#!/usr/bin/env bash
#
# Shared package helpers for Docker E2E scripts.
# Builds or resolves one OpenClaw npm tarball and exposes mount/build-context
# helpers so Docker lanes test the package artifact instead of repo sources.

DOCKER_E2E_PACKAGE_LIB_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
ROOT_DIR="${ROOT_DIR:-$(cd "$DOCKER_E2E_PACKAGE_LIB_DIR/../.." && pwd)}"

if ! declare -F run_logged >/dev/null 2>&1; then
  source "$DOCKER_E2E_PACKAGE_LIB_DIR/docker-e2e-logs.sh"
fi
if ! declare -F docker_e2e_docker_cmd >/dev/null 2>&1; then
  source "$DOCKER_E2E_PACKAGE_LIB_DIR/docker-e2e-container.sh"
fi
if ! declare -F docker_e2e_docker_run_resource_args >/dev/null 2>&1; then
  docker_e2e_resource_limits_disabled() {
    case "${OPENCLAW_DOCKER_E2E_DISABLE_RESOURCE_LIMITS:-}" in
      1 | true | TRUE | yes | YES | on | ON)
        return 0
        ;;
    esac
    return 1
  }

  docker_e2e_resource_value_disabled() {
    case "${1:-}" in
      "" | 0 | none | NONE | off | OFF | false | FALSE)
        return 0
        ;;
    esac
    return 1
  }

  docker_e2e_detect_available_cpus() {
    if [ -n "${OPENCLAW_DOCKER_E2E_AVAILABLE_CPUS:-}" ]; then
      printf '%s\n' "$OPENCLAW_DOCKER_E2E_AVAILABLE_CPUS"
      return 0
    fi
    if command -v nproc >/dev/null 2>&1; then
      nproc
      return 0
    fi
    if command -v getconf >/dev/null 2>&1; then
      getconf _NPROCESSORS_ONLN
      return 0
    fi
    return 1
  }

  docker_e2e_resolve_cpus() {
    local requested="$1"
    local available=""
    available="$(docker_e2e_detect_available_cpus 2>/dev/null || true)"
    if [[ "$requested" =~ ^[0-9]+$ ]] && [[ "$available" =~ ^[0-9]+$ ]] && [ "$requested" -gt "$available" ]; then
      printf '%s\n' "$available"
      return 0
    fi
    printf '%s\n' "$requested"
  }

  docker_e2e_run_arg_present() {
    local option="$1"
    shift
    local arg
    for arg in "$@"; do
      if [ "$arg" = "$option" ] || [[ "$arg" == "$option="* ]]; then
        return 0
      fi
      case "$option:$arg" in
        --memory:-m | --memory:-m=*)
          return 0
          ;;
      esac
    done
    return 1
  }

  docker_e2e_docker_run_resource_args() {
    DOCKER_E2E_RUN_RESOURCE_ARGS=()
    if docker_e2e_resource_limits_disabled; then
      return 0
    fi

    local memory="${OPENCLAW_DOCKER_E2E_MEMORY:-8g}"
    local cpus="${OPENCLAW_DOCKER_E2E_CPUS:-16}"
    local pids_limit="${OPENCLAW_DOCKER_E2E_PIDS_LIMIT:-2048}"
    cpus="$(docker_e2e_resolve_cpus "$cpus")"

