Change JSON structure using jq - json

Question

Hi stackoverflow community. I hope somebody can help me out with some JSON structuring problem. I'm very new to jq, so this problem is a very though one for me...
I have a JSON with the following structure
{
"a": {
"b": {
"1": {
"anyKey1": {
"value": {
"fontFamily": "value1",
"fontWeight": "value2",
"lineHeight": "value3",
"fontSize": "value4",
"letterSpacing": "value5",
"textDecoration": "value6",
"textCase": "value7"
},
"type": "typography"
}
}
},
"anyKey2": {
"value": {
"fontFamily": "value1",
"fontWeight": "value2",
"lineHeight": "value3",
"fontSize": "value4",
"letterSpacing": "value5",
"textDecoration": "value6",
"textCase": "value7"
},
"type": "typography"
}
}
}
I need to change it to the following structure wherever in a JSON the above structure is appearing:
{
"a": {
"b": {
"1": {
"anyKey1": {
"fontFamily": {
"value": "value1",
"type": "typography"
},
"fontWeight": {
"value": "value2",
"type": "typography"
},
"lineHeight": {
"value": "value3",
"type": "typography"
},
"fontSize": {
"value": "value4",
"type": "typography"
},
"letterSpacing": {
"value": "value5",
"type": "typography"
},
"textDecoration": {
"value": "value6",
"type": "typography"
},
"textCase": {
"value": "value7",
"type": "typography"
}
}
}
},
"anyKey2": {
"fontFamily": {
"value": "value1",
"type": "typography"
},
"fontWeight": {
"value": "value2",
"type": "typography"
},
"lineHeight": {
"value": "value3",
"type": "typography"
},
"fontSize": {
"value": "value4",
"type": "typography"
},
"letterSpacing": {
"value": "value5",
"type": "typography"
},
"textDecoration": {
"value": "value6",
"type": "typography"
},
"textCase": {
"value": "value7",
"type": "typography"
}
}
}
}
The rest of the JSON should keep unmodified. I hope some jq expert can help me out here. :)
PS: Thanks to pmf for the given answer, it was already very helpful to understand the way jq works. But I need it more dynamic, because I don't now always the naming of the keys. The only keys I always know is value and type. Therefore I also edited my question a little bit.
I tried myself already a lot to get my needed result, but I couldn't succeed till now. :(

Answer 1

Use walk to recursively visit each subitem. With each visit, select only those objects that have fields called value and type which are of type "object" and "string", respectively. Update (|=) these objects by first storing their .type field in a variable $type. Then, consider the .value field, and modify each of its fields by updating (|=) them to an object using their original value . and the previously stored $type variable.
walk(
(objects | select([.value, .type | type] == ["object","string"])) |=
(.type as $type | .value | with_entries(.value |= {value: ., $type}))
)
{
"a": {
"b": {
"1": {
"anyKey1": {
"fontFamily": {
"value": "value1",
"type": "typography"
},
"fontWeight": {
"value": "value2",
"type": "typography"
},
"lineHeight": {
"value": "value3",
"type": "typography"
},
"fontSize": {
"value": "value4",
"type": "typography"
},
"letterSpacing": {
"value": "value5",
"type": "typography"
},
"textDecoration": {
"value": "value6",
"type": "typography"
},
"textCase": {
"value": "value7",
"type": "typography"
}
}
}
},
"anyKey2": {
"fontFamily": {
"value": "value1",
"type": "typography"
},
"fontWeight": {
"value": "value2",
"type": "typography"
},
"lineHeight": {
"value": "value3",
"type": "typography"
},
"fontSize": {
"value": "value4",
"type": "typography"
},
"letterSpacing": {
"value": "value5",
"type": "typography"
},
"textDecoration": {
"value": "value6",
"type": "typography"
},
"textCase": {
"value": "value7",
"type": "typography"
}
}
}
}
Demo