feat(YDoc): implement GetYdoc query and Ydoc model

src/graphql/models/Ydoc.js

@@ -0,0 +1,19 @@
+import { GraphQLObjectType, GraphQLString, GraphQLList } from 'graphql';
+
+import YdocVersion from './YdocVersion';
+
+const Ydoc = new GraphQLObjectType({
+  name: 'Ydoc',
+  fields: () => ({
+    data: {
+      type: GraphQLString,
+      // https://www.elastic.co/guide/en/elasticsearch/reference/current/binary.html
+      description: 'Binary that stores as base64 encoded string',
+    },
+    versions: {
+      type: new GraphQLList(YdocVersion),
+    },
+  }),
+});
+
+export default Ydoc;

src/graphql/models/YdocVersion.js

@@ -0,0 +1,13 @@
+import { GraphQLObjectType, GraphQLString } from 'graphql';
+
+export default new GraphQLObjectType({
+  name: 'YdocVersion',
+  fields: () => ({
+    createdAt: { type: GraphQLString },
+    snapshot: {
+      type: GraphQLString,
+      // https://www.elastic.co/guide/en/elasticsearch/reference/current/binary.html
+      description: 'Binary that stores as base64 encoded string',
+    },
+  }),
+});

src/graphql/queries/GetYdoc.js

@@ -0,0 +1,12 @@
+import { GraphQLString } from 'graphql';
+
+import Ydoc from 'graphql/models/Ydoc';
+
+export default {
+  type: Ydoc,
+  args: {
+    id: { type: GraphQLString },
+  },
+  resolve: async (rootValue, { id }, { loaders }) =>
+    loaders.docLoader.load({ index: 'ydocs', id }),
+};

src/graphql/schema.js

@@ -5,6 +5,7 @@ import GetArticle from './queries/GetArticle';
 import GetReply from './queries/GetReply';
 import GetUser from './queries/GetUser';
 import GetCategory from './queries/GetCategory';
+import GetYdoc from './queries/GetYdoc';
 import ListArticles from './queries/ListArticles';
 import ListReplies from './queries/ListReplies';
 import ListCategories from './queries/ListCategories';
@@ -41,6 +42,7 @@ export default new GraphQLSchema({
       GetReply,
       GetUser,
       GetCategory,
+      GetYdoc,
       ListArticles,
       ListReplies,
       ListCategories,