#!/bin/bash
# Process IP cam recordings: condense all but newest, merge into motion.mkv
# Intended to run periodically via cron
LOCK="/tmp/ipcam-process.lock"
exec 9>"$LOCK"
flock -n 9 || exit 0
DIR="$(cd "$(dirname "$0")" && pwd)/ipcam"
CONDENSE="$(dirname "$0")/ipcam-condense.sh"
MERGE="$(dirname "$0")/ipcam-merge.sh"

# find raw recordings (not condensed, not motion.mkv), skip newest per camera
RAWS=($(ls "$DIR"/*.mkv 2>/dev/null | grep -v _condensed | grep -v motion.mkv | sort))

if [ ${#RAWS[@]} -le 1 ]; then
  exit 0
fi

# group by camera prefix, skip newest from each group
declare -A NEWEST
for f in "${RAWS[@]}"; do
  base=$(basename "$f")
  # extract camera name (everything before the timestamp)
  cam=$(echo "$base" | sed 's/_[0-9]\{8\}_[0-9]\{6\}\.mkv$//')
  NEWEST["$cam"]="$f"
done

for f in "${RAWS[@]}"; do
  base=$(basename "$f")
  cam=$(echo "$base" | sed 's/_[0-9]\{8\}_[0-9]\{6\}\.mkv$//')
  [ "$f" = "${NEWEST[$cam]}" ] && continue
  bash "$CONDENSE" "$f"
done

bash "$MERGE"