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

: "${SPANNER_PROJECT:?}"
: "${SPANNER_INSTANCE:?}"
: "${SPANNER_DATABASE:?}"

# 1) Wait for emulator gRPC port (inside compose network it's "spanner:9010")
for _ in $(seq 1 60); do
  (echo >/dev/tcp/spanner/9010) >/dev/null 2>&1 && break
  sleep 1
done

# 2) Point gcloud to the emulator (disable real IAM)
export SPANNER_EMULATOR_HOST=spanner:9010
gcloud config set auth/disable_credentials true >/dev/null
gcloud config set core/project "${SPANNER_PROJECT}" >/dev/null
gcloud config set api_endpoint_overrides/spanner http://spanner:9020/ >/dev/null

# 3) Create instance & database (idempotent)
gcloud spanner instances create "${SPANNER_INSTANCE}" \
  --config=emulator-config --nodes=1 --description="Dev" >/dev/null 2>&1 || true

gcloud spanner databases create "${SPANNER_DATABASE}" \
  --instance="${SPANNER_INSTANCE}" >/dev/null 2>&1 || true

# 4) Apply DDL
gcloud spanner databases ddl update "${SPANNER_DATABASE}" \
  --instance="${SPANNER_INSTANCE}" \
  --ddl-file="/work/ddl/schema.sql" >/dev/null