const path = require('path');
const { LanguageClient, TransportKind } = require('vscode-languageclient/node');

/** @type {LanguageClient} */
let client;

/**
 * @param {import('vscode').ExtensionContext} context
 */
function activate(context) {
    const isWindows = process.platform === 'win32';
    const serverExe = isWindows ? 'aster-lsp.exe' : 'aster-lsp';

    // __dirname resolves to the real filesystem path (following the junction),
    // so .. goes to the workspace root where target/ lives
    const serverPath = path.join(__dirname, '..', 'target', 'debug', serverExe);

    const serverOptions = {
        command: serverPath,
        args: [],
    };

    const clientOptions = {
        documentSelector: [{ scheme: 'file', language: 'aster' }],
    };

    client = new LanguageClient(
        'aster-lsp',
        'Aster Language Server',
        serverOptions,
        clientOptions
    );

    client.start();
}

function deactivate() {
    if (client) {
        return client.stop();
    }
}

module.exports = { activate, deactivate };