Add weight component to swimlanes board sidebar

It uses gitlab/ui to render the weight form and
doesn't fetch any data as the weight is provided
by the stored issue.

app/assets/javascripts/boards/components/sidebar/board_editable_item.vue

@@ -39,13 +39,15 @@ export default {
       this.$emit('open');
       window.addEventListener('click', this.collapseWhenOffClick);
     },
-    collapse() {
+    collapse({ emitEvent = true } = {}) {
       if (!this.edit) {
         return;
       }
 
       this.edit = false;
-      this.$emit('close');
+      if (emitEvent) {
+        this.$emit('close');
+      }
       window.removeEventListener('click', this.collapseWhenOffClick);
     },
   },

ee/app/assets/javascripts/boards/components/board_content_sidebar.vue

@@ -5,7 +5,9 @@ import { ISSUABLE } from '~/boards/constants';
 import { contentTop } from '~/lib/utils/common_utils';
 import IssuableAssignees from '~/sidebar/components/assignees/issuable_assignees.vue';
 import IssuableTitle from '~/boards/components/issuable_title.vue';
+import glFeatureFlagsMixin from '~/vue_shared/mixins/gl_feature_flags_mixin';
 import BoardSidebarEpicSelect from './sidebar/board_sidebar_epic_select.vue';
+import BoardSidebarWeightInput from './sidebar/board_sidebar_weight_input.vue';
 
 export default {
   headerHeight: `${contentTop()}px`,
@@ -14,7 +16,9 @@ export default {
     GlDrawer,
     IssuableTitle,
     BoardSidebarEpicSelect,
+    BoardSidebarWeightInput,
   },
+  mixins: [glFeatureFlagsMixin()],
   computed: {
     ...mapGetters(['isSidebarOpen', 'getActiveIssue']),
     ...mapState(['sidebarType']),
@@ -42,6 +46,7 @@ export default {
     <template>
       <issuable-assignees :users="getActiveIssue.assignees" />
       <board-sidebar-epic-select />
+      <board-sidebar-weight-input v-if="glFeatures.issueWeights" />
     </template>
   </gl-drawer>
 </template>

ee/app/assets/javascripts/boards/components/sidebar/board_sidebar_weight_input.vue

+<script>
+import { mapGetters, mapActions } from 'vuex';
+import { GlButton, GlForm, GlFormInput } from '@gitlab/ui';
+import BoardEditableItem from '~/boards/components/sidebar/board_editable_item.vue';
+import autofocusonshow from '~/vue_shared/directives/autofocusonshow';
+import createFlash from '~/flash';
+import { __ } from '~/locale';
+
+export default {
+  components: {
+    BoardEditableItem,
+    GlForm,
+    GlButton,
+    GlFormInput,
+  },
+  directives: {
+    autofocusonshow,
+  },
+  data() {
+    return {
+      weight: null,
+      loading: false,
+    };
+  },
+  computed: {
+    ...mapGetters({ issue: 'getActiveIssue' }),
+    hasWeight() {
+      return this.issue.weight > 0;
+    },
+    projectPath() {
+      const { referencePath = '' } = this.issue;
+      return referencePath.slice(0, referencePath.indexOf('#'));
+    },
+  },
+  watch: {
+    issue: {
+      handler(updatedIssue) {
+        this.weight = updatedIssue.weight;
+      },
+      immediate: true,
+    },
+  },
+  methods: {
+    ...mapActions(['setActiveIssueWeight']),
+    handleFormSubmit() {
+      this.$refs.sidebarItem.collapse({ emitEvent: false });
+      this.setWeight();
+    },
+    async setWeight(provided) {
+      const weight = provided ?? this.weight;
+
+      if (this.loading || weight === this.issue.weight) {
+        return;
+      }
+
+      this.loading = true;
+
+      try {
+        await this.setActiveIssueWeight({ weight, projectPath: this.projectPath });
+        this.weight = weight;
+      } catch (e) {
+        this.weight = this.issue.weight;
+        createFlash({ message: __('An error occurred when updating the issue weight') });
+      } finally {
+        this.loading = false;
+      }
+    },
+  },
+};
+</script>
+
+<template>
+  <board-editable-item
+    ref="sidebarItem"
+    :title="__('Weight')"
+    :loading="loading"
+    @close="setWeight()"
+  >
+    <template v-if="hasWeight" #collapsed>
+      <div class="gl-display-flex gl-align-items-center">
+        <strong class="gl-text-gray-900">{{ issue.weight }}</strong>
+        <span class="gl-mx-2">-</span>
+        <gl-button
+          variant="link"
+          class="gl-text-gray-400!"
+          data-testid="reset-button"
+          :disabled="loading"
+          @click="setWeight(0)"
+        >
+          {{ __('remove weight') }}
+        </gl-button>
+      </div>
+    </template>
+    <template>
+      <gl-form @submit.prevent="handleFormSubmit()">
+        <gl-form-input
+          v-model.number="weight"
+          v-autofocusonshow
+          type="number"
+          min="0"
+          :placeholder="__('Enter a number')"
+        />
+      </gl-form>
+    </template>
+  </board-editable-item>
+</template>

