JQ merge WooCommerce REST API responce - json

Question

Im trying to parse data from woocommerce from linux console.
Need to take only shipping info and item names with quantity.
im making curl request to wp-json/wc/v2/orders/ORDER_ID
then
jq '{order_id:.id,ship_info:.shipping,items: (.line_items[] | {name , quantity} ) }'
If order contains two items, jq will return two objects
example:
{
"order_id": 1234,
"ship_info": {
"first_name": "Sam",
"last_name": "Fisher",
"company": "",
"address_1": "24 Mega Drive",
"address_2": "",
"city": "Eglinton",
"state": "WA",
"postcode": "6032",
"country": "AU",
"phone": ""
},
"items": {
"name": "Black T-shirt",
"quantity": 1
}
}
{
"order_id": 1234,
"ship_info": {
"first_name": "Sam",
"last_name": "Fisher",
"company": "",
"address_1": "24 Mega Drive",
"address_2": "",
"city": "Eglinton",
"state": "WA",
"postcode": "6032",
"country": "AU",
"phone": ""
},
"items": {
"name": "White T-shirt",
"quantity": 1
}
}
I want merge items and use item's name as a key and item's qty as a value. Please advice how to get output like this
{
"order_id": 1234,
"ship_info": {
"first_name": "Sam",
"last_name": "Fisher",
"company": "",
"address_1": "24 Mega Drive",
"address_2": "",
"city": "Eglinton",
"state": "WA",
"postcode": "6032",
"country": "AU",
"phone": ""
},
"items": {
"White T-shirt": "1",
"Black T-shirt": "1"
}
}

Answer 1

With your current jq query you are iterating over the items inside a generated object. That's why you receive one object per item. Rather than merging them afterwards, don't separate them in the first place.
If you changed your query from
jq '{
order_id: .id,
ship_info: .shipping,
items: (.line_items[] | {name, quantity})
}'
to just
jq '{
order_id: .id,
ship_info: .shipping,
items: .line_items
}'
you'd probably already see that .line_items is actually an array.
To transform it according to your desired output, change that line to one of the followings. They should all yield the same result.
items: (.line_items | map({(.name): .quantity}) | add)
items: (INDEX(.line_items[]; .name) | map_values(.quantity))
items: (reduce .line_items[] as $i ({}; .[$i.name] = .quantity))