#!/bin/sh

[ -z "$1" ] && cat <<-EOF && exit 1
	Usage:
	  dhl-tracking [TRACKING NUMBER]
EOF

data="$(curl -s "https://api-eu.dhl.com/track/shipments?trackingNumber=$1&" \
	-H "DHL-API-Key: demo-key")"  # Welp, it works

# Because jq is dumb, even if such name can't be found, it will return newline
# and a tab(?) anyway, so we have to do this nonsense.
error="$(echo "$data" | jq -er '.detail')" && echo "$error" && exit 1

estimated="$(echo "$data" | jq -r '.shipments[0].estimatedTimeOfDelivery')"
estimated_remark="$(echo "$data" | jq -r '.shipments[0].estimatedTimeOfDeliveryRemark')"
status_timestamp="$(echo "$data" | jq -r '.shipments[0].status.timestamp')"
status_location="$(echo "$data" | jq -r '.shipments[0].status.location.address.addressLocality')"
status_description="$(echo "$data" | jq -r '.shipments[0].status.description')"
status_remark="$(echo "$data" | jq -r '.shipments[0].status.remark')"
status_nextsteps="$(echo "$data" | jq -r '.shipments[0].status.nextSteps')"

echo "DHL ($1)"
[ "$estimated" = null ] || printf " %s -" "$estimated"
[ "$estimated_remark" = null ] || printf " %s\n\n" "$estimated_remark"
echo " $status_timestamp":
echo " $status_location"
echo " $status_description"
[ "$status_remark" = null ] || printf "\n\n %s" "$status_remark"
[ "$status_nextsteps" = null ] || printf "\n %s\n" "$status_nextsteps"