ci/request-reviews: Avoid duplicates with different casings (#348030)

git -C "$gitRepo" show "$baseRef":"$ownersFile" > "$tmp"/codeowners

# Associative array with the user as the key for easy de-duplication

# Make sure to always lowercase keys to avoid duplicates with different casings

declare -A users=()

for file in "${touchedFiles[@]}"; do

            log "Team $entry has these members: ${members[*]}"

            for user in "${members[@]}"; do

                users[$user]=

                users[${user,,}]=

            done

        else

            # Everything else is a user

            users[$entry]=

            users[${entry,,}]=

        fi

    done

done

# Cannot request a review from the author

if [[ -v users[$prAuthor] ]]; then

if [[ -v users[${prAuthor,,}] ]]; then

    log "One or more files are owned by the PR author, ignoring"

    unset 'users[$prAuthor]'

    unset 'users[${prAuthor,,}]'

fi

gh api \

# And we don't want to rerequest reviews from people who already reviewed

while read -r user; do

    if [[ -v users[$user] ]]; then

    if [[ -v users[${user,,}] ]]; then

        log "User $user is a code owner but has already left a review, ignoring"

        unset 'users[$user]'

        unset 'users[${user,,}]'

    fi

done < "$tmp/already-reviewed-by"