#!/bin/bash
set -e

# Idempotent Caddy installation
install_caddy() {
    if command -v caddy &>/dev/null; then
        echo "caddy already installed: $(caddy version)"
        return 0
    fi

    echo "Installing Caddy..."

    # Install dependencies
    apt-get update
    apt-get install -y debian-keyring debian-archive-keyring apt-transport-https curl

    # Add Caddy GPG key and repository
    curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/gpg.key' | gpg --dearmor -o /usr/share/keyrings/caddy-stable-archive-keyring.gpg
    curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/debian.deb.txt' | tee /etc/apt/sources.list.d/caddy-stable.list

    # Install Caddy
    apt-get update
    apt-get install -y caddy

    echo "Caddy installed: $(caddy version)"
}

# Create data directory
setup_dirs() {
    local data_dir="${CADDY_DATA_DIR:-/data/caddy}"
    mkdir -p "$data_dir"
    echo "Caddy data directory: $data_dir"
}

install_caddy
setup_dirs