const vscode = require('vscode');

function activate(context) {
    console.log('IntelliWACC is now active!');

    // Create a DiagnosticCollection for error highlighting
    let diagnosticCollection = vscode.languages.createDiagnosticCollection('wacc');
    context.subscriptions.push(diagnosticCollection);

    // Listen for document saves and run error checking
    vscode.workspace.onDidSaveTextDocument((document) => {
        if (document.languageId !== 'wacc') return;

        let diagnostics = [];
        let errors = runCompilerAndGetErrors(document.getText());

        errors.forEach(error => {
            let range = new vscode.Range(error.line, error.column, error.line, error.column + 1);
            let diagnostic = new vscode.Diagnostic(range, error.message, vscode.DiagnosticSeverity.Error);
            diagnostics.push(diagnostic);
        });

        diagnosticCollection.set(document.uri, diagnostics);
    });
}

function deactivate() {
    console.log('IntelliWACC is deactivating...');
}

function runCompilerAndGetErrors(code) {
    // COMPILER INTEGRATION
}

module.exports = {
    activate,
    deactivate
};