#!/usr/bin/env bash
# Ensure rusty_v8 static library is cached for Goose code-mode builds.
set -euo pipefail

ARCH="$(uname -m)"
OS="$(uname -s | tr '[:upper:]' '[:lower:]')"
if [[ "${ARCH}" != "arm64" || "${OS}" != "darwin" ]]; then
  echo "[goose-v149-v8] unsupported platform ${OS}/${ARCH}; download manually if needed" >&2
  exit 0
fi

V8_VERSION="v145.0.0"
FILE="librusty_v8_release_aarch64-apple-darwin.a.gz"
URL="https://github.com/denoland/rusty_v8/releases/download/${V8_VERSION}/${FILE}"
# rusty_v8 build.rs expects the escaped URL path to be a FILE, not a directory.
CACHE_FILE="${HOME}/.cargo/.rusty_v8/https___github_com_denoland_rusty_v8_releases_download_v145_0_0_librusty_v8_release_aarch64_apple_darwin_a_gz"
MIN_BYTES=$((30 * 1024 * 1024))

mkdir -p "$(dirname "${CACHE_FILE}")"

# Legacy layout stored the gzip inside a same-named directory — migrate once.
if [[ -d "${CACHE_FILE}" ]]; then
  legacy="${CACHE_FILE}/${FILE}"
  if [[ -f "${legacy}" ]]; then
    mv "${legacy}" "${CACHE_FILE}.migrate"
    rmdir "${CACHE_FILE}"
    mv "${CACHE_FILE}.migrate" "${CACHE_FILE}"
    echo "[goose-v149-v8] migrated legacy directory cache -> file"
  else
    echo "[goose-v149-v8] legacy cache dir is empty: ${CACHE_FILE}" >&2
    rm -rf "${CACHE_FILE}"
  fi
fi

if [[ -f "${CACHE_FILE}" ]]; then
  size="$(wc -c < "${CACHE_FILE}" | tr -d ' ')"
  if [[ "${size}" -ge "${MIN_BYTES}" ]]; then
    echo "[goose-v149-v8] cache ok (${size} bytes): ${CACHE_FILE}"
    exit 0
  fi
  echo "[goose-v149-v8] cache too small (${size} bytes), re-downloading" >&2
  rm -f "${CACHE_FILE}"
fi

echo "[goose-v149-v8] downloading ${URL}"
curl -fL --retry 5 --retry-delay 2 -o "${CACHE_FILE}.partial" "${URL}"
mv "${CACHE_FILE}.partial" "${CACHE_FILE}"
size="$(wc -c < "${CACHE_FILE}" | tr -d ' ')"
echo "[goose-v149-v8] downloaded ${size} bytes -> ${CACHE_FILE}"

GOOSED_ROOT="${GOOSED_V149_ROOT:-/Users/john/Project/tkmind_go-v149}"
GN_OUT="${GOOSED_ROOT}/target/release/gn_out/obj"
if [[ -d "${GOOSED_ROOT}/target/release" ]]; then
  rm -rf "${GOOSED_ROOT}/target/release/gn_out"
  rm -f "${GOOSED_ROOT}/target/release/build"/v8-*/out/*.a 2>/dev/null || true
  echo "[goose-v149-v8] cleared stale gn_out under ${GOOSED_ROOT}/target/release"
fi