Implement Schengen Area Compliance Report

How many close am I to 90 days in the last 180.

Fixes #193.

agenda/types.py

@@ -2,6 +2,7 @@
 
 import collections
 import datetime
+from datetime import date
 import functools
 import typing
 from collections import defaultdict
@@ -65,6 +66,7 @@ class Trip:
     flight_bookings: list[StrDict] = field(default_factory=list)
     name: str | None = None
     private: bool = False
+    schengen_compliance: typing.Optional["SchengenCalculation"] = None
 
     @property
     def title(self) -> str:
@@ -365,3 +367,37 @@ class Holiday:
             if self.local_name and self.local_name != self.name
             else self.name
         )
+
+
+@dataclass
+class SchengenStay:
+    """Represents a stay in the Schengen area."""
+
+    entry_date: date
+    exit_date: typing.Optional[date]  # None if currently in Schengen
+    country: str
+    days: int
+
+    def __post_init__(self) -> None:
+        if self.exit_date is None:
+            # Currently in Schengen, calculate days up to today
+            self.days = (date.today() - self.entry_date).days + 1
+        else:
+            self.days = (self.exit_date - self.entry_date).days + 1
+
+
+@dataclass
+class SchengenCalculation:
+    """Result of Schengen time calculation."""
+
+    total_days_used: int
+    days_remaining: int
+    is_compliant: bool
+    current_180_day_period: tuple[date, date]  # (start, end)
+    stays_in_period: list["SchengenStay"]
+    next_reset_date: typing.Optional[date]  # When the 180-day window resets
+
+    @property
+    def days_over_limit(self) -> int:
+        """Days over the 90-day limit."""
+        return max(0, self.total_days_used - 90)

templates/macros.html

@@ -351,6 +351,18 @@
       <div>Total CO₂: {{ "{:,.1f}".format(total_co2_kg) }} kg</div>
     {% endif %}
 
+    {% if trip.schengen_compliance %}
+      <div>
+        <strong>Schengen:</strong>
+        {% if trip.schengen_compliance.is_compliant %}
+          <span class="badge bg-success">✅ Compliant</span>
+        {% else %}
+          <span class="badge bg-danger">❌ Non-compliant</span>
+        {% endif %}
+        <span class="text-muted small">({{ trip.schengen_compliance.total_days_used }}/90 days used)</span>
+      </div>
+    {% endif %}
+
     {{ conference_list(trip) }}
 
     {% for day, elements in trip.elements_grouped_by_day() %}

templates/navbar.html

@@ -14,6 +14,7 @@
   {"endpoint": "weekends", "label": "Weekends" },
   {"endpoint": "launch_list", "label": "Space launches" },
   {"endpoint": "holiday_list", "label": "Holidays" },
+  {"endpoint": "schengen_report", "label": "Schengen" },
   ] + ([{"endpoint": "birthday_list", "label": "Birthdays" }]
     if g.user.is_authenticated else [])
   %}

