#!/usr/bin/env fish

# Run using containers
docker run --rm -i -v "$PWD:/workdir:ro" --workdir '/workdir' 'ghcr.io/jqlang/jq' '.' 'package.json'

# Include the name of the file in the filtered output
jq -r 'input_filename' 'package.json'
jq '{"start":.start,"end":.end,"file":input_filename}' '/tmp/.ansible/async'/*

# Only list keys
jq 'keys' 'file.json'

# Sort all the keys.
jq --sort-keys '.' 'input.json' > 'output.json'
jq --sort-keys '.' 'file.json' | sponge 'file.json'

# Avoid failure due to possibly missing keys
# Notice the postfix operator '?'
jq '.spec.template.spec.containers[]?.env?' 'manifest.kube.json'

# Update values of keys
jq '.dependencies."@pulumi/aws" |= "6.57.0"' 'package.json' | sponge 'package.json'

# Add elements to lists
jq '.orchestrators += [{"orchestratorVersion": "1.24.9"}]'
jq --arg 'REGION' "${AWS_REGION}" \
	'.spec.template.spec.containers[]?.env? += [{name: "AWS_REGION", value: $REGION}]' \
	'/tmp/service.kube.json'
yq -iy '.resources+=["awx.yaml"]' 'kustomization.yaml'

# Delete keys from objects
jq 'del(.items[].spec.clusterIP)' '/tmp/service.kube.json'
jq 'del(.country, .number, .language)' …
# Remember ranges *exclude* the end index
jq 'del(.[0,1,2])' …
jq 'del(.[0:3])' …

# Remove all null values
jq 'del(..|nulls)' …
jq 'del(recurse(.[]?;true)|select(. == null))' …

# Print objects as 'key [space] "value"' pairs
jq -r 'to_entries[] | "\(.key) \"\(.value)\""' 'file.json'

# Change the value of single keys
jq '.extensionsGallery | .serviceUrl |= "https://marketplace.visualstudio.com/_apis/public/gallery"' \
	'/usr/lib/code/product.json'
jq --arg 'NAMESPACE' "$NAMESPACE" \
	'.spec.template.spec.containers[]?.env[]? |= {
		"name": .name,
		"value": (if .name == "KUBERNETES_NAMESPACE" then $NAMESPACE else .value end)
	}' \
	'/tmp/service.kube.json'

# Change the value of multiple keys at once
jq '.extensionsGallery
		| .serviceUrl = "https://marketplace.visualstudio.com/_apis/public/gallery"
		| .cacheUrl = "https://vscode.blob.core.windows.net/gallery/index"
		| .itemUrl = "https://marketplace.visualstudio.com/items"' \
	'/usr/lib/code/product.json'
jq '.extensionsGallery + {
		serviceUrl: "https://marketplace.visualstudio.com/_apis/public/gallery",
		cacheUrl: "https://vscode.blob.core.windows.net/gallery/index",
		itemUrl: "https://marketplace.visualstudio.com/items"
	}' '/usr/lib/code/product.json'

# Merge objects from 2 files
jq '.[0] * .[1]' '1.json' '2.json'

# Only show ('select'ed) elements which specific attribute's value is in a list
jq '.[]|select(.PrivateIpAddress|IN("172.31.6.209","172.31.6.229"))|.PrivateDnsName' '-'

# Add elements from arrays with the same name from other files.
jq '.rules=([input.rules]|flatten)' 'starting-rule-set.json' 'ending-rule-set.json'
jq '.rules=([inputs.rules]|flatten)' 'starting-rule-set.json' 'parts'/*'.json'

# Put specific keys on top.
jq '.objects = [(.objects[] as $in | {type,name,id} + $in)]' 'prod/dataPipeline_deviceLocationConversion_prod.json'

# Convert Enpass' JSON export to a YAML file
jq '.items[] | {title, fields} | .title + ":", (.fields[] | select(.value != "") | "  " + .label + ": " + .value)' \
	'test.json' -cr

# Refactor an AWS DataPipeline definition
jq --sort-keys '.' datapipeline.json > '/tmp/sorted.json' \
&& jq '.objects = [(.objects[] as $in | {type,name,id} + $in | with_entries(select(.value != null)))]' \
	'/tmp/sorted.json' > '/tmp/reordered.json' \
&& mv '/tmp/reordered.json' 'datapipeline.json'

# Extract the value of elements with specific keys
kubectl get pods -o 'yaml' \
| yq -y '
		.items[]
		| select(.metadata.name | test("^runner-.*"))
		| select(.spec.tolerations[].key == "component" and .spec.tolerations[].value == "big-runner")
		| .spec.nodeSelector, .spec.tolerations
	' -

# Recursively find all the properties whose key is 'errors' whether it exists or not
# '..' unrolls the object, '?' checks for the value or returns null, and 'select(.)' is like a filter on truthy values
jq '[.. | .errors?[0] | select(.) ]' '/tmp/helm.template.out.json'

# Find all images in a helm chart explicitly or implicitly using the tag 'latest'
helm template 'chartName' \
| yq -r '
		..
		| .image?
		| select(.)
		| select(.|test(".*:.*")|not), select(.|test(".*:$")), select(.|test(".*:latest"))
	' '-'

# Check that the 'backend.url key' in a 'Pulumi.yaml' file is not 'file://' and fail otherwise
yq -e '(.backend.url|test("^file://")?)|not' 'Pulumi.yaml'

# Apply formatting to the same file you read from
yq -iY --explicit-start '.' 'external-snapshotter/crds.yml'

# Sort
# Refer <https://stackoverflow.com/questions/30331504/how-to-sort-a-json-file-by-keys-and-values-of-those-keys-in-jq>
# by key
jq -r --sort-keys '.' 'file.json'
jq -r 'to_entries | sort_by(.key) | from_entries' 'file.json'
# by value
jq -r 'to_entries | sort_by(.value) | from_entries' 'file.json'
# array, by 'age'
jq -r 'sort_by(.age)' 'file.json'
# array, by 'age', limit to the first 3 elements
jq -r 'sort_by(.age)|[limit(3;.[])]' 'file.json'
# array, by 'age' descending
jq -r 'sort_by(.age)|reverse' 'file.json'