#!/usr/bin/env bash

# SPDX-FileCopyrightText: 2022 fosslinux <fosslinux@aussies.space>
#
# SPDX-License-Identifier: GPL-3.0-or-later

check_source() {
    local distfiles="${1}"
    local url="${2}"
    local checksum="${3}"
    local fname="${4}"
    # Default to basename of url if not given
    fname="${fname:-$(basename "${url}")}"

    local dest_path="${distfiles}/${fname}"
    echo "${checksum}  ${dest_path}" | sha256sum -c
}

set -e

cd "$(dirname "$(readlink -f "$0")")"
mkdir -p distfiles
options=$(mktemp)

# shellcheck disable=SC2064
trap "rm -f $options" EXIT

# shellcheck disable=SC2028
{
    echo fail
    echo location
    echo parallel
    echo silent
    echo write-out = '"%{http_code} %{url} %{errormsg}\n"'
    echo
} > "$options"

# First, try to download anything missing - ignore failing mirrors
for entry in steps/*; do
    [ -e "${entry}/sources" ] || continue

    # shellcheck disable=SC2162
    while read -a array; do
        {
            echo url = "${array[0]}"
            echo output = "distfiles/${array[2]:-$(basename "${array[0]}")}"
            echo
        } >> "$options"
    done < "${entry}/sources"
done

curl -K "$options"

# Then, check if everything has been obtained at least once
for entry in steps/*; do
    [ -e "${entry}/sources" ] || continue

    # shellcheck disable=SC2162
    while read line; do
        # This is intentional - we want to split out ${line} into separate arguments.
        # shellcheck disable=SC2086
        check_source distfiles ${line}
    done < "${entry}/sources"
done