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

SSH_ARGS=(
  -i ~/.ssh/naeel_vm_id_ed25519
  -o StrictHostKeyChecking=no
  -o ConnectTimeout=10
  naeel@5.172.178.213
)

kube_exec() {
  if [ "${KUBECTL_DIRECT:-0}" = "1" ]; then
    kubectl "$@"
  else
    ssh "${SSH_ARGS[@]}" "kubectl $*"
  fi
}

namespace_for_sub() {
  printf '%s' "$1" | sha256sum | awk '{print "fission-" substr($1, 1, 16)}'
}

delete_ns() {
  local ns="$1"
  [ -n "$ns" ] || return 0
  if [ "${KUBECTL_DIRECT:-0}" = "1" ]; then
    kubectl delete namespace "$ns" --wait=false >/dev/null 2>&1 || true
  else
    ssh "${SSH_ARGS[@]}" "kubectl delete namespace ${ns} --wait=false >/dev/null 2>&1 || true"
  fi
  echo "cleanup namespace: ${ns}"
}

delete_all_console_managed() {
  local ns_list
  if [ "${KUBECTL_DIRECT:-0}" = "1" ]; then
    ns_list=$(kubectl get ns -l managed-by=fission-console -o jsonpath='{range .items[*]}{.metadata.name}{"\n"}{end}' 2>/dev/null || true)
  else
    ns_list=$(ssh "${SSH_ARGS[@]}" '
set -e
kubectl get ns -l managed-by=fission-console -o jsonpath="{range .items[*]}{.metadata.name}{"\n"}{end}" 2>/dev/null || true
' )
  fi
  printf '%s\n' "$ns_list" | while IFS= read -r ns; do
    [ -n "$ns" ] || continue
    delete_ns "$ns"
  done
}

if [ "$#" -eq 0 ]; then
  echo "usage: $0 SUB [SUB ...] | --all-console-managed" >&2
  exit 1
fi

if [ "$1" = "--all-console-managed" ]; then
  delete_all_console_managed
  exit 0
fi

printf '%s\n' "$@" | awk 'NF && !seen[$0]++' | while IFS= read -r sub; do
  delete_ns "$(namespace_for_sub "$sub")"
done