#!/bin/bash
set -e

SKILLS_DIR="${SKILLS_DIR:-/skills}"
OPENCLAW_DATA_DIR="${OPENCLAW_DATA_DIR:-/data/openclaw}"

# Install Node.js 22+ (required for OpenClaw)
install_node() {
    if command -v node &>/dev/null; then
        local version=$(node --version | sed 's/v//' | cut -d. -f1)
        if [ "$version" -ge 22 ]; then
            echo "Node.js already installed: $(node --version)"
            return 0
        fi
        echo "Node.js version too old, upgrading..."
    fi

    echo "Installing Node.js 22..."
    curl -fsSL https://deb.nodesource.com/setup_22.x | bash -
    apt-get install -y nodejs

    echo "Node.js installed: $(node --version)"
}

# Install OpenClaw
install_openclaw() {
    if command -v openclaw &>/dev/null; then
        echo "OpenClaw already installed: $(openclaw --version 2>/dev/null || echo 'installed')"
        return 0
    fi

    echo "Installing OpenClaw..."
    npm install -g openclaw@latest

    echo "OpenClaw installed"
}

# Setup directories
setup_dirs() {
    mkdir -p "$OPENCLAW_DATA_DIR"
    echo "Data directory: $OPENCLAW_DATA_DIR"
}

# Configure Caddy if present
configure_caddy() {
    local caddy_dir="$SKILLS_DIR/caddy"
    local openclaw_port="${OPENCLAW_PORT:-18789}"
    local openclaw_domain="${OPENCLAW_DOMAIN:-}"

    if [ ! -d "$caddy_dir" ]; then
        echo "Caddy not found - OpenClaw on port $openclaw_port"
        return 0
    fi

    echo "Caddy detected - configuring reverse proxy..."
    mkdir -p "$caddy_dir/snippets.d"

    local snippet="$caddy_dir/snippets.d/openclaw.caddy"

    if [ -n "$openclaw_domain" ]; then
        cat > "$snippet" << EOF
# Auto-generated by openclaw skill
$openclaw_domain {
    reverse_proxy localhost:$openclaw_port
}
EOF
        echo "Caddy config: $openclaw_domain -> localhost:$openclaw_port"
    else
        cat > "$snippet" << EOF
# Auto-generated by openclaw skill
# Add to your site block:
# handle /openclaw/* {
#     uri strip_prefix /openclaw
#     reverse_proxy localhost:$openclaw_port
# }
EOF
        echo "Caddy snippet created (manual config needed)"
    fi
}

# Check auth
check_auth() {
    if [ -z "$ANTHROPIC_API_KEY" ]; then
        echo "WARNING: ANTHROPIC_API_KEY not set - OpenClaw needs this for Claude"
    else
        echo "Authentication configured"
    fi
}

install_node
install_openclaw
setup_dirs
configure_caddy
check_auth

echo "OpenClaw setup complete"
echo "Run 'openclaw onboard' to configure channels"