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

TABLE="${1:-lake.db1.messages}"
DEDUPE_MODE="${2:-none}"
PAYLOAD_B64="${3:-}"

if [[ -z "$PAYLOAD_B64" ]]; then
  echo "Usage: $0 <table> <dedupe_mode:none|message_id|thread_message> <payload_b64_json_array|@/path/to/payload.json>" >&2
  exit 1
fi

if [[ "$DEDUPE_MODE" != "none" && "$DEDUPE_MODE" != "message_id" && "$DEDUPE_MODE" != "thread_message" ]]; then
  echo "Invalid dedupe_mode: $DEDUPE_MODE (expected none|message_id|thread_message)" >&2
  exit 1
fi

CONTAINER_NAME="${SPARK_CONTAINER_NAME:-spark}"
SPARK_PROPS="${SPARK_PROPS:-/opt/lakehouse/spark-conf/lakehouse-spark-defaults.conf}"
PACKAGES="${SPARK_PACKAGES:-org.apache.iceberg:iceberg-spark-runtime-3.5_2.12:1.10.1,org.apache.iceberg:iceberg-aws-bundle:1.10.1,org.projectnessie.nessie-integrations:nessie-spark-extensions-3.5_2.12:0.104.5}"

SCRIPT_LOCAL="${SCRIPT_LOCAL:-./ingest_messages_batch.py}"
SCRIPT_REMOTE="/tmp/ingest_messages_batch.py"

if [[ ! -f "$SCRIPT_LOCAL" ]]; then
  echo "ingest_messages_batch.py not found at: $SCRIPT_LOCAL" >&2
  exit 1
fi

docker cp "$SCRIPT_LOCAL" "$CONTAINER_NAME":"$SCRIPT_REMOTE"

SPARK_ARGS=(
  --table "$TABLE"
  --dedupe-mode "$DEDUPE_MODE"
)

if [[ "${PAYLOAD_B64:0:1}" == "@" ]]; then
  PAYLOAD_FILE_HOST="${PAYLOAD_B64:1}"
  if [[ ! -f "$PAYLOAD_FILE_HOST" ]]; then
    echo "Payload file not found: $PAYLOAD_FILE_HOST" >&2
    exit 1
  fi
  PAYLOAD_FILE_REMOTE="/opt/spark/work-dir/ingest_messages_payload.json"
  docker cp "$PAYLOAD_FILE_HOST" "$CONTAINER_NAME":"$PAYLOAD_FILE_REMOTE"
  # Ensure spark user can read the file regardless of ownership from docker cp.
  docker exec -u 0 "$CONTAINER_NAME" /bin/sh -lc "chmod 644 '$PAYLOAD_FILE_REMOTE' || true"
  SPARK_ARGS+=(--payload-file "$PAYLOAD_FILE_REMOTE")
else
  SPARK_ARGS+=(--payload-b64 "$PAYLOAD_B64")
fi

docker exec \
  -e AWS_REGION="${AWS_REGION:-us-east-1}" \
  -e AWS_DEFAULT_REGION="${AWS_DEFAULT_REGION:-us-east-1}" \
  "$CONTAINER_NAME" \
  /opt/spark/bin/spark-submit \
    --properties-file "$SPARK_PROPS" \
    --packages "$PACKAGES" \
    "$SCRIPT_REMOTE" \
      "${SPARK_ARGS[@]}"