<script>
import { isEmpty } from 'lodash';
import CiIcon from '~/vue_shared/components/ci_icon.vue';
import { __ } from '../../locale';
import { GlSprintf, GlLink } from '@gitlab/ui';

export default {
  creatingEnvironment: 'creating',
  components: {
    CiIcon,
    GlSprintf,
    GlLink,
  },
  props: {
    deploymentStatus: {
      type: Object,
      required: true,
    },
    deploymentCluster: {
      type: Object,
      required: false,
      default: null,
    },
    iconStatus: {
      type: Object,
      required: true,
    },
  },
  computed: {
    environment() {
      switch (this.deploymentStatus.status) {
        case 'last':
          return this.lastEnvironmentMessage();
        case 'out_of_date':
          return this.outOfDateEnvironmentMessage();
        case 'failed':
          return this.failedEnvironmentMessage();
        case this.$options.creatingEnvironment:
          return this.creatingEnvironmentMessage();
        default:
          return '';
      }
    },
    environmentLink() {
      if (this.hasEnvironment) {
        return {
          link: this.deploymentStatus.environment.environment_path,
          name: this.deploymentStatus.environment.name,
        };
      }
      return {};
    },
    hasLastDeployment() {
      return this.hasEnvironment && this.deploymentStatus.environment.last_deployment;
    },
    lastDeployment() {
      return this.hasLastDeployment ? this.deploymentStatus.environment.last_deployment : {};
    },
    hasEnvironment() {
      return !isEmpty(this.deploymentStatus.environment);
    },
    lastDeploymentPath() {
      return !isEmpty(this.lastDeployment.deployable)
        ? this.lastDeployment.deployable.build_path
        : '';
    },
    hasCluster() {
      return Boolean(this.deploymentCluster) && Boolean(this.deploymentCluster.name);
    },
    clusterNameOrLink() {
      if (!this.hasCluster) {
        return '';
      }

      const { name, path } = this.deploymentCluster;

      return {
        path,
        name,
      };
    },
    kubernetesNamespace() {
      return this.hasCluster ? this.deploymentCluster.kubernetes_namespace : null;
    },
    deploymentLink() {
      return {
        path: this.lastDeploymentPath,
        name:
          this.deploymentStatus.status === this.$options.creatingEnvironment
            ? __('latest deployment')
            : __('most recent deployment'),
      };
    },
  },
  methods: {
    failedEnvironmentMessage() {
      return __('The deployment of this job to %{environmentLink} did not succeed.');
    },
    lastEnvironmentMessage() {
      if (this.hasCluster) {
        if (this.kubernetesNamespace) {
          return __(
            'This job is deployed to %{environmentLink} using cluster %{clusterNameOrLink} and namespace %{kubernetesNamespace}.',
          );
        }
        // we know the cluster but not the namespace
        return __('This job is deployed to %{environmentLink} using cluster %{clusterNameOrLink}.');
      }
      // not a cluster deployment
      return __('This job is deployed to %{environmentLink}.');
    },
    outOfDateEnvironmentMessage() {
      if (this.hasLastDeployment) {
        if (this.hasCluster) {
          if (this.kubernetesNamespace) {
            return __(
              'This job is an out-of-date deployment to %{environmentLink} using cluster %{clusterNameOrLink} and namespace %{kubernetesNamespace}. View the %{deploymentLink}.',
            );
          }
          // we know the cluster but not the namespace
          return __(
            'This job is an out-of-date deployment to %{environmentLink} using cluster %{clusterNameOrLink}. View the %{deploymentLink}.',
          );
        }
        // not a cluster deployment
        return __(
          'This job is an out-of-date deployment to %{environmentLink}. View the %{deploymentLink}.',
        );
      }
      // no last deployment, i.e. this is the first deployment
      if (this.hasCluster) {
        if (this.kubernetesNamespace) {
          return __(
            'This job is an out-of-date deployment to %{environmentLink} using cluster %{clusterNameOrLink} and namespace %{kubernetesNamespace}.',
          );
        }
        // we know the cluster but not the namespace
        return __(
          'This job is an out-of-date deployment to %{environmentLink} using cluster %{clusterNameOrLink}.',
        );
      }
      // not a cluster deployment
      return __('This job is an out-of-date deployment to %{environmentLink}.');
    },
    creatingEnvironmentMessage() {
      if (this.hasLastDeployment) {
        if (this.hasCluster) {
          if (this.kubernetesNamespace) {
            return __(
              'This job is creating a deployment to %{environmentLink} using cluster %{clusterNameOrLink} and namespace %{kubernetesNamespace}. This will overwrite the %{deploymentLink}.',
            );
          }
          // we know the cluster but not the namespace
          return __(
            'This job is creating a deployment to %{environmentLink} using cluster %{clusterNameOrLink}. This will overwrite the %{deploymentLink}.',
          );
        }
        // not a cluster deployment
        return __(
          'This job is creating a deployment to %{environmentLink}. This will overwrite the %{deploymentLink}.',
        );
      }
      // no last deployment, i.e. this is the first deployment
      if (this.hasCluster) {
        if (this.kubernetesNamespace) {
          return __(
            'This job is creating a deployment to %{environmentLink} using cluster %{clusterNameOrLink} and namespace %{kubernetesNamespace}.',
          );
        }
        // we know the cluster but not the namespace
        return __(
          'This job is creating a deployment to %{environmentLink} using cluster %{clusterNameOrLink}.',
        );
      }
      // not a cluster deployment
      return __('This job is creating a deployment to %{environmentLink}.');
    },
  },
};
</script>
<template>
  <div class="gl-mt-3 gl-mb-3 js-environment-container">
    <div class="environment-information">
      <ci-icon :status="iconStatus" />
      <p class="inline gl-mb-0">
        <gl-sprintf :message="environment">
          <template #environmentLink>
            <gl-link
              v-if="hasEnvironment"
              :href="environmentLink.link"
              data-testid="job-environment-link"
              v-text="environmentLink.name"
            />
          </template>
          <template #clusterNameOrLink>
            <gl-link
              v-if="clusterNameOrLink.path"
              :href="clusterNameOrLink.path"
              data-testid="job-cluster-link"
              v-text="clusterNameOrLink.name"
            />
            <template v-else>{{ clusterNameOrLink.name }}</template>
          </template>
          <template #kubernetesNamespace>
            <template>{{ kubernetesNamespace }}</template>
          </template>
          <template #deploymentLink>
            <gl-link
              :href="deploymentLink.path"
              data-testid="job-deployment-link"
              v-text="deploymentLink.name"
            />
          </template>
        </gl-sprintf>
      </p>
    </div>
  </div>
</template>
