#!/usr/bin/env bash
# ---------------------------------------------------------------------------
# Check that generated regions in tracked files are current.
#
# The tool list inside a scenario's system prompt is generated from the backend's
# contracts module. It has to be generated rather than referenced because pi does
# not put the tool list in the prompt when --system-prompt is used: the
# customPrompt branch returns before `toolsList` is assembled, so `promptSnippet`
# and `promptGuidelines` never reach the model.
#
# That makes the prompt a copy of the tool definitions, and a copy drifts. The
# failure is quiet and bad: the model is told about a tool that no longer exists,
# or not told about one that does, and answers from memory instead of asking.
#
# Run by the pre-commit hook. The backend path comes from profile.toml, so this
# checks against the code that will actually serve the tools.
# ---------------------------------------------------------------------------
# shellcheck source=lib/common.sh
. "$(dirname "${BASH_SOURCE[0]}")/lib/common.sh"

FIX=0
[ "${1:-}" = "--fix" ] && FIX=1

STALE=0
CHECKED=0

while IFS= read -r profile; do
  name="$(basename "$(dirname "$profile")")"
  backend="$(toml_get "$profile" scenario backend)"
  [ -n "$backend" ] || continue
  [ -d "$backend" ] || { warn "$name: backend not found: $backend"; continue; }

  while IFS= read -r prompt; do
    [ -f "$prompt" ] || continue
    grep -q 'BEGIN GENERATED TOOL LIST' "$prompt" || continue
    CHECKED=$((CHECKED + 1))
    rel="${prompt#"$REPO_ROOT"/}"
    if PYTHONPATH="$backend" python3 - "$prompt" "$FIX" <<'PY'
import pathlib, sys
from curator import contracts
path, fix = pathlib.Path(sys.argv[1]), sys.argv[2] == "1"
text = path.read_text(encoding="utf-8")
current = contracts.splice_tool_prose(text)
if current == text:
    sys.exit(0)
if fix:
    path.write_text(current, encoding="utf-8")
    sys.exit(0)
sys.exit(1)
PY
    then
      if [ "$FIX" -eq 1 ]; then ok "$rel"; else ok "$rel"; fi
    else
      STALE=$((STALE + 1))
      warn "stale generated region: $rel"
    fi
  done < <(find "$(dirname "$profile")/workspace" -name '*.md' -type f 2>/dev/null | sort)
done < <(find "$REPO_ROOT/scenarios" -mindepth 2 -maxdepth 2 -name profile.toml | sort)

if [ "$STALE" -gt 0 ]; then
  die "$STALE generated region(s) out of date. Regenerate with:
       scripts/verify-generated.sh --fix"
fi
ok "verify-generated: $CHECKED file(s) checked, all current"