ee/app/assets/javascripts/boards/queries/issue_set_weight.mutation.graphql

+mutation issueSetWeight($input: IssueSetWeightInput!) {
+  issueSetWeight(input: $input) {
+    issue {
+      weight
+    }
+    errors
+  }
+}

ee/app/assets/javascripts/boards/stores/actions.js

@@ -9,6 +9,7 @@ import { BoardType, ListType } from '~/boards/constants';
 import { EpicFilterType } from '../constants';
 import boardsStoreEE from './boards_store_ee';
 import * as types from './mutation_types';
+import * as typesCE from '~/boards/stores/mutation_types';
 import { fullEpicId } from '../boards_util';
 import { formatListIssues, formatListsPageInfo, fullBoardId } from '~/boards/boards_util';
 import { getIdFromGraphQLId } from '~/graphql_shared/utils';
@@ -17,6 +18,7 @@ import eventHub from '~/boards/eventhub';
 import createGqClient, { fetchPolicies } from '~/lib/graphql';
 import epicsSwimlanesQuery from '../queries/epics_swimlanes.query.graphql';
 import issueSetEpic from '../queries/issue_set_epic.mutation.graphql';
+import issueSetWeight from '../queries/issue_set_weight.mutation.graphql';
 import listsIssuesQuery from '~/boards/queries/lists_issues.query.graphql';
 import issueMoveListMutation from '../queries/issue_move_list.mutation.graphql';
 
@@ -267,6 +269,29 @@ export default {
     return data.issueSetEpic.issue.epic;
   },
 
+  setActiveIssueWeight: async ({ commit, getters }, input) => {
+    const { data } = await gqlClient.mutate({
+      mutation: issueSetWeight,
+      variables: {
+        input: {
+          iid: String(getters.getActiveIssue.iid),
+          weight: input.weight,
+          projectPath: input.projectPath,
+        },
+      },
+    });
+
+    if (!data.issueSetWeight || data.issueSetWeight?.errors?.length > 0) {
+      throw new Error(data.issueSetWeight?.errors);
+    }
+
+    commit(typesCE.UPDATE_ISSUE_BY_ID, {
+      issueId: getters.getActiveIssue.id,
+      prop: 'weight',
+      value: data.issueSetWeight.issue.weight,
+    });
+  },
+
   moveIssue: (
     { state, commit },
     { issueId, issueIid, issuePath, fromListId, toListId, moveBeforeId, moveAfterId, epicId },

ee/app/controllers/concerns/ee/boards_actions.rb

@@ -14,6 +14,7 @@ module EE
       # This is pushing a licensed Feature to the frontend.
       push_frontend_feature_flag(:wip_limits, type: :licensed, default_enabled: true) if parent.feature_available?(:wip_limits)
       push_frontend_feature_flag(:swimlanes, type: :licensed, default_enabled: true) if parent.feature_available?(:swimlanes)
+      push_frontend_feature_flag(:issue_weights, type: :licensed, default_enabled: true) if parent.feature_available?(:issue_weights)
     end
   end
 end

