core: problem.import: add delSource option

packages/hydrooj/src/handler/import.ts

@@ -19,7 +19,12 @@ class ProblemImportHydroHandler extends Handler {
         if (preferredPrefix && !/^[a-zA-Z]+$/.test(preferredPrefix)) throw new ValidationError('preferredPrefix');
         const promise = problem.import(
             domainId, this.request.files.file.filepath,
-            { preferredPrefix, progress: this.progress.bind(this), operator: keepUser ? null : this.user._id },
+            {
+                preferredPrefix,
+                progress: this.progress.bind(this),
+                operator: keepUser ? null : this.user._id,
+                delSource: true,
+            },
         ).catch((e) => MessageModel.send(1, this.user._id, `Import failed: ${e.message}\n${e.stack}`));
         let resolved = false;
         await Promise.race([

packages/hydrooj/src/handler/problem.ts

@@ -729,7 +729,7 @@ export class ProblemFilesHandler extends ProblemDetailHandler {
             if ((this.pdoc.data?.length || 0)
                 + (this.pdoc.additional_file?.length || 0)
                 + files.length
-                >= system.get('limit.problem_files_max')) {
+                >= this.ctx.setting.get('limit.problem_files_max')) {
                 throw new FileLimitExceededError('count');
             }
             const size = Math.sum(
@@ -737,7 +737,7 @@ export class ProblemFilesHandler extends ProblemDetailHandler {
                 (this.pdoc.additional_file || []).map((i) => i.size),
                 files.map((i) => i.size),
             );
-            if (size >= system.get('limit.problem_files_max_size')) {
+            if (size >= this.ctx.setting.get('limit.problem_files_max_size')) {
                 throw new FileLimitExceededError('size');
             }
         }