#!/usr/bin/env bash
set -euo pipefail

# Hitta scriptets egen katalog
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

# Standardvärden
DIR="."  # <-- katalogen man står i
PREFIX="[WUNF]_"
CSV="wunf_scenes.csv"
EXT="mp4"
LOG_DIR="${HOME}/log"
LOG_FILE="${LOG_DIR}/run_wunf.log"
SCAN_SCRIPT="${SCRIPT_DIR}/scan_and_prefix_pink.sh"
UPDATE_SCRIPT="${SCRIPT_DIR}/wunf_upd_prefix.sh"

# Skapa loggmapp om den inte finns
mkdir -p "$LOG_DIR"

# Starta loggning: både stdout och stderr till loggfil + terminal
exec > >(tee -a "$LOG_FILE") 2>&1

echo "============================================================"
echo " Körning startad: $(date)"
echo " Script: $0"
echo " Loggfil: $LOG_FILE"
echo "============================================================"

usage() {
  cat <<EOF
Usage: $(basename "$0") [options]

Kör scan + prefix och uppdatera därefter prefix i CSV-listan.

Options:
  -d, --dir <path>        Katalog att skanna (default: .)
  -p, --prefix <str>      Prefix att sätta (default: [WUNF]_)
  -c, --csv <file>        CSV-fil att använda (default: wunf_scenes.csv)
  -e, --ext <ext>         Filändelse att matcha (default: mp4)
  -h, --help              Visa denna hjälp

Exempel:
  $(basename "$0") --dir . --prefix "[WUNF]_"
EOF
}

# --- Parse args ---
while [[ $# -gt 0 ]]; do
  case "$1" in
    -d|--dir)    DIR="${2:-}"; shift 2 ;;
    -p|--prefix) PREFIX="${2:-}"; shift 2 ;;
    -c|--csv)    CSV="${2:-}"; shift 2 ;;
    -e|--ext)    EXT="${2:-}"; shift 2 ;;
    -h|--help)   usage; exit 0 ;;
    *) echo "Okänd flagga: $1"; usage; exit 1 ;;
  esac
done

# --- Kontroller ---
[[ -d "$DIR" ]] || { echo "Fel: katalogen finns ej: $DIR" >&2; exit 1; }
[[ -x "$SCAN_SCRIPT" ]] || { echo "Fel: saknar körbart $SCAN_SCRIPT" >&2; exit 1; }
[[ -x "$UPDATE_SCRIPT" ]] || { echo "Fel: saknar körbart $UPDATE_SCRIPT" >&2; exit 1; }

# --- Cleanup-hantering ---
LIST_FILE="$(mktemp -t wunf_filenames.XXXXXX.txt)"
cleanup() {
  rm -f "$LIST_FILE"
  echo "Tillfällig fil raderad: $LIST_FILE"
  echo "Körning avslutad: $(date)"
  echo "============================================================"
}
trap cleanup EXIT INT TERM

echo "==> Steg 1: Scannar och sätter prefix (${PREFIX}) i ${DIR}"
"$SCAN_SCRIPT" "$DIR" --prefix "$PREFIX"

echo "==> Steg 2: Skapar fil-lista för filer med prefix (${PREFIX}) och .${EXT}"
escaped_prefix_for_glob="$(printf '%s' "${PREFIX}" | sed -e 's/\[/\\[/g' -e 's/]/\\]/g')"
pattern="${escaped_prefix_for_glob}*.${EXT}"

pushd "$DIR" > /dev/null
# shellcheck disable=SC2086
ls -1d --quoting-style=literal $pattern > "$LIST_FILE" 2>/dev/null || true
popd > /dev/null

if [[ ! -s "$LIST_FILE" ]]; then
  echo "Inga filer matchade '${PREFIX}*.${EXT}' i ${DIR}." >&2
  exit 2
fi

echo "==> Hittade $(wc -l < "$LIST_FILE" | tr -d ' ') filer. Kör uppdateringsscriptet…"
"$UPDATE_SCRIPT" --list "$LIST_FILE" "$CSV"

echo "==> Klart!"