#!/usr/bin/env bash
# install-android-sdk.sh — Install Android SDK command-line tools only (no Android Studio).
# Installs to ~/android-sdk. Run once; takes ~1 GB of disk space.

set -euo pipefail

SDK_DIR="$HOME/android-sdk"
CMDLINE_TOOLS_URL="https://dl.google.com/android/repository/commandlinetools-linux-12266719_latest.zip"
CMDLINE_ZIP="/tmp/android-cmdline-tools.zip"

GREEN='\033[0;32m'; NC='\033[0m'
info() { echo -e "${GREEN}[sdk-install]${NC} $*"; }

if [ -d "$SDK_DIR/cmdline-tools/latest/bin" ]; then
  info "Android SDK already installed at $SDK_DIR"
  exit 0
fi

info "Downloading Android command-line tools…"
wget -q --show-progress -O "$CMDLINE_ZIP" "$CMDLINE_TOOLS_URL"

info "Extracting…"
mkdir -p "$SDK_DIR/cmdline-tools"
unzip -q "$CMDLINE_ZIP" -d "$SDK_DIR/cmdline-tools"
mv "$SDK_DIR/cmdline-tools/cmdline-tools" "$SDK_DIR/cmdline-tools/latest"
rm "$CMDLINE_ZIP"

export ANDROID_HOME="$SDK_DIR"
export PATH="$PATH:$SDK_DIR/cmdline-tools/latest/bin:$SDK_DIR/platform-tools"

info "Accepting licenses…"
yes | sdkmanager --licenses > /dev/null 2>&1 || true

info "Installing SDK components (platform-tools, build-tools 35, NDK 28)…"
sdkmanager \
  "platform-tools" \
  "platforms;android-35" \
  "build-tools;35.0.0" \
  "ndk;28.2.13676358"

info "Done. Add this to your ~/.bashrc or ~/.zshrc:"
echo ""
echo '  export ANDROID_HOME="$HOME/android-sdk"'
echo '  export PATH="$PATH:$ANDROID_HOME/cmdline-tools/latest/bin:$ANDROID_HOME/platform-tools"'
echo ""
info "Then reload your shell: source ~/.bashrc"