#!/bin/bash

#############################################################################
##
## Copyright (C) 2017 The Qt Company Ltd.
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## This file is part of the test suite of the Qt Toolkit.
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## $QT_BEGIN_LICENSE:LGPL21$
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# A helper script used for downloading a file from a URL or an alternative
# URL. Also the SHA1 is checked for the file. Target filename should also
# be given.
#
# If called directly from another script, it will exit the parent script
# as well, if not called in its own subshell with parentheses.

# shellcheck source=try_catch.sh
source "${BASH_SOURCE%/*}/try_catch.sh"

ExceptionDownloadPrimaryUrl=100
ExceptionDownloadAltUrl=101
ExceptionSHA1=102

function DownloadURL {
    url=$1
    url_alt=$2
    expectedSha1=$3
    targetFile=$4

    try
    (
        try
        (
            echo "Downloading from primary URL '$url'"
            curl --fail -L --retry 5 --retry-delay 5 -o "$targetFile" "$url" || throw $ExceptionDownloadPrimaryUrl
        )
        catch || {
            case $ex_code in
                $ExceptionDownloadPrimaryUrl)
                    echo "Failed to download '$url' multiple times"
                    echo "Downloading tar.gz from alternative URL '$url_alt'"
                    curl --fail -L --retry 5 --retry-delay 5 -o "$targetFile" "$url_alt" || throw $ExceptionDownloadAltUrl
                ;;
            esac
        }
        echo "Checking SHA1 on PKG '$targetFile'"
        echo "$expectedSha1 *$targetFile" > $targetFile.sha1
        shasum --check $targetFile.sha1 || throw $ExceptionSHA1
    )

    catch || {
        case $ex_code in
            $ExceptionDownloadAltUrl)
                echo "Failed downloading PKG from primary and alternative URLs"
                exit 1;
            ;;
            $ExceptionSHA1)
                echo "Failed checksum on $targetFile."
                exit 1;
            ;;
        esac
    }
}

