frontend/src/store/modules/tasks.js

import TaskService from '../../services/task'
import TaskAssigneeService from '../../services/taskAssignee'
import TaskAssigneeModel from '../../models/taskAssignee'
import LabelTaskModel from '../../models/labelTask'
import LabelTaskService from '../../services/labelTask'

export default {
	namespaced: true,
	state: () => ({}),
	actions: {
		update(ctx, task) {
			const taskService = new TaskService()
			return taskService.update(task)
				.then(t => {
					ctx.commit('kanban/setTaskInBucket', t, {root: true})
					return Promise.resolve(t)
				})
				.catch(e => {
					return Promise.reject(e)
				})
		},
		// Adds a task attachment in store.
		// This is an action to be able to commit other mutations
		addTaskAttachment(ctx, {taskId, attachment}) {
			const t = ctx.rootGetters['kanban/getTaskById'](taskId)
			if (t.task === null) {
				return
			}
			t.task.attachments.push(attachment)
			ctx.commit('kanban/setTaskInBucketByIndex', t, {root: true})
		},
		addAssignee(ctx, {user, taskId}) {

			const taskAssignee = new TaskAssigneeModel({userId: user.id, taskId: taskId})
			const taskAssigneeService = new TaskAssigneeService()

			return taskAssigneeService.create(taskAssignee)
				.then(r => {
					const t = ctx.rootGetters['kanban/getTaskById'](taskId)
					if (t.task === null) {
						return Promise.reject('Task not found.')
					}
					t.task.assignees.push(user)
					ctx.commit('kanban/setTaskInBucketByIndex', t, {root: true})
					return Promise.resolve(r)
				})
				.catch(e => {
					return Promise.reject(e)
				})
		},
		removeAssignee(ctx, {user, taskId}) {

			const taskAssignee = new TaskAssigneeModel({userId: user.id, taskId: taskId})
			const taskAssigneeService = new TaskAssigneeService()

			return taskAssigneeService.delete(taskAssignee)
				.then(r => {
					const t = ctx.rootGetters['kanban/getTaskById'](taskId)
					if (t.task === null) {
						return Promise.reject('Task not found.')
					}

					for (const a in t.task.assignees) {
						if (t.task.assignees[a].id === user.id) {
							t.task.assignees.splice(a, 1)
							break
						}
					}

					ctx.commit('kanban/setTaskInBucketByIndex', t, {root: true})
					return Promise.resolve(r)
				})
				.catch(e => {
					return Promise.reject(e)
				})

		},
		addLabel(ctx, {label, taskId}) {

			const labelTaskService = new LabelTaskService()
			const labelTask = new LabelTaskModel({taskId: taskId, labelId: label.id})

			return labelTaskService.create(labelTask)
				.then(r => {
					const t = ctx.rootGetters['kanban/getTaskById'](taskId)
					if (t.task === null) {
						return Promise.reject('Task not found.')
					}
					t.task.labels.push(label)
					ctx.commit('kanban/setTaskInBucketByIndex', t, {root: true})

					return Promise.resolve(r)
				})
				.catch(e => {
					return Promise.reject(e)
				})
		},
		removeLabel(ctx, {label, taskId}) {

			const labelTaskService = new LabelTaskService()
			const labelTask = new LabelTaskModel({taskId: taskId, labelId: label.id})

			return labelTaskService.delete(labelTask)
				.then(r => {
					const t = ctx.rootGetters['kanban/getTaskById'](taskId)
					if (t.task === null) {
						return Promise.reject('Task not found.')
					}

					// Remove the label from the list
					for (const l in t.task.labels) {
						if (t.task.labels[l].id === label.id) {
							t.task.labels.splice(l, 1)
							break
						}
					}

					ctx.commit('kanban/setTaskInBucketByIndex', t, {root: true})

					return Promise.resolve(r)
				})
				.catch(e => {
					return Promise.reject(e)
				})
		},
	},
}