Bulk export (#684)

* First pass (working) collection export to zip

* Add export confirmation screen

* 👕

* Refactor

* Job for team export, move to tmp file, settings UI

* Export all collections job

* 👕

* Add specs

* Clarify UI

app/scenes/CollectionExport/CollectionExport.js

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+// @flow
+import * as React from 'react';
+import { observable } from 'mobx';
+import { inject, observer } from 'mobx-react';
+import Button from 'components/Button';
+import Flex from 'shared/components/Flex';
+import HelpText from 'components/HelpText';
+import Collection from 'models/Collection';
+import AuthStore from 'stores/AuthStore';
+import UiStore from 'stores/UiStore';
+
+type Props = {
+  collection: Collection,
+  auth: AuthStore,
+  ui: UiStore,
+  onSubmit: () => void,
+};
+
+@observer
+class CollectionExport extends React.Component<Props> {
+  @observable isLoading: boolean = false;
+
+  handleSubmit = async (ev: SyntheticEvent<*>) => {
+    ev.preventDefault();
+
+    this.isLoading = true;
+    await this.props.collection.export();
+    this.isLoading = false;
+
+    this.props.ui.showToast('Export in progress…', 'success');
+    this.props.onSubmit();
+  };
+
+  render() {
+    const { collection, auth } = this.props;
+    if (!auth.user) return;
+
+    return (
+      <Flex column>
+        <form onSubmit={this.handleSubmit}>
+          <HelpText>
+            Exporting the collection <strong>{collection.name}</strong> may take
+            a few minutes. We’ll put together a zip file of your documents in
+            Markdown format and email it to <strong>{auth.user.email}</strong>.
+          </HelpText>
+          <Button type="submit" disabled={this.isLoading} primary>
+            {this.isLoading ? 'Requesting Export…' : 'Export Collection'}
+          </Button>
+        </form>
+      </Flex>
+    );
+  }
+}
+
+export default inject('ui', 'auth')(CollectionExport);

app/scenes/CollectionExport/index.js

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+// @flow
+import CollectionExport from './CollectionExport';
+export default CollectionExport;

app/scenes/Settings/Export.js

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+// @flow
+import * as React from 'react';
+import { observable } from 'mobx';
+import { observer, inject } from 'mobx-react';
+import AuthStore from 'stores/AuthStore';
+import CollectionsStore from 'stores/CollectionsStore';
+import UiStore from 'stores/UiStore';
+
+import CenteredContent from 'components/CenteredContent';
+import PageTitle from 'components/PageTitle';
+import HelpText from 'components/HelpText';
+import Button from 'components/Button';
+
+type Props = {
+  auth: AuthStore,
+  collections: CollectionsStore,
+  ui: UiStore,
+};
+
+@observer
+class Export extends React.Component<Props> {
+  @observable isLoading: boolean = false;
+  @observable isExporting: boolean = false;
+
+  handleSubmit = async (ev: SyntheticEvent<*>) => {
+    ev.preventDefault();
+    this.isLoading = true;
+
+    const success = await this.props.collections.export();
+
+    if (success) {
+      this.isExporting = true;
+      this.props.ui.showToast('Export in progress…', 'success');
+    }
+    this.isLoading = false;
+  };
+
+  render() {
+    const { auth } = this.props;
+    if (!auth.user) return;
+
+    return (
+      <CenteredContent>
+        <PageTitle title="Export Data" />
+        <h1>Export Data</h1>
+        <HelpText>
+          Exporting your teams documents may take a little time depending on the
+          size of your knowledgebase. Consider exporting a single document or
+          collection instead.
+        </HelpText>
+        <HelpText>
+          Still want to export everything in your wiki? We’ll put together a zip
+          file of your collections and documents in Markdown format and email it
+          to <strong>{auth.user.email}</strong>.
+        </HelpText>
+        <Button
+          type="submit"
+          onClick={this.handleSubmit}
+          disabled={this.isLoading || this.isExporting}
+          primary
+        >
+          {this.isExporting
+            ? 'Export Requested'
+            : this.isLoading ? 'Requesting Export…' : 'Export All Data'}
+        </Button>
+      </CenteredContent>
+    );
+  }
+}
+
+export default inject('auth', 'ui', 'collections')(Export);