#!/usr/bin/env bash
#
# Populate the external named *config* volumes that the upstream services mount,
# by `docker cp`-ing files into a throwaway helper container that mounts each one.
#
# Why: the compose stack uses the upstream images verbatim (no build). On Gitea's
# containerized runner, `docker compose` starts the stack as SIBLING containers
# via the host daemon, so a workspace bind mount resolves to a path the daemon
# can't see and is mounted empty. `docker cp` instead streams bytes over the
# Docker API, so the files reach the volume regardless of where the daemon runs.
# We use plain docker primitives (volume create / run / cp / rm) rather than
# `docker compose create`, because podman-compose (local dev) lacks that
# subcommand. Fixed-name `external` volumes keep the names deterministic across
# both runtimes. See docs/runbooks/gitea-actions-gotchas.md.
#
# Usage: seed-config.sh <key> [<key> ...]   where key ∈ { oz, kc, fl }
set -euo pipefail

here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
HELPER="${SEED_HELPER_IMAGE:-docker.io/library/busybox:stable}"

populate() {  # volume  source(file or dir/.)
  local vol="$1" src="$2" cid
  docker volume rm -f "$vol" >/dev/null 2>&1 || true
  docker volume create "$vol" >/dev/null
  # A *created* (never started) helper is enough: the volume is attached at create
  # time, `docker cp` writes through to it, and `docker rm` is instant (nothing to
  # stop). `docker create` is a container subcommand both docker and podman have —
  # unlike `docker compose create`, which podman-compose lacks.
  cid="$(docker create -v "$vol:/dest" "$HELPER" true)"
  docker cp "$src" "$cid:/dest/"
  docker rm "$cid" >/dev/null
  echo "  seeded $vol"
}

[ "$#" -gt 0 ] || { echo "usage: seed-config.sh <oz|kc|fl> ..." >&2; exit 2; }

for key in "$@"; do
  case "$key" in
    oz) populate rr-oz-config "$here/openzaak/setup_configuration/." ;;
    kc) populate rr-kc-realms "$here/keycloak/realms/." ;;
    fl) populate rr-fl-bpmn  "$here/../workflows/registratie.bpmn" ;;
    *)  echo "unknown seed key: $key" >&2; exit 2 ;;
  esac
done