Try this:
"script": {
"source": """
def doc = ctx._source;
def category = doc['category'];
def status = doc['status'];
def contexts = new HashMap();
contexts.put('category', category);
contexts.put('status', status);
def map = new HashMap();
map.put('input', doc['name']);
map.put('contexts', contexts);
doc['name_suggest'] = map;
ctx._source = doc;
"""
}