1 files changed, 114 insertions, 0 deletions
diff --git a/bin/gh b/bin/gh
new file mode 100755
index 0000000..66b7767
--- /dev/null
+++ b/bin/gh
@@ -0,0 +1,114 @@
+#!/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