#!/usr/bin/env bash
# preview-plymouth.sh — fast local preview of the 'fleet' boot splash WITHOUT
# building/booting the full diskless image. The splash is just plymouthd + the
# theme + status tokens, so it runs on any Linux box with plymouth installed
# (root), driven by the same `plymouth update --status=` tokens the dracut hooks
# emit (dot1x-macsec-up.sh / nvmf-connect.sh).
#
#   sudo bash scripts/preview-plymouth.sh [secure|test]
#
# Seeing it:
#   - Windowed: needs the X11 renderer (Debian/Ubuntu: `apt install plymouth-x11`,
#     run inside an X session). Fedora/RHEL often don't package it.
#   - No X11 renderer: switch to a spare VT (Ctrl+Alt+F3), run there, watch,
#     Ctrl+Alt+F1 back — plymouthd grabs DRM on that VT.
#   - Headless/CI screenshot: Xvfb + x11 renderer + a grab tool.
#
# Iterate: edit files/plymouth/themes/fleet/fleet.script, re-run this. Seconds,
# not a 30-min image build. (On an already-booted diskless host the root overlay
# is writable, so you can scp the theme to /usr/share/plymouth/themes/fleet and
# run this there for a real distro/font/plugin stack.)
set -euo pipefail

[ "$(id -u)" -eq 0 ] || { echo "run as root (plymouthd needs it)" >&2; exit 1; }

mode=${1:-secure}
theme_src=${THEME_SRC:-files/plymouth/themes/fleet}
dest=/usr/share/plymouth/themes/fleet

command -v plymouthd >/dev/null 2>&1 || {
    echo "ERROR: plymouthd not found — install plymouth, plymouth-scripts," >&2
    echo "       plymouth-plugin-label, and the script plugin first." >&2
    exit 1
}
[ -f "$theme_src/fleet.script" ] || {
    echo "ERROR: $theme_src/fleet.script not found (run from the repo root, or set THEME_SRC)." >&2
    exit 1
}

echo "==> installing theme: $theme_src -> $dest"
mkdir -p "$dest"
cp -a "$theme_src"/. "$dest"/
plymouth-set-default-theme fleet 2>/dev/null || \
    echo "WARNING: plymouth-set-default-theme failed (plymouth-scripts missing?) — continuing" >&2

if [ ! -e /usr/lib64/plymouth/script.so ] && [ ! -e /usr/lib/plymouth/script.so ]; then
    echo "WARNING: plymouth script plugin (script.so) not found — the theme will not render." >&2
fi

echo "==> starting plymouthd (debug log: /tmp/plymouth-preview.log)"
plymouth quit 2>/dev/null || true
plymouthd --no-daemon --debug --debug-file=/tmp/plymouth-preview.log &
ply_pid=$!
trap 'plymouth quit 2>/dev/null || true; kill "$ply_pid" 2>/dev/null || true' EXIT

sleep 1
plymouth show-splash
sleep 1

emit() {
    echo "   --status=$1"
    plymouth update --status="$1" || true
    sleep "${2:-1.2}"
}

echo "==> driving the '$mode' handshake sequence"
if [ "$mode" = test ]; then
    emit mode-test 0.6
    emit net-active;  emit net-done
    emit nvme-active; emit nvme-done 1.5
else
    emit tpm-active;    emit tpm-done
    emit dot1x-active 1.6;  emit dot1x-done
    emit macsec-active; emit macsec-done
    emit net-active 1.6;    emit net-done
    emit nvme-active 1.6;   emit nvme-done 2
fi

echo "==> sequence complete; press Enter to quit the splash"
read -r _ || true