    if ! docker_e2e_resource_value_disabled "$memory" && ! docker_e2e_run_arg_present --memory "$@"; then
      DOCKER_E2E_RUN_RESOURCE_ARGS+=(--memory "$memory")
    fi
    if ! docker_e2e_resource_value_disabled "$cpus" && ! docker_e2e_run_arg_present --cpus "$@"; then
      DOCKER_E2E_RUN_RESOURCE_ARGS+=(--cpus "$cpus")
    fi
    if ! docker_e2e_resource_value_disabled "$pids_limit" && ! docker_e2e_run_arg_present --pids-limit "$@"; then
      DOCKER_E2E_RUN_RESOURCE_ARGS+=(--pids-limit "$pids_limit")
    fi
  }
fi
if ! declare -F docker_e2e_docker_run_cmd >/dev/null 2>&1; then
  docker_e2e_docker_run_cmd() {
    if [ "${1:-}" = "run" ]; then
      shift
      docker_e2e_docker_run_resource_args "$@"
      if declare -F docker_e2e_timeout_cmd >/dev/null 2>&1; then
        if [ "${#DOCKER_E2E_RUN_RESOURCE_ARGS[@]}" -gt 0 ]; then
          docker_e2e_timeout_cmd "${DOCKER_COMMAND_TIMEOUT:-${OPENCLAW_DOCKER_E2E_RUN_TIMEOUT:-3600s}}" docker run "${DOCKER_E2E_RUN_RESOURCE_ARGS[@]}" "$@"
        else
          docker_e2e_timeout_cmd "${DOCKER_COMMAND_TIMEOUT:-${OPENCLAW_DOCKER_E2E_RUN_TIMEOUT:-3600s}}" docker run "$@"
        fi
        return
      fi
      if [ "${#DOCKER_E2E_RUN_RESOURCE_ARGS[@]}" -gt 0 ]; then
        set -- run "${DOCKER_E2E_RUN_RESOURCE_ARGS[@]}" "$@"
      else
        set -- run "$@"
      fi
    fi
    if declare -F docker_e2e_timeout_cmd >/dev/null 2>&1; then
      docker_e2e_timeout_cmd "${DOCKER_COMMAND_TIMEOUT:-${OPENCLAW_DOCKER_E2E_RUN_TIMEOUT:-3600s}}" docker "$@"
      return
    fi
    local timeout_value="${DOCKER_COMMAND_TIMEOUT:-${OPENCLAW_DOCKER_E2E_RUN_TIMEOUT:-3600s}}"
    local timeout_bin=""
    if command -v timeout >/dev/null 2>&1; then
      timeout_bin="timeout"
    elif command -v gtimeout >/dev/null 2>&1; then
      timeout_bin="gtimeout"
    fi
    if [ -n "$timeout_bin" ]; then
      if "$timeout_bin" --kill-after=1s 1s true >/dev/null 2>&1; then
        "$timeout_bin" --kill-after=30s "$timeout_value" docker "$@"
      else
        "$timeout_bin" "$timeout_value" docker "$@"
      fi
      return
    fi
    echo "timeout command not found; cannot bound Docker run after ${timeout_value}" >&2
    return 127
  }
fi

docker_e2e_abs_path() {
  local file="$1"
  (cd "$(dirname "$file")" && printf '%s/%s\n' "$(pwd)" "$(basename "$file")")
}

docker_e2e_prepare_package_tgz() {
  local label="$1"
  local package_tgz="${2:-${OPENCLAW_CURRENT_PACKAGE_TGZ:-}}"

  if [ -n "$package_tgz" ]; then
    if [ ! -f "$package_tgz" ]; then
      echo "OpenClaw package tarball does not exist: $package_tgz" >&2
      return 1
    fi
    docker_e2e_abs_path "$package_tgz"
    return 0
  fi

  local pack_dir
  pack_dir="$(mktemp -d "${TMPDIR:-/tmp}/openclaw-docker-e2e-pack.XXXXXX")"
  local pack_status=0
  package_tgz="$(
    node "$ROOT_DIR/scripts/package-openclaw-for-docker.mjs" \
      --output-dir "$pack_dir" \
      --output-name openclaw-current.tgz
  )" || pack_status="$?"
  if [ "$pack_status" -ne 0 ]; then
    rm -rf "$pack_dir"
    return "$pack_status"
  fi
  if [ -z "$package_tgz" ]; then
    echo "missing packed OpenClaw tarball" >&2
    rm -rf "$pack_dir"
    return 1
  fi
  touch "$pack_dir/.openclaw-docker-e2e-generated-package"
  docker_e2e_abs_path "$package_tgz"
}

docker_e2e_prepare_package_context() {
  local package_tgz="$1"
  local context_dir
  context_dir="$(mktemp -d "${TMPDIR:-/tmp}/openclaw-docker-e2e-package-context.XXXXXX")"
  # BuildKit named contexts must be directories, so expose the tarball as a
  # stable filename inside a tiny temporary context.
  local copy_status=0
  cp "$package_tgz" "$context_dir/openclaw-current.tgz" || copy_status="$?"
  if [ "$copy_status" -ne 0 ]; then
    rm -rf "$context_dir"
    return "$copy_status"
  fi
  printf '%s\n' "$context_dir"
}

