Get array index of matching query in Elasticsearch - elasticsearch

Question

I'm storing records in Elasticsearch as:
"mappings": {
"en": {
"_timestamp": {
"enabled": true
},
"_all": {
"enabled": false
},
"properties": {
"id": {
"type": "string",
"index": "analyzed"
},
"text": {
"type": "string",
"index": "analyzed",
"analyzer": "english"
}
}
}
}
Where each elasticsearch record is actually many records bundled into one by having the id field an array of ids [id1, id2, id3, ...] and the text field its respective text ['text 1', 'text 2', 'text 3', ...], so a POST would look something like:
POST my-index/en
{
"id": ["{doc1-ID}", "{doc2-ID}"],
"text": ["document 1 text goes here", "document 2 text goes here"]
}
And I'm running a search for text in the text field, and this all ok except I need the matching documents corresponding id value. I can do this within the app logic itself by iterating through each array item, but that is very costly and inefficient since each Elasticsearch record will be near the max size of ~2GB, so storing that in memory while I search through it all is simply not an option. I'm trying to find a way to retrieve the array index of the matching text from the text array field, so that I can grab it's respective id. Is there a way to get the array's index of the matching text using some kind of Elasticsearch script?
NOTE: I'm storing my documents in this seemingly convoluted way for a very good reason, I realize it would obviously be much easier to have 1 record per elasticsearch record, as it's designed to be; but this will not work for my requirements.