Add exclusions feature: map popup Exclude button, exclusions page, server API

web/server.py

@@ -426,7 +426,7 @@ def serve_data(filename):
 
 # ── Config file download / upload ──────────────────────────────────────────────
 
-_ALLOWED_CONFIGS = {'counties.yml', 'exceptions.yml'}
+_ALLOWED_CONFIGS = {'counties.yml', 'exceptions.yml', 'exclusions.yml'}
 
 @app.route('/api/config/<filename>', methods=['GET'])
 @require_auth
@@ -450,6 +450,8 @@ def upload_config(filename):
             return jsonify({'error': 'Invalid counties.yml: missing counties list'}), 400
         if filename == 'exceptions.yml' and not isinstance((data or {}).get('corrections'), list):
             return jsonify({'error': 'Invalid exceptions.yml: missing corrections list'}), 400
+        if filename == 'exclusions.yml' and not isinstance((data or {}).get('exclusions'), list):
+            return jsonify({'error': 'Invalid exclusions.yml: missing exclusions list'}), 400
     except Exception as e:
         return jsonify({'error': f'Invalid YAML: {e}'}), 400
     dest = f'/data/{filename}'
@@ -459,6 +461,80 @@ def upload_config(filename):
     os.replace(tmp, dest)
     return jsonify({'success': True})
 
+# ── Exclusions config ─────────────────────────────────────────────────────────
+
+EXCLUSIONS_FILE = '/data/exclusions.yml'
+
+
+def _ensure_exclusions_file():
+    if not os.path.exists(EXCLUSIONS_FILE):
+        os.makedirs(os.path.dirname(EXCLUSIONS_FILE), exist_ok=True)
+        with open(EXCLUSIONS_FILE, 'w') as f:
+            yaml.dump({'exclusions': []}, f, default_flow_style=False, allow_unicode=True)
+
+_ensure_exclusions_file()
+
+
+def get_exclusions():
+    try:
+        with open(EXCLUSIONS_FILE) as f:
+            data = yaml.safe_load(f) or {}
+        return data.get('exclusions', [])
+    except Exception:
+        return []
+
+
+@app.route('/exclusions')
+def exclusions_page():
+    return render_template('exclusions.html', current_user=session.get('username'))
+
+
+@app.route('/api/exclusions', methods=['GET'])
+def get_exclusions_api():
+    return jsonify({'exclusions': get_exclusions()})
+
+
+@app.route('/api/exclusions', methods=['POST'])
+@require_auth
+def save_exclusions():
+    data = request.json
+    items = data.get('exclusions', [])
+    for item in items:
+        if not isinstance(item.get('field'), str) or not item['field'].strip():
+            return jsonify({'error': 'Each exclusion must have a non-empty "field"'}), 400
+        if not isinstance(item.get('value'), str) or not item['value'].strip():
+            return jsonify({'error': 'Each exclusion must have a non-empty "value"'}), 400
+    tmp = EXCLUSIONS_FILE + '.tmp'
+    with open(tmp, 'w') as f:
+        yaml.dump({'exclusions': items}, f, default_flow_style=False, allow_unicode=True)
+    os.replace(tmp, EXCLUSIONS_FILE)
+    return jsonify({'success': True})
+
+
+@app.route('/api/exclusions/add', methods=['POST'])
+@require_auth
+def add_exclusions():
+    """Append new exclusion entries, skipping duplicates."""
+    data = request.json
+    new_items = data.get('exclusions', [])
+    existing = get_exclusions()
+    existing_keys = {(e['field'], e['value']) for e in existing}
+    added = 0
+    for item in new_items:
+        field = (item.get('field') or '').strip()
+        value = (item.get('value') or '').strip()
+        if not field or not value:
+            continue
+        if (field, value) not in existing_keys:
+            existing.append({'field': field, 'value': value})
+            existing_keys.add((field, value))
+            added += 1
+    tmp = EXCLUSIONS_FILE + '.tmp'
+    with open(tmp, 'w') as f:
+        yaml.dump({'exclusions': existing}, f, default_flow_style=False, allow_unicode=True)
+    os.replace(tmp, EXCLUSIONS_FILE)
+    return jsonify({'success': True, 'added': added})
+
 # ── Counties config ────────────────────────────────────────────────────────────
 
 COUNTIES_FILE = '/data/counties.yml'