#!/bin/sh
set -eu

# Applies an S3 lifecycle configuration to the docs bucket.
#
# This is an operator tool (it has side effects). It is still automatable and scriptable.
#
# Required env:
# - S3_ENDPOINT
# - S3_REGION
# - S3_BUCKET_DOCS
#
# Optional env:
# - S3_LIFECYCLE_JSON (path to JSON file; default: docs/usage/s3_lifecycle_docs_default.json)
#
# Usage:
#   export S3_ENDPOINT=...
#   export S3_REGION=...
#   export S3_BUCKET_DOCS=...
#   sh docker/scripts/s3_apply_lifecycle_docs.sh

need() {
  name="$1"
  val="$(printenv "$name" 2>/dev/null || true)"
  if [ -z "$val" ]; then
    echo "missing env: $name" >&2
    exit 2
  fi
}

need S3_ENDPOINT
need S3_REGION
need S3_BUCKET_DOCS

if ! command -v aws >/dev/null 2>&1; then
  echo "missing dependency: aws (AWS CLI v2 recommended)" >&2
  exit 2
fi

export AWS_EC2_METADATA_DISABLED=true
export AWS_DEFAULT_REGION="$S3_REGION"
export AWS_REGION="$S3_REGION"

S3_LIFECYCLE_JSON="${S3_LIFECYCLE_JSON:-docs/usage/s3_lifecycle_docs_default.json}"
if [ ! -f "$S3_LIFECYCLE_JSON" ]; then
  echo "missing lifecycle config file: $S3_LIFECYCLE_JSON" >&2
  exit 2
fi

aws s3api put-bucket-lifecycle-configuration \
  --endpoint-url "$S3_ENDPOINT" \
  --bucket "$S3_BUCKET_DOCS" \
  --lifecycle-configuration "file://$S3_LIFECYCLE_JSON" >/dev/null

echo "ok: applied lifecycle config to bucket $S3_BUCKET_DOCS"