#!/bin/sh
# script/discard-dist-on-failure: run one step of the RELEASE build, and if that
# step fails, remove dist/ before returning its exit status. Our own extension
# to scripts-to-rule-them-all, wrapped around every step of make build.
#
# Why: with AUTISTMASK_DEBUG=1 exported in the calling shell, make build
# compiles a debug bundle and then fails on it in script/verify-build — but the
# bundle is already written. It is loadable, and every wallet it creates gets
# the publicly committed test recovery phrase from src/shared/constants.js. A
# failed release build that leaves that behind is a smaller version of the trap
# the verifier exists to close, and "the failure was loud" only works on an
# operator who does not load dist/chrome/ anyway. Removing the artifact does not
# depend on that.
#
# Two things this deliberately does not do. It does not wrap make build-debug: a
# debug build that failed is not a mistakable artifact, and its output is the
# evidence of what went wrong. And it never removes anything on a step that
# SUCCEEDS, including the final check-censored --require-dist pass.
#
# The removal is never silent: it says dist/ is gone and why, on stderr, above
# the build's own failure.
set -eu

ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
DIST="$ROOT/dist"

usage() {
    echo "usage: discard-dist-on-failure COMMAND [ARG...]" >&2
}

# Remove dist/, and say so. A removal that could not be completed is reported as
# loudly as one that was: the artifact is still on disk, and reporting nothing
# would leave the operator believing it is not.
discard_dist() {
    if [ ! -e "$DIST" ] && [ ! -h "$DIST" ]; then
        echo "discard-dist-on-failure: the release build failed. There was no" \
            "dist/ to remove." >&2
        return 0
    fi

    rm -rf "$DIST" || true

    if [ -e "$DIST" ] || [ -h "$DIST" ]; then
        echo "discard-dist-on-failure: the release build failed and dist/" \
            "COULD NOT BE REMOVED, so it is still on disk. Do not load it:" \
            "a release build that failed may hold a complete debug bundle," \
            "whose wallets all use the publicly committed test recovery" \
            "phrase. Remove it by hand (make clean)." >&2
        return 0
    fi

    echo "discard-dist-on-failure: the release build failed, so dist/ WAS" \
        "REMOVED and no longer exists. A release build that fails has often" \
        "already emitted a complete, loadable debug bundle — every wallet it" \
        "creates gets the publicly committed test recovery phrase — so the" \
        "failed build is not left behind to be loaded. Fix the failure and" \
        "re-run make build, or run make build-debug if a debug build is what" \
        "was wanted; that target keeps its output." >&2
}

main() {
    [ "$#" -ge 1 ] || {
        usage
        echo "discard-dist-on-failure: no command given, so no build step ran" \
            "and nothing was removed." >&2
        exit 1
    }

    _status=0
    "$@" || _status=$?

    [ "$_status" -ne 0 ] || return 0

    discard_dist
    exit "$_status"
}

main "$@"