#!/bin/bash
# Install Loki Stack for Logging

set -e

NAMESPACE="monitoring"
RELEASE_NAME="loki"

echo "📊 Installing Loki Stack..."

# Check prerequisites
command -v helm >/dev/null 2>&1 || { echo "❌ helm not found"; exit 1; }
command -v kubectl >/dev/null 2>&1 || { echo "❌ kubectl not found"; exit 1; }

# Create namespace
echo "📦 Creating namespace: $NAMESPACE"
kubectl create namespace "$NAMESPACE" --dry-run=client -o yaml | kubectl apply -f -

# Add Grafana Helm repo
echo "📥 Adding Grafana Helm repository..."
helm repo add grafana https://grafana.github.io/helm-charts
helm repo update

# Install Loki Stack
echo "🚀 Installing Loki Stack..."
helm upgrade --install "$RELEASE_NAME" grafana/loki-stack \
  --namespace "$NAMESPACE" \
  --create-namespace \
  --values values.yaml \
  --wait

echo "✅ Loki Stack installed successfully!"
echo ""
echo "📝 Access Grafana:"
echo "   kubectl port-forward -n $NAMESPACE svc/$RELEASE_NAME-grafana 3000:80"