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#!/usr/bin/env bash
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set -e
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dist="lib/software-inventory"
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mkdir -p $dist
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# download and copy a single file
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download_and_copy() {
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    name=$1
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    fn="software-inventory-$name.json"
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    local="software-inventory/$name.json"
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    targ="$dist/$name.json"
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    if [[ ! -L "$local" ]]; then
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        if ! curl --silent --show-error --fail "https://storage.googleapis.com/cocalc-compute-environment/$fn" -o "$local"; then
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            echo "Error: Failed to download $fn" >&2
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            return 1
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        fi
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    fi
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    cp -v "$local" "$targ"
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}
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# we now run all downloads in parallel, wait for them, and check if any of them failed...
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pids=()
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# Start downloads in parallel
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for name in "20.04" "22.04" "24.04"; do
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    download_and_copy "$name" &
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    pids+=($!)
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done
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# Wait for all background processes to finish
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for pid in "${pids[@]}"; do
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    if ! wait $pid; then
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        echo "Error: One or more downloads failed" >&2
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        exit 1
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    fi
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done
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