|
|
@@ -0,0 +1,199 @@
|
|
|
+function createStore(reducer){
|
|
|
+ let state = reducer(undefined, {}) //стартовая инициализация состояния, запуск редьюсера со state === undefined
|
|
|
+ let cbs = [] //массив подписчиков
|
|
|
+
|
|
|
+ const getState = () => state //функция, возвращающая переменную из замыкания
|
|
|
+ const subscribe = cb => (cbs.push(cb), //запоминаем подписчиков в массиве
|
|
|
+ () => cbs = cbs.filter(c => c !== cb)) //возвращаем функцию unsubscribe, которая удаляет подписчика из списка
|
|
|
+
|
|
|
+ const dispatch = action => {
|
|
|
+ if (typeof action === 'function'){ //если action - не объект, а функция
|
|
|
+ return action(dispatch, getState) //запускаем эту функцию и даем ей dispatch и getState для работы
|
|
|
+ }
|
|
|
+ const newState = reducer(state, action) //пробуем запустить редьюсер
|
|
|
+ if (newState !== state){ //проверяем, смог ли редьюсер обработать action
|
|
|
+ state = newState //если смог, то обновляем state
|
|
|
+ for (let cb of cbs) cb() //и запускаем подписчиков
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return {
|
|
|
+ getState, //добавление функции getState в результирующий объект
|
|
|
+ dispatch,
|
|
|
+ subscribe //добавление subscribe в объект
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+function promiseReducer(state={}, {type, status, payload, error, name}){
|
|
|
+ if (type === 'PROMISE'){
|
|
|
+ return {
|
|
|
+ ...state,
|
|
|
+ [name]:{status, payload, error}
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return state;
|
|
|
+}
|
|
|
+
|
|
|
+const actionPending = name => ({type: 'PROMISE', status: 'PENDING', name})
|
|
|
+const actionResolved = (name, payload) => ({type: 'PROMISE', status: 'RESOLVED', name, payload})
|
|
|
+const actionRejected = (name, error) => ({type: 'PROMISE', status: 'REJECTED', name, error})
|
|
|
+const actionPromise = (name, promise) =>
|
|
|
+ async dispatch => {
|
|
|
+ dispatch(actionPending(name))
|
|
|
+ try {
|
|
|
+ let data = await promise
|
|
|
+ dispatch(actionResolved(name, data))
|
|
|
+ return data
|
|
|
+ }
|
|
|
+ catch(error){
|
|
|
+ dispatch(actionRejected(name, error))
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+const store = createStore(promiseReducer);
|
|
|
+store.subscribe(() => console.log(store.getState()));
|
|
|
+
|
|
|
+//const delay = ms => new Promise(ok => setTimeout(() => ok(ms), ms))
|
|
|
+
|
|
|
+const getGQL = url =>
|
|
|
+ async (query, variables={}) => {
|
|
|
+ let obj = await fetch(url, {
|
|
|
+ method: 'POST',
|
|
|
+ headers: {
|
|
|
+ "Content-Type": "application/json"
|
|
|
+ },
|
|
|
+ body: JSON.stringify({ query, variables })
|
|
|
+ })
|
|
|
+ let a = await obj.json()
|
|
|
+ if (!a.data && a.errors)
|
|
|
+ throw new Error(JSON.stringify(a.errors))
|
|
|
+ return a.data[Object.keys(a.data)[0]]
|
|
|
+ }
|
|
|
+
|
|
|
+const backURL = 'http://shop-roles.asmer.fs.a-level.com.ua';
|
|
|
+
|
|
|
+const gql = getGQL(backURL + '/graphql');
|
|
|
+
|
|
|
+const actionRootCats = () =>
|
|
|
+ actionPromise('rootCats', gql(`query {
|
|
|
+ CategoryFind(query: "[{\\"parent\\":null}]"){
|
|
|
+ _id name
|
|
|
+ }
|
|
|
+ }`))
|
|
|
+
|
|
|
+const actionCatById = (_id) => //добавить подкатегории
|
|
|
+ actionPromise('catById', gql(`query catById($q: String){
|
|
|
+ CategoryFindOne(query: $q){
|
|
|
+ _id name goods {
|
|
|
+ _id name price images {
|
|
|
+ url
|
|
|
+ }
|
|
|
+ }
|
|
|
+ subCategories {
|
|
|
+ _id name
