change: now updates events already scraped if pased in with the --event option

src/logic.js

@@ -105,7 +105,12 @@ const get_past_events_from_page = pathOr(
   'data.page.past_events'.split('.'),
 );
 
-const merge_edges = unionWith(eqBy(prop('event_id')));
+const merge_edges = (acc, current) => {
+  return [
+    ...acc.filter((event) => event.event_id !== current.event_id),
+    current,
+  ];
+};
 
 const write_image = (path, image) =>
   fs.writeFile(path, image, { encoding: null });
@@ -227,6 +232,7 @@ const load_event = async (page, event_id) => {
     return { image };
   } catch (e) {
     console.error(e);
+    return {};
   }
 };
 

src/scrape.js

@@ -1,4 +1,4 @@
-const { pathOr } = require('ramda');
+const { pathOr, uniqBy, eqBy, prop, union } = require('ramda');
 
 const {
   create_images_directory,
@@ -27,51 +27,45 @@ const {
     create_images_directory(image_directory);
   }
 
-  const previous_events = await read_previous_events(event_file);
-  const browser = await open_browser({ headless });
-
   let events = [];
 
+  const browser = await open_browser({ headless });
+
   for (let page_id of page_ids) {
+    let page_events = [];
     try {
-      const new_events = await get_page_events(
+      page_events = await get_page_events(
         browser,
         page_id,
         get_upcoming_events,
         get_past_events,
       );
-      events = merge_edges(new_events, events);
     } catch (e) {
       console.error(e);
-      events = previous_events;
     }
-    events = events.filter(
-      ({ event_id }) =>
-        previous_events.find(
-          (previous_event) => event_id === previous_event.event_id,
-        ) === undefined,
-    );
     if (images) {
-      events = await Promise.all(
+      page_events = await Promise.all(
-        events.map(async (event) => {
+        page_events.map(async (event) => {
           const event_page = await browser.newPage();
           const { image } = await load_event(event_page, event.event_id);
-          event_page.close();
+          await event_page.close();
           const images = await save_images(
             image,
             event.event_id,
             image_directory,
           );
-          return {
+          return { images, ...event };
-            images,
-            ...event,
-          };
         }),
       );
     }
+
+    events = uniqBy(eqBy(prop('event_id')))(union(events, page_events));
   }
 
-  let all_events = merge_edges(events, previous_events)
+  const previous_events = await read_previous_events(event_file);
+
+  let all_events = events
+    .reduce(merge_edges, previous_events)
     .map((event) => {
       const start = pathOr(null, ['date', 'start'], event);
       if (start !== null) {