feat: validator decorator

hydro/script/rating.ts

@@ -0,0 +1,28 @@
+import { ObjectID } from 'mongodb';
+import * as contest from '../model/contest';
+import * as user from '../model/user';
+import rating from '../lib/rating';
+
+export const description = 'Calculate the rating of a contest';
+
+export async function run({ domainId, contestId }) {
+    contestId = new ObjectID(contestId);
+    const tdoc = await contest.get(domainId, contestId);
+    const tsdocs = await contest.getMultiStatus(domainId, { docId: contestId })
+        .sort(contest.RULES[tdoc.rule].statusSort).toArray();
+    const udict = await user.getList(domainId, tsdocs.map((tsdoc) => tsdoc.uid));
+    const rankedTsdocs = contest.RULES[tdoc.rule].rank(tsdocs);
+    const users = [];
+    for (const result of rankedTsdocs) {
+        users.push({ ...result[1], rank: result[0], old: udict[result[1].uid].rating || 1500 });
+    }
+    const rated = rating(users);
+    return rated;
+}
+
+export const validate = {
+    domainId: { $type: 'string' },
+    contestId: { $type: ObjectID },
+};
+
+global.Hydro.script.rating = { run, description, validate };