+export const last_api_request_url_store = writable();
+export const error_store = writable();
+export const page = writable();
+
+/**
+ * Update the global page state.
+ *
+ * When called without a parameter, then the current window.location is
+ * parsed and the page state is set accordingly. Otherwise the page state
+ * is set from the parameters. 'pagename' is the overall subpage (without
+ * .html extension). 'params' must be an URLSearchParams object and contain
+ * the requested query parameters. It may also be omitted completely for a
+ * link without query parameters.
+ */
+const default_pagename = Nominatim_Config.Reverse_Only ? 'reverse' : 'search';
+const pagenames = [
+ default_pagename,
+ 'reverse',
+ 'details',
+ 'deletable',
+ 'polygons',
+ 'status',
+ 'about'
+];
+
+export function refresh_page(pagename, params) {
+ if (typeof pagename === 'undefined') {
+ pagename = window.location.pathname.replace('.html', '').replace(/^.*\//, '');
+
+ if (!pagenames.includes(pagename)) pagename = default_pagename;
+
+ params = new URLSearchParams(window.location.search);
+ } else {
+ if (!pagenames.includes(pagename)) pagename = default_pagename;
+
+ if (typeof params === 'undefined') {
+ params = new URLSearchParams();
+ }
+
+ let param_str = params.toString();
+ if (param_str) {
+ param_str = '?' + param_str;
+ }
+ let new_url = pagename + '.html' + param_str;
+
+ if (window.location.protocol.match(/^http/)) {
+ window.history.pushState([], '', new_url);
+ } else {
+ window.location.href = new_url;
+ }
+ }
+
+ if (pagename === 'search' && params.has('q')) {
+ const arrTypeAndId = identifyLinkInQuery(params.get('q'));
+ if (arrTypeAndId instanceof Array) {
+ pagename = 'details';
+ params = new URLSearchParams();
+ params.set('osmtype', arrTypeAndId[0]);
+ params.set('osmid', arrTypeAndId[1]);
+ }
+ }
+
+ page.set({ tab: pagename, params: params });
+ last_api_request_url_store.set(null);
+ error_store.set(null);
+}