/* --------------------------------------------------------------------------------------------
 * Copyright (c) Microsoft Corporation. All rights reserved.
 * Licensed under the MIT License. See License.txt in the project root for license information.
 * ------------------------------------------------------------------------------------------ */

import { workspace, ExtensionContext } from "vscode";
import * as path from 'path';

import {
    LanguageClient,
    LanguageClientOptions,
    ServerOptions,
    Executable,
} from "vscode-languageclient/node";

let client: LanguageClient;
const workSpaceFolder = workspace.workspaceFolders?.[0];
let cwd: string = workSpaceFolder.uri.fsPath;

export function activate(context: ExtensionContext) {
    const lspServerPath = path.resolve(
		context.extensionPath, '..', '..', 'target', 'debug', 'digital-lsp.exe'
	);
	    
    console.log('launch lsp in ', lspServerPath);
    const run: Executable = {
        command: lspServerPath,
        // options: { cwd },
    };

    // If the extension is launched in debug mode then the debug server options are used
    // Otherwise the run options are used
    let serverOptions: ServerOptions = {
        run,
        debug: run,
    };

    // Options to control the language client
    let clientOptions: LanguageClientOptions = {
        // Register the server for plain text documents
        documentSelector: [{ scheme: "file", language: "systemverilog" }],
    };

    // Create the language client and start the client.
    client = new LanguageClient(
        "Digital LSP",
        "Digital LSP",
        serverOptions,
        clientOptions
    );

    // Start the client. This will also launch the server
    client.start();
}

export function deactivate(): Thenable<void> | undefined {
    if (!client) {
        return undefined;
    }
    return client.stop();
}