docker_e2e_package_mount_args() {
  local package_tgz="$1"
  local target="${2:-/tmp/openclaw-current.tgz}"
  DOCKER_E2E_PACKAGE_ARGS=(-v "$package_tgz:$target:ro" -e "OPENCLAW_CURRENT_PACKAGE_TGZ=$target")
  if [ -n "${OPENCLAW_E2E_NPM_INSTALL_TIMEOUT:-}" ]; then
    DOCKER_E2E_PACKAGE_ARGS+=(-e "OPENCLAW_E2E_NPM_INSTALL_TIMEOUT=$OPENCLAW_E2E_NPM_INSTALL_TIMEOUT")
  fi
  if [ -n "${OPENCLAW_E2E_COMMAND_TIMEOUT:-}" ]; then
    DOCKER_E2E_PACKAGE_ARGS+=(-e "OPENCLAW_E2E_COMMAND_TIMEOUT=$OPENCLAW_E2E_COMMAND_TIMEOUT")
  fi
}

docker_e2e_cleanup_package_tgz() {
  local package_tgz="${1:-}"
  [ -n "$package_tgz" ] || return 0
  [ "$(basename "$package_tgz")" = "openclaw-current.tgz" ] || return 0

  local pack_dir
  pack_dir="$(dirname "$package_tgz")"
  if [ -f "$pack_dir/.openclaw-docker-e2e-generated-package" ]; then
    rm -rf "$pack_dir"
  fi
}

docker_e2e_cleanup_package_mount_args() {
  local expect_volume_path=0
  local arg
  for arg in "${DOCKER_E2E_PACKAGE_ARGS[@]:-}"; do
    if [ "$expect_volume_path" = "1" ]; then
      docker_e2e_cleanup_package_tgz "${arg%%:*}"
      expect_volume_path=0
      continue
    fi
    if [ "$arg" = "-v" ]; then
      expect_volume_path=1
    fi
  done
}

docker_e2e_cleanup_container_cidfile() {
  local cidfile="${1:-}"
  [ -n "$cidfile" ] || return 0
  if [ -f "$cidfile" ]; then
    local container_id
    container_id="$(head -n 1 "$cidfile" 2>/dev/null || true)"
    if [ -n "$container_id" ]; then
      docker_e2e_docker_cmd rm -f "$container_id" >/dev/null 2>&1 || true
    fi
    rm -f "$cidfile"
  fi
}

docker_e2e_harness_mount_args() {
  DOCKER_E2E_HARNESS_ARGS=(
    -v "$ROOT_DIR/scripts/e2e:/app/scripts/e2e:ro"
    -v "$ROOT_DIR/scripts/lib:/app/scripts/lib:ro"
    -v "$ROOT_DIR/scripts/windows-cmd-helpers.mjs:/app/scripts/windows-cmd-helpers.mjs:ro"
  )
}

