#!/usr/bin/env bash
# Ship the browser build to gbc.sl0p.foo.
#
# Static files only - no service, no restart, nginx serves the directory. The
# box does not build anything: the wasm is compiled here and rsynced.
#
#   ./web/deploy.sh                 # build + ship
#   DRY=1 ./web/deploy.sh           # show what would transfer
#   HOST=root@other ./web/deploy.sh
#
# The demo ROM is gbos (~/dev/gbos), which is a build artifact of that repo and
# deliberately not vendored here - point GBOS_ROM at it if it lives elsewhere.
set -euo pipefail

HOST="${HOST:-root@sl0p.foo}"
DEST="${DEST:-/opt/sl0p/gbc}"
GBOS_ROM="${GBOS_ROM:-$HOME/dev/gbos/gbos.gb}"
cd "$(dirname "$0")/.."

echo "==> building wasm"
make wasm

stage="$(mktemp -d)"
trap 'rm -rf "$stage"' EXIT
for f in web/*.html web/*.js; do
    install -Dm644 "$f" "$stage/$(basename "$f")"
done
install -Dm644 web/sl0pboy.wasm    "$stage/sl0pboy.wasm"

if [ -f "$GBOS_ROM" ]; then
    install -Dm644 "$GBOS_ROM" "$stage/roms/gbos.gb"
    # Keep the (gitignored) dev copy in step, so `python3 -m http.server` in
    # web/ serves what was last shipped. A stale one here is invisible and
    # costs an hour: the page looks fine but the ROM predates the feature
    # you're testing.
    install -Dm644 "$GBOS_ROM" web/roms/gbos.gb
    echo "==> demo ROM: $GBOS_ROM ($(du -h "$GBOS_ROM" | cut -f1))"
else
    # Not fatal: the page falls back to "drop in a ROM" when the fetch 404s.
    echo "!! no demo ROM at $GBOS_ROM - shipping without it" >&2
fi

echo "==> ${HOST}:${DEST}"
rsync -av --delete ${DRY:+--dry-run} -e ssh "$stage/" "${HOST}:${DEST}/"
[ -n "${DRY:-}" ] && exit 0

# nginx (user http/www-data) only needs to read; keep it root-owned.
ssh "$HOST" "chown -R root:root '$DEST' && chmod -R a+rX '$DEST'"

echo "==> verify"
for p in / /net.html /gbcore.js /gbhub.js /sl0pboy.wasm /roms/gbos.gb; do
    printf '  %-18s ' "$p"
    curl -s -o /dev/null -w '%{http_code} %{content_type} %{size_download}B\n' \
        "https://gbc.sl0p.foo$p"
done