core: validator: support 'convert' as default action

fix #505, close #506

packages/hydrooj/src/handler/contest.ts

@@ -385,12 +385,12 @@ export class ContestEditHandler extends Handler {
     @param('pids', Types.Content)
     @param('rated', Types.Boolean)
     @param('code', Types.String, true)
-    @param('autoHide', Types.Boolean, true)
+    @param('autoHide', Types.Boolean)
     @param('assign', Types.CommaSeperatedArray, true)
     @param('lock', Types.UnsignedInt, true)
     @param('contestDuration', Types.Float, true)
     @param('maintainer', Types.NumericArray, true)
-    @param('allowViewCode', Types.Boolean, true)
+    @param('allowViewCode', Types.Boolean)
     async postUpdate(
         domainId: string, tid: ObjectID, beginAtDate: string, beginAtTime: string, duration: number,
         title: string, content: string, rule: string, _pids: string, rated = false,

packages/hydrooj/src/handler/discussion.ts

@@ -358,7 +358,7 @@ class DiscussionRawHandler extends DiscussionHandler {
     @param('drid', Types.ObjectID, true)
     @param('drrid', Types.ObjectID, true)
     @param('time', Types.UnsignedInt, true)
-    @param('all', Types.Boolean, true)
+    @param('all', Types.Boolean)
     async get(domainId: string, did: ObjectID, drid: ObjectID, drrid: ObjectID, ts: number, all = false) {
         if (all) {
             this.response.body.history = await discussion.getHistory(domainId, drrid || drid || did);

packages/hydrooj/src/handler/manage.ts

@@ -297,7 +297,7 @@ class SystemUserPrivHandler extends SystemHandler {
     @requireSudo
     @param('uid', Types.Int)
     @param('priv', Types.UnsignedInt)
-    @param('system', Types.Boolean, true)
+    @param('system', Types.Boolean)
     async post(domainId: string, uid: number, priv: number, editSystem: boolean) {
         if (!editSystem) {
             const udoc = await user.getById(domainId, uid);

packages/hydrooj/src/handler/problem.ts

@@ -379,7 +379,7 @@ export class ProblemDetailHandler extends ContestDetailBaseHandler {
     }
 
     @query('tid', Types.ObjectID, true)
-    @query('pjax', Types.Boolean, true)
+    @query('pjax', Types.Boolean)
     async get(...args: any[]) {
         // Navigate to current additional file download
         // e.g. ![img](a.jpg) will navigate to ![img](./pid/file/a.jpg)

packages/hydrooj/src/handler/record.ts

@@ -32,7 +32,7 @@ class RecordListHandler extends ContestDetailBaseHandler {
     @param('lang', Types.String, true)
     @param('status', Types.Int, true)
     @param('fullStatus', Types.Boolean)
-    @param('allDomain', Types.Boolean, true)
+    @param('allDomain', Types.Boolean)
     async get(
         domainId: string, page = 1, pid?: string | number, tid?: ObjectID,
         uidOrName?: string, lang?: string, status?: number, full = false,