#!/usr/bin/env bash
# Enumerate Arcodange recurring invoice templates.
#
# The Dolibarr API doesn't expose a list endpoint for templates. We probe
# ids 1..MAX and stop after N consecutive empty hits. An "empty" template
# has `id == null` (Dolibarr returns 200 with a hollow object for unknown ids).
#
# Usage:
#   list-templates.sh [--max-id N]   # default 50

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
DOL_CURL="${SCRIPT_DIR}/../../dolibarr/scripts/dol-curl.sh"

MAX_ID=50
EMPTY_TOLERANCE=5    # stop after this many consecutive empties
while [[ $# -gt 0 ]]; do
  case "$1" in
    --max-id) MAX_ID="$2"; shift 2 ;;
    -h|--help) sed -n '2,12p' "$0" | sed 's/^# \{0,1\}//'; exit 0 ;;
    *) echo "list-templates.sh: unknown arg: $1" >&2; exit 2 ;;
  esac
done

WORK="$(mktemp -d -t dtmpl.XXXXXX)"
trap 'rm -rf "${WORK}"' EXIT

CONSECUTIVE_EMPTY=0
FOUND=()
for id in $(seq 1 "${MAX_ID}"); do
  if ! "${DOL_CURL}" "/invoices/templates/${id}" > "${WORK}/${id}.json" 2>/dev/null; then
    # Network / auth error — bail rather than mis-classify
    echo "list-templates.sh: error fetching id=${id}, stopping probe" >&2
    break
  fi
  REAL=$(python3 -c "import json,sys; d=json.load(open(sys.argv[1])); print('1' if d.get('id') else '0')" "${WORK}/${id}.json")
  if [[ "${REAL}" == "1" ]]; then
    FOUND+=("${id}")
    CONSECUTIVE_EMPTY=0
  else
    CONSECUTIVE_EMPTY=$((CONSECUTIVE_EMPTY+1))
    rm "${WORK}/${id}.json"
    if [[ ${CONSECUTIVE_EMPTY} -ge ${EMPTY_TOLERANCE} ]]; then
      break
    fi
  fi
done

echo "# Probed ids 1..${id}, found ${#FOUND[@]} template(s) (stopped after ${EMPTY_TOLERANCE} consecutive empties)"
echo

if [[ ${#FOUND[@]} -eq 0 ]]; then
  echo "# (no recurring templates found)"
  exit 0
fi

python3 - "${WORK}" "${FOUND[@]}" <<'PY'
import json, sys, os, datetime
work = sys.argv[1]
ids  = sys.argv[2:]

print(f"{'id':>3}  {'ref':<28} {'socid':>5}  {'freq':<10} {'gen':>6} {'next':<12} {'last':<12} {'sus':>3} {'auto_val':>8}  {'total_ht':>10}")
print("-" * 115)
for iid in ids:
    d = json.load(open(os.path.join(work, f"{iid}.json")))
    freq_n  = int(d.get("frequency") or 0)
    freq_u  = d.get("unit_frequency") or ""
    freq_str = f"every {freq_n}{freq_u}" if freq_n else "OFF (0)"
    nb_done = d.get("nb_gen_done") or "0"
    nb_max  = d.get("nb_gen_max")  or "0"
    gen     = f"{nb_done}/{nb_max}" if nb_max != "0" else f"{nb_done}/∞"
    nextd   = d.get("date_when")     or "-"
    lastd   = d.get("date_last_gen") or "-"
    sus     = d.get("suspended")   or "0"
    autoval = d.get("auto_validate") or "0"
    print(f"{iid:>3}  {(d.get('ref') or d.get('title') or '-'):<28} {str(d.get('socid') or '-'):>5}  {freq_str:<10} {gen:>6} {nextd[:10]:<12} {lastd[:10]:<12} {sus:>3} {autoval:>8}  {d.get('total_ht','-'):>10}")
PY