#!/usr/bin/env bash

set -euo pipefail

echo "Starting Cilium installation..."

# Add Cilium Helm repository
echo "Adding Cilium Helm repository..."
helm repo add cilium https://helm.cilium.io/
helm repo update

# Install Cilium
echo "Installing Cilium..."
helm upgrade --install \
    cilium \
    cilium/cilium \
    --version 1.18.3 \
    --namespace kube-system \
    --create-namespace \
    --values "$(dirname "$0")/values.yaml" \
    --wait

# Wait for Cilium to be ready
echo "Waiting for Cilium DaemonSet to be ready..."
kubectl rollout status daemonset/cilium -n kube-system --timeout=300s

# Wait for Hubble components if enabled
echo "Waiting for Hubble components..."
kubectl rollout status deployment/hubble-relay -n kube-system --timeout=300s
kubectl rollout status deployment/hubble-ui -n kube-system --timeout=300s

# Apply post-install configurations if any exist
if [ -d "$(dirname "$0")/post-install" ]; then
    echo "Applying post-install configurations..."
    kubectl apply --recursive -f "$(dirname "$0")/post-install/"
fi

echo "Checking Cilium status..."
if command -v cilium &> /dev/null; then
    cilium status
else
    echo "Cilium CLI not found. To install:"
    echo "brew install cilium-cli"
fi

echo
echo "Installation complete!"
echo
echo "To access Hubble UI:"
echo "1. Run port-forward:"
echo "   kubectl port-forward -n kube-system svc/hubble-ui 12000:80"
echo "2. Visit: http://localhost:12000"
echo
echo "To verify installation:"
echo "1. Check pod status:    kubectl get pods -n kube-system -l k8s-app=cilium"
echo "2. Check Hubble UI:     kubectl get deployment -n kube-system hubble-ui"
echo "3. Install Cilium CLI:  brew install cilium-cli"