[gnome-maps/wip/mlundblad/otp-router-url-param: 2/2] openTripPlanner: Support custom router URL

[Marcus Lundblad <mlundblad src gnome org>]

commit a1330ea03d0fae947f76f75e1e793b86a7ebbb44
Author: Marcus Lundblad <ml update uu se>
Date:   Wed Oct 2 22:18:02 2019 +0200

    openTripPlanner: Support custom router URL
    
    Add support for setting the router URL directly
    for case where <base URL>/routers/<id> doesn't
    fit, such as for TriMet.

 src/transitplugins/openTripPlanner.js | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)
---
diff --git a/src/transitplugins/openTripPlanner.js b/src/transitplugins/openTripPlanner.js
index 6b942bd..d11b67f 100644
--- a/src/transitplugins/openTripPlanner.js
+++ b/src/transitplugins/openTripPlanner.js
@@ -117,10 +117,17 @@ var OpenTripPlanner = class OpenTripPlanner {
         this._query = Application.routeQuery;
         this._baseUrl = params.baseUrl;
         this._router = params.router || 'default';
+        this._routerUrl = params.routerUrl || null;
         this._onlyTransitData = params.onlyTransitData || false;
         this._walkingRoutes = [];
         this._extendPrevious = false;
         this._language = Utils.getLanguage();
+
+        if (!this._baseUrl && !this._routerUrl)
+            throw new Error('must specify either baseUrl or routerUrl as an argument');
+
+        if (this._baseUrl && this._routerUrl)
+            throw new Error('can not specify both baseUrl and routerUrl as arguments');
     }
 
     get plan() {
@@ -142,7 +149,8 @@ var OpenTripPlanner = class OpenTripPlanner {
     }
 
     _getRouterUrl() {
-        return this._baseUrl + '/routers/' + this._router;
+        return this._routerUrl ? this._routerUrl :
+                                 this._baseUrl + '/routers/' + this._router;
     }
 
     _getMode(routeType) {