From d1999dad0d63af968b1a6266e0bb4cc01ab022eb Mon Sep 17 00:00:00 2001
From: Vigilans <vigilans@foxmail.com>
Date: Mon, 1 Apr 2019 16:35:29 +0800
Subject: [PATCH 1/2] Add try-catch block during extesion's activation

---
 src/extension.ts | 78 ++++++++++++++++++++++++++----------------------
 1 file changed, 42 insertions(+), 36 deletions(-)

diff --git a/src/extension.ts b/src/extension.ts
index 7a389142..5c6f957b 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -16,51 +16,57 @@ import { leetCodeChannel } from "./leetCodeChannel";
 import { leetCodeExecutor } from "./leetCodeExecutor";
 import { leetCodeManager } from "./leetCodeManager";
 import { leetCodeStatusBarController } from "./statusbar/leetCodeStatusBarController";
+import { DialogType, promptForOpenOutputChannel } from "./utils/uiUtils";
 import { leetCodePreviewProvider } from "./webview/leetCodePreviewProvider";
 import { leetCodeResultProvider } from "./webview/leetCodeResultProvider";
 import { leetCodeSolutionProvider } from "./webview/leetCodeSolutionProvider";
 
 export async function activate(context: vscode.ExtensionContext): Promise<void> {
-    if (!await leetCodeExecutor.meetRequirements()) {
-        return;
-    }
+    try {
+        if (!await leetCodeExecutor.meetRequirements()) {
+            throw new Error("The environment doesn't meet requirements");
+        }
 
-    leetCodeManager.on("statusChanged", () => {
-        leetCodeStatusBarController.updateStatusBar(leetCodeManager.getStatus(), leetCodeManager.getUser());
-        leetCodeTreeDataProvider.refresh();
-    });
+        leetCodeManager.on("statusChanged", () => {
+            leetCodeStatusBarController.updateStatusBar(leetCodeManager.getStatus(), leetCodeManager.getUser());
+            leetCodeTreeDataProvider.refresh();
+        });
 
-    const leetCodeTreeDataProvider: LeetCodeTreeDataProvider = new LeetCodeTreeDataProvider(context);
-    leetCodePreviewProvider.initialize(context);
-    leetCodeResultProvider.initialize(context);
-    leetCodeSolutionProvider.initialize(context);
+        const leetCodeTreeDataProvider: LeetCodeTreeDataProvider = new LeetCodeTreeDataProvider(context);
+        leetCodePreviewProvider.initialize(context);
+        leetCodeResultProvider.initialize(context);
+        leetCodeSolutionProvider.initialize(context);
 
