# Set root of the gopath to where the shell.nix is located
GOPATH="$(pwd)"
while [ ! -e "$GOPATH/shell.nix" ] && [ "$GOPATH" != "/" ]; do
    GOPATH="$(realpath $GOPATH/..)"
done
[ -e "$GOPATH/shell.nix" ] || {
    echo "No shell.nix found in expected GOPATH. This is unexpected. GOPATH not set." 1>&2
    exit 1
}
export GOPATH="$GOPATH"

mkdir -p $GOPATH/{bin,pkg,src}
if [ ! -e "$GOPATH/.go-autopath" ]; then
    touch "$GOPATH/.go-autopath"
    echo "# Config file to configure whether or not to register GOPATH/bin in PATH automatically" >> "$GOPATH/.go-autopath"
    echo "# Generated by nixify" >> "$GOPATH/.go-autopath"
    [ -e "$GOPATH/.gitignore" ] && echo ".go-autopath" >> "$GOPATH/.gitignore"

    read -p "Automatically add GOPATH/bin to you PATH? (y/n)" -n 1 -r
    echo
    if [[ $REPLY =~ ^[Yy]$ ]] ; then
        echo "NIXIFY_GO_AUTOPATH=true" >> "$GOPATH/.go-autopath"
    else
        echo "NIXIFY_GO_AUTOPATH=false" >> "$GOPATH/.go-autopath"
    fi
fi

if [ -e "$GOPATH/.go-autopath" ]; then
    NIXIFY_GO_AUTOPATH=false
    . "$GOPATH/.go-autopath"
    if [ "$NIXIFY_GO_AUTOPATH" = "true" ]; then
        export PATH="$GOPATH/bin:$PATH"
    fi
fi