Refactor Global state into Context Files (#128)

src/Common/CosmosClient.ts

@@ -1,39 +1,28 @@
 import * as Cosmos from "@azure/cosmos";
 import { RequestInfo, setAuthorizationTokenHeaderUsingMasterKey } from "@azure/cosmos";
-import { DatabaseAccount } from "../Contracts/DataModels";
-import { HttpHeaders, EmulatorMasterKey } from "./Constants";
-import * as NotificationConsoleUtils from "../Utils/NotificationConsoleUtils";
-import { ConsoleDataType } from "../Explorer/Menus/NotificationConsole/NotificationConsoleComponent";
-import { config, Platform } from "../Config";
-
-let _client: Cosmos.CosmosClient;
-let _masterKey: string;
-let _endpoint: string;
-let _authorizationToken: string;
-let _accessToken: string;
-let _databaseAccount: DatabaseAccount;
-let _subscriptionId: string;
-let _resourceGroup: string;
-let _resourceToken: string;
+import { configContext, Platform } from "../ConfigContext";
+import { logConsoleError } from "../Utils/NotificationConsoleUtils";
+import { EmulatorMasterKey, HttpHeaders } from "./Constants";
+import { userContext } from "../UserContext";
 
 const _global = typeof self === "undefined" ? window : self;
 
 export const tokenProvider = async (requestInfo: RequestInfo) => {
   const { verb, resourceId, resourceType, headers } = requestInfo;
-  if (config.platform === Platform.Emulator) {
+  if (configContext.platform === Platform.Emulator) {
     // TODO This SDK method mutates the headers object. Find a better one or fix the SDK.
     await setAuthorizationTokenHeaderUsingMasterKey(verb, resourceId, resourceType, headers, EmulatorMasterKey);
     return decodeURIComponent(headers.authorization);
   }
 
-  if (_masterKey) {
+  if (userContext.masterKey) {
     // TODO This SDK method mutates the headers object. Find a better one or fix the SDK.
     await setAuthorizationTokenHeaderUsingMasterKey(verb, resourceId, resourceType, headers, EmulatorMasterKey);
     return decodeURIComponent(headers.authorization);
   }
 
-  if (_resourceToken) {
-    return _resourceToken;
+  if (userContext.resourceToken) {
+    return userContext.resourceToken;
   }
 
   const result = await getTokenFromAuthService(verb, resourceType, resourceId);
@@ -42,28 +31,33 @@ export const tokenProvider = async (requestInfo: RequestInfo) => {
 };
 
 export const requestPlugin: Cosmos.Plugin<any> = async (requestContext, next) => {
-  requestContext.endpoint = config.PROXY_PATH;
+  requestContext.endpoint = configContext.PROXY_PATH;
   requestContext.headers["x-ms-proxy-target"] = endpoint();
   return next(requestContext);
 };
 
 export const endpoint = () => {
-  if (config.platform === Platform.Emulator) {
+  if (configContext.platform === Platform.Emulator) {
     // In worker scope, _global(self).parent does not exist
     const location = _global.parent ? _global.parent.location : _global.location;
-    return config.EMULATOR_ENDPOINT || location.origin;
+    return configContext.EMULATOR_ENDPOINT || location.origin;
   }
-  return _endpoint || (_databaseAccount && _databaseAccount.properties && _databaseAccount.properties.documentEndpoint);
+  return (
+    userContext.endpoint ||
+    (userContext.databaseAccount &&
+      userContext.databaseAccount.properties &&
+      userContext.databaseAccount.properties.documentEndpoint)
+  );
 };
 
