#!/bin/bash

function install_snap() {
    # Install and config SNAP
    # check if docker image already exists
    # TODO: "docker image inspect sen4cap/snap" might be also used instead images -q
    if [[ "$(docker images -q sen4cap/snap:8.0-proxy 2> /dev/null)" == "" ]]; then
        TARGET_SNAP_TMP_DIR="/mnt/archive/temp/$(date +%Y%m%d%H%M%S)/"
        echo "Using directory ${TARGET_SNAP_TMP_DIR} for SNAP image build working dir ..."
        mkdir -p ${TARGET_SNAP_TMP_DIR}/snap && \
        cp -fR * ${TARGET_SNAP_TMP_DIR}/snap && \
        wget -P ${TARGET_SNAP_TMP_DIR}/snap/ http://step.esa.int/downloads/8.0/installers/esa-snap_sentinel_unix_8_0.sh && \
        chmod +x ${TARGET_SNAP_TMP_DIR}/snap/esa-snap_sentinel_unix_8_0.sh && \
        docker build -t sen4cap/snap:8.0-proxy -f ${TARGET_SNAP_TMP_DIR}/snap/Dockerfile ${TARGET_SNAP_TMP_DIR}/snap/
        if [ -d ${TARGET_SNAP_TMP_DIR} ] ; then
            echo "Removing ${TARGET_SNAP_TMP_DIR} ..."
            rm -fR ${TARGET_SNAP_TMP_DIR}
        fi
    else
        echo "No need to install SNAP container, it already exists ..."
    fi
}

install_snap