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+import logo from './logo.svg';
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+import './App.scss';
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+import thunk from 'redux-thunk';
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+import {createStore, combineReducers, applyMiddleware} from 'redux';
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+import {Provider, connect} from 'react-redux';
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+
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+
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+const actionPending = name => ({type: 'PROMISE', status: 'PENDING', name})
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+const actionResolved = (name, payload) => ({type: 'PROMISE', status: 'RESOLVED', name, payload})
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+const actionRejected = (name, error) => ({type: 'PROMISE', status: 'REJECTED', name, error})
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+
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+const actionPromise = (name, promise) =>
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+ async dispatch => {
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+ dispatch(actionPending(name)) // 1. {delay1000: {status: 'PENDING'}}
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+ try{
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+ let payload = await promise
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+ dispatch(actionResolved(name, payload))
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+ return payload
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+ }
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+ catch(error){
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+ dispatch(actionRejected(name, error))
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+ }
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+ }
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+
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+const getGQL = url =>
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+ (query, variables = {}) =>
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+ fetch(url, {
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+ //метод
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+ method: 'POST',
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+ headers: {
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+ //заголовок content-type
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+ "Content-Type": "application/json",
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+ ...(localStorage.authToken ? { "Authorization": "Bearer " + localStorage.authToken } :
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+ {})
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+ },
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+ //body с ключами query и variables
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+ body: JSON.stringify({ query, variables })
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+ })
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+ .then(res => res.json())
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+ .then(data => {
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+ if (data.errors && !data.data)
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+ throw new Error(JSON.stringify(data.errors))
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+ return data.data[Object.keys(data.data)[0]]
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+ })
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+
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+const backendURL = "http://shop-roles.asmer.fs.a-level.com.ua"
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+const gql = getGQL(backendURL + '/graphql')
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+
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+function jwtDecode(token) {
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+ try {
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+ let decoded = token.split('.')
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+ decoded = decoded[1]
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+ decoded = atob(decoded)
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+ decoded = JSON.parse(decoded)
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+ return decoded
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+
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+ } catch (e) {
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+ return;
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+ }
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+}
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+
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+
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+const actionRootCats = () =>
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+ actionPromise('rootCats', gql(`query {
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+ CategoryFind(query: "[{\\"parent\\":null}]"){
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+ _id name
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+ }
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+ }`))
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+
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+
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+const actionCartAdd = (good, count = 1) => ({ type: 'CART_ADD', good, count })
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+const actionCartRemove = (good, count = 1) => ({ type: 'CART_REMOVE', good, count })
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+const actionCartChange = (good, count = 1) => ({ type: 'CART_CHANGE', good, count })
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+const actionCartClear = (good, count = 1) => ({ type: 'CART_CLEAR', good, count })
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+
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+function cartReducer(state = {}, { type, good={}, count=1}){
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+ //{
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+ // _id1: {good, count}
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+ // _id2: {good, count}
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+ //}
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+ const {_id } = good
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+ const types = {
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+ CART_ADD() {
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+ //как CHANGE, только если ключ раньше был, то достать из него count и добавить
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+ //к count из action. Если не было, достать 0 и добавить к count из action
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+ return {
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+ ...state,
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+ [_id]: { good, count: count + (state[_id]?.count || 0)}
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+ }
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+ },
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+ CART_REMOVE(){ //смочь скопировать объект и выкинуть ключ. как вариант через
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+ //деструктуризацию
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+ let newState = { ...state }
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+ delete newState[_id]
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+ return {
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+ ...newState
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+ }
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+ },
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+ CART_CHANGE(){
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+ return {
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+ ...state, //по аналогии с promiseReducer дописать
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+ [_id]:{good, count}
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+ }
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+ },
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+ CART_CLEAR(){
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+ return {}
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+ },
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+ }
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+
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+ if (type in types)
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+ return types[type]()
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+
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+
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+ return state
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+}
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+
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+function authReducer(state, {type, token}){
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+ if (!state) {
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+ if (localStorage.authToken) {
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+ type = 'AUTH_LOGIN'
