/*
  Cluster tests are run if there is a pre-existing minikube cluster. Before running cluster tests the TEST_NAMESPACE
  namespace is removed, if it exists, from the minikube cluster. Resources are created as part of the cluster tests in the
  TEST_NAMESPACE namespace. This is done to minimize destructive impact of the cluster tests on an existing minikube
  cluster and vice versa.
*/
import { Application } from "spectron"
import * as util from "../helpers/utils"
import { spawnSync } from "child_process"

const describeif = (condition: boolean) => condition ? describe : describe.skip
const itif = (condition: boolean) => condition ? it : it.skip

jest.setTimeout(60000)

describe("Lens integration tests", () => {
  const TEST_NAMESPACE = "integration-tests"

  const BACKSPACE = "\uE003"
  let app: Application

  const appStart = async () => {
    app = util.setup()
    await app.start()
    // Wait for splash screen to be closed
    while (await app.client.getWindowCount() > 1);
    await app.client.windowByIndex(0)
    await app.client.waitUntilWindowLoaded()
  }

  const clickWhatsNew = async (app: Application) => {
    await app.client.waitUntilTextExists("h1", "What's new?")
    await app.client.click("button.primary")
    await app.client.waitUntilTextExists("h1", "Welcome")
  }

  describe("app start", () => {
    beforeAll(appStart, 20000)

    afterAll(async () => {
      if (app && app.isRunning()) {
        return util.tearDown(app)
      }
    })

    it('shows "whats new"', async () => {
      await clickWhatsNew(app)
    })

    // Todo figure out how to access main menu to get these to work
    it.skip('shows "add cluster"', async () => {
      await app.client.keys(['Shift', 'Meta', 'A'])
      await app.client.waitUntilTextExists("h2", "Add Cluster")
      await app.client.keys(['Shift', 'Meta'])
    })

    it.skip('shows "preferences"', async () => {
      await app.client.keys(['Meta', ','])
      await app.client.waitUntilTextExists("h2", "Preferences")
      await app.client.keys('Meta')
    })

    it.skip('quits Lens"', async () => {
      await app.client.keys(['Meta', 'Q'])
      await app.client.keys('Meta')
    })
  })

  const minikubeReady = (): boolean => {
    // determine if minikube is running
    let status = spawnSync("minikube status", { shell: true })
    if (status.status !== 0) {
      console.warn("minikube not running")
      return false
    }

    // Remove TEST_NAMESPACE if it already exists
    status = spawnSync(`minikube kubectl -- get namespace ${TEST_NAMESPACE}`, { shell: true })
    if (status.status === 0) {
      console.warn(`Removing existing ${TEST_NAMESPACE} namespace`)
      status = spawnSync(`minikube kubectl -- delete namespace ${TEST_NAMESPACE}`, { shell: true })
      if (status.status !== 0) {
        console.warn(`Error removing ${TEST_NAMESPACE} namespace: ${status.stderr.toString()}`)
        return false
      }
      console.log(status.stdout.toString())
    }
    return true
  }
  const ready = minikubeReady()

  const addMinikubeCluster = async (app: Application) => {
    await app.client.click("div.add-cluster")
    await app.client.waitUntilTextExists("div", "Select kubeconfig file")
    await app.client.click("div.Select__control") // show the context drop-down list
    await app.client.waitUntilTextExists("div", "minikube")
    if (!await app.client.$("button.primary").isEnabled()) {
      await app.client.click("div.minikube") // select minikube context
    } // else the only context, which must be 'minikube', is automatically selected
    await app.client.click("div.Select__control") // hide the context drop-down list (it might be obscuring the Add cluster(s) button)
    await app.client.click("button.primary") // add minikube cluster
  }

  const waitForMinikubeDashboard = async (app: Application) => {
    await app.client.waitUntilTextExists("pre.kube-auth-out", "Authentication proxy started")
    await app.client.waitForExist(`iframe[name="minikube"]`)
    await app.client.frame("minikube")
    await app.client.waitUntilTextExists("span.link-text", "Cluster")
  }

