, "primary", meeting['id'])
st.success("Meeting cancelled!")
st.rerun()
else:
st.info(f"I couldn't find any meetings with {person} in the specified time range.")
# VIEWING CALENDAR FOR A SPECIFIC DAY
elif re.search(r'(?:show|view|display).*(?:calendar|schedule|meeting).*(?:for|on)\s+(\w+)', command_lower) or \
re.search(r'what.*(?:calendar|schedule|meeting).*(?:for|on)\s+(\w+)', command_lower):
# Try to extract date
date_value = None
if 'today' in command_lower:
date_value = datetime.now().date()
elif 'tomorrow' in command_lower:
date_value = (datetime.now() + timedelta(days=1)).date()
else:
# Extract day name if present
day_mapping = {
'monday': 0, 'tuesday': 1, 'wednesday': 2,
'thursday': 3, 'friday': 4, 'saturday': 5, 'sunday': 6
}
for day_name, day_number in day_mapping.items():
if day_name in command_lower:
today = datetime.now()
days_ahead = (day_number - today.weekday()) % 7
if days_ahead == 0: # Today
if 'next' in command_lower:
days_ahead = 7 # Next week
date_value = (today + timedelta(days=days_ahead)).date()
break
if date_value:
# Get the day's events
start_dt = datetime.combine(date_value, datetime.min.time())
end_dt = datetime.combine(date_value, datetime.max.time())
time_min = start_dt.isoformat() + 'Z'
time_max = end_dt.isoformat() + 'Z'
try:
events_result = service.events().list(
calendarId="primary",
timeMin=time_min,
timeMax=time_max,
singleEvents=True,
orderBy='startTime'
).execute()
events = events_result.get('items', [])
if events:
st.success(f"Here's your schedule for {date_value.strftime('%A, %B %d')}:")
for i, event in enumerate(events):
summary = event.get('summary', 'No Title')
start = event['start'].get('dateTime', event['start'].get('date'))
if 'T' in start:
start_dt = datetime.fromisoformat(start.replace('Z', '+00:00'))
time_str = start_dt.strftime("%I:%M %p")
else:
time_str = "All day"
with st.expander(f"{summary} - {time_str}"):
st.write(f"**Event:** {summary}")
st.write(f"**Time:** {time_str}")
st.markdown(f"[View in Calendar]({event.get('htmlLink', '#')})")
# Cancel button
if st.button("Cancel this event", key=f"cancel_event_{i}"):
result = remove_event(service, "primary", event['id'])
st.success("Event cancelled!")
st.rerun()
else:
st.info(f"You have no events scheduled for {date_value.strftime('%A, %B %d')}.")
except Exception as e:
st.error(f"Error fetching events: {str(e)}")
else:
st.error(f"I couldn't understand the date in your request. Please try again with a clearer date specification.")
# CHECKING AVAILABILITY
elif re.search(r'(?:when|what time).*(?:free|available)', command_lower) or \
re.search(r'check.*availability', command_lower) or \
re.search(r'am i free', command_lower):
# Try to extract date
date_value = None
if 'today' in command_lower:
date_value = datetime.now().date()
elif 'tomorrow' in command_lower:
date_value = (datetime.now() + timedelta(days=1)).date()
else:
# Extract day name if present
day_mapping = {
'monday': 0, 'tuesday': 1, 'wednesday': 2,
'thursday': 3, 'friday': 4, 'saturday': 5, 'sunday': 6
}
for day_name, day_number in day_mapping.items():
if day_name in command_lower:
today = datetime.now()
days_ahead = (day_number - today.weekday()) % 7
if days_ahead == 0: # Today
if 'next' in command_lower:
days_ahead = 7 # Next week
date_value = (today + timedelta(days=days_ahead)).date()
break
# Default to tomorrow if no date found
if not date_value:
date_value = datetime.now().date() + timedelta(days=1)
# Set default business hours
start_hour = 9
end_hour = 17
# Check availability
start_dt = datetime.combine(date_value, datetime.min.time().replace(hour=start_hour))
end_dt = datetime.combine(date_value, datetime.min.time().replace(hour=end_hour))
time_min = start_dt.isoformat() + 'Z'
time_max = end_dt.isoformat() + 'Z'
try:
# Query the freebusy API
freebusy_query = {
"timeMin": time_min,
"timeMax": time_max,
"items": [{"id": "primary"}]
}
freebusy_result = service.freebusy().query(body=freebusy_query).execute()
busy_slots = freebusy_result['calendars']['primary']['busy']
st.success(f"Here's your availability for {date_value.strftime('%A, %B %d')}:")
if busy_slots:
# Create a list of hours and availability
hour_slots = []
for hour in range(start_hour, end_hour + 1):
slot_start = datetime.combine(date_value, datetime.min.time().replace(hour=hour))
slot_end = slot_start + timedelta(hours=1)
# Check if this slot overlaps with any busy time
is_busy = False
for busy in busy_slots:
busy_start = datetime.fromisoformat(busy['start'].replace('Z', '+00:00'))
busy_end = datetime.fromisoformat(busy['end'].replace('Z', '+00:00'))
if (slot_start < busy_end and slot_end > busy_start):
is_busy = True
break
hour_slots.append({
"hour": hour,
"time_str": slot_start.strftime("%I:%M %p"),
"is_busy": is_busy
})
# Display as a table
col1, col2 = st.columns([1, 2])
with col1:
st.markdown("**Time**")
for slot in hour_slots:
st.write(slot["time_str"])
with col2:
st.markdown("**Status**")
for slot in hour_slots:
if slot["is_busy"]:
st.markdown("🔴 Busy")
else:
st.markdown("🟢 Available")
else:
st.info(f"You're completely free on {date_value.strftime('%A, %B %d')} from {start_hour}:00 to {end_hour}:00!")
except Exception as e:
st.error(f"Error checking availability: {str(e)}")
# DEFAULT: Let the agent handle all other commands
else:
result = agent.process_command(command)
if result["status"] == "created":
st.success(result["message"])
st.markdown(f"[View in Calendar]({result['event_link']})")
# Show alternatives if available
if "alternatives" in result and result["alternatives"]:
st.markdown("**Alternative times that would also work:**")
for i, alt in enumerate(result["alternatives"]):
if isinstance(alt, dict) and 'start' in alt:
start_dt = datetime.fromisoformat(alt['start'].replace('Z', '+00:00'))
st.write(f"{i+1}. {start_dt.strftime('%A, %b %d at %I:%M %p')}")
elif result["status"] == "rescheduled":
st.warning(result["message"])
st.markdown(f"[View in Calendar]({result['event_link']})")
elif result["status"] == "suggestions":
st.info(result["message"])
for i, slot in enumerate(result["slots"]):
st.write(f"{i+1}. {slot}")
else:
st.error(result["message"])
except Exception as e:
st.error(f"Error: {str(e)}")
st.info("Try restarting the application if the issue persists.")
# Main app logic
if 'authenticated' not in st.session_state:
st.session_state['authenticated'] = False
# Add logout button in sidebar
if st.session_state['authenticated']:
if st.sidebar.button("Logout"):
st.session_state['authenticated'] = False
if 'user_token' in st.session_state:
del st.session_state['user_token']
st.rerun()
# Show appropriate page
if st.session_state['authenticated']:
agent_page()
else:
login_page()
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