All files / store bag.js

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import { endOfDay, startOfDay, addDays } from 'date-fns'
import uniqBy from 'lodash.uniqby'
 
export const store = () => ({})
 
export const getters = {
  _subjects: (state, getters, rootState, rootGetters) => (today = null) => {
    // Get days
    today = today || rootState.now
    const tomorrow = addDays(today, 1)
    // Get courses for theses days
    const todayCourses = rootGetters['schedule/coursesIn'](
      startOfDay(today),
      endOfDay(today)
    )
    const tomorrowCourses = rootGetters['schedule/coursesIn'](
      startOfDay(tomorrow),
      endOfDay(tomorrow)
    )
    // Get subjects of theses courses
    let todaySubjects = todayCourses.map(o => o.subject)
    let tomorrowSubjects = tomorrowCourses.map(o => o.subject)
    // Remove duplicate subjects
    todaySubjects = uniqBy(todaySubjects, 'uuid')
    tomorrowSubjects = uniqBy(tomorrowSubjects, 'uuid')
    // Return both arrays
    return {
      todaySubjects,
      tomorrowSubjects,
    }
  },
  toAdd: (state, getters) => (today = null) => {
    /* Gets the subjects that are not present in today's courses
     * but are present in tomorrow's courses.
     */
    // Get subjects
    const { todaySubjects, tomorrowSubjects } = getters._subjects(today)
    // Get an array of UUIDs to check agains
    const todayUUIDs = todaySubjects.map(o => o.uuid)
    // Keep only tomorrow's subjects if their UUIDs are not in today's UUIDs.
    return tomorrowSubjects.filter(o => !todayUUIDs.includes(o.uuid))
  },
  toRemove: (state, getters) => (today = null) => {
    // Get subjects
    const { todaySubjects, tomorrowSubjects } = getters._subjects(today)
    // Get an array of UUIDs to check agains
    const tomorrowUUIDs = tomorrowSubjects.map(o => o.uuid)
    // Keep only today's subjects if their UUIDs are not in tomorrow's UUIDs.
    return todaySubjects.filter(o => !tomorrowUUIDs.includes(o.uuid))
  },
}