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }`, {q: JSON.stringify([{_id}])}))
|
|
|
+
|
|
|
+//actionGoodById по аналогии
|
|
|
+
|
|
|
+const actionGoodById = (_id) =>
|
|
|
+ actionPromise('goodById', gql(`query goodById($q: String) {
|
|
|
+ GoodFindOne(query: $q) {
|
|
|
+ _id name price description images {
|
|
|
+ url
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }`, {q: JSON.stringify([{_id}])}))
|
|
|
+
|
|
|
+store.dispatch(actionRootCats());
|
|
|
+store.dispatch(actionGoodById());
|
|
|
+
|
|
|
+store.subscribe(() => {
|
|
|
+ const {rootCats} = store.getState()
|
|
|
+ if (rootCats?.payload){
|
|
|
+ aside.innerHTML = ''
|
|
|
+ for (const {_id, name} of rootCats?.payload){
|
|
|
+ const link = document.createElement('a')
|
|
|
+ link.href = `#/category/${_id}`
|
|
|
+ link.innerText = name
|
|
|
+ aside.append(link)
|
|
|
+ }
|
|
|
+ }
|
|
|
+})
|
|
|
+
|
|
|
+window.onhashchange = () => {
|
|
|
+ const [,route, _id] = location.hash.split('/')
|
|
|
+
|
|
|
+ const routes = {
|
|
|
+ category(){
|
|
|
+ store.dispatch(actionCatById(_id))
|
|
|
+ },
|
|
|
+ good(){ //задиспатчить actionGoodById
|
|
|
+ store.dispatch(actionGoodById(_id))
|
|
|
+ console.log('ТОВАРОСТРАНИЦА')
|
|
|
+ },
|
|
|
+ }
|
|
|
+ if (route in routes)
|
|
|
+ routes[route]()
|
|
|
+}
|
|
|
+
|
|
|
+window.onhashchange()
|
|
|
+
|
|
|
+store.subscribe(() => {
|
|
|
+ const {catById} = store.getState()
|
|
|
+ const [,route, _id] = location.hash.split('/')
|
|
|
+ if (catById?.payload && route === 'category'){
|
|
|
+ const {name} = catById.payload;
|
|
|
+ main.innerHTML = `<h1>${name}</h1>`
|
|
|
+
|
|
|
+ if (catById.payload.subCategories) {
|
|
|
+ for(const {_id, name} of catById.payload.subCategories) {
|
|
|
+ const link = document.createElement('a');
|
|
|
+ link.href = `#/category/${_id}`;
|
|
|
+ link.innerText = name;
|
|
|
+ main.append(link);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if (catById.payload.goods) {
|
|
|
+ for (const {_id, name, price, images} of catById.payload.goods){
|
|
|
+ const card = document.createElement('div')
|
|
|
+ card.innerHTML = `<h2>${name}</h2>
|
|
|
+ <img src="${backURL}/${images[0].url}" />
|
|
|
+ <strong>${price}</strong>
|
|
|
+ <br>
|
|
|
+ <a href="#/good/${_id}">Перейти на страницу товара</a>
|
|
|
+ `
|
|
|
+ main.append(card)
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+})
|
|
|
+
|
|
|
+store.subscribe(() => {
|
|
|
+ const {goodById} = store.getState();
|
|
|
+ const [,route, _id] = location.hash.split('/');
|
|
|
+ if (goodById?.payload && route === 'good') {
|
|
|
+ main.innerHTML = '';
|
|
|
+ const {_id, name, images, price, description} = goodById.payload;
|
|
|
+ const card = document.createElement('div');
|
|
|
+ card.innerHTML = `<h2>${name}</h2>
|
|
|
+ <img src="${backURL}/${images[0].url}" />
|
|
|
+ <strong>${price}</strong>
|
|
|
+ <h2>${description}</h2>
|
|
|
+ `;
|
|
|
+ main.append(card);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ //ТУТ ДОЛЖНА БЫТЬ ПРОВЕРКА НА НАЛИЧИЕ goodById в редакс
|
|
|
+ //и проверка на то, что сейчас в адресной строке адрес ВИДА #/good/АЙДИ
|
|
|
+ //в таком случае очищаем main и рисуем информацию про товар с подробностями
|
|
|
+)
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+//store.dispatch(actionPromise('', delay(1000)))
|
|
|
+//store.dispatch(actionPromise('delay2000', delay(2000)))
|
|
|
+//store.dispatch(actionPromise('luke', fetch('https://swapi.dev/api/people/1/').then(res => res.json())))
|
|
|
+
|
