#!/usr/bin/env bash
#  vim:ts=4:sts=4:sw=4:et
#
#  Author: Hari Sekhon
#  Date: 2020-04-01 18:59:00 +0100 (Wed, 01 Apr 2020)
#
#  https://github.com/harisekhon/bash-tools
#
#  License: see accompanying Hari Sekhon LICENSE file
#
#  If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
#
#  https://www.linkedin.com/in/harisekhon
#

set -euo pipefail
[ -n "${DEBUG:-}" ] && set -x
srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

# shellcheck disable=SC1090
. "$srcdir/lib/utils.sh"

# used by usage() in lib/utils.sh
# shellcheck disable=SC2034
usage_description="
Rebuilds the last N failed builds in BuildKite via its API

Useful to retrying N builds across projects where they may have failed due to agent problems

https://buildkite.com/docs/apis/rest-api/builds
"

# shellcheck disable=SC2034
usage_args="<pipeline> [<num_builds>]"

help_usage "$@"

min_args 1 "$@"

pipeline="$1"

num="${2:-10}"

if ! is_int "$num"; then
    usage "num builds must be an integer"
fi

if [ "$num" -lt 1 ] || [ "$num" -gt 100 ]; then
    usage "num builds must be an integer between 1 and 100"
fi

# remember to set this eg. BUILDKITE_ORGANIZATION="hari-sekhon"
user_org="${BUILDKITE_ORGANIZATION:-${BUILDKITE_USER:-}}"

"$srcdir/buildkite_api.sh" "/organizations/$user_org/pipelines/$pipeline/builds?state=failed&per_page=$num" |
jq -r '.[] | [.pipeline.slug, .number, .url] | @tsv' |
while read -r name number url; do
    echo -n "Rebuilding $name build number $number:  "
    "$srcdir/buildkite_api.sh" "$url/rebuild" -X PUT |
    jq -r '.state'
done