#!/usr/bin/env bash
# Pre-download Android Gradle Plugin into a local Maven repo inside the image.
set -euo pipefail

AGP_VERSION="${ANDROID_GRADLE_PLUGIN_VERSION:-8.11.0}"
LOCAL_REPO="${ANDROID_AGP_LOCAL_REPO:-/opt/android-agp-maven}"

try_download() {
  local base_url="$1"
  local dest_dir="${LOCAL_REPO}/com/android/tools/build/gradle/${AGP_VERSION}"
  mkdir -p "${dest_dir}"

  if curl -fsSL --connect-timeout 20 --max-time 120 \
    "${base_url}/com/android/tools/build/gradle/${AGP_VERSION}/gradle-${AGP_VERSION}.pom" \
    -o "${dest_dir}/gradle-${AGP_VERSION}.pom"; then
    curl -fsSL --connect-timeout 20 --max-time 600 \
      "${base_url}/com/android/tools/build/gradle/${AGP_VERSION}/gradle-${AGP_VERSION}.jar" \
      -o "${dest_dir}/gradle-${AGP_VERSION}.jar"
    echo "${base_url}"
    return 0
  fi
  return 1
}

echo "==> Prefetch Android Gradle Plugin ${AGP_VERSION}"

MIRROR=""
for base in \
  "https://maven.google.com" \
  "https://dl.google.com/android/maven2" \
  "https://dl.google.com/dl/android/maven2"; do
  if MIRROR="$(try_download "${base}")"; then
    echo "==> AGP ${AGP_VERSION} cached from ${MIRROR}"
    break
  fi
done

if [ -z "${MIRROR}" ]; then
  echo "Не удалось скачать Android Gradle Plugin ${AGP_VERSION} ни из одного зеркала Google Maven" >&2
  exit 1
fi

cat > "${LOCAL_REPO}/README.txt" <<EOF
Local cache for com.android.tools.build:gradle:${AGP_VERSION}
Source: ${MIRROR}
EOF

echo "==> Local AGP repo: ${LOCAL_REPO}"