 export async function getTokenFromAuthService(verb: string, resourceType: string, resourceId?: string): Promise<any> {
   try {
-    const host = config.BACKEND_ENDPOINT || _global.dataExplorer.extensionEndpoint();
+    const host = configContext.BACKEND_ENDPOINT || _global.dataExplorer.extensionEndpoint();
     const response = await _global.fetch(host + "/api/guest/runtimeproxy/authorizationTokens", {
       method: "POST",
       headers: {
         "content-type": "application/json",
-        "x-ms-encrypted-auth-token": _accessToken
+        "x-ms-encrypted-auth-token": userContext.accessToken
       },
       body: JSON.stringify({
         verb,
@@ -75,106 +69,25 @@ export async function getTokenFromAuthService(verb: string, resourceType: string
     const result = JSON.parse(await response.json());
     return result;
   } catch (error) {
-    NotificationConsoleUtils.logConsoleMessage(
-      ConsoleDataType.Error,
-      `Failed to get authorization headers for ${resourceType}: ${JSON.stringify(error)}`
-    );
+    logConsoleError(`Failed to get authorization headers for ${resourceType}: ${JSON.stringify(error)}`);
     return Promise.reject(error);
   }
 }
 
-export const CosmosClient = {
-  client(): Cosmos.CosmosClient {
-    if (_client) {
-      return _client;
-    }
-    const options: Cosmos.CosmosClientOptions = {
-      endpoint: endpoint() || " ", // CosmosClient gets upset if we pass a falsy value here
-      key: _masterKey,
-      tokenProvider,
-      connectionPolicy: {
-        enableEndpointDiscovery: false
-      },
-      userAgentSuffix: "Azure Portal"
-    };
+export function client(): Cosmos.CosmosClient {
+  const options: Cosmos.CosmosClientOptions = {
+    endpoint: endpoint() || " ", // CosmosClient gets upset if we pass a falsy value here
+    key: userContext.masterKey,
+    tokenProvider,
+    connectionPolicy: {
+      enableEndpointDiscovery: false
+    },
+    userAgentSuffix: "Azure Portal"
+  };
 
-    // In development we proxy requests to the backend via webpack. This is removed in production bundles.
-    if (process.env.NODE_ENV === "development") {
-      (options as any).plugins = [{ on: "request", plugin: requestPlugin }];
-    }
-    _client = new Cosmos.CosmosClient(options);
-    return _client;
-  },
-
-  authorizationToken(value?: string): string {
-    if (typeof value === "undefined") {
-      return _authorizationToken;
-    }
-    _authorizationToken = value;
-    _client = null;
-    return value;
-  },
-
-  accessToken(value?: string): string {
-    if (typeof value === "undefined") {
-      return _accessToken;
-    }
-    _accessToken = value;
-    _client = null;
-    return value;
-  },
-
-  masterKey(value?: string): string {
-    if (typeof value === "undefined") {
-      return _masterKey;
-    }
-    _client = null;
-    _masterKey = value;
-    return value;
-  },
-
-  endpoint(value?: string): string {
-    if (typeof value === "undefined") {
-      return _endpoint;
-    }
-    _client = null;
-    _endpoint = value;
-    return value;
-  },
-
-  databaseAccount(value?: DatabaseAccount): DatabaseAccount {
-    if (typeof value === "undefined") {
-      return _databaseAccount || ({} as any);
-    }
-    _client = null;
-    _databaseAccount = value;
-    return value;
-  },
-
-  subscriptionId(value?: string): string {
-    if (typeof value === "undefined") {
-      return _subscriptionId;
-    }
-    _client = null;
-    _subscriptionId = value;
-    return value;
-  },
-
-  resourceGroup(value?: string): string {
-    if (typeof value === "undefined") {
-      return _resourceGroup;
-    }
-    _client = null;
-    _resourceGroup = value;
-    return value;
-  },
-
-  resourceToken(value?: string): string {
-    if (typeof value === "undefined") {
-      return _resourceToken;
-    }
-    _client = null;
-    _resourceToken = value;
-    return value;
+  // In development we proxy requests to the backend via webpack. This is removed in production bundles.
+  if (process.env.NODE_ENV === "development") {
+    (options as any).plugins = [{ on: "request", plugin: requestPlugin }];
   }
-};
+  return new Cosmos.CosmosClient(options);
+}