import * as vscode from 'vscode';
import { TplQuickFix } from './TplQuickFix';

export class TabFix implements TplQuickFix {
    public readonly diagnosticCode = 'invalid_tab';

    public provideFix(document: vscode.TextDocument, diagnostic: vscode.Diagnostic): vscode.CodeAction[] {
        const fix = new vscode.CodeAction("Tabs in 4 Spaces umwandeln", vscode.CodeActionKind.QuickFix);
        fix.edit = new vscode.WorkspaceEdit();
        
        const line = document.lineAt(diagnostic.range.start.line);
        const newText = line.text.replace(/\t/g, '    ');
        
        fix.edit.replace(document.uri, line.range, newText);
        fix.diagnostics = [diagnostic];
        fix.isPreferred = true; // Setzt dies als Standard-Vorschlag
        
        return [fix];
    }
}