#!/usr/bin/env bash
set -euo pipefail

ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cd "$ROOT_DIR"

VERGABE_RELEASE="${VERGABE_RELEASE:-vergabe-teilnahme}"
VERGABE_NAMESPACE="${VERGABE_NAMESPACE:-vergabe-teilnahme}"
VERGABE_CHART="${VERGABE_CHART:-charts/vergabe-teilnahme}"
VERGABE_VALUES="${VERGABE_VALUES:-helm/vergabe-teilnahme-values.yaml}"
INTER_HUB_RELEASE="${INTER_HUB_RELEASE:-inter-hub}"
INTER_HUB_NAMESPACE="${INTER_HUB_NAMESPACE:-inter-hub}"
INTER_HUB_CHART="${INTER_HUB_CHART:-charts/inter-hub}"
INTER_HUB_VALUES="${INTER_HUB_VALUES:-helm/inter-hub-values.yaml}"
DRY_RUN_CREATE_NAMESPACES="${DRY_RUN_CREATE_NAMESPACES:-false}"

for cmd in kubectl helm; do
  if ! command -v "$cmd" >/dev/null 2>&1; then
    echo "ERROR: missing required command: $cmd" >&2
    exit 1
  fi
done

echo "server dry-run: checking Kubernetes API discovery"
if ! kubectl api-resources >/dev/null; then
  echo "ERROR: cannot reach a representative Kubernetes API server" >&2
  echo "Check kubeconfig, runner placement, and cluster access prerequisites." >&2
  echo "See docs/manifest-server-dry-run.md." >&2
  exit 1
fi

if [[ "$DRY_RUN_CREATE_NAMESPACES" == "true" ]]; then
  echo "server dry-run: ensuring namespace $VERGABE_NAMESPACE exists"
  kubectl create namespace "$VERGABE_NAMESPACE" --dry-run=client -o yaml | kubectl apply -f -
  echo "server dry-run: ensuring namespace $INTER_HUB_NAMESPACE exists"
  kubectl create namespace "$INTER_HUB_NAMESPACE" --dry-run=client -o yaml | kubectl apply -f -
fi

tmpdir="$(mktemp -d)"
trap 'rm -rf "$tmpdir"' EXIT

helm template "$VERGABE_RELEASE" "$VERGABE_CHART" \
  --namespace "$VERGABE_NAMESPACE" \
  -f "$VERGABE_VALUES" \
  > "$tmpdir/vergabe-teilnahme.yaml"

helm template "$INTER_HUB_RELEASE" "$INTER_HUB_CHART" \
  --namespace "$INTER_HUB_NAMESPACE" \
  -f "$INTER_HUB_VALUES" \
  > "$tmpdir/inter-hub.yaml"

echo "server dry-run: committed manifests"
kubectl apply --dry-run=server -f manifests

echo "server dry-run: rendered $VERGABE_RELEASE chart"
kubectl apply --dry-run=server -n "$VERGABE_NAMESPACE" -f "$tmpdir/vergabe-teilnahme.yaml"

echo "server dry-run: rendered $INTER_HUB_RELEASE chart"
kubectl apply --dry-run=server -n "$INTER_HUB_NAMESPACE" -f "$tmpdir/inter-hub.yaml"