import Vue from 'vue';
import userAvatarLink from '../../vue_shared/components/user_avatar/user_avatar_link.vue';
import eventHub from '../eventhub';

const Store = gl.issueBoards.BoardsStore;

window.gl = window.gl || {};
window.gl.issueBoards = window.gl.issueBoards || {};

gl.issueBoards.IssueCardInner = Vue.extend({
  props: {
    issue: {
      type: Object,
      required: true,
    },
    issueLinkBase: {
      type: String,
      required: true,
    },
    list: {
      type: Object,
      required: false,
      default: () => ({}),
    },
    rootPath: {
      type: String,
      required: true,
    },
    updateFilters: {
      type: Boolean,
      required: false,
      default: false,
    },
  },
  data() {
    return {
      limitBeforeCounter: 3,
      maxRender: 4,
      maxCounter: 99,
    };
  },
  components: {
    userAvatarLink,
  },
  computed: {
    numberOverLimit() {
      return this.issue.assignees.length - this.limitBeforeCounter;
    },
    assigneeCounterTooltip() {
      return `${this.assigneeCounterLabel} more`;
    },
    assigneeCounterLabel() {
      if (this.numberOverLimit > this.maxCounter) {
        return `${this.maxCounter}+`;
      }

      return `+${this.numberOverLimit}`;
    },
    shouldRenderCounter() {
      if (this.issue.assignees.length <= this.maxRender) {
        return false;
      }

      return this.issue.assignees.length > this.numberOverLimit;
    },
    cardUrl() {
      return `${this.issueLinkBase}/${this.issue.iid}`;
    },
    issueId() {
      if (this.issue.iid) {
        return `#${this.issue.iid}`;
      }
      return false;
    },
    showLabelFooter() {
      return this.issue.labels.find(l => this.showLabel(l)) !== undefined;
    },
  },
  methods: {
    isIndexLessThanlimit(index) {
      return index < this.limitBeforeCounter;
    },
    shouldRenderAssignee(index) {
      // Eg. maxRender is 4,
      // Render up to all 4 assignees if there are only 4 assigness
      // Otherwise render up to the limitBeforeCounter
      if (this.issue.assignees.length <= this.maxRender) {
        return index < this.maxRender;
      }

      return index < this.limitBeforeCounter;
    },
    assigneeUrl(assignee) {
      return `${this.rootPath}${assignee.username}`;
    },
    assigneeUrlTitle(assignee) {
      return `Assigned to ${assignee.name}`;
    },
    avatarUrlTitle(assignee) {
      return `Avatar for ${assignee.name}`;
    },
    showLabel(label) {
      if (!label.id) return false;
      return true;
    },
    filterByLabel(label, e) {
      if (!this.updateFilters) return;

      const filterPath = gl.issueBoards.BoardsStore.filter.path.split('&');
      const labelTitle = encodeURIComponent(label.title);
      const param = `label_name[]=${labelTitle}`;
      const labelIndex = filterPath.indexOf(param);
      $(e.currentTarget).tooltip('hide');

      if (labelIndex === -1) {
        filterPath.push(param);
      } else {
        filterPath.splice(labelIndex, 1);
      }

      gl.issueBoards.BoardsStore.filter.path = filterPath.join('&');

      Store.updateFiltersUrl();

      eventHub.$emit('updateTokens');
    },
    labelStyle(label) {
      return {
        backgroundColor: label.color,
        color: label.textColor,
      };
    },
  },
  template: `
    <div>
      <div class="card-header">
        <h4 class="card-title">
          <i
            class="fa fa-eye-slash confidential-icon"
            v-if="issue.confidential"
            aria-hidden="true"
          />
          <a
            class="js-no-trigger"
            :href="cardUrl"
            :title="issue.title">{{ issue.title }}</a>
          <span
            class="card-number"
            v-if="issueId"
          >
            {{ issueId }}
          </span>
        </h4>
        <div class="card-assignee">
          <user-avatar-link
            v-for="(assignee, index) in issue.assignees"
            :key="assignee.id"
            v-if="shouldRenderAssignee(index)"
            class="js-no-trigger"
            :link-href="assigneeUrl(assignee)"
            :img-alt="avatarUrlTitle(assignee)"
            :img-src="assignee.avatar"
            :tooltip-text="assigneeUrlTitle(assignee)"
            tooltip-placement="bottom"
          />
          <span
            class="avatar-counter has-tooltip"
            :title="assigneeCounterTooltip"
            v-if="shouldRenderCounter"
          >
           {{ assigneeCounterLabel }}
          </span>
        </div>
      </div>
      <div
        class="card-footer"
        v-if="showLabelFooter"
      >
        <button
          class="label color-label has-tooltip"
          v-for="label in issue.labels"
          type="button"
          v-if="showLabel(label)"
          @click="filterByLabel(label, $event)"
          :style="labelStyle(label)"
          :title="label.description"
          data-container="body">
          {{ label.title }}
        </button>
      </div>
    </div>
  `,
});
