Print the earliest Brave browser release containing PR code

released-in.sh

#!/usr/bin/env bash
# Print the earliest Brave browser release containing PR code
# USAGE: released-in <PR_NUMBER | PR_URL | GIT_REF>
# Requires: bash>=4, coreutils, curl, git, grep, jq

set -eEo pipefail
shopt -s inherit_errexit

if [[ "$1" == */pull/* ]]; then
    pr_number="$(grep -oE 'pull/[0-9]+' <<<"$1"|cut -d/ -f2)"
elif grep -qxE '[0-9]{1,6}' <<<"$1"; then
    pr_number="$1"
elif grep -qxiE '[a-f0-9]{7,40}' <<<"$1"; then
    merge_sha="$1"
else
    echo "USAGE: released-in <PR_NUMBER | PR_URL | GIT_REF>"
    exit 1
fi

if [[ "$(git config --get remote.origin.url)" != */brave-core.git ]]; then
    echo "Please run this command from a brave-core checkout" \
         "(and run git fetch, or the results will be stale)" >&2
    exit 2
fi

if [[ "$pr_number" ]]; then
    pr_info="$(curl -fsS "https://api.github.com/repos/brave/brave-core/pulls/${pr_number:?}")"
    pr() { jq -r "${1:?}" <<<"${pr_info:?}"; }

    if [[ "$(pr .merged_at)" != null ]]; then
        merge_sha="$(pr .merge_commit_sha)"
        msg="PR #${pr_number}, merged in ${merge_sha:?}"
    else
        echo "PR #${pr_number} is not merged yet"
        exit
    fi
else
    msg="Ref ${merge_sha:?}"
fi

if release="$(git describe --tags --contains "${merge_sha:?}" 2>/dev/null|cut -d '~' -f1)" && [[ "$release" ]]; then
    echo "${msg:?}, released in $release"
else
    echo "${msg:?}, not yet released"
fi