First draft of toxic-comments

plugins/talk-plugin-toxic-comments/server/hooks.js

@@ -0,0 +1,37 @@
+const perspective = require('./perspective');
+const {ADD_COMMENT_TAG} = require('../../../perms/constants');
+const {ErrToxic} = require('./errors');
+const {TOXICITY_THRESHOLD} = require('./constants');
+
+module.exports = {
+  Comment: {
+    tags: {
+      post(comment, input, {user}, _info, result) {
+        if (comment.metadata.perspective && user && user.can(ADD_COMMENT_TAG)) {
+          return result.concat({tag: {name: 'TOXIC', created_at: new Date()}});
+        }
+        return result;
+      }
+    },
+  },
+  RootMutation: {
+    createComment: {
+      async pre(_, {input}, _context, _info) {
+
+        // Don't call out to perspective when running tests.
+        if (process.env.NODE_ENV === 'test') {
+          return;
+        }
+
+        const apiKey = require('./apiKey');
+        const scores = await perspective.getScores(apiKey, input.body);
+        if (input.checkToxicity && scores.SEVERE_TOXICITY.summaryScore > TOXICITY_THRESHOLD) {
+          throw ErrToxic;
+        }
+        input.metadata = Object.assign({}, input.metadata, {
+          perspective: scores,
+        });
+      },
+    },
+  },
+};