#!/bin/bash

# Shared helpers for compose volume operations.
# Ephemeral volumes (init-container config) are excluded from backup/restore/size.

is_ephemeral_volume_key() {
  local key=$1
  local compose_file=$2

  # op-node rollup config volumes
  [[ "$key" == *_node_config ]] && return 0

  if [[ -n "$compose_file" && -f "$compose_file" ]]; then
    local ephemeral
    ephemeral=$(yaml2json "$compose_file" 2>/dev/null | jq -r '.["x-ephemeral-volumes"] // [] | .[]' 2>/dev/null)
    while IFS= read -r vol; do
      [[ -z "$vol" ]] && continue
      [[ "$key" == "$vol" ]] && return 0
    done <<< "$ephemeral"
  fi

  return 1
}

get_volume_keys() {
  local compose_file=$1
  yaml2json "$compose_file" 2>/dev/null | jq -r '.volumes | keys[]' 2>/dev/null
}

get_persistent_volume_keys() {
  local compose_file=$1
  local key

  while IFS= read -r key; do
    [[ -z "$key" ]] && continue
    if ! is_ephemeral_volume_key "$key" "$compose_file"; then
      echo "$key"
    fi
  done < <(get_volume_keys "$compose_file")
}