templates/schengen_report.html

@@ -0,0 +1,211 @@
+{% extends "base.html" %}
+
+{% set heading = "Schengen Area Compliance Report" %}
+
+{% block title %}{{ heading }} - Edward Betts{% endblock %}
+
+{% block content %}
+<div class="container-fluid">
+  <h1>Schengen Area Compliance Report</h1>
+  
+  <div class="row">
+    <div class="col-md-8">
+      <div class="card mb-4">
+        <div class="card-header">
+          <h5 class="card-title">Current Status</h5>
+        </div>
+        <div class="card-body">
+          <div class="row">
+            <div class="col-md-6">
+              <h6>Compliance Status</h6>
+              {% if current_compliance.is_compliant %}
+                <span class="badge bg-success fs-6">✅ COMPLIANT</span>
+              {% else %}
+                <span class="badge bg-danger fs-6">❌ NON-COMPLIANT</span>
+              {% endif %}
+            </div>
+            <div class="col-md-6">
+              <h6>Days Used</h6>
+              <div class="fs-4">{{ current_compliance.total_days_used }}/90</div>
+            </div>
+          </div>
+          
+          <div class="row mt-3">
+            <div class="col-md-6">
+              {% if current_compliance.is_compliant %}
+                <h6>Days Remaining</h6>
+                <div class="fs-5 text-success">{{ current_compliance.days_remaining }}</div>
+              {% else %}
+                <h6>Days Over Limit</h6>
+                <div class="fs-5 text-danger">{{ current_compliance.days_over_limit }}</div>
+              {% endif %}
+            </div>
+            <div class="col-md-6">
+              {% if current_compliance.next_reset_date %}
+                <h6>Next Reset Date</h6>
+                <div class="fs-6">{{ current_compliance.next_reset_date.strftime('%Y-%m-%d') }}</div>
+              {% endif %}
+            </div>
+          </div>
+          
+          <div class="mt-3">
+            <h6>Current 180-day Period</h6>
+            <div class="text-muted">
+              {{ current_compliance.current_180_day_period[0].strftime('%Y-%m-%d') }} to 
+              {{ current_compliance.current_180_day_period[1].strftime('%Y-%m-%d') }}
+            </div>
+          </div>
+        </div>
+      </div>
+
+      {% if current_compliance.stays_in_period %}
+      <div class="card mb-4">
+        <div class="card-header">
+          <h5 class="card-title">Stays in Current 180-day Period</h5>
+        </div>
+        <div class="card-body">
+          <div class="table-responsive">
+            <table class="table table-striped">
+              <thead>
+                <tr>
+                  <th>Entry Date</th>
+                  <th>Exit Date</th>
+                  <th>Country</th>
+                  <th>Days</th>
+                </tr>
+              </thead>
+              <tbody>
+                {% for stay in current_compliance.stays_in_period %}
+                <tr>
+                  <td>{{ stay.entry_date.strftime('%Y-%m-%d') }}</td>
+                  <td>
+                    {% if stay.exit_date %}
+                      {{ stay.exit_date.strftime('%Y-%m-%d') }}
+                    {% else %}
+                      <span class="text-muted">ongoing</span>
+                    {% endif %}
+                  </td>
+                  <td>{{ stay.country | country_flag }} {{ stay.country.upper() }}</td>
+                  <td>{{ stay.days }}</td>
+                </tr>
+                {% endfor %}
+              </tbody>
+            </table>
+          </div>
+        </div>
+      </div>
+      {% endif %}
+    </div>
+
+    <div class="col-md-4">
+      {% if warnings %}
+      <div class="card mb-4">
+        <div class="card-header">
+          <h5 class="card-title">Warnings</h5>
+        </div>
+        <div class="card-body">
+          {% for warning in warnings %}
+          <div class="alert alert-{{ 'danger' if warning.severity == 'error' else 'warning' }} alert-dismissible fade show" role="alert">
+            <strong>{{ warning.date.strftime('%Y-%m-%d') }}</strong><br>
+            {{ warning.message }}
+            <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
+          </div>
+          {% endfor %}
+        </div>
+      </div>
+      {% endif %}
+
+      <div class="card">
+        <div class="card-header">
+          <h5 class="card-title">Compliance History</h5>
+        </div>
+        <div class="card-body">
+          <div class="chart-container" style="height: 300px;">
+            <canvas id="complianceChart"></canvas>
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+
+  {% if trips_with_compliance %}
+  <div class="card mt-4">
+    <div class="card-header">
+      <h5 class="card-title">Trip Compliance History</h5>
+    </div>
+    <div class="card-body">
+      <div class="table-responsive">
+        <table class="table table-striped">
+          <thead>
+            <tr>
+              <th>Trip Date</th>
+              <th>Days Used</th>
+              <th>Days Remaining</th>
+              <th>Status</th>
+            </tr>
+          </thead>
+          <tbody>
+            {% for trip_date, calculation in trips_with_compliance.items() %}
+            <tr>
+              <td>{{ trip_date.strftime('%Y-%m-%d') }}</td>
+              <td>{{ calculation.total_days_used }}/90</td>
+              <td>{{ calculation.days_remaining }}</td>
+              <td>
+                {% if calculation.is_compliant %}
+                  <span class="badge bg-success">Compliant</span>
+                {% else %}
+                  <span class="badge bg-danger">Non-compliant</span>
+                {% endif %}
+              </td>
+            </tr>
+            {% endfor %}
+          </tbody>
+        </table>
+      </div>
+    </div>
+  </div>
+  {% endif %}
+</div>
+{% endblock %}
+
+{% block scripts %}
+<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
+<script>
+const ctx = document.getElementById('complianceChart').getContext('2d');
+const complianceHistory = {{ compliance_history | tojson }};
+
+const chart = new Chart(ctx, {
+    type: 'line',
+    data: {
+        labels: complianceHistory.map(item => item.date),
+        datasets: [{
+            label: 'Days Used',
+            data: complianceHistory.map(item => item.days_used),
+            borderColor: 'rgb(75, 192, 192)',
+            backgroundColor: 'rgba(75, 192, 192, 0.2)',
+            tension: 0.1
+        }]
+    },
+    options: {
+        responsive: true,
+        maintainAspectRatio: false,
+        scales: {
+            y: {
+                beginAtZero: true,
+                max: 90,
+                ticks: {
+                    callback: function(value) {
+                        return value + '/90';
+                    }
+                }
+            }
+        },
+        plugins: {
+            legend: {
+                display: true
+            }
+        }
+    }
+});
+</script>
+{% endblock %}

