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

# Usage: ./update-swagger-ui.sh [version]
# Example: ./update-swagger-ui.sh v5.17.14
# If no version is provided, defaults below is used.
VERSION="${1:-v5.29.5}"

TARGET_DIR="server/router/swagger-ui-dist"
TARBALL_URL="https://github.com/swagger-api/swagger-ui/archive/refs/tags/${VERSION}.tar.gz"

echo ">> Fetching Swagger UI ${VERSION} …"
tmpdir="$(mktemp -d)"
cleanup() { rm -rf "$tmpdir"; }
trap cleanup EXIT

# Requirements check
for cmd in curl tar; do
  command -v "$cmd" >/dev/null 2>&1 || { echo "ERROR: $cmd not found"; exit 1; }
done

# Download & unpack
curl -fsSL "$TARBALL_URL" | tar -xz -C "$tmpdir"
SRC_DIR="${tmpdir}/swagger-ui-${VERSION#v}/dist"
if [[ ! -d "$SRC_DIR" ]]; then
  echo "ERROR: Unpacked dist not found at $SRC_DIR"
  exit 1
fi

# Replace target
rm -rf "$TARGET_DIR"
mkdir -p "$TARGET_DIR"
# Use cp -a for portability (avoids rsync dependency)
cp -a "${SRC_DIR}/." "$TARGET_DIR/"

INDEX="${TARGET_DIR}/swagger-initializer.js"
if [[ ! -f "$INDEX" ]]; then
  echo "ERROR: ${INDEX} not found after copy"
  exit 1
fi

echo ">> Patching swagger-initializer.js to point at /swagger.json"

sed -i -E \
  -e 's#configUrl:[[:space:]]*["'\''"][^"'\''"]*["'\''"]#url: "/swagger.json"#' \
  -e 's#url:[[:space:]]*["'\''"][^"'\''"]*["'\''"]#url: "/swagger.json"#' \
  -e 's#urls:[[:space:]]*\[[^]]*\]#url: "/swagger.json"#' \
  -e '/url:[[:space:]]*"[^\"]*swagger\.json"[[:space:]]*,?$/a\    validatorUrl: null,' \
  "$INDEX"

echo ">> Done. Files are in ${TARGET_DIR}"