#!/usr/bin/env bash
set -euo pipefail
IFS=$'\n\t'

REGISTRY=${REGISTRY:-git.4nkweb.com}
NAMESPACE=${NAMESPACE:-4nk}
# Support d'un paramètre positionnel prioritaire pour le tag
if [ "${1:-}" != "" ]; then
  DOCKER_TAG="$1"
fi
if [ -z "${DOCKER_TAG:-}" ]; then
  echo "[docker][erreur] DOCKER_TAG non défini (obligatoire). Fournissez-le en argument ou via l'environnement." >&2
  exit 1
fi

# Normalisation du tag pour Docker (sécurité côté script)
DOCKER_TAG=${DOCKER_TAG##*/}
DOCKER_TAG=$(printf "%s" "$DOCKER_TAG" | tr '[:upper:]' '[:lower:]' | sed 's/[^a-z0-9_.-]/-/g')

echo "[docker] registry=${REGISTRY} namespace=${NAMESPACE} tag=${DOCKER_TAG}"

if ! command -v docker >/dev/null 2>&1; then
  echo "[docker][erreur] docker introuvable" >&2
  exit 1
fi

if [ ! -f .gitmodules ]; then
  echo "[docker][erreur] .gitmodules introuvable dans $(pwd)" >&2
  exit 1
fi

# Prépare le répertoire de logs
LOG_DIR="log/ci/${DOCKER_TAG}"
mkdir -p "${LOG_DIR}"
SUMMARY_FILE="${LOG_DIR}/summary.txt"
: > "${SUMMARY_FILE}"

# Parcourt les submodules déclarés
mapfile -t submodules < <(git config -f .gitmodules --name-only --get-regexp 'submodule\..*\.path' | sed -E 's/\.path$//')

for name in "${submodules[@]}"; do
  path=$(git config -f .gitmodules --get "${name}.path" || true)
  url=$(git config -f .gitmodules --get "${name}.url" || true)
  branch=$(git config -f .gitmodules --get "${name}.branch" || echo "master")

  if [ -z "${path}" ] || [ -z "${url}" ]; then
    echo "[docker][warn] entrée incomplète pour ${name}, ignoré" >&2
    continue
  fi

  image_name=$(basename "${path}")
  image_name_lc=$(printf "%s" "${image_name}" | tr '[:upper:]' '[:lower:]')
  full_ref="${REGISTRY}/${NAMESPACE}/${image_name_lc}:${DOCKER_TAG}"

  if [ ! -d "${path}" ]; then
    echo "[docker][warn] sous-dossier ${path} manquant, on saute" >&2
    continue
  fi

  mapfile -t dockerfiles < <(find "${path}" -type f -name Dockerfile | sort)
  if [ ${#dockerfiles[@]} -eq 0 ]; then
    echo "[docker] aucun Dockerfile dans ${path}, ignoré"
    echo "skip $(basename \"${path}\")" >> "${SUMMARY_FILE}"
    continue
  fi

  for df in "${dockerfiles[@]}"; do
    df_dir=$(dirname "${df}")
    rel_dir=${df_dir#${path}/}
    if [ "${rel_dir}" = "${df_dir}" ]; then rel_dir=""; fi
    suffix=""
    if [ -n "${rel_dir}" ]; then
      suffix="-$(echo "${rel_dir}" | tr '[:upper:]' '[:lower:]' | tr '/' '-')"
    fi
    image_name_variant="${image_name_lc}${suffix}"
    full_ref_variant="${REGISTRY}/${NAMESPACE}/${image_name_variant}:${DOCKER_TAG}"

    log_file="${LOG_DIR}/${image_name_variant}.log"
    echo "[docker] build ${full_ref_variant} depuis ${df_dir} (branche ${branch}) | log: ${log_file}"
    {
      echo "== BUILD+PUSH ${full_ref_variant} =="
      echo "context=${df_dir} dockerfile=${df}"
      date -Is
      docker buildx build \
        --pull \
        --ssh default \
        --progress=plain \
        --file "${df}" \
        --tag "${full_ref_variant}" \
        --push \
        "${df_dir}"
    } 2>&1 | tee -a "${log_file}"

    echo "${full_ref_variant} ${log_file}" >> "${SUMMARY_FILE}"
  done
done

echo "[docker] terminé"
echo "[docker] récapitulatif: ${SUMMARY_FILE}"