模块化，添加webpack支持

hydro/handler/import.js

@@ -1,57 +1,10 @@
-const assert = require('assert');
-const download = require('../lib/download');
+
 const problem = require('../model/problem');
 const { Route, Handler } = require('../service/server');
 const { PERM_CREATE_PROBLEM } = require('../permission');
-const axios = require('../lib/axios');
-const { ValidationError, RemoteOnlineJudgeError } = require('../error');
+const { ValidationError } = require('../error');
 
 class ProblemImportHandler extends Handler {
-    async syzoj(url) {
-        const RE_SYZOJ = /https?:\/\/([a-zA-Z0-9.]+)\/problem\/([0-9]+)\/?/i;
-        assert(url.match(RE_SYZOJ), new ValidationError('url'));
-        if (!url.endsWith('/')) url += '/';
-        const [, host, pid] = RE_SYZOJ.exec(url);
-        const res = await axios.get(`${url}export`);
-        assert(res.status === 200, new RemoteOnlineJudgeError('Cannot connect to target server'));
-        assert(res.data.success, new RemoteOnlineJudgeError((res.data.error || {}).message));
-        const p = res.data.obj;
-        const content = [
-            this.translate('problem.import.problem_description'),
-            p.description,
-            this.translate('problem.import.input_format'),
-            p.input_format,
-            this.translate('problem.import.output_format'),
-            p.output_format,
-            this.translate('problem.import.hint'),
-            p.hint,
-            this.translate('problem.import.limit_and_hint'),
-            p.limit_and_hint,
-        ];
-        if (p.have_additional_file) {
-            content.push(
-                this.translate('problem.import.additional_file'),
-                `${url}download/additional_file`,
-            );
-        }
-        const pdoc = {
-            title: p.title,
-            content: content.join('  \n'),
-            owner: this.user._id,
-            from: url,
-            pid: `${host}_${pid}`,
-            config: {
-                time: p.time_limit,
-                memory: p.memory_limit * 1024,
-                filename: p.file_io_input_name,
-                type: p.type,
-                tags: p.tags,
-            },
-        };
-        const r = await download(`${url}testdata/download`);
-        return [pdoc, r];
-    }
-
     async prepare() {
         this.checkPerm(PERM_CREATE_PROBLEM);
     }
@@ -82,4 +35,10 @@ class ProblemImportHandler extends Handler {
     }
 }
 
-Route('/problem/import', ProblemImportHandler);
+async function apply() {
+    Route('/problem/import', module.exports.ProblemImportHandler);
+}
+
+global.Hydro['handler.import'] = module.exports = {
+    ProblemImportHandler, apply,
+};