New: Link indexer to specific download client (#2668)

* New: Link indexer to specific download client

Closes #1215
Co-authored-by: Qstick <qstick@gmail.com>

(cherry picked from commit 13aaa20f1bf1448fa804738804205cb16f0d91f9)

* lint

Co-authored-by: Qiming Chen <simoncqm@gmail.com>

frontend/src/Components/Form/DownloadClientSelectInputConnector.js

@@ -0,0 +1,100 @@
+import _ from 'lodash';
+import PropTypes from 'prop-types';
+import React, { Component } from 'react';
+import { connect } from 'react-redux';
+import { createSelector } from 'reselect';
+import { fetchDownloadClients } from 'Store/Actions/settingsActions';
+import sortByName from 'Utilities/Array/sortByName';
+import EnhancedSelectInput from './EnhancedSelectInput';
+
+function createMapStateToProps() {
+  return createSelector(
+    (state) => state.settings.downloadClients,
+    (state, { includeAny }) => includeAny,
+    (state, { protocol }) => protocol,
+    (downloadClients, includeAny, protocolFilter) => {
+      const {
+        isFetching,
+        isPopulated,
+        error,
+        items
+      } = downloadClients;
+
+      const filteredItems = items.filter((item) => item.protocol === protocolFilter);
+
+      const values = _.map(filteredItems.sort(sortByName), (downloadClient) => {
+        return {
+          key: downloadClient.id,
+          value: downloadClient.name
+        };
+      });
+
+      if (includeAny) {
+        values.unshift({
+          key: 0,
+          value: '(Any)'
+        });
+      }
+
+      return {
+        isFetching,
+        isPopulated,
+        error,
+        values
+      };
+    }
+  );
+}
+
+const mapDispatchToProps = {
+  dispatchFetchDownloadClients: fetchDownloadClients
+};
+
+class DownloadClientSelectInputConnector extends Component {
+
+  //
+  // Lifecycle
+
+  componentDidMount() {
+    if (!this.props.isPopulated) {
+      this.props.dispatchFetchDownloadClients();
+    }
+  }
+
+  //
+  // Listeners
+
+  onChange = ({ name, value }) => {
+    this.props.onChange({ name, value: parseInt(value) });
+  };
+
+  //
+  // Render
+
+  render() {
+    return (
+      <EnhancedSelectInput
+        {...this.props}
+        onChange={this.onChange}
+      />
+    );
+  }
+}
+
+DownloadClientSelectInputConnector.propTypes = {
+  isFetching: PropTypes.bool.isRequired,
+  isPopulated: PropTypes.bool.isRequired,
+  name: PropTypes.string.isRequired,
+  value: PropTypes.oneOfType([PropTypes.number, PropTypes.string]).isRequired,
+  values: PropTypes.arrayOf(PropTypes.object).isRequired,
+  includeAny: PropTypes.bool.isRequired,
+  onChange: PropTypes.func.isRequired,
+  dispatchFetchDownloadClients: PropTypes.func.isRequired
+};
+
+DownloadClientSelectInputConnector.defaultProps = {
+  includeAny: false,
+  protocol: 'torrent'
+};
+
+export default connect(createMapStateToProps, mapDispatchToProps)(DownloadClientSelectInputConnector);