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

root_dir="$(cd -- "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
config="$root_dir/go/config.yaml"
spec="${STELLA_OAS_FILE:-}"

if [ -z "$spec" ]; then
  echo "STELLA_OAS_FILE is required (path to OpenAPI spec)" >&2
  exit 1
fi

output_dir="${STELLA_SDK_OUT:-$root_dir/out/go}"
mkdir -p "$output_dir"

# Ensure postprocess copies shared helpers into the generated tree
export STELLA_POSTPROCESS_ROOT="$output_dir"
export STELLA_POSTPROCESS_LANG="go"

JAR="${STELLA_OPENAPI_GENERATOR_JAR:-$root_dir/tools/openapi-generator-cli-7.4.0.jar}"
if [ ! -f "$JAR" ]; then
  echo "OpenAPI Generator CLI jar not found at $JAR" >&2
  echo "Set STELLA_OPENAPI_GENERATOR_JAR or download to tools/." >&2
  exit 1
fi

JAVA_OPTS="${JAVA_OPTS:-} -Dorg.openapitools.codegen.utils.postProcessFile=$root_dir/postprocess/postprocess.sh"
export JAVA_OPTS

java -jar "$JAR" generate \
  -i "$spec" \
  -g go \
  -c "$config" \
  --skip-validate-spec \
  --enable-post-process-file \
  --global-property models,apis,supportingFiles \
  -o "$output_dir"

# Ensure shared helpers are present even if upstream post-process hooks were skipped for some files
if [ -d "$output_dir" ]; then
  "$root_dir/postprocess/postprocess.sh" "$output_dir/client.go" 2>/dev/null || true
fi

echo "Go SDK generated at $output_dir"