  describeif(ready)("cluster tests", () => {
    let clusterAdded = false

    const addCluster = async () => {
      await clickWhatsNew(app)
      await addMinikubeCluster(app)
      await waitForMinikubeDashboard(app)
      await app.client.click('a[href="/nodes"]')
      await app.client.waitUntilTextExists("div.TableCell", "Ready")
    }

    describe("cluster add", () => {
      beforeAll(appStart, 20000)

      afterAll(async () => {
        if (app && app.isRunning()) {
          return util.tearDown(app)
        }
      })

      it('allows to add a cluster', async () => {
        await addCluster()
        clusterAdded = true
      })
    })

    const appStartAddCluster = async () => {
      if (clusterAdded) {
        await appStart()
        await addCluster()
      }
    }

    describe("cluster pages", () => {

      beforeAll(appStartAddCluster, 40000)

      afterAll(async () => {
        if (app && app.isRunning()) {
          return util.tearDown(app)
        }
      })

      const tests: {
        drawer?: string
        drawerId?: string
        pages: {
          name: string,
          href: string,
          expectedSelector: string,
          expectedText: string
        }[]
      }[] = [{
        drawer: "",
        drawerId: "",
        pages: [{
          name: "Cluster",
          href: "cluster",
          expectedSelector: "div.Cluster div.label",
          expectedText: "Master"
        }]
      },
      {
        drawer: "",
        drawerId: "",
        pages: [{
          name: "Nodes",
          href: "nodes",
          expectedSelector: "h5.title",
          expectedText: "Nodes"
        }]
      },
      {
        drawer: "Workloads",
        drawerId: "workloads",
        pages: [{
          name: "Overview",
          href: "workloads",
          expectedSelector: "h5.box",
          expectedText: "Overview"
        },
        {
          name: "Pods",
          href: "pods",
          expectedSelector: "h5.title",
          expectedText: "Pods"
        },
        {
          name: "Deployments",
          href: "deployments",
          expectedSelector: "h5.title",
          expectedText: "Deployments"
        },
        {
          name: "DaemonSets",
          href: "daemonsets",
          expectedSelector: "h5.title",
          expectedText: "Daemon Sets"
        },
        {
          name: "StatefulSets",
          href: "statefulsets",
          expectedSelector: "h5.title",
          expectedText: "Stateful Sets"
        },
        {
          name: "Jobs",
          href: "jobs",
          expectedSelector: "h5.title",
          expectedText: "Jobs"
        },
        {
          name: "CronJobs",
          href: "cronjobs",
          expectedSelector: "h5.title",
          expectedText: "Cron Jobs"
        }]
      },
      {
        drawer: "Configuration",
        drawerId: "config",
        pages: [{
          name: "ConfigMaps",
          href: "configmaps",
          expectedSelector: "h5.title",
          expectedText: "Config Maps"
        },
        {
          name: "Secrets",
          href: "secrets",
          expectedSelector: "h5.title",
          expectedText: "Secrets"
        },
        {
          name: "Resource Quotas",
          href: "resourcequotas",
          expectedSelector: "h5.title",
          expectedText: "Resource Quotas"
        },
        {
          name: "HPA",
          href: "hpa",
          expectedSelector: "h5.title",
          expectedText: "Horizontal Pod Autoscalers"
        },
        {
          name: "Pod Disruption Budgets",
          href: "poddisruptionbudgets",
          expectedSelector: "h5.title",
          expectedText: "Pod Disruption Budgets"
        }]
      },
      {
        drawer: "Network",
        drawerId: "networks",
        pages: [{
          name: "Services",
          href: "services",
          expectedSelector: "h5.title",
          expectedText: "Services"
        },
        {
          name: "Endpoints",
          href: "endpoints",
          expectedSelector: "h5.title",
          expectedText: "Endpoints"
        },
        {
          name: "Ingresses",
