#!/usr/bin/env bash
set -uo pipefail

# CASAN Plan-04 — self-improve core (harness-owned) tests.
# Deterministic. Proves proposals are generated from telemetry (dry-run, no writes),
# apply is refused without approval, and an approved apply goes through the governed
# settings store (audited).

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
SI="$PROJECT_ROOT/.specify/scripts/bash/self-improve.py"
CPS="$PROJECT_ROOT/.specify/scripts/bash/control-plane-settings.py"
WORK="$(mktemp -d)"
trap 'rm -rf "$WORK"' EXIT
export CASAN_CP_STORE_FILE="$WORK/store.json"

PASS=0; FAIL=0
pass() { echo "PASS: $1"; PASS=$((PASS + 1)); }
fail() { echo "FAIL: $1"; FAIL=$((FAIL + 1)); }

echo "===== Plan-04 self-improve core (harness) ====="

# metrics telemetry
cat > "$WORK/metrics.jsonl" <<'JSON'
{"step":"01-srs","cost_usd":0.02,"status":"ok"}
{"step":"10-impl","cost_usd":0.08,"status":"ok"}
JSON
cat > "$WORK/drift.json" <<'JSON'
{"drift": true, "entries": ["golden mismatch on 03-spec"]}
JSON

# 1) propose is dry-run (no store write) and yields a cost-cap proposal
python3 "$SI" propose --metrics "$WORK/metrics.jsonl" --drift "$WORK/drift.json" > "$WORK/props.json" 2>/dev/null
grep -q "P-COST-CAP" "$WORK/props.json" && pass "propose emits cost-cap proposal from telemetry" || fail "no cost-cap proposal"
[[ ! -f "$CASAN_CP_STORE_FILE" ]] && pass "propose is dry-run (no store written)" || fail "propose wrote store (not dry-run)"

# 2) drift → security-sensitive golden proposal present
grep -q "P-GOLDEN" "$WORK/props.json" && pass "drift yields review-required golden proposal" || fail "no golden proposal"

# 3) apply WITHOUT approval => deny (fail-able: proposal != application)
set +e
python3 "$SI" apply --proposals "$WORK/props.json" --id P-COST-CAP >/dev/null 2>"$WORK/3.err"; RC=$?
set -e 2>/dev/null || true
[[ "$RC" -eq 1 ]] && grep -q "APPROVAL_REQUIRED" "$WORK/3.err" \
  && pass "apply refused without approval" || fail "apply not refused without approval (rc=$RC)"

# 4) apply WITH approval => governed set recorded in store
python3 "$SI" apply --proposals "$WORK/props.json" --id P-COST-CAP --approval human-ok >/dev/null 2>&1 \
  && pass "approved apply succeeds" || fail "approved apply failed"
VAL="$(python3 "$CPS" get cost.absolute_cap_usd 2>/dev/null | python3 -c 'import json,sys;print(json.load(sys.stdin)["value"])' 2>/dev/null)"
[[ "$VAL" == "0.12" ]] && pass "applied change persisted via governed store (value=$VAL)" || fail "governed store value unexpected (value=$VAL)"

# 5) security-sensitive golden proposal without approval => deny
set +e
python3 "$SI" apply --proposals "$WORK/props.json" --id P-GOLDEN >/dev/null 2>"$WORK/5.err"; RC=$?
set -e 2>/dev/null || true
[[ "$RC" -eq 1 ]] && grep -q "APPROVAL_REQUIRED" "$WORK/5.err" \
  && pass "sensitive proposal refused without approval" || fail "sensitive proposal not refused (rc=$RC)"

echo ""
echo "===== SELF-IMPROVE SUMMARY: PASS=$PASS FAIL=$FAIL ====="
[[ "$FAIL" -eq 0 ]] || exit 1