core: init graphql

packages/hydrooj/src/handler/api.ts

@@ -0,0 +1,50 @@
+import graphql from 'graphql';
+import UserModel from '../model/user';
+import { Handler, Route } from '../service/server';
+
+const schemaStr = `\
+type Query {
+    user(id: Int, uname: String, mail: String): User
+    problem(id: Int): String
+}
+
+type User {
+    _id: Int!
+    uname: String!
+    mail: String!
+}`;
+
+const schema = graphql.buildSchema(schemaStr);
+const root = {
+    user: (arg, ctx) => {
+        if (arg.id) return UserModel.getById(ctx.domainId, arg.id);
+        if (arg.mail) return UserModel.getByEmail(ctx.domainId, arg.mail);
+        if (arg.uname) return UserModel.getByUname(ctx.domainId, arg.uname);
+        return ctx.user;
+    },
+    problem: async (arg, ctx, node) => {
+    },
+};
+
+class ApiHandler extends Handler {
+    async get() {
+        const q = decodeURIComponent(this.ctx.request.querystring);
+        if (q === 'schema') {
+            this.response.body = { schema: schemaStr };
+        } else if (q) {
+            this.response.type = 'application/json';
+            this.response.body = await graphql.graphql(schema, q, root, this);
+        } else this.response.template = 'api.html';
+    }
+
+    async post() {
+        this.response.type = 'application/json';
+        this.response.body = await graphql.graphql(schema, this.args.query, root, this, this.args.variables);
+    }
+}
+
+export function apply() {
+    Route('api', '/api', ApiHandler);
+}
+
+global.Hydro.handler.api = apply;