#!/usr/bin/env bash

delete_package_version() {
  local endpoint=$1 tag=$2 digest=$3 attempt versions version_id
  local retries=${RELEASE_RETRY_COUNT:-5} delay=${RELEASE_RETRY_DELAY:-2}

  for ((attempt = 1; attempt <= retries; attempt++)); do
    if versions=$(gh api --paginate --slurp "$endpoint?per_page=100") &&
      version_id=$(jq -er --arg tag "$tag" --arg digest "$digest" \
        '[.[][] | select(.name == $digest and ((.metadata.container.tags // []) | index($tag)))] | if length == 1 then .[0].id else empty end' \
        <<< "$versions") &&
      [[ $version_id =~ ^[0-9]+$ ]] &&
      gh api --method DELETE "$endpoint/$version_id"; then
      return 0
    fi
    ((attempt == retries)) || sleep "$delay"
  done

  echo "Could not delete package version for $tag at $digest" >&2
  return 1
}

wait_for_tag_absent() {
  local target=$1 attempt output
  local retries=${RELEASE_RETRY_COUNT:-5} delay=${RELEASE_RETRY_DELAY:-2}

  for ((attempt = 1; attempt <= retries; attempt++)); do
    if output=$(crane digest "$target" 2>&1); then
      :
    elif grep -Eiq 'MANIFEST_UNKNOWN|manifest unknown|not found|404' <<< "$output"; then
      return 0
    fi
    ((attempt == retries)) || sleep "$delay"
  done

  [[ -z $output ]] || printf '%s\n' "$output" >&2
  echo "Tag still resolves after cleanup: $target" >&2
  return 1
}