#!/bin/sh

set -e

VAR_PATH='/var/samba'
INIT_FLAG_FILE='initialized'

user_aG() {
    UNAME="$1"
    GNAME="$2"
    GRP_LINE=$(grep -E "^${GNAME}:" /etc/group 2>/dev/null)
    if [[ ! ${GRP_LINE} =~ ':$' ]]; then
        UNAME=",$UNAME"
    fi
    sed -i "s/${GRP_LINE}/${GRP_LINE}${UNAME}/" /etc/group
}

FLAG_PATH="$VAR_PATH/$INIT_FLAG_FILE"
if [ ! -f "$FLAG_PATH" ]; then
    addgroup -S -g "$GID_PUBLIC" public
    addgroup -S -g "$GID_PROTECT" protect
    addgroup -S -g "$GID_PRIVATE" private

    if [ $(id -u guest) -ne $UID_GUEST ]; then
        deluser --remove-home guest 2>/dev/null
        adduser -SHD -s /sbin/nologin -G public -u "$UID_GUEST" guest
    fi
    adduser -SHD -s /sbin/nologin -G private -u "$UID_ADMIN" "$ADMIN_NAME"
    user_aG "$ADMIN_NAME" protect
    user_aG "$ADMIN_NAME" public

    cat <<-EOF | smbpasswd -a "$ADMIN_NAME"
$ADMIN_PASSWD
$ADMIN_PASSWD
EOF

    sed "s/%SAMBA_ADMIN%/$ADMIN_NAME/g" /etc/samba/smb.conf.temp > /etc/samba/smb.conf
    rm /etc/samba/smb.conf.temp
        
    mkdir -p "$VAR_PATH"
    touch "$FLAG_PATH"
fi

exec smbd --foreground --no-process-group