#!/bin/sh

# Adapted from: https://github.com/resin-os/meta-resin/blob/v2.12.5/meta-resin-common/recipes-containers/docker-disk/docker-resin-supervisor-disk/start-resin-supervisor

source /usr/sbin/resin-vars

if ! balena inspect $SUPERVISOR_IMAGE:$SUPERVISOR_TAG > /dev/null; then
    balena load --input /usr/src/supervisor-image.tar
fi

if [ -f /mnt/data/apps.json ]; then
    preloaded_img=$(jq --raw-output ".[0].imageId" /mnt/data/apps.json || echo "")
    if [ "$preloaded_img" != "" ] && ! balena inspect $preloaded_img; then
        balena pull $preloaded_img
    fi
fi

EXTRA_MOUNTS=""
if [ -d /resin-supervisor/dist ]; then
    EXTRA_MOUNTS="${EXTRA_MOUNTS} -v /resin-supervisor/dist:/usr/src/app/dist"
fi
if [ -d /resin-supervisor/node_modules ]; then
    EXTRA_MOUNTS="${EXTRA_MOUNTS} -v /resin-supervisor/node_modules:/usr/src/app/node_modules"
fi

if [ -f /mnt/data/backup.tgz.mounted ]; then
  cp /mnt/data/backup.tgz.mounted /mnt/data/backup.tgz
fi

SUPERVISOR_IMAGE_ID=$(balena inspect --format='{{.Id}}' $SUPERVISOR_IMAGE:$SUPERVISOR_TAG)
SUPERVISOR_CONTAINER_IMAGE_ID=$(balena inspect --format='{{.Image}}' resin_supervisor || echo "")

runSupervisor() {
    balena rm --force resin_supervisor || true
    balena run --privileged --name resin_supervisor \
        --net=host \
        -v /var/run/balena.sock:/var/run/balena.sock \
        -v $CONFIG_PATH:/boot/config.json  \
        -v /mnt/data/apps.json:/boot/apps.json \
        -v /resin-data/resin-supervisor:/data \
        -v /proc/net/fib_trie:/mnt/fib_trie \
        -v /var/log/supervisor-log:/var/log \
        -v /:/mnt/root \
        -e DOCKER_ROOT=/mnt/root/var/lib/docker \
        -e DOCKER_SOCKET=/var/run/balena.sock \
        -e BOOT_MOUNTPOINT=$BOOT_MOUNTPOINT \
        -e API_ENDPOINT=$API_ENDPOINT \
        -e REGISTRY_ENDPOINT=$REGISTRY_ENDPOINT \
        -e MIXPANEL_TOKEN=$MIXPANEL_TOKEN \
        -e DELTA_ENDPOINT=$DELTA_ENDPOINT \
        -e LED_FILE=${LED_FILE} \
        -e LISTEN_PORT=$LISTEN_PORT \
        -e SUPERVISOR_IMAGE=${SUPERVISOR_IMAGE}:${SUPERVISOR_TAG} \
        ${EXTRA_MOUNTS} \
        ${SUPERVISOR_IMAGE}:${SUPERVISOR_TAG}
}

if [ -z "$SUPERVISOR_IMAGE_ID" ]; then
    # No supervisor image exists on the device, try to pull it
    systemctl start update-resin-supervisor
elif [ "$SUPERVISOR_IMAGE_ID" = "$SUPERVISOR_CONTAINER_IMAGE_ID" ]; then
    # Supervisor image exists, and the current supervisor container is created from
    balena start --attach resin_supervisor
else
    # No supervisor container exists or there's a different supervisor image to run
    runSupervisor
fi