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@@ -0,0 +1,190 @@
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+function createStore(reducer) {
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+ let state = reducer(undefined, {}) //стартовая инициализация состояния, запуск редьюсера со state === undefined
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+ let cbs = [] //массив подписчиков
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+
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+ const getState = () => state //функция, возвращающая переменную из замыкания
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+ const subscribe = cb => (cbs.push(cb), //запоминаем подписчиков в массиве
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+ () => cbs = cbs.filter(c => c !== cb)) //возвращаем функцию unsubscribe, которая удаляет подписчика из списка
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+
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+ const dispatch = action => {
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+ if (typeof action === 'function') { //если action - не объект, а функция
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+ return action(dispatch, getState) //запускаем эту функцию и даем ей dispatch и getState для работы
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+ }
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+ const newState = reducer(state, action) //пробуем запустить редьюсер
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+ if (newState !== state) { //проверяем, смог ли редьюсер обработать action
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+ state = newState //если смог, то обновляем state
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+ for (let cb of cbs) cb() //и запускаем подписчиков
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+ }
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+ }
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+
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+ return {
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+ getState, //добавление функции getState в результирующий объект
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+ dispatch,
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+ subscribe //добавление subscribe в объект
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+ }
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+}
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+
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+function promiseReducer(state = {}, { type, status, payload, error, name }) {
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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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+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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+const actionPromise = (name, promise) =>
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+ async dispatch => {
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+ dispatch(actionPending(name))
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+ try {
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+ let data = await promise
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+ dispatch(actionResolved(name, data))
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+ return data
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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 store = createStore(promiseReducer)
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+store.subscribe(() => console.log(store.getState()))
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+
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+//const delay = ms => new Promise(ok => setTimeout(() => ok(ms), ms))
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+
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+const getGQL = url =>
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+ async (query, variables = {}) => {
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+ let obj = await fetch(url, {
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+ method: 'POST',
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+ headers: {
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+ "Content-Type": "application/json"
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+ },
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+ body: JSON.stringify({ query, variables })
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+ })
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+ let a = await obj.json()
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+ if (!a.data && a.errors)
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+ throw new Error(JSON.stringify(a.errors))
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+ return a.data[Object.keys(a.data)[0]]
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+ }
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+
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+const backURL = 'http://shop-roles.asmer.fs.a-level.com.ua'
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+const gql = getGQL(backURL + '/graphql');
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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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+const actionCatById = (_id) => //добавить подкатегории
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+ actionPromise('catById', gql(`query catById($q: String){
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+ CategoryFindOne(query: $q){
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+ subCategories{name, _id}
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+ _id name goods {
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+ _id name price images {
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+ url
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+ }
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+ }
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+ }
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+ }`, { q: JSON.stringify([{ _id }]) }))
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+
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+//actionGoodById по аналогии
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+
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+const actionGoodById = (_id) => //добавить подкатегории
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+ actionPromise('goodById', gql(`query goodByID($q: String) {
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+ GoodFind(query: $q){
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+ name _id description price images{url}
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+ }
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+}`, { q: JSON.stringify([{ _id }]) }))
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+
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+store.dispatch(actionRootCats())
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+store.dispatch(actionGoodById())
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+
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+store.subscribe(() => {
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+ const { rootCats } = store.getState()
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+ if (rootCats?.payload) {
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+ aside.innerHTML = ''
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+ for (const { _id, name } of rootCats?.payload) {
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+ const link = document.createElement('a')
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+ link.href = `#/category/${_id}`
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+ link.innerText = name
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+ aside.append(link)
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+ }
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+ }
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+})
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+
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+window.onhashchange = () => {
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+ const [, route, _id] = location.hash.split('/')
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+
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+ const routes = {
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+ category() {
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+ store.dispatch(actionCatById(_id))
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+ },
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+ good() { //задиспатчить actionGoodById
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+ store.dispatch(actionGoodById(_id))
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+ },
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+ }
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+ if (route in routes)
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+ routes[route]()
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+}
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+
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+window.onhashchange()
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+
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+store.subscribe(() => {
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+ const { catById } = store.getState()
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+ const [, route, _id] = location.hash.split('/')
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+ if (catById?.payload && route === 'category') {
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+ const { name, subCategories } = catById.payload
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+ main.innerHTML = `<h1>${name}</h1> `
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+ subCategories ? subCategories.map(s => {
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+ const link = document.createElement('a')
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+ link.href = `#/category/${s._id}`
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+ link.innerText = s.name
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+ main.append(link)
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+ }) : ''
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+ for (const { _id, name, price, images } of catById.payload.goods) {
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+ const card = document.createElement('div')
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+ card.innerHTML = `<h2>${name}</h2>
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+ <img src="${backURL}/${images[0].url}" />
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+ <strong>${price}</strong>`
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+ const link = document.createElement('a')
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+ link.href = `#/good/${_id}`
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+ link.innerText = name
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+ card.append(link)
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+ main.append(card)
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+ }
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+ }
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+})
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+
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+store.subscribe(() => {
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+ const { goodById } = store.getState()
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+ const [, route, _id] = location.hash.split('/')
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+ if (goodById?.payload && route === 'good') {
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+ main.innerHTML = ''
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+ const { name, description, price, images } = goodById.payload[0]
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+ main.innerHTML = `
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+ <div div class="product" >
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+ <div class="product__img">
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+ <img src="${backURL}/${images[0].url}" />
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+ </div>
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+ <div class="product__inner">
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+ <h2 class="product_title">${name}</h2>
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+ <p class="product__price"> <strong>${price}</strong></p>
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+ <p class="product__description">
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+ <span>Обзор: ${description}</span>
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+ </p>
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+ </div>
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+ </div>`
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+ }
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+})
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+
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+
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+
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+//store.dispatch(actionPromise('', delay(1000)))
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+//store.dispatch(actionPromise('delay2000', delay(2000)))
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+//store.dispatch(actionPromise('luke', fetch('https://swapi.dev/api/people/1/').then(res => res.json())))
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+
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