#!/usr/bin/env zsh

# this script translates hagrid's update logs from "per-day" format into "per-epoch" format.
(( $# > 0 )) || { echo "Usage: $0 logfiles.." >&2; exit 1; }

for f in "$@"; do
	integer next_epoch_time=0
	while read -r line; do
		timestamp=${line%% *}
		if (( timestamp >= next_epoch_time )); then
			current_epoch=$(( timestamp / (1<<15) ))
			next_epoch_time=$(( (current_epoch + 1) * (1<<15) ))
			echo writing epoch $current_epoch
		fi
		echo $line >> $current_epoch
	done < $f
done