Move plugin manager logic out of UI component

Summary: Moving some things around for the upcoming update support.

Reviewed By: jknoxville

Differential Revision: D18347572

fbshipit-source-id: b614fe3a87f8e7fdc0c11c0d3bfe4787c0914d17

src/chrome/PluginInstaller.tsx

@@ -30,7 +30,6 @@ import {List} from 'immutable';
 import algoliasearch from 'algoliasearch';
 import path from 'path';
 import fs from 'fs-extra';
-import {PluginManager as PM} from 'live-plugin-manager';
 import {reportPlatformFailures, reportUsage} from '../utils/metrics';
 import restartFlipper from '../utils/restartFlipper';
 import {
@@ -38,17 +37,17 @@ import {
   PluginDefinition,
   registerInstalledPlugins,
 } from '../reducers/pluginManager';
-import {PLUGIN_DIR, readInstalledPlugins} from '../dispatcher/pluginManager';
-import {State as AppState, Store} from '../reducers';
+import {
+  PLUGIN_DIR,
+  readInstalledPlugins,
+  providePluginManager,
+  provideSearchIndex,
+} from '../utils/pluginManager';
+import {State as AppState} from '../reducers';
 import {connect} from 'react-redux';
 import {Dispatch, Action} from 'redux';
 
-const ALGOLIA_APPLICATION_ID = 'OFCNCOG2CU';
-const ALGOLIA_API_KEY = 'f54e21fa3a2a0160595bb058179bfb1e';
 const TAG = 'PluginInstaller';
-const PluginManager = new PM({
-  ignoredDependencies: ['flipper', 'react', 'react-dom', '@types/*'],
-});
 
 const EllipsisText = styled(Text)({
   overflow: 'hidden',
@@ -111,10 +110,7 @@ type OwnProps = {
 type Props = OwnProps & PropsFromState & DispatchFromProps;
 
 const defaultProps: OwnProps = {
-  searchIndexFactory: () => {
-    const client = algoliasearch(ALGOLIA_APPLICATION_ID, ALGOLIA_API_KEY);
-    return client.initIndex('npm-search');
-  },
+  searchIndexFactory: provideSearchIndex,
   autoHeight: false,
 };
 
@@ -208,13 +204,14 @@ function InstallButton(props: {
       // create empty watchman config (required by metro's file watcher)
       await fs.writeFile(path.join(PLUGIN_DIR, '.watchmanconfig'), '{}');
 
+      const pluginManager = providePluginManager();
       // install the plugin and all it's dependencies into node_modules
-      PluginManager.options.pluginsPath = path.join(
+      pluginManager.options.pluginsPath = path.join(
         PLUGIN_DIR,
         props.name,
         'node_modules',
       );
-      await PluginManager.install(props.name);
+      await pluginManager.install(props.name);
 
       // move the plugin itself out of the node_modules folder
       const pluginDir = path.join(

src/dispatcher/pluginManager.tsx

@@ -9,46 +9,8 @@
 
 import {Store} from '../reducers/index';
 import {Logger} from '../fb-interfaces/Logger';
-import path from 'path';
-import fs from 'fs-extra';
-import {homedir} from 'os';
-import {
-  registerInstalledPlugins,
-  PluginMap,
-  PluginDefinition,
-} from '../reducers/pluginManager';
-
-export const PLUGIN_DIR = path.join(homedir(), '.flipper', 'thirdparty');
-
-export async function readInstalledPlugins(): Promise<PluginMap> {
-  const pluginDirExists = await fs.pathExists(PLUGIN_DIR);
-
-  if (!pluginDirExists) {
-    return new Map();
-  }
-  const dirs = await fs.readdir(PLUGIN_DIR);
-  const plugins = await Promise.all<[string, PluginDefinition]>(
-    dirs.map(
-      name =>
-        new Promise(async (resolve, reject) => {
-          if (!(await fs.lstat(path.join(PLUGIN_DIR, name))).isDirectory()) {
-            return resolve(undefined);
-          }
-
-          const packageJSON = await fs.readFile(
-            path.join(PLUGIN_DIR, name, 'package.json'),
-          );
-
-          try {
-            resolve([name, JSON.parse(packageJSON.toString())]);
-          } catch (e) {
-            reject(e);
-          }
-        }),
-    ),
-  );
-  return new Map(plugins.filter(Boolean));
-}
+import {registerInstalledPlugins} from '../reducers/pluginManager';
+import {readInstalledPlugins} from '../utils/pluginManager';
 
 function refreshInstalledPlugins(store: Store) {
   readInstalledPlugins().then(plugins =>

src/utils/pluginManager.tsx

@@ -0,0 +1,63 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+import path from 'path';
+import fs from 'fs-extra';
+import {homedir} from 'os';
+import {PluginMap, PluginDefinition} from '../reducers/pluginManager';
+import {PluginManager as PM} from 'live-plugin-manager';
+import algoliasearch from 'algoliasearch';
+
+const ALGOLIA_APPLICATION_ID = 'OFCNCOG2CU';
+const ALGOLIA_API_KEY = 'f54e21fa3a2a0160595bb058179bfb1e';
+
+// TODO(T57014856): The use should be constrained to just this module when the
+// refactor is done.
+export function providePluginManager(): PM {
+  return new PM({
+    ignoredDependencies: ['flipper', 'react', 'react-dom', '@types/*'],
+  });
+}
+
+// TODO(T57014856): This should be private, too.
+export function provideSearchIndex(): algoliasearch.Index {
+  const client = algoliasearch(ALGOLIA_APPLICATION_ID, ALGOLIA_API_KEY);
+  return client.initIndex('npm-search');
+}
+
+export const PLUGIN_DIR = path.join(homedir(), '.flipper', 'thirdparty');
+export async function readInstalledPlugins(): Promise<PluginMap> {
+  const pluginDirExists = await fs.pathExists(PLUGIN_DIR);
+
+  if (!pluginDirExists) {
+    return new Map();
+  }
+  const dirs = await fs.readdir(PLUGIN_DIR);
+  const plugins = await Promise.all<[string, PluginDefinition]>(
+    dirs.map(
+      name =>
+        new Promise(async (resolve, reject) => {
+          if (!(await fs.lstat(path.join(PLUGIN_DIR, name))).isDirectory()) {
+            return resolve(undefined);
+          }
+
+          const packageJSON = await fs.readFile(
+            path.join(PLUGIN_DIR, name, 'package.json'),
+          );
+
+          try {
+            resolve([name, JSON.parse(packageJSON.toString())]);
+          } catch (e) {
+            reject(e);
+          }
+        }),
+    ),
+  );
+  return new Map(plugins.filter(Boolean));
+}