#!/usr/bin/env bash
# auto-phase.sh — run the full phased pipeline, no LLM in the loop.
#
# Processes every pending task in .agents/phases/todo/ in pipeline order
# (phase order, then task order within each phase). Each task runs in its
# own pi process (fresh context); .agents/validate.sh runs after EVERY task.
# On failure the executor's session is resumed for up to MAX_FIX_ATTEMPTS
# fixer rounds. A task moves to .agents/phases/complete/ only after the
# child exits 0 AND validation passes; a phase completes when its
# 00_phase.md final pass succeeds (legacy phases: when their file moves).
# Stops at the first task 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 .agents/phases/todo, and the
# failed executor's session is still resumable on the next run.
trap 'echo; echo "✗ ERROR: interrupted (SIGINT) — ${unit:-the pipeline} is left in $PHASE_TODO/; re-run to continue where it stopped" >&2; exit 130' INT
trap 'echo; echo "✗ ERROR: interrupted (SIGTERM) — ${unit:-the pipeline} is left in $PHASE_TODO/; re-run to continue where it stopped" >&2; exit 143' TERM

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

build_pi_args
delivered=()
while unit="$(next_unit)"; do
  [[ -n "$unit" ]] || break
  if ! execute_unit "$unit"; then
    # execute_unit printed the failure detail (task failure: errors, logs,
    # resume command — or phase-commit failure: the hand-fix command).
    echo "✗ ERROR: pipeline stopped — $unit did not complete (see the error output above)" >&2
    echo "  re-run this script to continue where it stopped" >&2
    exit 1
  fi
  delivered+=("$unit")
  # Notify after every unit completes: a phase-end (00_phase.md / legacy file)
  # announces the phase; a normal task file announces the task.
  if is_phase_end "$unit"; then notify_task "$unit" phase; else notify_task "$unit" task; fi
done

echo
echo "✓ pipeline done — ${#delivered[@]} task(s) delivered this run: ${delivered[*]:-none}"
remaining="$(count_units)"
echo "  remaining in $PHASE_TODO/: $remaining task(s)"