Added client side error

Author: nang-dev

src/api/providers/pearai.ts

@@ -1,10 +1,25 @@
 import { OpenAiHandler } from "./openai"
+import * as vscode from "vscode"
 import { ApiHandlerOptions, PEARAI_URL } from "../../shared/api"
 import { AnthropicHandler } from "./anthropic"
 
 export class PearAiHandler extends AnthropicHandler {
 	constructor(options: ApiHandlerOptions) {
 		if (!options.pearaiApiKey) {
+			vscode.window.showErrorMessage("PearAI API key not found.", "Login to PearAI").then(async (selection) => {
+				if (selection === "Login to PearAI") {
+					const extensionUrl = `${vscode.env.uriScheme}://pearai.pearai/auth`
+					const callbackUri = await vscode.env.asExternalUri(vscode.Uri.parse(extensionUrl))
+
+					vscode.env.openExternal(
+						await vscode.env.asExternalUri(
+							vscode.Uri.parse(
+								`https://trypear.ai/signin?callback=${callbackUri.toString()}`, // Change to localhost if running locally
+							),
+						),
+					)
+				}
+			})
 			throw new Error("PearAI API key not found. Please login to PearAI.")
 		}
 		super({