#!/bin/sh

set -e

if [[ $# -ne 5 ]] ; then
    echo "Usage: $0 ref normal1 normal2 tumour1 tumour2"
    exit 1
fi

function cleanup {
    if [[ -e tnpair-$$ ]]; then
        rm tnpair-$$
    fi
}
trap cleanup INT TERM EXIT

ref=`readlink -f $1`
norm1=`readlink -f $2`
norm2=`readlink -f $3`
tumour1=`readlink -f $4`
tumour2=`readlink -f $5`

refhash=`nix-hash --base32 --type sha256 --flat $ref`
norm1hash=`nix-hash --base32 --type sha256 --flat $norm1`
norm2hash=`nix-hash --base32 --type sha256 --flat $norm2`
tumour1hash=`nix-hash --base32 --type sha256 --flat $tumour1`
tumour2hash=`nix-hash --base32 --type sha256 --flat $tumour2`

cat > tnpair-$$ <<EOF
import ./tnpair.nix {
    normal = {
        input1={
            url="file://$norm1";
            sha256="$norm1hash";
        };
        input2={
            url="file://$norm2";
            sha256="$norm2hash";
        };
    };
    tumour = {
        input1={
            url = "file://$tumour1";
            sha256 = "$tumour1hash";
        };
        input2={
            url = "file://$tumour2";
            sha256 = "$tumour2hash";
        };
    };
    ref = {
        url = "file://$ref";
        sha256 = "$refhash";
    };
}
EOF

nix build --keep-going "(import ./tnpair-$$)"