loadable.jsx: Show modal on API limit exceed

This shows a modal with error message on exceeding API limit.

Closes coala#127

Author: 123vivekr

src/components/loadable.jsx

@@ -1,5 +1,6 @@
 import {Component} from 'react';
 import {SyncIcon} from 'react-octicons';
+import * as BS from 'react-bootstrap';
 
 const STATUS = {
   INITIAL: 'initial',
@@ -9,36 +10,45 @@ const STATUS = {
 
 class Loadable extends Component {
   static defaultProps = {
-    renderError: (err) => {
+    renderError: (err, show, close) => {
       console.error(err);
-      // If it is a permissions error then it might be a rate limi
-      if (err.status === 403) {
-        return (
-          <div>
-            <h2>Insufficient Permissions (or rate limit exceeded)</h2>
-            <p>
-              It looks like either you do not have permission to see this repository or the rate limit for requests to GitHub has been exceeded. This usually happens when you are not logged in to gh-board. Try signing in to continue.
-            </p>
-            <code>{err.message}</code>
-          </div>
-        );
-      } else if (err.name === 'InvalidStateError') {
+      // If it is a permissions error then it might be a rate limit
+      if (err.name === 'InvalidStateError') {
         return (
           <span>It looks like your browser is in private browsing mode. gh-board uses IndexedDB to cache requests to GitHub. Please disable Private Browsing to see it work.</span>
         );
       } else {
+        let message;
+        if(err.status === 403)
+          message = "It looks like either you do not have permission to see this repository or the rate limit for requests to GitHub has been exceeded. This usually happens when you are not logged in to gh-board. Try signing in to continue.";
+        else
+          message = "Problem loading. Is it a valid repo? And have you exceeded your number of requests? Usually happens when not logged in because GitHub limits anonymous use of their API.";
         return (
-          <span>
-            Problem loading. Is it a valid repo? And have you exceeded your number of requests? Usually happens when not logged in because GitHub limits anonymous use of their API.
-            {err.message}
-            {JSON.stringify(err)}
-          </span>
+          <BS.Modal show={show}>
+            <BS.Modal.Header>
+            </BS.Modal.Header>
+            <BS.Modal.Body >
+              <div>
+                <p>
+                  {message}
+                </p>
+                <code>
+                  {JSON.parse(err.message).message}
+                  <br />
+                  <a href={JSON.parse(err.message).documentation_url}>Documentation URL</a>
+                </code>
+                <br />
+                <br />
+                <BS.Button onClick={close}>OK</BS.Button>
+              </div>
+            </BS.Modal.Body>
+          </BS.Modal>
         );
       }
     }
   };
 
-  state = {status: STATUS.INITIAL, value: null};
+  state = {status: STATUS.INITIAL, value: null, show: false};
 
   componentDidMount() {
     const {promise} = this.props;
@@ -54,13 +64,13 @@ class Loadable extends Component {
 
   onResolve = (value) => {
     // TODO: Find out why this is being called multiple times
-    this.setState({status: STATUS.RESOLVED, value});
+    this.setState({status: STATUS.RESOLVED, value: value});
   };
 
   onError = (value) => {
     // TODO: Find out why this is being called multiple times
     if (this.state.status !== STATUS.ERROR) {
-      this.setState({status: STATUS.ERROR, value});
+      this.setState({status: STATUS.ERROR, value: value, show: true});
     }
   };
 
@@ -74,6 +84,10 @@ class Loadable extends Component {
     );
   };
 
+  close = () => {
+    this.setState({show: false});
+  }
+
   render() {
     const {status, value} = this.state;
     let {renderLoading, renderLoaded, renderError} = this.props;
@@ -85,7 +99,7 @@ class Loadable extends Component {
     } else if (status === STATUS.RESOLVED) {
       return renderLoaded(value);
     } else {
-      return renderError(value);
+      return renderError(value, this.state.show, this.close);
     }
   }
 }