          href: "ingresses",
          expectedSelector: "h5.title",
          expectedText: "Ingresses"
        },
        {
          name: "Network Policies",
          href: "network-policies",
          expectedSelector: "h5.title",
          expectedText: "Network Policies"
        }]
      },
      {
        drawer: "Storage",
        drawerId: "storage",
        pages: [{
          name: "Persistent Volume Claims",
          href: "persistent-volume-claims",
          expectedSelector: "h5.title",
          expectedText: "Persistent Volume Claims"
        },
        {
          name: "Persistent Volumes",
          href: "persistent-volumes",
          expectedSelector: "h5.title",
          expectedText: "Persistent Volumes"
        },
        {
          name: "Storage Classes",
          href: "storage-classes",
          expectedSelector: "h5.title",
          expectedText: "Storage Classes"
        }]
      },
      {
        drawer: "",
        drawerId: "",
        pages: [{
          name: "Namespaces",
          href: "namespaces",
          expectedSelector: "h5.title",
          expectedText: "Namespaces"
        }]
      },
      {
        drawer: "",
        drawerId: "",
        pages: [{
          name: "Events",
          href: "events",
          expectedSelector: "h5.title",
          expectedText: "Events"
        }]
      },
      {
        drawer: "Apps",
        drawerId: "apps",
        pages: [{
          name: "Charts",
          href: "apps/charts",
          expectedSelector: "div.HelmCharts input",
          expectedText: ""
        },
        {
          name: "Releases",
          href: "apps/releases",
          expectedSelector: "h5.title",
          expectedText: "Releases"
        }]
      },
      {
        drawer: "Access Control",
        drawerId: "users",
        pages: [{
          name: "Service Accounts",
          href: "service-accounts",
          expectedSelector: "h5.title",
          expectedText: "Service Accounts"
        },
        {
          name: "Role Bindings",
          href: "role-bindings",
          expectedSelector: "h5.title",
          expectedText: "Role Bindings"
        },
        {
          name: "Roles",
          href: "roles",
          expectedSelector: "h5.title",
          expectedText: "Roles"
        },
        {
          name: "Pod Security Policies",
          href: "pod-security-policies",
          expectedSelector: "h5.title",
          expectedText: "Pod Security Policies"
        }]
      },
      {
        drawer: "Custom Resources",
        drawerId: "custom-resources",
        pages: [{
          name: "Definitions",
          href: "crd/definitions",
          expectedSelector: "h5.title",
          expectedText: "Custom Resources"
        }]
      }];
      tests.forEach(({ drawer = "", drawerId = "", pages }) => {
        if (drawer !== "") {
          it(`shows ${drawer} drawer`, async () => {
            expect(clusterAdded).toBe(true)
            await app.client.click(`.sidebar-nav #${drawerId} span.link-text`)
            await app.client.waitUntilTextExists(`a[href^="/${pages[0].href}"]`, pages[0].name)
          })
        }
        pages.forEach(({ name, href, expectedSelector, expectedText }) => {
          it(`shows ${drawer}->${name} page`, async () => {
            expect(clusterAdded).toBe(true)
            await app.client.click(`a[href^="/${href}"]`)
            await app.client.waitUntilTextExists(expectedSelector, expectedText)
          })
        })
        if (drawer !== "") {
          // hide the drawer
          it(`hides ${drawer} drawer`, async () => {
            expect(clusterAdded).toBe(true)
            await app.client.click(`.sidebar-nav #${drawerId} span.link-text`)
            await expect(app.client.waitUntilTextExists(`a[href^="/${pages[0].href}"]`, pages[0].name, 100)).rejects.toThrow()
          })
        }
      })
    })

    describe("viewing pod logs", () => {
      beforeEach(appStartAddCluster, 40000)

      afterEach(async () => {
        if (app && app.isRunning()) {
          return util.tearDown(app)
        }
      })

