#!/usr/bin/env bash

if [ -z "$KUBECONFIG" ]; then
  echo "KUBECONFIG is not set!"
  echo
  echo "You can add it to your .bashrc or .zshrc:"
  echo '> export KUBECONFIG="$HOME/.kube/config"'
  exit 1
fi

# set -x

### === Initial K3D Setup ===
k3d cluster create inception-of-things

# Setup a metrics-server to prevent dumb errors
kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml
kubectl patch deployment metrics-server -n kube-system --type='json' \
  -p='[{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--kubelet-insecure-tls"}]'
echo '> metrics-server is starting (this takes around ~3 minutes)...'
kubectl wait --for=condition=available deployment/metrics-server -n kube-system --timeout=500s

### === ArgoCD ===
kubectl create namespace argocd
kubectl apply -n argocd -f https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml

echo "> ArgoCD is starting (this takes around ~6 minutes)..."
kubectl wait --namespace argocd \
  --for=condition=ready pod \
  --selector=app.kubernetes.io/name=argocd-server \
  --timeout=300s \
  1>/dev/null 2>/dev/null
echo '> Starting watch...'
sleep 5

# So we have a progress-ish indicator visual
while true; do
  ready=$(kubectl get pods -n argocd --no-headers 2>/dev/null | grep -E "([0-9]+)/\1" | wc -l)
  total=$(kubectl get pods -n argocd --no-headers 2>/dev/null | wc -l)

  clear
  kubectl get pods -n argocd
  
  if [ "$ready" -eq "$total" ] && [ "$total" -gt 0 ]; then
    break
  fi
  
  sleep 30
done

echo "ArgoCD is ready!"
echo '> To setup port-forwarding, run:'
echo '>   kubectl port-forward -n argocd svc/argocd-server 8080:443'
kubectl port-forward -n argocd svc/argocd-server 8080:443 1>/dev/null 2>/dev/null &

#TODO: The app will be imported via Gitlab, don't import it here
# so we don't have 2 of the same deployment.
#
# SCRIPT_PATH="$(realpath "${BASH_SOURCE[0]}")"
# SCRIPT_DIR="$(dirname "$SCRIPT_PATH")"
#
# kubectl create namespace dev
# kubectl apply -n argocd -f "$SCRIPT_DIR/../confs/argocd-app.yml"
# echo '>'
# echo '> App is starting (this takes around ~30 seconds)...'
# echo '>'
# sleep 5 # THIS SLEEP IS REQUIRED, IT BREAKS WITHOUT IT, TRUST -kiroussa
# kubectl wait --namespace dev \
#   --for=condition=ready pod \
#   --selector=app=app-p3 \
#   --timeout=300s
# echo 'App imported in ArgoCD'
# sleep 2

### === Gitlab ===
kubectl create namespace gitlab
helm repo add gitlab https://charts.gitlab.io/
helm repo update
# This is the second time a MAJOR SERVICE's prod has gone down while we're the day before the push.
# I hate this world.
helm upgrade --install gitlab gitlab/gitlab \
  -f https://gitlab.com/gitlab-org/charts/gitlab/raw/master/examples/values-minikube-minimum.yaml \
  --namespace gitlab \
  --timeout 1200s \
  --set global.hosts.domain=gitlab-app.com \
  --set global.hosts.externalIP=0.0.0.0 \
  --set global.hosts.https=false \
  --disable-openapi-validation

echo '>'
echo '> GitLab is starting (this takes around ~10 minutes)...'
echo '>'
echo '> To watch the pods status, run:'
echo '>   kubectl get pods -n gitlab -w'
echo '>'
sleep 5

kubectl wait --namespace gitlab \
  --for=condition=available \
  --timeout=1200s \
  deployment/gitlab-webservice-default

echo 'GitLab is ready!'
echo
echo '> To setup port-forwarding, run:'
echo '>   kubectl port-forward -n gitlab svc/gitlab-webservice-default 8081:8181'

kubectl port-forward -n gitlab svc/gitlab-webservice-default 8081:8181 1>/dev/null 2>/dev/null &
### === Setup /etc/hosts ===
function add_host() {
	local ip=$1
	local domain=$2
	local service=$3

	# If it's already there, remove it
	if grep -q $domain /etc/hosts; then
		sudo sed -i "/$domain/d" /etc/hosts
	fi

	# Add it
	echo "$ip $domain" | sudo tee -a "/etc/hosts"
	echo "$service is now reachable at $domain"
}

TRAEFIK_IP=$(kubectl get service -n kube-system traefik -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
add_host "$TRAEFIK_IP" "argo-app.com" "ArgoCD"
add_host "$TRAEFIK_IP" "gitlab-app.com" "Gitlab"

### === Login ===
echo "=== Login into ArgoCD with: ==="
echo Username: admin
echo -n "Password: "
kubectl -n argocd get secret argocd-initial-admin-secret -o jsonpath="{.data.password}" | base64 -d
echo
echo "==============================="
echo
echo "=== Login into Gitlab with: ==="
echo Username: root
echo -n "Password: "
kubectl -n gitlab get secret gitlab-gitlab-initial-root-password -o jsonpath='{.data.password}' | base64 -d
echo
echo "==============================="