#!/usr/bin/env bash

# This script runs e2e tests for Skipper canary initialization, analysis and promotion

set -o errexit

REPO_ROOT=$(git rev-parse --show-toplevel)

echo '>>> Creating ingress'
cat <<EOF | kubectl apply -f -
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: podinfo-ingress
  namespace: test
  labels:
    app: podinfo
  annotations:
    kubernetes.io/ingress.class: "skipper"
spec:
  rules:
  - host: "app.example.com"
    http:
      paths:
      - pathType: Prefix
        path: "/"
        backend:
          service:
            name: podinfo-service
            port:
              number: 80
EOF

echo '>>> Creating canary'
cat <<EOF | kubectl apply -f -
apiVersion: flagger.app/v1beta1
kind: Canary
metadata:
  name: podinfo
  namespace: test
spec:
  provider: skipper
  targetRef:
    apiVersion: apps/v1
    kind: Deployment
    name: podinfo
  ingressRef:
    apiVersion: networking.k8s.io/v1
    kind: Ingress
    name: podinfo-ingress
  service:
    name: podinfo-service
    port: 80
    targetPort: http
  analysis:
    interval: 15s
    threshold: 5
    maxWeight: 100
    stepWeight: 10
    metrics:
    - name: request-success-rate
      interval: 15s
      thresholdRange:
        min: 99
    - name: request-duration
      interval: 15s
      thresholdRange:
        max: 500
    webhooks:
      - name: acceptance-test
        type: pre-rollout
        url: http://flagger-loadtester.test/
        timeout: 10s
        metadata:
          type: bash
          cmd: "curl -sd 'test' http://podinfo-service-canary/token | grep token"
      - name: "load test"
        type: rollout
        url: http://flagger-loadtester.test/
        timeout: 5s
        metadata:
          type: cmd
          cmd: "hey -z 10m -q 10 -c 2 -host app.example.com http://skipper-ingress.kube-system"
EOF

echo '>>> Waiting for primary to be ready'
retries=50
count=0
ok=false
until ${ok}; do
    kubectl -n test get canary/podinfo | grep 'Initialized' && ok=true || ok=false
    sleep 5
    count=$(($count + 1))
    if [[ ${count} -eq ${retries} ]]; then
        kubectl -n flagger-system logs deployment/flagger
        echo "No more retries left"
        exit 1
    fi
done

echo '✔ Canary initialization test passed'

echo '>>> Triggering canary deployment'
kubectl -n test set image deployment/podinfo podinfod=ghcr.io/stefanprodan/podinfo:6.0.1

echo '>>> Waiting for canary promotion'
retries=50
count=0
ok=false
until ${ok}; do
    kubectl -n test describe deployment/podinfo-primary | grep '6.0.1' && ok=true || ok=false
    sleep 10
    kubectl -n flagger-system logs deployment/flagger --tail 1
    count=$(($count + 1))
    if [[ ${count} -eq ${retries} ]]; then
        kubectl -n test describe deployment/podinfo
        kubectl -n test describe deployment/podinfo-primary
        kubectl -n flagger-system logs deployment/flagger
        echo "No more retries left"
        exit 1
    fi
done

echo '✔ Canary promotion test passed'