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#!/bin/bash
set -e -o pipefail
CURL='curl -sSL'
JQ='jq -r'
GH_ACCESS_TOKEN=${GH_ACCESS_TOKEN:-`cat $DOT_DIR/GH_TOKEN_GH_SCRIPT`}
usage() {
printf "usage: gh [-v] [commands] [options]\n"
printf "\ncommands:\n"
printf " release-latest REPO\t\t prints the latest version tag of REPO\n"
printf " release-url REPO TAG\t prints the url to the release TAG of REPO\n"
printf " tag-latest REPO\t\t prints the latest version tag of REPO\n"
printf " gql QUERY\t\t sends a query to the v4 graphql API\n"
printf "\n"
}
err() {
echo >&2 "error: $@"
}
has_cmd() {
if ! command -v $1 1,2&>/dev/null; then
err "$s not found"
return 1
fi
}
gql() {
local q=$1
local res=`$CURL https://api.github.com/graphql \
-X POST \
-H "Authorization: bearer $GH_ACCESS_TOKEN" \
-H "Content-Type: application/json" \
-d "{\"query\":\"query{ $q }\"}"`
[[ $? -ne 0 ]] && {
err `echo $res | $JQ '.message'`
err "request was" "{\"query\":\"query{ $q }\"}"
exit 1
}
[[ -z "$res" ]] && {
err "empty response"
exit 1
}
local errors=`echo $res | $JQ '.errors?'`
[[ $errors -ne "null" ]] && {
err "$errors"
err "request was" "{\"query\":\"query{ $q }\"}"
exit 1
}
echo $res
}
if [ -z "$GH_ACCESS_TOKEN" ]; then
err "no github access token"
exit 1
fi
has_cmd jq
cmd="$1"; opt="$2"
case $cmd in
gql)
if [[ -z $opt ]]; then
err "no QUERY found"
exit 1
fi
gql "$opt" | jq '.'
exit 0
;;
release-latest)
if [[ -z $opt ]]; then
err "no REPO found"
exit 1
fi
opt=(${opt//\// })
gql "repository(owner:\\\"${opt[0]}\\\",name:\\\"${opt[1]}\\\"){ releases(first:1, orderBy:{field:CREATED_AT, direction:DESC}){ nodes{tag{name}}} }" | $JQ '.data.repository.releases.nodes[].tag.name'
exit 0
;;
tag-latest)
if [[ -z $opt ]]; then
err "no REPO found"
exit 1
fi
opt=(${opt//\// })
gql "repository(owner:\\\"${opt[0]}\\\",name:\\\"${opt[1]}\\\"){ refs(first: 1, orderBy:{field:TAG_COMMIT_DATE, direction:DESC}, refPrefix:\\\"refs/tags/\\\"){ nodes{name}} }" | $JQ '.data.repository.refs.nodes[].name'
exit 0
;;
release-url)
if [[ -z $opt ]]; then
err "no REPO found"
exit 1
fi
if [[ -z $3 ]]; then
err "no TAG found"
fi
opt=(${opt//\// })
gql "repository(owner:\\\"${opt[0]}\\\",name:\\\"${opt[1]}\\\"){release(tagName:\\\"$3\\\"){url}}" | $JQ '.data.repository.release.url'
exit 0
;;
*)
usage
exit 0
;;
esac
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