#!/bin/bash
set -euo pipefail

ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"

if [[ $# -lt 1 || $# -gt 2 ]]; then
    echo "Usage: $0 CANDIDATE.deb [PREVIOUS.deb]" >&2
    exit 2
fi

candidate="$(realpath "$1")"
previous=""

[[ -f "$candidate" ]] || { echo "Package not found: $candidate" >&2; exit 1; }

if [[ $# -eq 2 ]]; then
    previous="$(realpath "$2")"
    [[ -f "$previous" ]] || { echo "Package not found: $previous" >&2; exit 1; }
fi

echo "Validating $(basename "$candidate") on Debian Trixie"

docker_args=(
    run --rm -i
    -v "$candidate:/packages/candidate.deb:ro"
)

if [[ -n "$previous" ]]; then
    docker_args+=( -v "$previous:/packages/previous.deb:ro" )
fi

docker "${docker_args[@]}" debian:trixie-slim \
    bash -s -- "${previous:+/packages/previous.deb}" <<'CONTAINER'
set -euo pipefail

export DEBIAN_FRONTEND=noninteractive
apt-get update -qq

previous="${1:-}"

if [[ -n "$previous" ]]; then
    apt-get install -y -qq "$previous" >/tmp/previous-install.log

    cat > /etc/ekklesia-classroom/device.conf <<'CONFIG'
# Configuration carried forward from 0.1.36
UPDATE_URL=https://updates.riverofglorymn.org
CHANNEL=canary
DVD_ENABLED=true
UI_SCALE=1.25
MQTT_ENABLED=true
MQTT_HOST=broker.example.test
MQTT_PORT=1884
MQTT_USERNAME=classroom
MQTT_PASSWORD=preserve-me
CUSTOM_SETTING=preserve-me-too
CONFIG
fi

apt-get install -y -qq /packages/candidate.deb >/tmp/candidate-install.log

command -v nmtui >/dev/null
command -v lpadmin >/dev/null
command -v lpinfo >/dev/null

systemctl is-enabled NetworkManager.service >/dev/null
systemctl is-enabled cups.service >/dev/null
! systemctl is-enabled NetworkManager-wait-online.service >/dev/null 2>&1

grep -q '^managed=false$' /etc/NetworkManager/NetworkManager.conf

# A normal Docker container has Ethernet and no Wi-Fi adapter. Reaching this
# point proves package configuration did not require Wi-Fi hardware.
! find /sys/class/net -mindepth 2 -maxdepth 2 -type d -name wireless | grep -q .

/usr/sbin/cupsd
sleep 1

driver='foomatic-db-compressed-ppds:0/ppd/foomatic-ppd/Generic-PCL_6_PCL_XL_Printer-pxlcolor.ppd'
lpinfo -m | grep -q "^${driver} "

classroom-printer-setup 192.0.2.10 >/tmp/printer-first.log
classroom-printer-setup 192.0.2.10 >/tmp/printer-second.log
lpstat -p Classroom_Color -d -v | grep -q 'socket://192.0.2.10:9100'

if [[ -n "$previous" ]]; then
    grep -q '^CHANNEL=canary$' /etc/ekklesia-classroom/device.conf
    grep -q '^DVD_ENABLED=true$' /etc/ekklesia-classroom/device.conf
    grep -q '^UI_SCALE=1.25$' /etc/ekklesia-classroom/device.conf
    grep -q '^MQTT_PASSWORD=preserve-me$' /etc/ekklesia-classroom/device.conf
    grep -q '^CUSTOM_SETTING=preserve-me-too$' /etc/ekklesia-classroom/device.conf
    [[ "$(grep -c '^LIVE_ENABLED=' /etc/ekklesia-classroom/device.conf)" -eq 1 ]]

    apt-get install --reinstall -y -qq /packages/candidate.deb \
        >/tmp/candidate-reinstall.log
    [[ "$(grep -c '^LIVE_ENABLED=' /etc/ekklesia-classroom/device.conf)" -eq 1 ]]
fi

echo "Trixie package, upgrade, networking, printing and reinstall checks passed."
CONTAINER