wut-get-waterfall-range Download a range of waterfalls

wut-get-waterfall-range

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+#!/bin/bash
+# wut-get-waterfall-range
+# Usage:
+# wut-get-waterfall-range [Observation ID Minumum]  [Observation ID Maximum]
+# Example:
+# wut-get-waterfall-range 1292461 1470525
+# Download Observation: JSON and waterfall. Not audio or data files.
+# This will download the observation on the command line and every one before it.
+#
+# The last observation to start in 2019 was 1470525
+# The last observation to start in 2019-11 was 1292461
+# NOTE! Observations are not in numerical order by chronology.
+# It looks like it is ordered by scheduling, so an older observation can have
+# a higher observation ID.
+#
+# So to get mostly all of the observations in December, 2019, run:
+# wut-get-waterfall-range 1292461 1470525
+
+DOWNDIR="download"
+
+cd $DOWNDIR || exit
+
+# XXX Should check input is sane...
+OBSIDMIN="$1"
+OBSIDMAX="$2"
+OBSID=$OBSIDMAX
+
+# Download JSON
+while [ $OBSID -gt $OBSIDMIN ]
+	do echo "Observation ID: $OBSID"
+	mkdir -p $OBSID
+	cd $OBSID
+	# Download if is isn't there already
+	[ ! -f $OBSID.json ] && curl					\
+		--http2 --ipv4						\
+		--silent						\
+		--output $OBSID.json					\
+		"https://network.satnogs.org/api/observations/?id=$OBSID&ground_station=&satellite__norad_cat_id=&transmitter_uuid=&transmitter_mode=&transmitter_type=&vetted_status=&vetted_user=&start=&end="
+	WATERURL=`cat $OBSID.json | jq --compact-output '.[0] | {waterfall}' | cut -f 2- -d : | sed -e 's/}//g' -e 's/http:/https:/g' -e 's/"//g'`
+	WATERFILE=`basename $WATERURL`
+	[ ! -f $WATERFILE ] &&						\
+	curl								\
+		--silent						\
+		--http2 --ipv4						\
+		--continue-at -						\
+		--remote-time						\
+		--output $WATERFILE					\
+		$WATERURL && sleep 1
+	cd ..
+	let OBSID=$OBSID-1
+done
+
+exit 0
+