feat: split resolvePeriod

src/core/express/resolvePeriodFromRequest.ts

@@ -0,0 +1,7 @@
+import { Request } from 'express';
+import { CYCLIC_API } from '../../constants/cyclic.js';
+import resolvePeriodFromURL from './resolvePeriodFromURL.js';
+
+export default function resolvePeriodFromRequest(request: Request) {
+  return resolvePeriodFromURL(`${CYCLIC_API}${request.path}`);
+}

src/core/express/resolvePeriodFromURL.ts

@@ -0,0 +1,43 @@
+import getPeriodNow from '../blitzstars/getPeriodNow.js';
+import getPeriodStart from '../blitzstars/getPeriodStart.js';
+import getTimeDaysAgo from '../blitzstars/getTimeDaysAgo.js';
+import { Period } from '../discord/addPeriodSubCommands.js';
+import {
+  EVOLUTION_PERIOD_NAMES,
+  PERIOD_NAMES,
+  ResolvedPeriod,
+} from '../discord/resolvePeriodFromCommand.js';
+
+export default function resolvePeriodFromURL(urlString: string) {
+  let statsName: string;
+  let evolutionName: string;
+  let start: number;
+  let end: number;
+  const url = new URL(urlString);
+  const path = url.pathname.split('/').filter(Boolean);
+  const period = path[path.length - 1] as Period;
+
+  if (period === 'custom') {
+    const startRaw = parseInt(url!.searchParams.get('start')!);
+    const endRaw = parseInt(url!.searchParams.get('end')!);
+    const startMin = Math.min(startRaw, endRaw);
+    const endMax = Math.max(startRaw, endRaw);
+
+    statsName = `${startMin} to ${endMax} days' statistics`;
+    evolutionName = `${startMin} to ${endMax} days' evolution`;
+    start = getTimeDaysAgo(startMin);
+    end = getTimeDaysAgo(endMax);
+  } else {
+    statsName = PERIOD_NAMES[period];
+    evolutionName = EVOLUTION_PERIOD_NAMES[period];
+    start = getPeriodStart(period);
+    end = getPeriodNow();
+  }
+
+  return {
+    statsName,
+    evolutionName,
+    start,
+    end,
+  } satisfies ResolvedPeriod;
+}