ee/spec/frontend/boards/components/board_content_sidebar_spec.js

@@ -19,6 +19,7 @@ describe('ee/BoardContentSidebar', () => {
       store,
       stubs: {
         'board-sidebar-epic-select': '<div></div>',
+        'board-sidebar-weight-input': '<div></div>',
       },
     });
   };

ee/spec/frontend/boards/components/sidebar/board_sidebar_weight_input_spec.js

+import { shallowMount } from '@vue/test-utils';
+import { GlFormInput, GlForm } from '@gitlab/ui';
+import BoardSidebarWeightInput from 'ee/boards/components/sidebar/board_sidebar_weight_input.vue';
+import BoardEditableItem from '~/boards/components/sidebar/board_editable_item.vue';
+import createFlash from '~/flash';
+import { createStore } from '~/boards/stores';
+
+const TEST_WEIGHT = 1;
+const TEST_ISSUE = { id: 'gid://gitlab/Issue/1', iid: 9, weight: 0, referencePath: 'h/b#2' };
+
+jest.mock('~/flash');
+
+describe('ee/boards/components/sidebar/board_sidebar_weight_input.vue', () => {
+  let wrapper;
+  let store;
+
+  afterEach(() => {
+    wrapper.destroy();
+    store = null;
+    wrapper = null;
+  });
+
+  const createWrapper = ({ weight = 0 } = {}) => {
+    store = createStore();
+    store.state.issues = { [TEST_ISSUE.id]: { ...TEST_ISSUE, weight } };
+    store.state.activeId = TEST_ISSUE.id;
+
+    wrapper = shallowMount(BoardSidebarWeightInput, {
+      store,
+      provide: {
+        canUpdate: true,
+      },
+      stubs: {
+        'board-editable-item': BoardEditableItem,
+      },
+    });
+  };
+
+  const findWeightForm = () => wrapper.find(GlForm);
+  const findWeightInput = () => wrapper.find(GlFormInput);
+  const findResetButton = () => wrapper.find('[data-testid="reset-button"]');
+  const findCollapsed = () => wrapper.find('[data-testid="collapsed-content"]');
+
+  it('renders "None" when no weight is selected', () => {
+    createWrapper();
+    expect(findCollapsed().text()).toBe('None');
+  });
+
+  it('renders weight with reset button when weight is set', () => {
+    createWrapper({ weight: TEST_WEIGHT });
+    expect(findCollapsed().text()).toContain(TEST_WEIGHT);
+    expect(findResetButton().exists()).toBe(true);
+  });
+
+  describe('when weight is submitted', () => {
+    beforeEach(async () => {
+      createWrapper();
+      jest.spyOn(wrapper.vm, 'setActiveIssueWeight');
+      findWeightInput().vm.$emit('input', TEST_WEIGHT);
+      findWeightForm().vm.$emit('submit', { preventDefault: () => {} });
+      store.state.issues[TEST_ISSUE.id].weight = TEST_WEIGHT;
+      await wrapper.vm.$nextTick();
+    });
+
+    it('collapses sidebar and renders weight with reset button', () => {
+      expect(findCollapsed().isVisible()).toBe(true);
+      expect(findCollapsed().text()).toContain(TEST_WEIGHT);
+      expect(findResetButton().exists()).toBe(true);
+    });
+
+    it('commits change to the server', () => {
+      expect(wrapper.vm.setActiveIssueWeight).toHaveBeenCalledWith({
+        weight: TEST_WEIGHT,
+        projectPath: 'h/b',
+      });
+    });
+  });
+
+  describe('when weight is set to 0', () => {
+    beforeEach(async () => {
+      createWrapper({ weight: TEST_WEIGHT });
+      jest.spyOn(wrapper.vm, 'setActiveIssueWeight');
+      findWeightInput().vm.$emit('input', 0);
+      findWeightForm().vm.$emit('submit', { preventDefault: () => {} });
+      store.state.issues[TEST_ISSUE.id].weight = 0;
+      await wrapper.vm.$nextTick();
+    });
+
+    it('collapses sidebar and renders "None"', () => {
+      expect(wrapper.vm.setActiveIssueWeight).toHaveBeenCalled();
+      expect(findCollapsed().isVisible()).toBe(true);
+      expect(findCollapsed().text()).toBe('None');
+    });
+  });
+
+  describe('when weight is resetted', () => {
+    beforeEach(async () => {
+      createWrapper({ weight: TEST_WEIGHT });
+      jest.spyOn(wrapper.vm, 'setActiveIssueWeight');
+      findResetButton().vm.$emit('click');
+      store.state.issues[TEST_ISSUE.id].weight = 0;
+      await wrapper.vm.$nextTick();
+    });
+
+    it('collapses sidebar and renders "None"', () => {
+      expect(wrapper.vm.setActiveIssueWeight).toHaveBeenCalled();
+      expect(findCollapsed().isVisible()).toBe(true);
+      expect(findCollapsed().text()).toBe('None');
+    });
+  });
+
+  describe('when the mutation fails', () => {
+    beforeEach(async () => {
+      createWrapper({ weight: TEST_WEIGHT });
+      jest.spyOn(wrapper.vm, 'setActiveIssueWeight').mockImplementation(() => {
+        throw new Error(['failed mutation']);
+      });
+      findWeightInput().vm.$emit('input', -1);
+      findWeightForm().vm.$emit('submit', { preventDefault: () => {} });
+      await wrapper.vm.$nextTick();
+    });
+
+    it('collapses sidebar and renders former issue weight', () => {
+      expect(findCollapsed().isVisible()).toBe(true);
+      expect(findCollapsed().text()).toContain(TEST_WEIGHT);
+      expect(createFlash).toHaveBeenCalled();
+    });
+  });
+});

