#!/bin/bash
Fail()
{
    echo "ERROR($0): $1"
    exit 1
}

IsInstalled()
{
    type "$1" > /dev/null 2>&1
    return $?
}

OUTDIR=../source
EPHFILE=lnxp1600p2200.405
# EPHURL=ftp://ssd.jpl.nasa.gov/pub/eph/planets/Linux/de405/${EPHFILE}
EPHURL=https://github.com/cosinekitty/ephemeris/raw/master/${EPHFILE}

if [[ ! -f ${EPHFILE} ]]; then
    echo ""
    echo "Ephemeris file not found: ${EPHFILE}"
    echo "Trying to download for you from:"
    echo "${EPHURL}"
    echo ""
    if IsInstalled wget; then
        wget_success=false
        for attempt in {1..10}; do
            if [[ ${attempt} > 1 ]]; then
                echo "wget failed (attempt ${attempt} of 10) -- will retry download in 9 seconds..."
                sleep 9
            fi
            if wget ${EPHURL}; then
                echo "wget successfully downloaded the ephemeris file."
                wget_success=true
                break
            fi
        done
        [[ ${wget_success} == true ]] || Fail "Could not download using wget: ${EPHFILE}"
    elif IsInstalled curl; then
        curl -L -o ${EPHFILE} ${EPHURL} || Fail "Could not download using curl: ${EPHFILE}"
    else
        echo "Neither wget nor curl is installed. Use your browser to download"
        echo "the above file from the NASA ftp site into this directory."
        echo "Then run this script again to continue."
        exit 1
    fi

    if IsInstalled sha256sum; then
        if sha256sum -c ephemeris.sha256; then
            echo "Validated download using sha256 checksum."
        else
            rm -f ${EPHFILE}
            Fail "Detected corrupt ephemeris file: failed sha256 check."
        fi
    elif IsInstalled md5sum; then
        if md5sum -c ephemeris.md5; then
            echo "Validated download using md5 checksum."
        else
            rm -f ${EPHFILE}
            Fail "Detected corrupt ephemeris file: failed md5 check."
        fi
    else
        echo "Warning: could not validate ephemeris file with md5 or sha256."
    fi
fi

echo ""
echo "Building C source code for 'generate' program."
./build || Fail "Could not build 'generate' program from source."

mkdir -pv output temp || Fail "Error creating directories."
rm -f temp/*

FASTMODE=true
for file in output/vsop_{0,1,3,4,5,6,7,11}.txt output/08.eph; do
    if [[ ! -f ${file} ]]; then
        echo "Missing required planet model file: ${file}"
        FASTMODE=false        
    fi
done

if [[ "${FASTMODE}" == "false" ]]; then
    echo ""
    echo "Generating planet models."
    rm -f output/vsop_*.txt output/*.eph
    ./generate planets || Fail "Could not generate planet models."
fi

./unit_test_js || exit $?
./unit_test_c || exit $?
./unit_test_python || exit $?

echo ""
echo "Testing example programs."
cd ../demo/c || Fail "Cannot change directory to ../demo/c"
test/test || Fail "Error testing C examples"
cd ../nodejs || Fail "Cannot change directory to ../nodejs"
test/test || Fail "Error testing nodejs examples."
cd ../../generate || Fail "Cannot change back to generate directory."

cat pass.txt
exit 0