#!/usr/bin/env bash
set -euo pipefail
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
SKILL_ROOT="$(dirname "$SCRIPT_DIR")"
source "$SCRIPT_DIR/_common.sh"

: "${INPUT_DIR:=}"
: "${INPUT_FILES:=}"
: "${OUTPUT_DIR:=$SKILL_ROOT/outputs}"

main() {
  need find; need sort; need awk; need wc; need tr
  pick_hasher >/dev/null
  if [[ -z "$INPUT_DIR" && -z "$INPUT_FILES" ]]; then die "Set INPUT_DIR or INPUT_FILES."; fi
  if [[ -n "$INPUT_DIR" && ! -d "$INPUT_DIR" ]]; then die "INPUT_DIR not a directory: $INPUT_DIR"; fi
  mkdir -p "$OUTPUT_DIR/runs"
  log_info "Preflight OK."
}
main "$@"