#!/usr/bin/env bash
# auto-phase.sh — run the full phased pipeline, no LLM in the loop.
#
# Processes every file in .agent/phases/todo/ in alphanumerical order.
# Each phase runs in its own pi process (fresh context); on failure the
# executor's session is resumed for up to MAX_FIX_ATTEMPTS fixer rounds.
# A phase moves to .agent/phases/complete/ only after the child exits 0
# AND .agent/validate.sh passes. Stops at the first phase that cannot be
# completed — re-run this script to continue where it stopped.
#
# Env: see SKILL.md (MAX_FIX_ATTEMPTS, PHASE_MODEL, PHASE_THINKING,
#      PHASE_COMMIT, PI_TRUST, FRESH_FIX).
set -uo pipefail
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source "$SCRIPT_DIR/lib.sh"

# Make interruptions visible: state stays in .agent/phases/todo, and the
# failed executor's session is still resumable on the next run.
trap 'echo; echo "✗ ERROR: interrupted (SIGINT) — ${phase:-the pipeline} is left in $PHASE_TODO/; re-run to continue where it stopped" >&2; exit 130' INT
trap 'echo; echo "✗ ERROR: interrupted (SIGTERM) — ${phase:-the pipeline} is left in $PHASE_TODO/; re-run to continue where it stopped" >&2; exit 143' TERM

cd "$(find_root)" || die "no .agent/phases/todo found in this or parent directories (run /to-phase or /audit-create first)"

build_pi_args
delivered=()
while phase="$(next_phase)"; do
  [[ -n "$phase" ]] || break
  if ! execute_phase "$phase"; then
    echo "✗ ERROR: pipeline stopped — $phase FAILED after $MAX_FIX_ATTEMPTS attempts" >&2
    echo "  fix the issues above, then re-run this script to continue where it stopped" >&2
    exit 1
  fi
  delivered+=("$phase")
done

echo
echo "✓ pipeline done — ${#delivered[@]} phase(s) delivered this run: ${delivered[*]:-none}"
remaining="$(ls -1 "$PHASE_TODO" 2>/dev/null | grep -cE '^[0-9]' || true)"
echo "  remaining in $PHASE_TODO/: $remaining"