#!/usr/bin/env bash
# tests/fixtures/phase-lib/progress.sh -- the fixture's stand-in for progress.mjs.
#
# Same job and same contract: read the child's JSON stream on stdin, write the final
# assistant text to $1, exit non-zero when the stream produced no report.
set -uo pipefail

out="$1"; shift
text=""
while IFS= read -r line; do
  case "$line" in
    *'"type": "message_end"'* | *'"type":"message_end"'*)
      t="$(printf '%s' "$line" | sed -n 's/.*"text": *"\([^"]*\)".*/\1/p')"
      [[ -n "$t" ]] && text="$t"
      ;;
  esac
done

if [[ -z "$text" ]]; then
  printf '(no final assistant message)\n' > "$out"
  exit 1
fi
printf '%s\n' "$text" > "$out"