install.sh

#!/bin/bash

set -e

# Claude Code installer — patched for Termux (uses grun for glibc compatibility)
# Original: curl -fsSL https://claude.ai/install.sh | bash

# Parse command line arguments
TARGET="$1"  # Optional target parameter

# Validate target if provided
if [[ -n "$TARGET" ]] && [[ ! "$TARGET" =~ ^(stable|latest|[0-9]+\.[0-9]+\.[0-9]+(-[^[:space:]]+)?)$ ]]; then
    echo "Usage: $0 [stable|latest|VERSION]" >&2
    exit 1
fi

# Check for grun (required on Termux)
if ! command -v grun >/dev/null 2>&1; then
    echo "grun is required on Termux. Install it with:" >&2
    echo "  pkg install glibc-repo && pkg install glibc-runner" >&2
    exit 1
fi

GCS_BUCKET="https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases"
DOWNLOAD_DIR="$HOME/.claude/downloads"

# Check for required dependencies
DOWNLOADER=""
if command -v curl >/dev/null 2>&1; then
    DOWNLOADER="curl"
elif command -v wget >/dev/null 2>&1; then
    DOWNLOADER="wget"
else
    echo "Either curl or wget is required but neither is installed" >&2
    exit 1
fi

# Check if jq is available (optional)
HAS_JQ=false
if command -v jq >/dev/null 2>&1; then
    HAS_JQ=true
fi

# Download function that works with both curl and wget
download_file() {
    local url="$1"
    local output="$2"

    if [ "$DOWNLOADER" = "curl" ]; then
        if [ -n "$output" ]; then
            curl -fsSL -o "$output" "$url"
        else
            curl -fsSL "$url"
        fi
    elif [ "$DOWNLOADER" = "wget" ]; then
        if [ -n "$output" ]; then
            wget -q -O "$output" "$url"
        else
            wget -q -O - "$url"
        fi
    else
        return 1
    fi
}

# Simple JSON parser for extracting checksum when jq is not available
get_checksum_from_manifest() {
    local json="$1"
    local platform="$2"

    # Normalize JSON to single line and extract checksum
    json=$(echo "$json" | tr -d '\n\r\t' | sed 's/ \+/ /g')

    # Extract checksum for platform using bash regex
    if [[ $json =~ \"$platform\"[^}]*\"checksum\"[[:space:]]*:[[:space:]]*\"([a-f0-9]{64})\" ]]; then
        echo "${BASH_REMATCH[1]}"
        return 0
    fi

    return 1
}

# Force linux arm64 platform (Termux on Android is always this)
os="linux"
case "$(uname -m)" in
    arm64|aarch64) arch="arm64" ;;
    x86_64|amd64) arch="x64" ;;
    *) echo "Unsupported architecture: $(uname -m)" >&2; exit 1 ;;
esac
platform="linux-${arch}"

mkdir -p "$DOWNLOAD_DIR"

# Always download latest version
version=$(download_file "$GCS_BUCKET/latest")
echo "Downloading Claude Code $version for $platform (Termux/grun)..."

# Download manifest and extract checksum
manifest_json=$(download_file "$GCS_BUCKET/$version/manifest.json")

# Use jq if available, otherwise fall back to pure bash parsing
if [ "$HAS_JQ" = true ]; then
    checksum=$(echo "$manifest_json" | jq -r ".platforms[\"$platform\"].checksum // empty")
else
    checksum=$(get_checksum_from_manifest "$manifest_json" "$platform")
fi

# Validate checksum format (SHA256 = 64 hex characters)
if [ -z "$checksum" ] || [[ ! "$checksum" =~ ^[a-f0-9]{64}$ ]]; then
    echo "Platform $platform not found in manifest" >&2
    exit 1
fi

# Download and verify
binary_path="$DOWNLOAD_DIR/claude-$version-$platform"
if ! download_file "$GCS_BUCKET/$version/$platform/claude" "$binary_path"; then
    echo "Download failed" >&2
    rm -f "$binary_path"
    exit 1
fi

actual=$(sha256sum "$binary_path" | cut -d' ' -f1)

if [ "$actual" != "$checksum" ]; then
    echo "Checksum verification failed" >&2
    rm -f "$binary_path"
    exit 1
fi

chmod +x "$binary_path"

# Skip sharp native binaries (SELinux blocks them on Android)
# These are optional — Claude Code works without them (no image paste support)
export SHARP_IGNORE_GLOBAL_LIBVIPS=1
export BUN_CONFIG_IGNORE_INSTALL_SCRIPTS=true

# Run claude install via grun (the Termux fix)
echo "Setting up Claude Code (via grun)..."
grun "$binary_path" install ${TARGET:+"$TARGET"}

# Clean up downloaded file
rm -f "$binary_path"

echo ""
echo "✅ Installation complete!"
echo ""
echo "NOTE: You still need to set up the proot wrapper and launcher."
echo "  See the README for installing claude-termux and cl."
echo ""