#!/bin/bash
# Configure ccache directory and size.
# NOTE: Android 13+ build system blocks CC_WRAPPER/CXX_WRAPPER — ccache cannot
# wrap the compiler. CCACHE_DIR is set for reference only; Soong handles caching.
# $1 = cache size limit (default: 30G)

CCACHE_PATH=/mnt/ssd/ccache
CACHE_SIZE="${1:-30G}"
BASHRC="$HOME/.bashrc"

mkdir -p "$CCACHE_PATH"

CCACHE_DIR="$CCACHE_PATH" ccache -M "$CACHE_SIZE"
CCACHE_DIR="$CCACHE_PATH" ccache --set-config=compression=true
CCACHE_DIR="$CCACHE_PATH" ccache --set-config=compression_level=1

export CCACHE_DIR="$CCACHE_PATH"

if ! grep -q 'CCACHE_DIR' "$BASHRC"; then
  cat >> "$BASHRC" << 'EOF'

# ccache dir (Android 16 — compiler wrapping not supported, Soong handles caching)
export CCACHE_DIR=/mnt/ssd/ccache
EOF
  echo "CCACHE_DIR written to $BASHRC"
else
  # Remove any CC_WRAPPER/CXX_WRAPPER/USE_CCACHE/CCACHE_EXEC lines if present
  sed -i '/CC_WRAPPER\|CXX_WRAPPER\|USE_CCACHE\|CCACHE_EXEC/d' "$BASHRC"
  echo "Cleaned up unsupported ccache wrapper vars from $BASHRC"
fi

echo ""
CCACHE_DIR="$CCACHE_PATH" ccache -s