import to google calendar

Author: magdalena-grubesa

my_studysmart.xlsx

@@ -2,4 +2,4 @@
     build_schedule,
     generate_tips
 )
-from .google_calendar import import_commitments_from_google_calendar
+from .google_calendar import (import_commitments_from_google_calendar, export_schedule_to_google_calendar)

src/study_smart/__init__.py

@@ -43,7 +43,7 @@
                     dbc.Row([
                         dbc.Col(dbc.Button("💾 Save", id="save-button", color="secondary", size="sm")),
                         dbc.Col(dbc.Button("📂 Load", id="load-button", color="secondary", size="sm")),
-                        dbc.Col(html.Div(id="save-status"), width="auto"), 
+                          dbc.Col(html.Div(id="save-status"), width="auto"), 
                     ], className="mb-3"),
                     html.Div(id="exam-table")
                 ], width=6)
@@ -87,6 +87,8 @@
                         className="mt-2"
                     ),
                     dbc.Button("Generate / Regenerate schedule", id="generate-button", color="success", className="mt-3 mb-3"),
+                    dbc.Button("📅 Export to Google Calendar", id="export-calendar-button", color="info", className="mt-3 mb-3"),
+                    html.Div(id="export-calendar-status"),
                     html.Div(id="warnings-div"),
                     dcc.Graph(id="schedule-chart"),
                     html.Div(id="legend-div"),
@@ -544,8 +546,31 @@ def import_from_google_calendar(n_clicks, start_date):
 
     except Exception as e:
         return dbc.Alert(f"Could not import: {str(e)}", color="danger"), "📅 Import from Google Calendar"
+    
+# Callback — export to Google Calendar
+@app.callback(
+    Output("export-calendar-status", "children"),
+    Output("export-calendar-button", "children"),
+    Input("export-calendar-button", "n_clicks"),
+    State("schedule-store", "data"),
+    prevent_initial_call=True
+)
+def export_to_google_calendar(n_clicks, stored_schedule):
+    try:
+        from study_smart.google_calendar import export_schedule_to_google_calendar
+
+        if not stored_schedule:
+            return dbc.Alert("Please generate a schedule first!", color="warning"), "📅 Export to Google Calendar"
+
+        schedule = pd.DataFrame(stored_schedule)
+        schedule["date"] = pd.to_datetime(schedule["date"]).dt.date
 
+        count = export_schedule_to_google_calendar(schedule)
+        return dbc.Alert(f"✅ {count} events added to Google Calendar!", color="success"), "📅 Export to Google Calendar"
 
+    except Exception as e:
+        return dbc.Alert(f"Could not export: {str(e)}", color="danger"), "📅 Export to Google Calendar"
+    
 # Callback — navigate weeks
 @app.callback(
     Output("current-week-store", "data"),

src/study_smart/app.py

@@ -1,7 +1,7 @@
 """
 Google Calendar integration for StudySmart.
 
-Provides functions to import calendar events as study commitments
+Provides functions to import and export calendar events as study commitments
 using the Google Calendar API with OAuth 2.0 authentication.
 
 Note: Requires credentials.json in the repository root. See README
@@ -15,7 +15,7 @@
 from google_auth_oauthlib.flow import InstalledAppFlow
 from googleapiclient.discovery import build
 
-SCOPES = ["https://www.googleapis.com/auth/calendar.readonly"]
+SCOPES = ["https://www.googleapis.com/auth/calendar"]
 
 # paths to credentials files — relative to repo root
 BASE_DIR = os.path.dirname(os.path.abspath(__file__))
@@ -115,3 +115,45 @@ def import_commitments_from_google_calendar(start_date, end_date):
     return (commitments, event_name)
 
 
+def export_schedule_to_google_calendar(schedule):
+    """
+    Export study schedule as events to Google Calendar.
+
+    Creates one all-day event per study session in the user's primary calendar.
+
+    Args:
+        schedule (pd.DataFrame): Schedule with columns 'date', 'subject', 'hours', 'type'.
+
+    Returns:
+        int: Number of events created.
+
+    Example:
+        >>> from datetime import date
+        >>> import pandas as pd
+        >>> schedule = pd.DataFrame({
+        ...     "date": [date(2026, 6, 1)],
+        ...     "subject": ["Statistics"],
+        ...     "hours": [3.0],
+        ...     "type": ["initial"]
+        ... })
+        >>> count = export_schedule_to_google_calendar(schedule)
+    """
+    service = _get_calendar_service()
+    count = 0
+
+    for _, row in schedule.iterrows():
+        label = f"📚 {row['subject']} — {row['hours']}hrs"
+        if row["type"] == "review":
+            label += " (review)"
+
+        event = {
+            "summary": label,
+            "start": {"date": str(row["date"])},
+            "end": {"date": str(row["date"])},
+            "description": f"StudySmart study session — {row['type']}"
+        }
+        service.events().insert(calendarId="primary", body=event).execute()
+        count += 1
+
+    return count
+

src/study_smart/google_calendar.py

@@ -7,6 +7,9 @@
     - Multiple events on the same day have their hours summed
     - Events without a summary fall back to 'Unnamed event'
 
+- export_schedule_to_google_calendar: event export logic
+
+
 Note: _get_calendar_service is not tested as it requires live OAuth credentials.
 All tests mock the calendar service to avoid network calls.
 """
@@ -75,4 +78,30 @@ def test_import_unnamed_event_fallback():
             start_date=date(2026, 5, 13),
             end_date=date(2026, 5, 14)
         )
-        assert event_names[date(2026, 5, 13)] == ["Unnamed event"]
+        assert event_names[date(2026, 5, 13)] == ["Unnamed event"]
+
+def test_export_to_google_calendar():
+    """Test that export creates one event per row in schedule."""
+    import pandas as pd
+    from datetime import date
+    from study_smart.google_calendar import export_schedule_to_google_calendar
+
+    with patch("study_smart.google_calendar._get_calendar_service") as mock_service:
+        mock_insert = mock_service.return_value.events.return_value.insert
+        mock_insert.return_value.execute.return_value = {}
+
+        schedule = pd.DataFrame({
+            "date": [date(2026, 6, 1), date(2026, 6, 2)],
+            "subject": ["Stats", "Stats"],
+            "hours": [3.0, 2.0],
+            "type": ["initial", "review"]
+        })
+
+        count = export_schedule_to_google_calendar(schedule)
+        assert count == 2
+        assert mock_insert.call_count == 2
+        # check first event label
+        event_body = mock_insert.call_args_list[0][1]["body"]
+        assert event_body["summary"] == "📚 Stats — 3.0hrs"
+
+