#!/bin/sh
# Records Kepr 2's §22.4 compatibility routes from kepr.uk, GET only, into this folder:
# <slug>.headers (status line plus the headers the contract tests read) and <slug>.body.
# Downloads are recorded without their body (`--max-filesize 1` stops before the file).
# Re-run before cutover (§28) and review the diff.
set -eu
out=$(cd "$(dirname "$0")" && pwd)
tmp=$(mktemp -d)
rec() { # path [nobody]
  slug=$(printf '%s' "$1" | sed 's#^/##; s#/#_#g')
  # A fresh file each time, so a failed request can never leave the previous one's headers behind.
  raw=$(mktemp "$tmp/headers.XXXXXX")
  code=0
  if [ "${2:-}" = nobody ]; then
    curl -sS -D "$raw" -o /dev/null --max-filesize 1 "https://kepr.uk$1" || code=$?
    # 63 is curl stopping at --max-filesize, the expected end of a download once its headers are in.
    [ "$code" = 63 ] && code=0
  else
    curl -sS -D "$raw" -o "$out/$slug.body" "https://kepr.uk$1" || code=$?
  fi
  if [ "$code" != 0 ] || [ ! -s "$raw" ]; then
    echo "$1: request failed (curl exit $code)" >&2
    exit 1
  fi
  { head -1 "$raw" | tr -d '\r'; grep -i -E '^(content-type|access-control-allow-origin|location|cache-control|content-disposition):' "$raw" | tr -d '\r' || true; } > "$out/$slug.headers"
  echo "$1 -> $(head -1 "$out/$slug.headers")"
}
for r in haven kepr koh nina peach-android; do
  rec /api/$r/releases/latest
  rec /api/$r/releases/history
  rec /$r/update-info
  rec /$r/meta
  rec /$r/releases/latest
  rec /$r/releases/latest/version.txt
  v=$(cat "$out/${r}_releases_latest_version.txt.body")
  rec /$r/releases/$v/checksums.txt
  p=$(sed 's/.*"platforms":{"\([^"]*\)".*/\1/' "$out/api_${r}_releases_latest.body")
  rec /$r/releases/$v/$p nobody
  rec /$r/releases/$v/$r-$p nobody
done
rec /api/koh/releases/latest
for p in linux-x86_64 macos-aarch64; do rec /api/koh/releases/2.1.0/$p nobody; done
rec /api/koh/releases/2.1.16/linux-x86_64
rec /api/peach-relay/releases/latest
rec /api/peach-relay/releases/history
rec /peach-relay/meta
rec /peach-relay/update-info
rec /api/nowhere/releases/latest