docker_e2e_run_with_harness() {
  docker_e2e_harness_mount_args
  local run_status=0
  local cid_dir
  local cidfile
  local docker_run_pid=""
  local harness_stdin_fd=""
  local cleanup_done=0
  local previous_int_trap
  local previous_term_trap
  local previous_hup_trap
  cid_dir="$(mktemp -d "${TMPDIR:-/tmp}/openclaw-docker-e2e-container.XXXXXX")"
  cidfile="$cid_dir/container.cid"
  previous_int_trap="$(trap -p INT || true)"
  previous_term_trap="$(trap -p TERM || true)"
  previous_hup_trap="$(trap -p HUP || true)"
  restore_harness_traps() {
    if [ -n "$previous_int_trap" ]; then
      eval "$previous_int_trap"
    else
      trap - INT
    fi
    if [ -n "$previous_term_trap" ]; then
      eval "$previous_term_trap"
    else
      trap - TERM
    fi
    if [ -n "$previous_hup_trap" ]; then
      eval "$previous_hup_trap"
    else
      trap - HUP
    fi
  }
  docker_e2e_harness_descendant_pids() {
    local parent_pid="$1"
    local child_pid
    for child_pid in $(pgrep -P "$parent_pid" 2>/dev/null || true); do
      docker_e2e_harness_descendant_pids "$child_pid"
      printf '%s\n' "$child_pid"
    done
  }
  terminate_harness_docker_run() {
    [ -n "$docker_run_pid" ] || return 0
    kill -0 "$docker_run_pid" 2>/dev/null || return 0
    local descendant_pids
    descendant_pids="$(docker_e2e_harness_descendant_pids "$docker_run_pid")"
    if [ -n "$descendant_pids" ]; then
      kill -TERM $descendant_pids 2>/dev/null || true
    fi
    kill -TERM "$docker_run_pid" 2>/dev/null || true
    local grace_seconds="${OPENCLAW_DOCKER_E2E_CONTAINER_TERM_GRACE_SECONDS:-10}"
    if ! [[ "$grace_seconds" =~ ^[0-9]+$ ]] || [ "$grace_seconds" -lt 1 ]; then
      grace_seconds="10"
    else
      grace_seconds="$((10#$grace_seconds))"
    fi
    local wait_attempt
    for wait_attempt in $(seq 1 "$((grace_seconds * 10))"); do
      if ! kill -0 "$docker_run_pid" 2>/dev/null; then
        return 0
      fi
      /bin/sleep 0.1
    done
    descendant_pids="$(docker_e2e_harness_descendant_pids "$docker_run_pid")"
    if [ -n "$descendant_pids" ]; then
      kill -KILL $descendant_pids 2>/dev/null || true
    fi
    kill -KILL "$docker_run_pid" 2>/dev/null || true
  }
  cleanup_harness_run() {
    local cleanup_status="${1:-$?}"
    local exit_after_cleanup="${2:-0}"
    if [ "$cleanup_done" = "1" ]; then
      if [ "$exit_after_cleanup" = "1" ]; then
        exit "$cleanup_status"
      fi
      return "$cleanup_status"
    fi
    cleanup_done=1
    trap - INT TERM HUP
    terminate_harness_docker_run
    wait "$docker_run_pid" 2>/dev/null || true
    docker_e2e_cleanup_container_cidfile "$cidfile"
    rmdir "$cid_dir" 2>/dev/null || true
    docker_e2e_cleanup_package_mount_args
    if [ -n "$harness_stdin_fd" ]; then
      eval "exec ${harness_stdin_fd}<&-"
    fi
    restore_harness_traps
    if [ "$exit_after_cleanup" = "1" ]; then
      exit "$cleanup_status"
    fi
    return "$cleanup_status"
  }
  trap 'cleanup_harness_run 130 1' INT
  trap 'cleanup_harness_run 143 1' TERM
  trap 'cleanup_harness_run 129 1' HUP
  local candidate_fd
  for candidate_fd in 19 18 17 16 15 14 13 12 11 10; do
    if ! eval "true <&${candidate_fd}" 2>/dev/null; then
      harness_stdin_fd="$candidate_fd"
      break
    fi
  done
  if [ -z "$harness_stdin_fd" ]; then
    echo "no free file descriptor available for Docker harness stdin" >&2
    cleanup_harness_run 1
    return 1
  fi
  eval "exec ${harness_stdin_fd}<&0"
  docker_e2e_docker_run_cmd run --rm --cidfile "$cidfile" "${DOCKER_E2E_HARNESS_ARGS[@]}" "$@" <&$harness_stdin_fd &
  docker_run_pid="$!"
  local had_errexit=0
  case "$-" in
    *e*)
      had_errexit=1
      ;;
  esac
  set +e
  wait "$docker_run_pid"
  run_status="$?"
  if [ "$had_errexit" = "1" ]; then
    set -e
  fi
  cleanup_harness_run 0
  return "$run_status"
}

docker_e2e_run_detached_with_harness() {
  docker_e2e_harness_mount_args
  docker_e2e_docker_cmd run -d "${DOCKER_E2E_HARNESS_ARGS[@]}" "$@"
}

docker_e2e_run_logged_with_harness() {
  local label="$1"
  shift
  run_logged "$label" docker_e2e_run_with_harness "$@"
}

docker_e2e_run_logged_print_with_harness() {
  local label="$1"
  shift
  run_logged_print_heartbeat \
    "$label" \
    "${OPENCLAW_DOCKER_E2E_LOG_HEARTBEAT_SECONDS:-30}" \
    docker_e2e_run_with_harness \
    "$@"
}
