import { currentURL } from '@ember/test-helpers';
import { get } from '@ember/object';
import { module, test } from 'qunit';
import { setupApplicationTest } from 'ember-qunit';
import { setupMirage } from 'ember-cli-mirage/test-support';
import moment from 'moment';
import Deployments from 'nomad-ui/tests/pages/jobs/job/deployments';

const sum = (list, key, getter = a => a) =>
  list.reduce((sum, item) => sum + getter(get(item, key)), 0);

let job;
let deployments;
let sortedDeployments;

module('Acceptance | job deployments', function(hooks) {
  setupApplicationTest(hooks);
  setupMirage(hooks);

  hooks.beforeEach(function() {
    server.create('node');
    job = server.create('job');
    deployments = server.schema.deployments.where({ jobId: job.id });
    sortedDeployments = deployments.sort((a, b) => {
      const aVersion = server.db.jobVersions.findBy({ jobId: a.jobId, version: a.versionNumber });
      const bVersion = server.db.jobVersions.findBy({ jobId: b.jobId, version: b.versionNumber });
      if (aVersion.submitTime < bVersion.submitTime) {
        return 1;
      } else if (aVersion.submitTime > bVersion.submitTime) {
        return -1;
      }
      return 0;
    });
  });

  test('/jobs/:id/deployments should list all job deployments', async function(assert) {
    await Deployments.visit({ id: job.id });

    assert.ok(
      Deployments.deployments.length,
      deployments.length,
      'Each deployment gets a row in the timeline'
    );
    assert.equal(document.title, `Job ${job.name} deployments - Nomad`);
  });

  test('each deployment mentions the deployment shortId, status, version, and time since it was submitted', async function(assert) {
    await Deployments.visit({ id: job.id });

    const deployment = sortedDeployments.models[0];
    const version = server.db.jobVersions.findBy({
      jobId: deployment.jobId,
      version: deployment.versionNumber,
    });
    const deploymentRow = Deployments.deployments.objectAt(0);

    assert.ok(deploymentRow.text.includes(deployment.id.split('-')[0]), 'Short ID');
    assert.equal(deploymentRow.status, deployment.status, 'Status');
    assert.ok(
      deploymentRow.statusClass.includes(classForStatus(deployment.status)),
      'Status Class'
    );
    assert.ok(deploymentRow.version.includes(deployment.versionNumber), 'Version #');
    assert.ok(
      deploymentRow.submitTime.includes(moment(version.submitTime / 1000000).fromNow()),
      'Submit time ago'
    );
  });

  test('when the deployment is running and needs promotion, the deployment item says so', async function(assert) {
    // Ensure the deployment needs deployment
    const deployment = sortedDeployments.models[0];
    const taskGroupSummary = deployment.deploymentTaskGroupSummaryIds.map(id =>
      server.schema.deploymentTaskGroupSummaries.find(id)
    )[0];

    deployment.update('status', 'running');
    deployment.save();

    taskGroupSummary.update({
      desiredCanaries: 1,
      placedCanaries: [],
      promoted: false,
    });

    taskGroupSummary.save();

    await Deployments.visit({ id: job.id });

    const deploymentRow = Deployments.deployments.objectAt(0);
    assert.ok(deploymentRow.promotionIsRequired, 'Requires Promotion badge found');
  });

  test('each deployment item can be opened to show details', async function(assert) {
    await Deployments.visit({ id: job.id });

    const deploymentRow = Deployments.deployments.objectAt(0);
    assert.notOk(deploymentRow.hasDetails, 'No deployment body');

    await deploymentRow.toggle();
    assert.ok(deploymentRow.hasDetails, 'Deployment body found');
  });

  test('when open, a deployment shows the deployment metrics', async function(assert) {
    await Deployments.visit({ id: job.id });

    const deployment = sortedDeployments.models[0];
    const deploymentRow = Deployments.deployments.objectAt(0);
    const taskGroupSummaries = deployment.deploymentTaskGroupSummaryIds.map(id =>
      server.db.deploymentTaskGroupSummaries.find(id)
    );

    await deploymentRow.toggle();

    assert.equal(
      deploymentRow.metricFor('canaries').text,
      `${sum(taskGroupSummaries, 'placedCanaries', a => a.length)} / ${sum(
        taskGroupSummaries,
        'desiredCanaries'
      )}`,
      'Canaries, both places and desired, are in the metrics'
    );

    assert.equal(
      deploymentRow.metricFor('placed').text,
      sum(taskGroupSummaries, 'placedAllocs'),
      'Placed allocs aggregates across task groups'
    );

