update nested array object if exists yq - yq

Question

Having the following YAML how to using jq
versions:
- name: test1
version: "0.0.1"
- name: test2
id: "1"
How to update a version by its name fullfilling the following scenarios:
adding a a new object with a new name:
name: test3
version: "0.0.3"
updating an existing object with a new version:
name: test1
version: "0.1.1"
updating an existing object with no version:
name: test2
version: "0.0.2"
I have tested the following command, but i get undesired results like when replacing the version it keeps the old version and not the new one
yq -i ".versions= (.versions + {"name": "test", "version": "0.0.5"} | unique_by(.name))" test.yaml

Answer 1

If you care about the array's ordering (which I believe you do), the general answer would be: Find the matching index or default to a new one past the last, and add both fields to the item (or null) behind that index.
You didn't specify which implementation of yq you are using. While the solutions are similar, they are certainly not identical.
This would be a solution using kislyuk/yq:
yq='(.versions | .[(to_entries[] | select(.value.name == $name).key) // length]) += {$name, $version}'
# Adding a new object with a new name
yq -y --arg name test3 --arg version 0.0.3 "$yq"
versions:
- name: test1
version: 0.0.1
- name: test2
id: '1'
- name: test3
version: 0.0.3
# Updating an existing object with a new version:
yq -y --arg name test1 --arg version 0.1.1 "$yq"
versions:
- name: test1
version: 0.1.1
- name: test2
id: '1'
# Updating an existing object with no version:
yq -y --arg name test2 --arg version 0.0.2 "$yq"
versions:
- name: test1
version: 0.0.1
- name: test2
id: '1'
version: 0.0.2
Using mikefarah/yq, this can be translated to:
yq='(.versions | .[(to_entries | .[] | select(.value.name == env(name)).key) // length]) += {"name": env(name), "version": env(version)}'
# Adding a new object with a new name
name=test3 version=0.0.3 yq "$yq"
versions:
- name: test1
version: "0.0.1"
- name: test2
id: "1"
- name: test3
version: 0.0.3
# Updating an existing object with a new version:
name=test1 version=0.1.1 yq "$yq"
versions:
- name: test1
version: 0.1.1
- name: test2
id: "1"
# Updating an existing object with no version:
name=test2 version=0.0.2 yq "$yq"
versions:
- name: test1
version: "0.0.1"
- name: test2
id: "1"
version: 0.0.2