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

trap 'echo "Error on line $LINENO while creating ops bundle" >&2' ERR

ensure_writable_dir() {
  local dir="$1"
  mkdir -p "$dir"
  if [[ ! -d "$dir" || ! -w "$dir" ]]; then
    echo "Output directory is not writable: $dir" >&2
    exit 1
  fi
}

OPS_REPO_PATH="${OPS_REPO_PATH:-/srv/ops}"
OUT_BASE="${OUT_BASE:-/srv/backups/ops}"
TS="$(date +%F_%H%M%S)"
OUT_DIR="$OUT_BASE/$TS"
LATEST_DIR="$OUT_BASE/latest"
artifact="$OUT_DIR/ops.bundle"
latest_artifact="$LATEST_DIR/ops.bundle"

if [[ ! -d "$OPS_REPO_PATH/.git" ]]; then
  echo "Missing git repo at $OPS_REPO_PATH"
  exit 1
fi

ensure_writable_dir "$OUT_DIR"
git -C "$OPS_REPO_PATH" bundle create "$artifact" --all

ensure_writable_dir "$LATEST_DIR"
cp "$artifact" "$latest_artifact"

if [[ ! -s "$artifact" || ! -s "$latest_artifact" ]]; then
  echo "Bundle artifact missing or empty" >&2
  exit 1
fi

echo "Wrote bundle: $artifact"
echo "Updated latest: $latest_artifact"