#!/bin/sh
# radarr_postprocess.sh  POSIX; mapping SRC->DST + .state (mmes verrous/droits)

set -eu
umask 002

LOG="${LOG:-/srv/dev-disk-by-uuid-167c3d64-0b12-412d-9453-f941e78f8f6e/data/scripts/log/radarr_postprocess.log}"
MAP="${MAP:-/srv/dev-disk-by-uuid-167c3d64-0b12-412d-9453-f941e78f8f6e/data/scripts/mapping_entries.txt}"
STATE_DIR="${STATE_DIR:-/srv/dev-disk-by-uuid-167c3d64-0b12-412d-9453-f941e78f8f6e/data/scripts/state}"
LOCKDIR="${LOCKDIR:-${MAP}.lockdir}"
MAP_OWNER="${MAP_OWNER:-}"
MAP_GROUP="${MAP_GROUP:-}"

ts(){ date '+%F %T'; }

EVT="${radarr_eventtype:-}"
NEW="${radarr_moviefile_path:-}"
OLD="${radarr_moviefile_sourcepath:-}"
ISUP="${radarr_isupgrade:-false}"

mkdir -p "$(dirname "$LOG")" "$STATE_DIR"
: > "$LOG" 2>/dev/null || true
touch "$MAP" 2>/dev/null || true

echo "$(ts) [Start] Radarr event=${EVT}" >> "$LOG"
[ "$EVT" = "Test" ] && { echo "$(ts) [Info] Test event -> exit 0" >> "$LOG"; exit 0; }

if [ -z "$OLD" ] || [ -z "$NEW" ]; then
  echo "$(ts) [Warn] empty OLD/NEW -> skip (OLD='$OLD' NEW='$NEW')" >> "$LOG"
  exit 0
fi

i=0
while ! mkdir "$LOCKDIR" 2>/dev/null; do
  i=$((i+1)); [ $i -ge 10 ] && { echo "$(ts) [Warn] lock timeout -> write without lock" >> "$LOG"; break; }
  sleep 0.2
done

echo "RADARR|$OLD|$NEW" >> "$MAP"
chmod 664 "$MAP" 2>/dev/null || true
[ -n "$MAP_OWNER$MAP_GROUP" ] && chown "${MAP_OWNER:-}:${MAP_GROUP:-}" "$MAP" 2>/dev/null || true
rmdir "$LOCKDIR" 2>/dev/null || true

base="$(basename "$OLD" | tr ' /\"()[]' '_________')"
STATE_FILE="$STATE_DIR/${base}.state"
ADDED="$(date +%s)"
UPG=0
case "$(printf %s "$EVT" | tr '[:upper:]' '[:lower:]')" in *upgrade*) UPG=1;; esac
case "$(printf %s "$ISUP" | tr '[:upper:]' '[:lower:]')" in true) UPG=1;; esac

{
  echo "category=RADARR"
  echo "added=$ADDED"
  echo "upgrade=$UPG"
  echo "old_path=$OLD"
  echo "new_path=$NEW"
} > "$STATE_FILE"

echo "$(ts) [State] $STATE_FILE (upgrade=$UPG)" >> "$LOG"
echo "$(ts) [Done] Radarr" >> "$LOG"
exit 0