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@@ -1,24 +1,193 @@
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-htmlTree()
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-function htmlTree() {
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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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-htmlTree()
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-function htmlTree() {
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+
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+function promiseReducer(state={}, {type, status, payload, error, name}) {
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+ if (!state) {
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+ return {}
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+ //{ login: {status, payload, error},
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+ // catById: {status, payload, error}
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+ //}
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+ }
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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]: {
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+ status: status,
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+ payload : payload,
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+ error: error,
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+ }
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+ }
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+ }
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+ return state
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}
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-htmlTree()
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-function htmlTree() {
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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 store = createStore(promiseReducer)
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+store.subscribe(() => console.log(store.getState()))
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+
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+
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+// const delay = (ms) => new Promise((ok) => setTimeout(() => ok(ms), ms))
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+// store.dispatch(actionPending('delay1000'))
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+// delay(1000).then(data => store.dispatch(actionResolved('delay1000', data)),
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+// error => store.dispatch(actionRejected('delay1000', error)))
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+
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+// store.dispatch(actionPending('delay2000'))
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+// delay(2000).then(data => store.dispatch(actionResolved('delay2000', data)),
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+// error => store.dispatch(actionRejected('delay2000', error)))
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+
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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))
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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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-htmlTree()
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-function htmlTree() {
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+const getGQL = url =>
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+ async (query, variables={}) => {
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+ // try {
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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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+ } else {
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+ return a.data[Object.keys(a.data)[0]]
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+ }
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+ // }
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+ // catch (error) {
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+ // console.log('Что-то не так, Бро ' + error);
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+ // }
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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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+
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+ const gql = getGQL(backURL + 'graphql');
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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) =>
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+ actionPromise('catById', gql(`query catById($q: String){
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+ CategoryFindOne(query: $q){
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+ _id name goods {
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+ _id name price images {
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+ url
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+ }
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+ }
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+ }
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+ }`, {q: JSON.stringify([{_id}])}))
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+
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+//actionGoodById по аналогии
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+
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+store.dispatch(actionRootCats())
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+store.subscribe(() => {
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+ const {rootCats} = store.getState()
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+ if (rootCats?.payload) {
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+ aside.innerHTML = ''
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+ for (const {_id, name} of rootCats?.payload) {
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+ const link = document.createElement('a')
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+ link.href = `#/category/${_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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+// location.hash - адресная строка после решетки
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+window.onhashchange = () => {
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+ const [, route, _id] = location.hash.split('/')
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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() {
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+ //задиспатчить actionGoodById
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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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-htmlTree()
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-function htmlTree() {
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-}
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+// запускает обработчик при загрузке страницы
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+window.onhashchange()
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+
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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} = catById.payload
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+ main.innerHTML = `<h1>${name}</h1> ТУТ ДОЛЖНЫ БЫТЬ ПОДКАТЕГОРИИ`
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+ for (const {_id, name, price, images} of catById.payload.goods){
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+ const card = document.createElement('div')
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+ card.innerHTML = `<h2>${name}</h2>
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+ <img src="${backURL}/${images[0].url}" />
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+ <strong>${price}</strong>
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+ ТУТ ДОЛЖНА БЫТЬ ССЫЛКА НА СТРАНИЦУ ТОВАРА
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+ ВИДА #/good/АЙДИ
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+ `
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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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+
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+store.subscribe(() => {
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+ //ТУТ ДОЛЖНА БЫТЬ ПРОВЕРКА НА НАЛИЧИЕ goodById в редакс
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+ //и проверка на то, что сейчас в адресной строке адрес ВИДА #/good/АЙДИ
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+ //в таком случае очищаем main и рисуем информацию про товар с подробностями
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+})
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+
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+// store.dispatch(actionPromise('delay1000', 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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ivar_n