#!/usr/bin/env bash
#
# Installeert Docker (moby-engine) en Azure IoT Edge op een Debian/Ubuntu VM
# en koppelt het device aan de IoT Hub.
#
# Gebruik:
#   sudo ./install.sh <DEVICE_ID> <SHARED_ACCESS_KEY>
#
# Optioneel (environment variabele):
#   IOT_HUB_HOSTNAME   IoT Hub hostname (standaard: iot-shared-v6odheqozqccs-prod.azure-devices.net)

set -euo pipefail

IOT_HUB_HOSTNAME="${IOT_HUB_HOSTNAME:-iot-shared-v6odheqozqccs-prod.azure-devices.net}"

log()  { echo -e "\n\033[1;34m==> $*\033[0m"; }
fail() { echo -e "\033[1;31mFOUT: $*\033[0m" >&2; exit 1; }

usage() {
    echo "Gebruik: sudo $0 <DEVICE_ID> <SHARED_ACCESS_KEY>"
    exit 1
}

# --- Controles -------------------------------------------------------------

[[ $# -eq 2 ]] || usage
DEVICE_ID="$1"
SHARED_ACCESS_KEY="$2"

[[ $EUID -eq 0 ]] || fail "Dit script moet als root draaien. Gebruik: sudo $0 ..."

[[ -r /etc/os-release ]] || fail "/etc/os-release niet gevonden; onbekend besturingssysteem."
# shellcheck disable=SC1091
. /etc/os-release
case "${ID}" in
    debian|ubuntu) ;;
    *) fail "Niet ondersteund OS: ${ID}. Alleen Debian en Ubuntu worden ondersteund." ;;
esac

export DEBIAN_FRONTEND=noninteractive

# --- 1. Microsoft package repository ---------------------------------------

log "Microsoft package repository toevoegen (${ID} ${VERSION_ID})"
apt-get update
apt-get install -y curl ca-certificates

TMP_DEB="$(mktemp --suffix=.deb)"
trap 'rm -f "$TMP_DEB"' EXIT
curl -fsSL "https://packages.microsoft.com/config/${ID}/${VERSION_ID}/packages-microsoft-prod.deb" -o "$TMP_DEB" \
    || fail "Kon packages-microsoft-prod.deb niet downloaden voor ${ID} ${VERSION_ID}."
apt-get install -y "$TMP_DEB"
apt-get update

# --- 2. Container engine ----------------------------------------------------

log "moby-engine installeren"
apt-get install -y moby-engine

log "Docker logging configureren (log-driver: local)"
mkdir -p /etc/docker
echo '{"log-driver": "local"}' > /etc/docker/daemon.json
systemctl restart docker

# --- 3. Azure IoT Edge ------------------------------------------------------

log "aziot-edge installeren"
apt-get install -y aziot-edge

log "IoT Edge configureren voor device '${DEVICE_ID}'"
iotedge config mp --force --connection-string \
    "HostName=${IOT_HUB_HOSTNAME};DeviceId=${DEVICE_ID};SharedAccessKey=${SHARED_ACCESS_KEY}"
iotedge config apply -c /etc/aziot/config.toml

# --- 4. Controle ------------------------------------------------------------

log "Installatie voltooid. Status:"
iotedge system status || true
echo
echo "Controleer de verbinding met: sudo iotedge check"