Add location search and polish running route planner

app/planner.py

@@ -6,7 +6,7 @@ from flask_login import current_user, login_required
 
 from .extensions import db, limiter
 from .models import PlannedRoute
-from .planner_engine import PlannerError, generate, validate
+from .planner_engine import PlannerError, generate, search_locations, validate
 
 planner = Blueprint("planner", __name__, url_prefix="/routes")
 
@@ -62,6 +62,19 @@ def candidates():
     return jsonify(routes=[serialise(row) for row in rows], warnings=warnings)
 
 
+@planner.post("/search")
+@login_required
+@limiter.limit("30 per minute; 600 per day")
+def search():
+    try:
+        locations = search_locations(
+            request.get_json(silent=True), current_app.config.get("ORS_API_KEY")
+        )
+    except PlannerError as error:
+        return jsonify(error=str(error)), 400
+    return jsonify(locations=locations)
+
+
 @planner.get("/<int:route_id>")
 @login_required
 def detail(route_id):