1#!/usr/bin/env bash
2# Install the Android SDK packages the build needs into $ANDROID_HOME, with sdkmanager. Idempotent: a
3# package already there is not fetched again.
4#
5#     mise run android:sdk
6#
7# Environment (mise.toml sets all of it; set them yourself to run this without mise):
8#   ANDROID_HOME                    the SDK directory (the android-sdk tool's own, under mise)
9#   WHISKERS_ANDROID_PLATFORM       API level of the platform, e.g. 37.0 (the sdkmanager package android-37.0)
10#   WHISKERS_ANDROID_BUILD_TOOLS    e.g. 36.0.0
11#   WHISKERS_ANDROID_NDK            e.g. 29.0.14206865
12# sdkmanager (the command-line tools) and a JDK must be on PATH.
13#
14# On NixOS the downloaded NDK and build tools are ordinary dynamically linked programs: they need nix-ld
15# (programs.nix-ld.enable) or the repository's `nix develop .#fhs` shell.
16set -euo pipefail
17: "${ANDROID_HOME:?set ANDROID_HOME to the SDK directory (mise sets it from the android-sdk tool)}"
18: "${WHISKERS_ANDROID_PLATFORM:?}" "${WHISKERS_ANDROID_BUILD_TOOLS:?}" "${WHISKERS_ANDROID_NDK:?}"
19command -v sdkmanager >/dev/null || { echo "sdkmanager is not on PATH: install the Android command-line tools (mise install) or add them to PATH" >&2; exit 1; }
20
21need=()
22[ -d "$ANDROID_HOME/platforms/android-$WHISKERS_ANDROID_PLATFORM" ] || need+=("platforms;android-$WHISKERS_ANDROID_PLATFORM")
23[ -d "$ANDROID_HOME/build-tools/$WHISKERS_ANDROID_BUILD_TOOLS" ] || need+=("build-tools;$WHISKERS_ANDROID_BUILD_TOOLS")
24[ -d "$ANDROID_HOME/ndk/$WHISKERS_ANDROID_NDK" ] || need+=("ndk;$WHISKERS_ANDROID_NDK")
25[ -d "$ANDROID_HOME/platform-tools" ] || need+=("platform-tools")
26if [ ${#need[@]} -eq 0 ]; then
27  echo "android-sdk: already installed in $ANDROID_HOME"
28  exit 0
29fi
30echo "android-sdk: installing ${need[*]}"
31# sdkmanager asks questions on stdin; answer them. `yes` ends with SIGPIPE, hence the subshell.
32(yes 2>/dev/null || true) | sdkmanager --sdk_root="$ANDROID_HOME" --install "${need[@]}"