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+ token = localStorage.authToken
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+ } else {
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+ return {}
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+ }
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+ //проверить localStorage.authToken на наличие
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+ //если есть - сделать так, что бы следующий if сработал
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+ //если нет - вернуть {}
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+ }
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+ if (type === 'AUTH_LOGIN') {
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+ let auth = jwtDecode(token)
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+ if (auth) {
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+ localStorage.authToken = token
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+ return { token, payload: auth }
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+ }
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+ //взять токен из action
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+ //попытаться его jwtDecode
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+ //если удалось, то:
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+ //сохранить токен в localStorage
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+ //вернуть объект вида {токен, payload: раскодированный токен}
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+ }
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+ if (type === 'AUTH_LOGOUT') {
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+ localStorage.authToken = ''
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+ return {}
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+ //почистить localStorage
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+ //вернуть пустой объект
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+ }
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+
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+ return state
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+}
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+
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+function promiseReducer(state={}, {type, name, status, payload, error}){
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+ //{
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+ // login: {status, payload, error}
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+ // catById: {status, payload, error}
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+ //}
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+ if (type === 'PROMISE'){
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+ return {
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+ ...state,
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+ [name]:{status, payload, error}
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+ }
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+ }
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+ return state
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+}
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+
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+// Actions =============================
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+// Логин и логаут
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+const actionAuthLogin = (token) => ({ type: 'AUTH_LOGIN', token })
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+const actionAuthLogout = () => ({ type: 'AUTH_LOGOUT' })
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+
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+const actionLogin = (login = 'tst', password = '123') =>
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+ actionPromise('login', gql(`query ($login:String, $password:String){ login(login:$login, password:$password)}`, { 'login': login, 'password': password }))
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+
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+const actionFullLogin = (login = 'tst', password = '123') =>
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+ async dispatch => {
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+ let token = await dispatch(actionLogin(login, password))
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+ if (token) {
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+ dispatch(actionAuthLogin(token))
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+ }
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+ }
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+
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+// Регистрация
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+const actionRegister = (login = 'tst', password = '123') =>
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+ actionPromise('login', gql(`mutation reg($login:String, $password:String) {
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+ UserUpsert(user:{login:$login, password:$password, nick:$login}){
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+ _id login
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+ }
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+ }`, { 'login': login, 'password': password }))
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+
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+const actionFullRegister = (login = 'tst', password = '123') =>
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+ async dispatch => {
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+ await dispatch(actionRegister(login, password))
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+ await dispatch(actionFullLogin(login, password))
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+ }
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+
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+// Корневые категории
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+
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+// Товары категории
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+const actionCatById = (_id) =>
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+ actionPromise('catById', gql(`query ($q: String){
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+ CategoryFindOne(query: $q){
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+ _id name goods {
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+ _id name price images {
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+ url
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+ }
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+ }
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+ subCategories {
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+ _id name
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+ }
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+ }
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+ }`, { q: JSON.stringify([{ _id }]) }))
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+
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+const actionGoodById = (_id) =>
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+ actionPromise('goodById', gql(`query ($good:String) {
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+ GoodFindOne(query:$good) {
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+ _id name price images {
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+ url
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+ }
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+ }
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+ }`, { good: JSON.stringify([{ _id }]) }))
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+
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+
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+
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+const store = createStore(combineReducers({promise: promiseReducer,
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+ auth: authReducer,
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+ cart: cartReducer}), applyMiddleware(thunk))
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+store.subscribe(() => console.log(store.getState()))
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+store.dispatch(actionRootCats())
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+store.dispatch(actionCatById('5dc458985df9d670df48cc47'))
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+
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+
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+const Logo = () =>
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+<img src={logo} className="Logo" alt="logo" />
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+
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+const Header = () =>
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+<header>
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+ <Logo />
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+ <CKoshik />
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+</header>
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+
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+const CategoryListItem = ({_id, name}) =>