    assert.equal(
      deploymentRow.metricFor('desired').text,
      sum(taskGroupSummaries, 'desiredTotal'),
      'Desired allocs aggregates across task groups'
    );

    assert.equal(
      deploymentRow.metricFor('healthy').text,
      sum(taskGroupSummaries, 'healthyAllocs'),
      'Healthy allocs aggregates across task groups'
    );

    assert.equal(
      deploymentRow.metricFor('unhealthy').text,
      sum(taskGroupSummaries, 'unhealthyAllocs'),
      'Unhealthy allocs aggregates across task groups'
    );

    assert.equal(
      deploymentRow.notification,
      deployment.statusDescription,
      'Status description is in the metrics block'
    );
  });

  test('when open, a deployment shows a list of all task groups and their respective stats', async function(assert) {
    await Deployments.visit({ id: job.id });

    const deployment = sortedDeployments.models[0];
    const deploymentRow = Deployments.deployments.objectAt(0);
    const taskGroupSummaries = deployment.deploymentTaskGroupSummaryIds.map(id =>
      server.db.deploymentTaskGroupSummaries.find(id)
    );

    await deploymentRow.toggle();

    assert.ok(deploymentRow.hasTaskGroups, 'Task groups found');

    assert.equal(
      deploymentRow.taskGroups.length,
      taskGroupSummaries.length,
      'One row per task group'
    );

    const taskGroup = taskGroupSummaries[0];
    const taskGroupRow = deploymentRow.taskGroups.objectAt(0);

    assert.equal(taskGroupRow.name, taskGroup.name, 'Name');
    assert.equal(taskGroupRow.promotion, promotionTestForTaskGroup(taskGroup), 'Needs Promotion');
    assert.equal(taskGroupRow.autoRevert, taskGroup.autoRevert ? 'Yes' : 'No', 'Auto Revert');
    assert.equal(
      taskGroupRow.canaries,
      `${taskGroup.placedCanaries.length} / ${taskGroup.desiredCanaries}`,
      'Canaries'
    );
    assert.equal(
      taskGroupRow.allocs,
      `${taskGroup.placedAllocs} / ${taskGroup.desiredTotal}`,
      'Allocs'
    );
    assert.equal(taskGroupRow.healthy, taskGroup.healthyAllocs, 'Healthy Allocs');
    assert.equal(taskGroupRow.unhealthy, taskGroup.unhealthyAllocs, 'Unhealthy Allocs');
    assert.equal(
      taskGroupRow.progress,
      moment(taskGroup.requireProgressBy).format("MMM DD, 'YY HH:mm:ss ZZ"),
      'Progress By'
    );
  });

  test('when open, a deployment shows a list of all allocations for the deployment', async function(assert) {
    await Deployments.visit({ id: job.id });

    const deployment = sortedDeployments.models[0];
    const deploymentRow = Deployments.deployments.objectAt(0);

    // TODO: Make this less brittle. This logic is copied from the mirage config,
    // since there is no reference to allocations on the deployment model.
    const allocations = server.db.allocations.where({ jobId: deployment.jobId }).slice(0, 3);
    await deploymentRow.toggle();

    assert.ok(deploymentRow.hasAllocations, 'Allocations found');
    assert.equal(deploymentRow.allocations.length, allocations.length, 'One row per allocation');

    const allocation = allocations[0];
    const allocationRow = deploymentRow.allocations.objectAt(0);

    assert.equal(allocationRow.shortId, allocation.id.split('-')[0], 'Allocation is as expected');
  });

  test('when the job for the deployments is not found, an error message is shown, but the URL persists', async function(assert) {
    await Deployments.visit({ id: 'not-a-real-job' });

    assert.equal(
      server.pretender.handledRequests
        .filter(request => !request.url.includes('policy'))
        .findBy('status', 404).url,
      '/v1/job/not-a-real-job',
      'A request to the nonexistent job is made'
    );
    assert.equal(currentURL(), '/jobs/not-a-real-job/deployments', 'The URL persists');
    assert.ok(Deployments.error.isPresent, 'Error message is shown');
    assert.equal(Deployments.error.title, 'Not Found', 'Error message is for 404');
  });

  function classForStatus(status) {
    const classMap = {
      running: 'is-running',
      successful: 'is-primary',
      paused: 'is-light',
      failed: 'is-error',
      cancelled: 'is-cancelled',
    };

    return classMap[status] || 'is-dark';
  }

  function promotionTestForTaskGroup(taskGroup) {
    if (taskGroup.desiredCanaries > 0 && taskGroup.promoted === false) {
      return 'Yes';
    } else if (taskGroup.desiredCanaries > 0) {
      return 'No';
    }
    return 'N/A';
  }
});