Large install helper main function (download portion)

depnotifyDownload.sh

# Call this with "install" or "download" to update the DEPNotify window and progress dialogs
depNotifyProgress() {
    last_progress_value=0
    current_progress_value=0

    if [[ "$1" == "download" ]]; then
        echo "Command: MainTitle: Downloading $APPNAME" >> $DNLOG

        # Wait for for the download to start, if it doesn't we'll bail out.
        while [ ! -f "$JAMF_DOWNLOADS/$PKG_NAME" ]; do
            userCancelProcess
            if [[ "$TIMEOUT" == 0 ]]; then
                echo "ERROR: (depNotifyProgress) Timeout while waiting for the download to start."
                {
                /bin/echo "Command: MainText: $DL_ERROR"
                echo "Status: Error downloading $PKG_NAME"
                echo "Command: DeterminateManualStep: 100"
                echo "Command: Quit: $DL_ERROR"
                } >> $DNLOG
                exit 1
            fi
            sleep 1
            ((TIMEOUT--))
        done

        # Download started, lets set the progress bar
        echo "Status: Downloading - 0%" >> $DNLOG
        echo "Command: DeterminateManual: 100" >> $DNLOG

        # Until at least 100% is reached, calculate the downloading progress and move the bar accordingly
        until [[ "$current_progress_value" -ge 100 ]]; do
            # shellcheck disable=SC2012
            until [ "$current_progress_value" -gt "$last_progress_value" ]; do
                # Check if the download is in the waiting room (it moves from downloads to the waiting room after it's fully downloaded)
                if [[ ! -e "$JAMF_DOWNLOADS/$PKG_NAME" ]]; then
                    CURRENT_DL_SIZE=$(ls -l "$JAMF_WAITING_ROOM/$PKG_NAME" | awk '{ print $5 }' | awk '{$1/=1024;printf "%.i\n",$1}')
                    userCancelProcess
                    current_progress_value=$((CURRENT_DL_SIZE * 100 / PKG_Size))
                    sleep 2
                else
                    CURRENT_DL_SIZE=$(ls -l "$JAMF_DOWNLOADS/$PKG_NAME" | awk '{ print $5 }' | awk '{$1/=1024;printf "%.i\n",$1}')
                    userCancelProcess
                    current_progress_value=$((CURRENT_DL_SIZE * 100 / PKG_Size))
                    sleep 2
                fi
            done
            echo "Command: DeterminateManualStep: $((current_progress_value-last_progress_value))" >> $DNLOG
            echo "Status: Downloading - $current_progress_value%" >> $DNLOG
            last_progress_value=$current_progress_value
        done
    fi
}