#!/bin/bash
set -euo pipefail

: "${TARGET_HOSTS:?TARGET_HOSTS is not configured}"
: "${SSH_USER:?SSH_USER is not configured}"

SSH_KEY="$HOME/.ssh/ansible_ed25519"

if [[ ! -r "$SSH_KEY" ]]; then
    echo "ERROR: SSH key not found: $SSH_KEY"
    exit 1
fi

for host in $TARGET_HOSTS; do
    echo "Connecting to $host..."

    ssh \
        -i "$SSH_KEY" \
        -o IdentitiesOnly=yes \
        -o BatchMode=yes \
        -o StrictHostKeyChecking=accept-new \
        "$SSH_USER@$host" \
        'hostname'
done