#!/command/with-contenv bashio
# shellcheck shell=bash
# vim: ft=bash
# ==============================================================================
# Prepare the Samba service for running
# ==============================================================================
declare password
declare username
declare -a interfaces=()
export HOSTNAME

# Check Login data
bashio::config.require 'username'
bashio::config.require 'password'

# Read hostname from API or setting default "hassio"
HOSTNAME=$(bashio::info.hostname)
if bashio::var.is_empty "${HOSTNAME}" || [ "${HOSTNAME}" == "null" ]; then
    bashio::log.warning "Can't read hostname, using default."
    HOSTNAME="homeassistant"
fi
bashio::log.info "Hostname: ${HOSTNAME}"

if bashio::config.has_value 'interfaces'; then
    bashio::log.debug "Interfaces from config: $(bashio::config 'interfaces')"
    for interface in $(bashio::config 'interfaces'); do
        if [ -d "/sys/class/net/${interface}" ]; then
            interfaces+=("${interface}")
        else
            bashio::log.warning "Interface ${interface} not found, skipping."
        fi
    done
else
    # Get supported interfaces
    for interface in $(bashio::network.interfaces); do
        interfaces+=("${interface}")
    done
fi

if [ ${#interfaces[@]} -eq 0 ]; then
    bashio::exit.nok 'No supported interfaces found to bind on.'
fi
bashio::log.info "Interfaces: $(printf '%s ' "${interfaces[@]}")"
bashio::log.info "Docker Interface: $(bashio::network 'network.info.docker.inerface' '.docker.interface') $(bashio::network 'network.info.docker.network' '.docker.address')"

# Generate Samba configuration.
touch /tmp/local_mount
if [[ ! -e /tmp/local_mount.json ]]; then
    echo "{}" >/tmp/local_mount.json
fi

jq ".shares = $(jq -c </tmp/local_mount.json) | .interfaces = $(jq -c -n '$ARGS.positional' --args -- "${interfaces[@]}") | .docker_interface = \"$(bashio::network 'network.info.docker.inerface' '.docker.interface')\" | .docker_net = \"$(bashio::network 'network.info.docker.network' '.docker.address')\" | .moredisks = $(jq -R -s -c 'split("\n") | map(select(length > 0)) | [ .[] | ltrimstr("/") ]' </tmp/local_mount) " /data/options.json |
    tee /config/bootconfig.json |
    tempio \
        -template /usr/share/tempio/smb.gtpl \
        -out /etc/samba/smb.conf

if [[ "${__BASHIO_LOG_LEVEL_TRACE}" -eq "${__BASHIO_LOG_LEVEL}" ]]; then
    bashio::log.info "${__BASHIO_LOG_LEVEL_TRACE} ${__BASHIO_LOG_LEVEL}"
    bashio::log.trace "Dump SMB.conf to ADDON_CONFIG/$(hostname) share"
    cp /etc/samba/smb.conf /config/smb.conf.dump
fi

function addSambaUser() { # $1 username $2 password
    username=$1
    password=$2
    addgroup "${username}"
    adduser -D -H -G "${username}" -s /bin/false "${username}"
    (
        echo "$password"
        echo "$password"
    ) |
        smbpasswd -a -s -c "/etc/samba/smb.conf" "${username}"
}

# Init user
username=$(bashio::config 'username')
password=$(bashio::config 'password')
addSambaUser "${username}" "${password}"

# Init superuser
if [ -f /tmp/cifs_network ]; then
    username="_ha_mount_user_"
    password=$(sed 's/[-]//g' /proc/sys/kernel/random/uuid | head -c 20)
    addSambaUser "${username}" "${password}"
    jq -n --arg username "${username}" --arg password "${password}" '{username:$username, password:$password}' >/tmp/auth.json
fi

# Create other users
for user in $(bashio::config 'other_users'); do
    username=$(echo "${user}" | jq -r '.username')
    password=$(echo "${user}" | jq -r '.password')
    addSambaUser "${username}" "${password}"
done

# Log exposed mounted shares
bashio::log.blue "---------------------------------------------------"
bashio::log.info "Exposed Disks Summary:\n$(awk '/\[.*\]$/{ DISK=$0; next } /.*path =(.*)/{ PATH=$0; next} /.*TM:(.*)/{ printf "%-20s %s %s#\n",DISK,PATH,$0 }' /etc/samba/smb.conf)"
bashio::log.blue "---------------------------------------------------"