web: add api route for compact event listing for app

web/.env

@@ -1 +1,2 @@
 GRAPHQL_ENDPOINT=https://cms.neuf.no/api/graphql/
+URL=http://localhost:3000

web/src/app/api/v1/events/route.ts

@@ -0,0 +1,93 @@
+import { NextRequest, NextResponse } from "next/server";
+import { getClient } from "@/app/client";
+import {
+  eventsOverviewQuery,
+  getSingularEvents,
+  getFutureOccurrences,
+  EventFragment,
+  EventCategory,
+  EventOrganizer,
+} from "@/lib/event";
+import { VenueFragment } from "@/gql/graphql";
+
+type CompactEvent = {
+  id: string;
+  slug: string;
+  title: string;
+  subtitle: string;
+  nextOccurrence: {
+    id: string;
+    start: string;
+    end?: string;
+    venue: {
+      id: string;
+      slug: string;
+      title: string;
+      preposition: string;
+      url: string;
+    };
+  };
+};
+
+type ResponseData = {
+  events: CompactEvent[];
+  total: number;
+};
+
+const whitelistFilter = (obj: Record<string, any>, whitelist: string[]) =>
+  Object.entries(obj)
+    .filter(([key, value]) => whitelist.includes(key))
+    .reduce(
+      (obj: Record<string, any>, [key, value]) => ((obj[key] = value), obj),
+      {}
+    );
+
+export async function GET(req: NextRequest, res: NextResponse<ResponseData>) {
+  const searchParams = req.nextUrl.searchParams;
+  const view = searchParams.get("view");
+
+  if (view !== "compact-app") {
+    return NextResponse.json(
+      { error: "must provide valid view parameter" },
+      { status: 400 }
+    );
+  }
+
+  const { data, error } = await getClient().query(eventsOverviewQuery, {});
+  if (error) {
+    throw new Error(error.message);
+  }
+  if (
+    !data?.index ||
+    !data?.events?.futureEvents ||
+    !data?.eventCategories ||
+    !data?.eventOrganizers ||
+    !data?.venues
+  ) {
+    throw new Error("Failed to fetch events");
+  }
+
+  const futureEvents = (data?.events?.futureEvents ?? []) as EventFragment[];
+  const eventCategories = (data?.eventCategories ?? []) as EventCategory[];
+  const eventOrganizers = (data?.eventOrganizers ?? []) as EventOrganizer[];
+  const venues = (data?.venues ?? []) as VenueFragment[];
+
+  const keepKeys = ["id", "slug", "title", "subtitle", "occurrence"];
+  const compactEvents = futureEvents.map((event) => {
+    const futureOccurrences = getFutureOccurrences(event);
+    const nextOccurrence = futureOccurrences.length
+      ? futureOccurrences[0]
+      : null;
+
+    return {
+      url: `${process.env.URL}/arrangementer/${event.slug}`,
+      nextOccurrence: nextOccurrence,
+      ...whitelistFilter(event, keepKeys),
+    };
+  });
+
+  return NextResponse.json(
+    { events: compactEvents, total: compactEvents.length },
+    { status: 200 }
+  );
+}