-    context.subscriptions.push(
-        leetCodeStatusBarController,
-        leetCodeChannel,
-        leetCodePreviewProvider,
-        leetCodeResultProvider,
-        leetCodeSolutionProvider,
-        vscode.window.createTreeView("leetCodeExplorer", { treeDataProvider: leetCodeTreeDataProvider, showCollapseAll: true }),
-        vscode.languages.registerCodeLensProvider({ scheme: "file" }, codeLensProvider),
-        vscode.commands.registerCommand("leetcode.deleteCache", () => cache.deleteCache()),
-        vscode.commands.registerCommand("leetcode.toggleLeetCodeCn", () => plugin.switchEndpoint()),
-        vscode.commands.registerCommand("leetcode.signin", () => leetCodeManager.signIn()),
-        vscode.commands.registerCommand("leetcode.signout", () => leetCodeManager.signOut()),
-        vscode.commands.registerCommand("leetcode.selectSessions", () => session.selectSession()),
-        vscode.commands.registerCommand("leetcode.createSession", () => session.createSession()),
-        vscode.commands.registerCommand("leetcode.previewProblem", (node: LeetCodeNode) => leetCodePreviewProvider.preview(node)),
-        vscode.commands.registerCommand("leetcode.showProblem", (node: LeetCodeNode) => show.showProblem(node)),
-        vscode.commands.registerCommand("leetcode.searchProblem", () => show.searchProblem()),
-        vscode.commands.registerCommand("leetcode.showSolution", (node: LeetCodeNode) => show.showSolution(node)),
-        vscode.commands.registerCommand("leetcode.refreshExplorer", () => leetCodeTreeDataProvider.refresh()),
-        vscode.commands.registerCommand("leetcode.testSolution", (uri?: vscode.Uri) => test.testSolution(uri)),
-        vscode.commands.registerCommand("leetcode.submitSolution", (uri?: vscode.Uri) => submit.submitSolution(uri)),
-        vscode.commands.registerCommand("leetcode.switchDefaultLanguage", () => switchDefaultLanguage()),
-    );
+        context.subscriptions.push(
+            leetCodeStatusBarController,
+            leetCodeChannel,
+            leetCodePreviewProvider,
+            leetCodeResultProvider,
+            leetCodeSolutionProvider,
+            vscode.window.createTreeView("leetCodeExplorer", { treeDataProvider: leetCodeTreeDataProvider, showCollapseAll: true }),
+            vscode.languages.registerCodeLensProvider({ scheme: "file" }, codeLensProvider),
+            vscode.commands.registerCommand("leetcode.deleteCache", () => cache.deleteCache()),
+            vscode.commands.registerCommand("leetcode.toggleLeetCodeCn", () => plugin.switchEndpoint()),
+            vscode.commands.registerCommand("leetcode.signin", () => leetCodeManager.signIn()),
+            vscode.commands.registerCommand("leetcode.signout", () => leetCodeManager.signOut()),
+            vscode.commands.registerCommand("leetcode.selectSessions", () => session.selectSession()),
+            vscode.commands.registerCommand("leetcode.createSession", () => session.createSession()),
+            vscode.commands.registerCommand("leetcode.previewProblem", (node: LeetCodeNode) => leetCodePreviewProvider.preview(node)),
+            vscode.commands.registerCommand("leetcode.showProblem", (node: LeetCodeNode) => show.showProblem(node)),
+            vscode.commands.registerCommand("leetcode.searchProblem", () => show.searchProblem()),
+            vscode.commands.registerCommand("leetcode.showSolution", (node: LeetCodeNode) => show.showSolution(node)),
+            vscode.commands.registerCommand("leetcode.refreshExplorer", () => leetCodeTreeDataProvider.refresh()),
+            vscode.commands.registerCommand("leetcode.testSolution", (uri?: vscode.Uri) => test.testSolution(uri)),
+            vscode.commands.registerCommand("leetcode.submitSolution", (uri?: vscode.Uri) => submit.submitSolution(uri)),
+            vscode.commands.registerCommand("leetcode.switchDefaultLanguage", () => switchDefaultLanguage()),
+        );
 
-    await leetCodeExecutor.switchEndpoint(plugin.getLeetCodeEndpoint());
-    leetCodeManager.getLoginStatus();
+        await leetCodeExecutor.switchEndpoint(plugin.getLeetCodeEndpoint());
+        leetCodeManager.getLoginStatus();
+    } catch (error) {
+        leetCodeChannel.appendLine(error.message);
+        promptForOpenOutputChannel("Extension initialization failed. Please open output channel for details.", DialogType.error);
+    }
 }
 
 export function deactivate(): void {

From 7479df2c7ce1458992ad1ce462440de3c24575a4 Mon Sep 17 00:00:00 2001
From: Vigilans <vigilans@foxmail.com>
Date: Mon, 1 Apr 2019 17:18:00 +0800
Subject: [PATCH 2/2] Address comments in review

---
 src/extension.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/extension.ts b/src/extension.ts
index a0780396..87faaac1 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -24,7 +24,7 @@ import { leetCodeSolutionProvider } from "./webview/leetCodeSolutionProvider";
 export async function activate(context: vscode.ExtensionContext): Promise<void> {
     try {
         if (!await leetCodeExecutor.meetRequirements()) {
-            throw new Error("The environment doesn't meet requirements");
+            throw new Error("The environment doesn't meet requirements.");
         }
 
         leetCodeManager.on("statusChanged", () => {
@@ -65,7 +65,7 @@ export async function activate(context: vscode.ExtensionContext): Promise<void>
         await leetCodeExecutor.switchEndpoint(plugin.getLeetCodeEndpoint());
         leetCodeManager.getLoginStatus();
     } catch (error) {
-        leetCodeChannel.appendLine(error.message);
+        leetCodeChannel.appendLine(error.toString());
         promptForOpenOutputChannel("Extension initialization failed. Please open output channel for details.", DialogType.error);
     }
 }

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