#!/bin/bash
set -e
set -o pipefail

if [ -z "${WILD_INSTANCE}" ]; then
    echo "ERROR: WILD_INSTANCE is not set"
    exit 1
fi

if [ -z "${WILD_API_DATA_DIR}" ]; then
    echo "ERROR: WILD_API_DATA_DIR is not set"
    exit 1
fi

if [ -z "${KUBECONFIG}" ]; then
    echo "ERROR: KUBECONFIG is not set"
    exit 1
fi

INSTANCE_DIR="${WILD_API_DATA_DIR}/instances/${WILD_INSTANCE}"
EXTERNALDNS_DIR="${INSTANCE_DIR}/apps/externaldns"

echo "=== Setting up ExternalDNS ==="
echo ""

echo "Verifying cert-manager is ready (required for ExternalDNS)..."
kubectl wait --for=condition=Available deployment/cert-manager -n cert-manager --timeout=60s 2>/dev/null && \
kubectl wait --for=condition=Available deployment/cert-manager-webhook -n cert-manager --timeout=60s 2>/dev/null || {
    echo "cert-manager not ready, but continuing with ExternalDNS installation"
    echo "Note: ExternalDNS may not work properly without cert-manager"
}

echo "Using pre-compiled ExternalDNS templates..."
if [ ! -f "${EXTERNALDNS_DIR}/kustomization.yaml" ]; then
    echo "ERROR: Compiled templates not found at ${EXTERNALDNS_DIR}"
    echo "Templates should be compiled before deployment."
    exit 1
fi

echo "Deploying ExternalDNS..."
kubectl apply -k ${EXTERNALDNS_DIR}/

echo "Creating Cloudflare API token secret..."
SECRETS_FILE="${WILD_API_DATA_DIR}/instances/${WILD_INSTANCE}/secrets.yaml"
CLOUDFLARE_API_TOKEN=$(yq '.apps.externaldns.cert-manager\.cloudflareToken' "$SECRETS_FILE" 2>/dev/null | tr -d '"')

if [ -z "$CLOUDFLARE_API_TOKEN" ] || [ "$CLOUDFLARE_API_TOKEN" = "null" ]; then
    echo "ERROR: Cloudflare API token not found."
    echo "Please ensure cert-manager has been added with a cloudflareToken secret."
    exit 1
fi
kubectl create secret generic cloudflare-api-token \
  --namespace externaldns \
  --from-literal=api-token="${CLOUDFLARE_API_TOKEN}" \
  --dry-run=client -o yaml | kubectl apply -f -

echo "Waiting for Cloudflare ExternalDNS to be ready..."
kubectl rollout status deployment/external-dns -n externaldns --timeout=60s

echo ""
echo "ExternalDNS installed successfully"
echo ""
echo "To verify the installation:"
echo "  kubectl get pods -n externaldns"
echo "  kubectl logs -n externaldns -l app=external-dns -f"
echo ""