ee/spec/frontend/boards/stores/actions_spec.js

@@ -4,6 +4,7 @@ import boardsStoreEE from 'ee/boards/stores/boards_store_ee';
 import actions, { gqlClient } from 'ee/boards/stores/actions';
 import * as types from 'ee/boards/stores/mutation_types';
 import testAction from 'helpers/vuex_action_helper';
+import * as typesCE from '~/boards/stores/mutation_types';
 import { ListType } from '~/boards/constants';
 import { formatListIssues } from '~/boards/boards_util';
 import {
@@ -390,6 +391,57 @@ describe('setActiveIssueEpic', () => {
   });
 });
 
+describe('setActiveIssueWeight', () => {
+  const state = { issues: { [mockIssue.id]: mockIssue } };
+  const getters = { getActiveIssue: mockIssue };
+  const testWeight = mockIssue.weight + 1;
+  const input = {
+    weight: testWeight,
+    projectPath: 'h/b',
+  };
+
+  it('should commit weight after setting the issue', done => {
+    jest.spyOn(gqlClient, 'mutate').mockResolvedValue({
+      data: {
+        issueSetWeight: {
+          issue: {
+            weight: testWeight,
+          },
+          errors: [],
+        },
+      },
+    });
+
+    const payload = {
+      issueId: getters.getActiveIssue.id,
+      prop: 'weight',
+      value: testWeight,
+    };
+
+    testAction(
+      actions.setActiveIssueWeight,
+      input,
+      { ...state, ...getters },
+      [
+        {
+          type: typesCE.UPDATE_ISSUE_BY_ID,
+          payload,
+        },
+      ],
+      [],
+      done,
+    );
+  });
+
+  it('throws error if fails', async () => {
+    jest
+      .spyOn(gqlClient, 'mutate')
+      .mockResolvedValue({ data: { issueSetWeight: { errors: ['failed mutation'] } } });
+
+    await expect(actions.setActiveIssueWeight({ getters }, input)).rejects.toThrow(Error);
+  });
+});
+
 describe('moveIssue', () => {
   const epicId = 'gid://gitlab/Epic/1';
 

spec/frontend/boards/components/sidebar/board_editable_item_spec.js

@@ -114,4 +114,16 @@ describe('boards sidebar remove issue', () => {
 
     expect(wrapper.emitted().open.length).toBe(1);
   });
+
+  it('does not emits events when collapsing with false `emitEvent`', async () => {
+    createComponent({ canUpdate: true });
+
+    findEditButton().vm.$emit('click');
+
+    await wrapper.vm.$nextTick();
+
+    wrapper.vm.collapse({ emitEvent: false });
+
+    expect(wrapper.emitted().close).toBeUndefined();
+  });
 });