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import {
isBefore,
isWithinInterval,
parseISO,
isWeekend,
differenceInWeeks,
isSameWeek,
} from 'date-fns'
import { getMutations, getValidator } from './index'
export const state = () => ({
grades: [],
})
const parseGradeDates = grade => ({
...grade,
added: parseISO(grade.added),
obtained_date: parseISO(grade.obtained),
})
export const getters = {
all: (state, getters) => getters.order(state.grades),
one: (state, getters) => (value, prop = 'uuid') =>
getters.all.find(o => o[prop] === value) || null,
of: (state, getters, rootState, rootGetters) => (
value,
what = 'trimester',
date = 'added'
) => {
switch (what) {
case 'trimester': {
let trimesterInterval
if (value === null) {
trimesterInterval = rootGetters['schedule/currentTrimester']
} else {
if (![1, 2, 3].includes(value)) return []
trimesterInterval = rootGetters['schedule/trimester'](value)
}
if (trimesterInterval === null) return []
// Gets all the grades that have been added within the `value`th trimester
return getters.all.filter(
o => o[date] && isWithinInterval(o[date], trimesterInterval)
)
}
case 'interval':
return getters.all.filter(
o => o[date] && isWithinInterval(o[date], value)
)
default:
return []
}
},
pending: (state, getters) => getters.all.filter(o => o.obtained === null),
order: (state, getters) => grades => {
// ↓ Makes a copy of grades to avoid mutating
return [...grades].sort(firstBy((o1, o2) => isBefore(o1, o2)))
},
format: (state, getters, rootState, rootGetters) => value => {
let unit = rootGetters['settings/value']('grade_max')
unit = unit === 100 ? '%' : `/${unit}`
return { value, unit }
},
mean: (state, getters) => (grades, debug = false) => {
let ret
grades = grades.filter(o => o.obtained !== null)
if (!grades.length) ret = null
else {
const sumOfWeights = grades
.map(o => o.weight * o.subject.weight)
.reduce((acc, cur) => acc + cur)
const sumOfGrades = grades
.map(o => o.obtained * o.weight * o.subject.weight)
.reduce((acc, cur) => acc + cur)
ret = sumOfGrades / sumOfWeights
}
return ret
},
evolution: (state, getters) => grades => {
/* Returns a number ∈ [0,1] that represents the relative gap between...
* - the old mean (mean before the latest grade), and
* - the new mean (mean with the latest grade)
*
* Effectively represents the relative evolution of the mean caused by the latest grade.
*/
// Just to be sure, sort the grades
// Also remove notes that have no `obtained` score (see `const oldMean = `) for why
grades = getters.order(grades).filter(o => !!o.obtained)
if (!grades.length) return null
// Get the current mean (w/ all the grades given)
const newMean = getters.mean(grades)
// Get the mean w/o the latest grade *that has been obtained*
// ↓ we use .slice, .pop would mutate *the state*, which… no.
const oldMean = getters.mean(grades.slice(0, -1))
// Classic relative gap formula
return (newMean - oldMean) / oldMean
},
currentTrimester: (state, getters, rootState, rootGetters) => {
return getters.of(rootGetters['schedule/currentTrimester'], 'trimester')
},
currentTrimesterMean: (state, getters, rootState, rootGetters) =>
getters.mean(getters.currentTrimester),
currentTrimesterEvolution: (state, getters, rootState, rootGetters) =>
getters.evolution(getters.currentTrimester),
display: (_, __, ___, rootGetters) => (
grade,
unit = null,
precision = 2,
abs = false
) => {
if (!grade && grade !== 0) return '—'
grade = abs ? ~~grade : grade
unit = unit || rootGetters['settings/value']('grade_max')
return (grade * unit).toFixed(precision).replace('.', ',')
},
absoluteUnit: (_, __, ___, rootGetters) => (value, unit = null) => {
unit = unit || rootGetters['settings/value']('grade_max')
return value / unit
},
formatUnit: (_, __, ___, rootGetters) => (value, unit = null) => {
unit = unit || rootGetters['settings/value']('grade_max')
return value * unit
},
meanOfDays: (state, getters, rootState, rootGetters) => (
start = null,
end = null
) => {
let grades
if (start && end) {
grades = getters.of({ start, end }, 'interval', 'obtained_date')
} else if (end === null) {
grades = getters.of(start, 'trimester', 'obtained_date')
} else {
grades = getters.of(null, 'trimester', 'obtained_date')
}
return getters.mean(grades)
},
ofWeekSmart: (_, { all }) =>
all.filter(o => {
const now = Date.now()
if (isWeekend(now)) return differenceInWeeks(o.added, now) === 1
else return isSameWeek(o.added, now)
}),
validate: getValidator({
constraints: {
maxLength: {
300: ['name'],
},
minimum: {
0: ['obtained', 'expected', 'goal', 'weight'],
1: ['unit'],
},
required: ['name', 'subject', 'weight', 'unit'],
},
/* We use custom constraints because the default error message
* is "should be less than 1", which does not coincide
* with the UI, which shows the "real", non-normalized grade
*/
customConstraints: [
{
message: 'La note obtenue est trop grande',
field: 'obtained',
constraint: (getters, object) =>
object.obtained === null || object.obtained <= 1,
},
{
message: 'La note estimée est trop grande',
field: 'expected',
constraint: (getters, object) =>
object.expected === null || object.expected <= 1,
},
{
message: "L'objectif de note est trop grand",
field: 'goal',
constraint: (getters, object) =>
object.goal === null || object.goal <= 1,
},
],
fieldNames: {
name: { gender: 'M', name: 'nom' },
obtained: { gender: 'F', name: 'note obtenue' },
expected: { gender: 'F', name: 'note estimée' },
goal: { gender: 'M', name: 'objectif de note' },
weight: { gender: 'M', name: 'coefficient' },
unit: { gender: 'F', name: 'unité' },
subject: { gender: 'F', name: 'matière' },
},
resourceName: { gender: 'F', name: 'note' },
}),
}
export const mutations = {
...getMutations('grade', parseGradeDates),
}
export const actions = {
async load({ commit, state }, force = false) {
if (!force && state.grades.length) return
try {
const { data } = await this.$axios.get(`/grades/`)
// console.log(`[from API] GET /grades/: OK`)
if (data) commit('SET', data)
} catch (error) {
// console.error(`[from API] GET /grades/: Error`)
try {
// console.error(error.response.data)
} catch (_) {
// eslint-disable-next-line
console.error(error)
}
}
},
async post({ commit, getters }, { grade, force }) {
force = force || false
if (!force) {
const validation = getters.validate(grade)
if (!validation.validated) return false
}
try {
grade.subject = grade.subject.uuid
const res = await this.$axios.post(`/grades/`, grade)
const { data } = this.$axios.get(`/grades/${res.data.uuid}`)
if (data) commit('ADD', data)
return true
} catch (error) {
// eslint-disable-next-line
console.error(error)
return false
}
},
async patch(
{ commit, dispatch, getters },
uuid,
modifications,
force = false
) {
if (!force) {
let grade = getters.one(uuid)
grade = { ...grade, ...modifications }
const validation = await dispatch('validate', grade)
if (!validation.validated) return validation
}
try {
const { data } = await this.$axios.patch(`/grades/${uuid}`, modifications)
if (data) commit('PATCH', uuid, data)
// console.log(`[from API] PATCH /grades/${uuid}: OK`)
} catch (error) {
// console.error(`[from API] PATCH /grades/${uuid}: Error`)
try {
// console.error(error.response.data)
} catch (_) {
// eslint-disable-next-line
console.error(error)
}
}
},
async delete({ commit }, uuid) {
try {
const { data } = await this.$axios.delete(`/grades/${uuid}`)
if (data) commit('DEL', uuid)
// console.log(`[from API] DELETE /grades/${uuid}: OK`)
} catch (error) {
// console.error(`[from API] DELETE /grades/${uuid}: Error`)
try {
// console.error(error.response.data)
} catch (_) {
// eslint-disable-next-line
console.error(error)
}
}
},
}
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