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+<li><a href={`#/category/${_id}`}>{name}</a></li>
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+
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+const CategoryList = ({cats}) =>
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+<ul>
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+ {cats.map((item) => <CategoryListItem {...item} />)}
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+</ul>
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+
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+const CCategoryList = connect(state => ({cats:state.promise.rootCats?.payload || []}))
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+ (CategoryList)
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+
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+const Aside = () =>
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+<aside className='aside'>
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+ <CCategoryList />
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+</aside>
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+
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+const GoodCard = ({good:{_id, name, price, images}, onAdd}) =>
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+<li className='GoodCard'>
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+ <h2>{name}</h2>
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+ {images && images[0] && images[0].url && <img src={backendURL + '/' + images[0].url} />}
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+ <strong>{price}</strong>
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+ <button onClick={() => onAdd({_id, name, price, images})}>+</button>
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+</li>
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+
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+const CGoodCard = connect(null, {onAdd: actionCartAdd})(GoodCard)
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+
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+const Koshik = ({cart}) => {
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+ let goodsInCart = cart
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+ let allGoodsInCart = 0
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+ for (let key in goodsInCart) {
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+ allGoodsInCart += goodsInCart[key].count
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+ }
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+ return (
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+ <h2>{allGoodsInCart}</h2>
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+ )
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+}
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+
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+const CKoshik = connect(({cart}) => ({cart}))(Koshik)
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+
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+
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+const Category = ({cat:{name, goods=[]}={}}) =>
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+<div className='Category'>
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+ <h1>{name}</h1>
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+ <ul>
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+ {goods.map(good => <CGoodCard good={good} />)}
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+ </ul>
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+</div>
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+
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+const CCategory = connect(state => ({cat:state.promise.catById?.payload || {}}))
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+ (Category)
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+
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+ // {` нарисовать страницу корзины , по изменению в input <input onChange={() => onCartChange(...)}
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+ // по кнопке удалить <button onClick={() => onCartRemove(....)}`}
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+ // ТУТ БУДЕТ КОРЗИНА
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+
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+const Cart = ({cart = {}, onCartChange, onCartRemove}) =>{
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+
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+ let goodsInCart = Object.values(cart)
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+ return (
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+ <div> {console.log('cart',cart), console.log('',)}
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+ <h1> КОРЗИНА</h1>
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+ <ul>
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+ {goodsInCart.map(item => {
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+ let {good, good: {_id, name, price, images: [{url}]}, count} = item;
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+ return (
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+ <li key = { _id}>
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+ <h2>{name}</h2>
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+ <img src={backendURL + '/' + url} />
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+ <p>Количество{count}</p>
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+ <strong>{price}$</strong>
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+ <input type="number" min="1" onChange = {(e) => onCartChange(good, e.target.value)}></input>
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+ <button onClick={() => onCartRemove(good,count)}>Удалить</button>
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+ </li>)
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+ } )}
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+ </ul>
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+
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+ </div>
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+ )
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+}
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+
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+ //const CCart = connect(забрать из редакса корзину положить в пропс cart,
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+ //дать компоненту onCartChange и onCartRemove с соответствующими actionCreator)(Cart)
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+
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+const CCart = connect(state => (
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+ {cart: state.cart }),
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+ {onCartChange: actionCartChange,
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+ onCartRemove:actionCartRemove})(Cart)
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+
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+const Main = () =>
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+<main>
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+ <Aside />
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+ <Content>
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+ <Category cat={{name: 'ЗАГЛУШКА'}} />
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+ <CCategory />
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+ <CCart/>
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+
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+ </Content>
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+</main>
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+
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+const Content = ({children}) =>
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+<div className="Content">
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+ {children}
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+</div>
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+
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+const Footer = () =>
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+<footer>
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+ <Logo />
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+</footer>
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+
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+
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+function App() {
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+ return (
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+ <Provider store={store}>
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+ <div className="App">
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+ <Header />
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+ <Main />
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+ <Footer />
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+ </div>
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+ </Provider>
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+ );
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+}
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+
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+export default App;
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