      it(`shows a logs for a pod`, async () => {
        expect(clusterAdded).toBe(true)
        // Go to Pods page
        await app.client.click(".sidebar-nav #workloads span.link-text")
        await app.client.waitUntilTextExists('a[href^="/pods"]', "Pods")
        await app.client.click('a[href^="/pods"]')
        await app.client.waitUntilTextExists("div.TableCell", "kube-apiserver")
        // Open logs tab in dock
        await app.client.click(".list .TableRow:first-child")
        await app.client.waitForVisible(".Drawer")
        await app.client.click(".drawer-title .Menu li:nth-child(2)")
        // Check if controls are available
        await app.client.waitForVisible(".PodLogs .VirtualList")
        await app.client.waitForVisible(".PodLogControls")
        await app.client.waitForVisible(".PodLogControls .SearchInput")
        await app.client.waitForVisible(".PodLogControls .SearchInput input")
        // Search for semicolon
        await app.client.keys(":")
        await app.client.waitForVisible(".PodLogs .list span.active")
        // Click through controls
        await app.client.click(".PodLogControls .timestamps-icon")
        await app.client.click(".PodLogControls .undo-icon")
      })
    })

    describe("cluster operations", () => {
      beforeEach(appStartAddCluster, 40000)

      afterEach(async () => {
        if (app && app.isRunning()) {
          return util.tearDown(app)
        }
      })

      it('shows default namespace', async () => {
        expect(clusterAdded).toBe(true)
        await app.client.click('a[href="/namespaces"]')
        await app.client.waitUntilTextExists("div.TableCell", "default")
        await app.client.waitUntilTextExists("div.TableCell", "kube-system")
      })

      it(`creates ${TEST_NAMESPACE} namespace`, async () => {
        expect(clusterAdded).toBe(true)
        await app.client.click('a[href="/namespaces"]')
        await app.client.waitUntilTextExists("div.TableCell", "default")
        await app.client.waitUntilTextExists("div.TableCell", "kube-system")
        await app.client.click("button.add-button")
        await app.client.waitUntilTextExists("div.AddNamespaceDialog", "Create Namespace")
        await app.client.keys(`${TEST_NAMESPACE}\n`)
        await app.client.waitForExist(`.name=${TEST_NAMESPACE}`)
      })

      it(`creates a pod in ${TEST_NAMESPACE} namespace`, async () => {
        expect(clusterAdded).toBe(true)
        await app.client.click(".sidebar-nav #workloads span.link-text")
        await app.client.waitUntilTextExists('a[href^="/pods"]', "Pods")
        await app.client.click('a[href^="/pods"]')
        await app.client.waitUntilTextExists("div.TableCell", "kube-apiserver")
        await app.client.click('.Icon.new-dock-tab')
        await app.client.waitUntilTextExists("li.MenuItem.create-resource-tab", "Create resource")
        await app.client.click("li.MenuItem.create-resource-tab")
        await app.client.waitForVisible(".CreateResource div.ace_content")
        // Write pod manifest to editor
        await app.client.keys("apiVersion: v1\n")
        await app.client.keys("kind: Pod\n")
        await app.client.keys("metadata:\n")
        await app.client.keys("  name: nginx-create-pod-test\n")
        await app.client.keys(`namespace: ${TEST_NAMESPACE}\n`)
        await app.client.keys(BACKSPACE + "spec:\n")
        await app.client.keys("  containers:\n")
        await app.client.keys("- name: nginx-create-pod-test\n")
        await app.client.keys("  image: nginx:alpine\n")
        // Create deployment
        await app.client.waitForEnabled("button.Button=Create & Close")
        await app.client.click("button.Button=Create & Close")
        // Wait until first bits of pod appears on dashboard
        await app.client.waitForExist(".name=nginx-create-pod-test")
        // Open pod details
        await app.client.click(".name=nginx-create-pod-test")
        await app.client.waitUntilTextExists("div.drawer-title-text", "Pod: nginx-create-pod-test")
      })
    })
  })
})