jq: reduce json arrays with a Math function - json

Question

I wrote this JSONProcessor bash function to sum, average, get min and get max values from arrays based on the name values. The average and min results are not correct and I can't for the life of me figure out what I am doing wrong.
function JSONProccessor {
jq '
def myMathFunc:
if (.name | test("^sum", "")) then
{"\(.name)": (.values | add)}
elif (.name | test("^avg|^global-avg", "")) then
{"\(.name)": ((.values | add) / (.values | length)) }
elif (.name | test("^max", "")) then
{"\(.name)": (.values | max) }
elif (.name | test("^min", "")) then
{"\(.name)": (.values | min) }
else
{"\(.name)": .values[]}
end;
[
.Response.stats.data[] |
.identifier.names[] as $name |
.identifier.values[] as $val |
{"\($name)": "\($val)"} + ([
.metric[] | myMathFunc
] | add)
]
' < ${1} > ${2}
}
Input JSON
{
"Response" : {
"TimeUnit" : [ 1588153140000, 1588153200000 ],
"metaData" : {
"errors" : [ ]
},
"resultTruncated" : false,
"stats" : {
"data" : [ {
"identifier" : {
"names" : [ "apiproxy" ],
"values" : [ "authn" ]
},
"metric" : [ {
"env" : "prod",
"name" : "min(request_processing_latency)",
"values" : [ 917.0, 6.0 ]
}, {
"env" : "prod",
"name" : "avg(total_response_time)",
"values" : [ 2203.5, 13.0 ]
}, {
"env" : "prod",
"name" : "max(request_processing_latency)",
"values" : [ 1286.0, 6.0 ]
}, {
"env" : "prod",
"name" : "global-avg-total_response_time",
"values" : [ 1473.3333333333333 ]
}, {
"env" : "prod",
"name" : "sum(message_count)",
"values" : [ 2.0, 1.0 ]
}
]
}
]
}
}
}
Output
[
{
"apiproxy": "authn",
"min(request_processing_latency)": 923,
"avg(total_response_time)": 2216.5,
"max(request_processing_latency)": 1292,
"global-avg-total_response_time": 1473.3333333333333,
"sum(message_count)": 3
}
]
Can you please review and let me know if I am missing anything obvious?

Answer 1

Your idea is right, but the test() function does not "need" the 2nd argument "" as you have defined. You just need the test() function to return a bool to assert your match. Removing the 2nd argument should make your function work as expected.
The test() function supports prototypes test(REGEX; FLAGS) where FLAGS defined in don't matter your logic at all. The test() function does not even take arguments separated by , but only by ; de-limiter.
jq-play snippet