export PRISM_BASE_URL="https://api.prismgateway.io/v1"
export PRISM_API_KEY="sk-prism-..."

prism_get_json() {
  local response status body action help_url
  if ! response="$(curl -sS -w '\n%{http_code}' "$@")"; then
    echo "เชื่อมต่อ Prism API ไม่ได้" >&2
    return 1
  fi
  status="${response##*$'\n'}"
  body="${response%$'\n'*}"
  if ! echo "$body" | jq -e . >/dev/null; then
    printf 'Prism คืน JSON ไม่ถูกต้อง (HTTP %s)\n' "$status" >&2
    return 1
  fi
  case "$status" in
    2??) printf '%s' "$body"; return 0 ;;
  esac

  echo "$body" | jq . >&2
  if [ "$status" = "402" ]; then
    action="$(echo "$body" | jq -r '.error.action // empty')"
    help_url="$(echo "$body" | jq -r '.error.help_url // empty')"
    case "$action" in
      top_up) echo "เติมเครดิต: $help_url" >&2 ;;
      contact_org_admin) echo "ติดต่อผู้ดูแลองค์กร" >&2 ;;
    esac
  fi
  return 1
}

PRISM_CREDIT_SUMMARY="$(
  prism_get_json "$PRISM_BASE_URL/credits" \
    -H "Authorization: Bearer $PRISM_API_KEY"
)" || exit 1
echo "$PRISM_CREDIT_SUMMARY" | jq '{balance_minor, spent_minor}'

PRISM_TRIAL_POLICY="$(
  prism_get_json "$PRISM_BASE_URL/trial-policy"
)" || exit 1
PRISM_MODEL_CATALOG="$(
  prism_get_json "$PRISM_BASE_URL/models" \
    -H "Authorization: Bearer $PRISM_API_KEY"
)" || exit 1

export PRISM_MODEL="$(
  jq -nr \
    --argjson policy "$PRISM_TRIAL_POLICY" \
    --argjson catalog "$PRISM_MODEL_CATALOG" \
    '$policy.allowed_models as $allowed |
      first($catalog.data[].id |
        select(. as $id | $allowed | index($id))) // empty'
)"

test -n "$PRISM_MODEL" || {
  echo "API key นี้ไม่มี trial chat model ที่เรียกได้" >&2
  exit 1
}

curl -sS "$PRISM_BASE_URL/chat/completions" \
  -H "Authorization: Bearer $PRISM_API_KEY" \
  -H "Content-Type: application/json" \
  -d "$(jq -n --arg model "$PRISM_MODEL" '{
    model: $model,
    messages: [{role: "user", content: "สวัสดี"}]
  }')"