templates/trip_page.html

@@ -117,6 +117,25 @@
     {% if delta %}
       <div>How long until trip: {{ delta }}</div>
     {% endif %}
+    
+    {% if trip.schengen_compliance %}
+      <div class="mt-3">
+        <strong>Schengen Compliance:</strong>
+        {% if trip.schengen_compliance.is_compliant %}
+          <span class="badge bg-success">✅ Compliant</span>
+        {% else %}
+          <span class="badge bg-danger">❌ Non-compliant</span>
+        {% endif %}
+        <div class="text-muted small">
+          {{ trip.schengen_compliance.total_days_used }}/90 days used
+          {% if trip.schengen_compliance.is_compliant %}
+            ({{ trip.schengen_compliance.days_remaining }} remaining)
+          {% else %}
+            ({{ trip.schengen_compliance.days_over_limit }} over limit)
+          {% endif %}
+        </div>
+      </div>
+    {% endif %}
     </div>
 
     {% for item in trip.conferences %}

web_view.py

@@ -25,6 +25,7 @@ import agenda.holidays
 import agenda.stats
 import agenda.thespacedevs
 import agenda.trip
+import agenda.trip_schengen
 import agenda.utils
 from agenda import calendar, format_list_with_ampersand, travel, uk_tz
 from agenda.types import StrDict, Trip
@@ -36,6 +37,13 @@ app.config.from_object("config.default")
 agenda.error_mail.setup_error_mail(app)
 
 
+@app.template_filter("country_flag")
+def country_flag_filter(country_code: str) -> str:
+    """Convert country code to emoji flag."""
+    from agenda.schengen import get_country_flag
+    return get_country_flag(country_code)
+
+
 @app.before_request
 def handle_auth() -> None:
     """Handle authentication and set global user."""
@@ -387,11 +395,17 @@ def get_trip_list(
     route_distances: agenda.travel.RouteDistances | None = None,
 ) -> list[Trip]:
     """Get list of trips respecting current authentication status."""
-    return [
+    trips = [
         trip
         for trip in agenda.trip.build_trip_list(route_distances=route_distances)
         if flask.g.user.is_authenticated or not trip.private
     ]
+    
+    # Add Schengen compliance information to each trip
+    for trip in trips:
+        agenda.trip_schengen.add_schengen_compliance_to_trip(trip)
+    
+    return trips
 
 
 @app.route("/trip")
@@ -527,6 +541,9 @@ def trip_page(start: str) -> str:
     prev_trip, trip, next_trip = get_prev_current_and_next_trip(start, trip_list)
     if not trip:
         flask.abort(404)
+    
+    # Add Schengen compliance information
+    trip = agenda.trip_schengen.add_schengen_compliance_to_trip(trip)
 
     coordinates = agenda.trip.collect_trip_coordinates(trip)
     routes = agenda.trip.get_trip_routes(trip, app.config["PERSONAL_DATA"])
@@ -603,6 +620,12 @@ def trip_stats() -> str:
     )
 
 
+@app.route("/schengen")
+def schengen_report() -> str:
+    """Schengen compliance report."""
+    return agenda.trip_schengen.flask_route_schengen_report()
+
+
 @app.route("/callback")
 def auth_callback() -> tuple[str, int] | werkzeug.Response:
     """Process the authentication callback."""