bitmap

#!/bin/sh

CACHE="/tmp/p2k12_users"

update_cache() {
    curl -s https://p2k12.bitraf.no/users |
    awk '{printf $NF ":" $1; for(i=2;i<NF;++i){printf " "$i;}print ""}' | sort > $CACHE
}

test -f $CACHE || update_cache

curl -s "https://p2k12.bitraf.no/checkins/?interval=2+days&media-type=application%2Fvnd.bitraf.checkins-json" |
jq -r '[.[] | [.date[:16], .name] | join("\t")] | join("\n")' | (
while true
do
    read line || break

    time=$(echo "$line" | cut -f 1)
    user=$(echo "$line" | cut -f 2)
    name=$(look "$user:" $CACHE | head -1 | cut -d: -f 2 | sed 's/ /_/g')

    echo "$time $user $name"
done
) | column -t | sed 's/_/ /g' | awk '{if (!x) {x=$1} else if (x != $1) {x=$1} else {sub(/^........../, "          ", $0)} print $0}'