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

DOCKER_REGISTRY="gitea.oskamp.info"
DOCKER_NAMESPACE="ivooskamp"
VERSION_FILE="version.txt"
START_VERSION="v0.1.0"
CONTAINERS_DIR="containers"

BUMP="${1:-t}"
if [[ "$BUMP" != "1" && "$BUMP" != "2" && "$BUMP" != "3" && "$BUMP" != "t" ]]; then
  echo "[ERROR] Unknown bump type '$BUMP' (use 1, 2, 3, or t)."
  exit 1
fi

read_version() {
  if [[ -f "$VERSION_FILE" ]]; then
    tr -d ' \t\n\r' < "$VERSION_FILE"
  else
    echo "$START_VERSION"
  fi
}

bump_version() {
  local cur="$1"
  local kind="$2"
  local core="${cur#v}"
  IFS='.' read -r MA MI PA <<< "$core"
  case "$kind" in
    1) PA=$((PA + 1));;
    2) MI=$((MI + 1)); PA=0;;
    3) MA=$((MA + 1)); MI=0; PA=0;;
  esac
  echo "v${MA}.${MI}.${PA}"
}

if ! docker info >/dev/null 2>&1; then
  echo "[ERROR] Docker daemon not reachable."
  exit 1
fi

if [[ ! -d "$CONTAINERS_DIR" ]]; then
  echo "[ERROR] '$CONTAINERS_DIR' directory missing."
  exit 1
fi

CURRENT_VERSION="$(read_version)"
NEW_VERSION="$CURRENT_VERSION"
RELEASE=false

if [[ "$BUMP" != "t" ]]; then
  NEW_VERSION="$(bump_version "$CURRENT_VERSION" "$BUMP")"
  RELEASE=true
  echo "$NEW_VERSION" > "$VERSION_FILE"
  git add "$VERSION_FILE"
  git commit -m "Release $NEW_VERSION"
  git tag -a "$NEW_VERSION" -m "Release $NEW_VERSION"
  git push --follow-tags
fi

for svc_path in "$CONTAINERS_DIR"/*; do
  [[ -d "$svc_path" ]] || continue
  svc="$(basename "$svc_path")"
  dockerfile="$svc_path/Dockerfile"

  if [[ ! -f "$dockerfile" ]]; then
    echo "[WARNING] Skipping $svc: Dockerfile missing"
    continue
  fi

  IMAGE_BASE="${DOCKER_REGISTRY}/${DOCKER_NAMESPACE}/${svc}"

  if $RELEASE; then
    docker build -t "${IMAGE_BASE}:${NEW_VERSION}" -t "${IMAGE_BASE}:dev" "$svc_path"
    docker push "${IMAGE_BASE}:${NEW_VERSION}"
    docker push "${IMAGE_BASE}:dev"
  else
    docker build -t "${IMAGE_BASE}:dev" "$svc_path"
    docker push "${IMAGE_BASE}:dev"
  fi

done

echo "[DONE] Build/push complete"