#!/bin/sh
# script/commit-upstream-policy-files: bring this repo up to standards.
# It fetches the current script/write-upstream-policy-files from the
# prompts repo over HTTP, runs it on this repo and commits the files it
# wrote. It does not push. Identical in all repos. Our own extension to
# scripts-to-rule-them-all.
set -eu

ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
WRITE_UPSTREAM_POLICY_FILES_URL="https://git.eeqj.de/sneak/prompts/raw/branch/main/script/write-upstream-policy-files"

die() {
    echo "commit-upstream-policy-files: $*" >&2
    exit 1
}

main() {
    [ "$#" -eq 0 ] || die "usage: script/commit-upstream-policy-files"

    cd "$ROOT"

    tmp="$(mktemp -d)"
    trap 'rm -rf "$tmp"' EXIT

    curl --fail --silent --show-error --max-time 60 \
        --output "$tmp/write-upstream-policy-files" \
        "$WRITE_UPSTREAM_POLICY_FILES_URL" ||
        die "cannot fetch $WRITE_UPSTREAM_POLICY_FILES_URL"

    sh "$tmp/write-upstream-policy-files" "$ROOT" > "$tmp/written"
    commit="$(head -n 1 "$tmp/written")"
    paths="$(tail -n +2 "$tmp/written")"

    for path in $paths; do
        git add -- "$path"
    done

    if git diff --cached --quiet -- $paths; then
        echo "commit-upstream-policy-files: already at prompts $commit, nothing to commit"
    else
        git commit -m "Update policy files from prompts $commit" -- $paths
    fi
}

main "$@"