# lib/murano-dashboard

# Dependencies:
#
# - ``functions`` file
# - ``DEST``, ``DATA_DIR``, ``STACK_USER`` must be defined
# - ``SERVICE_HOST``

# ``stack.sh`` calls the entry points in this order:
#
# - install_murano_dashboard
# - configure_murano_dashboard
# - cleanup_murano_dashboard

# Save trace setting
XTRACE=$(set +o | grep xtrace)
set -o xtrace

source $TOP_DIR/lib/horizon



# Defaults
# --------

HORIZON_CONFIG=${HORIZON_CONFIG:-$HORIZON_DIR/openstack_dashboard/settings.py}
HORIZON_LOCAL_CONFIG=${HORIZON_LOCAL_CONFIG:-$HORIZON_DIR/openstack_dashboard/local/local_settings.py}

# Set up default repos
MURANO_DASHBOARD_REPO=${MURANO_DASHBOARD_REPO:-${GIT_BASE}/openstack/murano-dashboard.git}
MURANO_DASHBOARD_BRANCH=${MURANO_DASHBOARD_BRANCH:-master}

# Set up default directories
MURANO_DASHBOARD_DIR=$DEST/murano-dashboard
MURANO_PYTHONCLIENT_DIR=$DEST/python-muranoclient

MURANO_DASHBOARD_CACHE_DIR=${MURANO_DASHBOARD_CACHE_DIR:-/tmp/murano}

MURANO_REPOSITORY_URL=${MURANO_REPOSITORY_URL:-'http://storage.apps.openstack.org/'}

# Functions
# ---------

function insert_config_block() {
    local target_file="$1"
    local insert_file="$2"
    local pattern="$3"

    if [[ -z "$pattern" ]]; then
        cat "$insert_file" >> "$target_file"
    else
        sed -ne "/$pattern/r  $insert_file" -e 1x  -e '2,${x;p}' -e '${x;p}' -i "$target_file"
    fi
}


function remove_config_block() {
    local config_file="$1"
    local label="$2"

    if [[ -f "$config_file" ]] && [[ -n "$label" ]]; then
        sed -e "/^#${label}_BEGIN/,/^#${label}_END/ d" -i "$config_file"
    fi
}


# Entry points
# ------------

# configure_murano_dashboard() - Set config files, create data dirs, etc
function configure_murano_dashboard() {
    remove_config_block "$HORIZON_CONFIG" "MURANO_CONFIG_SECTION"

    configure_settings_py
    configure_local_settings_py

    restart_apache_server
}


function configure_settings_py() {
    local horizon_config_part=$(mktemp)

    mkdir_chown_stack "$MURANO_DASHBOARD_CACHE_DIR"

    # Write changes for dashboard config to a separate file
    cat << EOF >> "$horizon_config_part"

#MURANO_CONFIG_SECTION_BEGIN
#-------------------------------------------------------------------------------
METADATA_CACHE_DIR = '$MURANO_DASHBOARD_CACHE_DIR'
DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join('$MURANO_DASHBOARD_DIR', 'openstack-dashboard.sqlite')
    }
}
SESSION_ENGINE = 'django.contrib.sessions.backends.db'
MIDDLEWARE_CLASSES += ('muranodashboard.middleware.ExceptionMiddleware',)
MURANO_REPO_URL = '$MURANO_REPOSITORY_URL'
#-------------------------------------------------------------------------------
#MURANO_CONFIG_SECTION_END

EOF

    # Insert changes into dashboard config before the line matching the pattern
    insert_config_block "$HORIZON_CONFIG" "$horizon_config_part" "from openstack_dashboard import policy"

    # Install Murano as plugin for Horizon
    ln -s $MURANO_DASHBOARD_DIR/muranodashboard/local/_50_murano.py $HORIZON_DIR/openstack_dashboard/local/enabled/
}


function configure_local_settings_py() {
    if [[ -f "$HORIZON_LOCAL_CONFIG" ]]; then
        sed -e "s/\(^\s*OPENSTACK_HOST\s*=\).*$/\1 '$HOST_IP'/" -i "$HORIZON_LOCAL_CONFIG"
    fi
}


# init_murano_dashboard() - Initialize databases, etc.
function init_murano_dashboard() {
    # clean up from previous (possibly aborted) runs
    # create required data files

    local horizon_manage_py="$HORIZON_DIR/manage.py"

    python "$horizon_manage_py" collectstatic --noinput
    python "$horizon_manage_py" syncdb --noinput

    restart_apache_server
}


# install_murano_dashboard() - Collect source and prepare
function install_murano_dashboard() {
    echo_summary "Install Murano Dashboard"

    git_clone $MURANO_DASHBOARD_REPO $MURANO_DASHBOARD_DIR $MURANO_DASHBOARD_BRANCH

    setup_develop $MURANO_DASHBOARD_DIR
}


# cleanup_murano_dashboard() - Remove residual data files, anything left over from previous
# runs that a clean run would need to clean up
function cleanup_murano_dashboard() {
    echo_summary "Cleanup Murano Dashboard"
    remove_config_block "$HORIZON_CONFIG" "MURANO_CONFIG_SECTION"
    rm $HORIZON_DIR/openstack_dashboard/local/enabled/_50_murano.py
}


# Restore xtrace
$XTRACE

# Local variables:
# mode: shell-script
# End: