import { readFile } from 'fs'
import Papa from 'papaparse'


const travail = {
    namespaced: true,
    state() {
        return {
            empty: {
                caTheo: null, // ca théorique basé sur les séances effectuées
                sessionQty: null, // Nombre de séances effectuées sur le mois
                caRetro: null, // ca au moment de la rétrocession
                caReact: null, // ca réactualisé
                retro: 0, // montant de la rétrocession
                remuneration: 0, // rémunération décidée
                proPercentage: 50, // Pourcentage du CA pour la partie pro
            },
            months: {
            },
            range: {
                start: "2021-01",
                end: "2021-08",
            },
        }
    },
    getters: {
        TheEmptyMonth(state) { return { ...state.empty } },
        range(state) { return state.range },
        MonthsDate(state) {
            // Get months inside the range
            return Object.keys(state.months).filter(date => (date >= state.range.start) && (date <= state.range.end)).sort().reverse()
        },
        MonthsAllDate(state) {
            // Get all the months
            return Object.keys(state.months).sort().reverse()
        },
        lastMonthDate(state) {
            // Return the date of the last registered month
            return Object.keys(state.months).sort().reverse()[0]
        },
        months: (state, getters) => {
            // Get in range months
            const a = Object.keys(state.months)
                .filter(a => getters.MonthsDate.includes(a))
                .reduce((acc, v) => {
                    acc[v] = state.months[v];
                    return acc;
                }, {})
            return a
        },
        monthsAll: (state) => {
            // Get in range months
            return state.months
        },
        getMonth: (state) => (date) => {
            return state.months[date]
        },
        count: (state, getters) => { 
            // Amount of mounts
            return Object.keys(getters.months).length 
        },
    },
    mutations: {
        cleanMonths (state) {
            // erase months
            state.months = []
        },
        importMonths(state, months) {
            // overwrite months
            state.months = months
        },
        updateMonth(state, { date, month }) {
            state.months[date] = month
        },
        createMonth (state, { date, month }) {
            state.months[date] = month
        },
            setRange(state, range) {
        state.range = range
        }, 
    },
    actions: {
        cleanMonths (context) {
            context.commit("cleanMonths")
        },
        loadMonths (context) {
            // import all months from storage
            readFile(context.rootGetters["config/dataFilePath"], (err, data) => {
                if (err) throw err;
                const months = Papa.parse(data.toString(), {header: true, dynamicTyping:true, skipEmptyLines:true})
                    .data
                    .reduce(
                        (acc, el) => {
                            acc[el.date] = el;
                            return acc
                        }, {})
                context.commit("importMonths", months)
            })
        },
        updateMonth(context, { date, month }) {
            // update month's datas 
            if (date in context.state.months) {
                context.commit('updateMonth', { date, month })
            } else {
                console.log("This month does not exists")
            }
        },
        createMonth(context, { date, month }) {
            // Create a new month
            if (!(date in context.state.months)) {
                context.commit('createMonth', { date, month })
            } else {
                console.log("This month already exists")
            }
        },
        setRange(context, range) {
            context.commit("setRange", range)
        },
    },
}

export default travail