github_api

#!/bin/bash -eu

# Similar to `gh api <endpoint>`, this utility makes API calls to GitHub.
#
# ENVIRONMENT VARIABLES:
#   GITHUB_TOKEN: Required. The GitHub token to use for authentication.
#   GH_HOST: Optional. The GitHub host to use. We'll figure out the host from `BUILDKITE_REPO` env var if not set.
#
# Usage:
#   github_api <endpoint> [curl-options]
#
# Example:
#   github_api user # Send API request and print JSON response
#   github_api user --head # Make a HEAD request and print response headers

if [[ -z "${GITHUB_TOKEN:-}" ]]; then
    echo "Missing environment variable GITHUB_TOKEN"
    exit 1
fi

github_endpoint="$1"
shift

github_host=${GH_HOST:-}
if [[ -z "${github_host}" ]]; then
    if [[ "${BUILDKITE_REPO:-}" =~ ^(https?://|git@)([^/:]+)[:/] ]]; then
        github_host="${BASH_REMATCH[2]}"
    else
        github_host=github.com
    fi
fi

if [[ "$github_host" == "github.com" ]]; then
    url="https://api.github.com/$github_endpoint"
else
    url="https://${github_host}/api/v3/$github_endpoint"
fi

curl -H "Authorization: Bearer ${GITHUB_TOKEN}" -H "Accept: application/vnd.github+json" -s "$@" "$url"
exit $?