#!/usr/bin/env bash
# Opens official fixture capsules with scripts/recovery, a program that uses
# no DateKeys code (only Go, age, kyber and x/crypto), and compares what it
# recovers with the plaintext fixtures. It shows that the annex
# "Recuperación sin software DateKeys" of the specification is enough.
#
#   scripts/recovery_check.sh
set -euo pipefail
cd "$(dirname "$0")/.."

tmp=$(mktemp -d)
trap 'rm -rf "$tmp"' EXIT

fx=testdata/fixtures
rel=testdata/releases

recover_one() {
  local name=$1 round=$2
  shift 2
  echo "== $name (round $round)"
  go run ./scripts/recovery -dkc "$fx/$name.dkc" -release "$rel/$round.cbor" "$@" \
    -out "$tmp/$name" -body "$tmp/$name.body"
  cmp "$tmp/$name.body" "$fx/$name.plaintext"
  echo "files written:"
  (cd "$tmp/$name" && find . -type f | sort)
}

recover_one format3_single 1000
recover_one format3_time_and_key_portable 1000 -dkk "$fx/format3_time_and_key_portable.dkk"

# The key of words of the annex (79.7): the text of its second vector,
# "Ñandú", two spaces, "PINGÜINO", a tab and "camión árbol Éter ola", which
# normalizes without tables.
printf '\xc3\x91and\xc3\xba  PING\xc3\x9cINO\tcami\xc3\xb3n \xc3\xa1rbol \xc3\x89ter ola' >"$tmp/words.txt"
recover_one format3_time_and_key_words 1000 -words "$tmp/words.txt"

# PAYLOAD_AGE of 65536 bytes of plaintext: one full STREAM chunk, the last
# one (79.5).
recover_one format3_full_chunk 1000

echo "recovery check passed"