82 lines
2.6 KiB
TypeScript
82 lines
2.6 KiB
TypeScript
import React, { useState, createContext, useEffect, ReactNode } from 'react';
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import { Course, Group, Basket, GroupType } from '../types';
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import axios from 'axios';
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interface CourseContext {
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courses: Array<Course>;
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basket: Array<Basket>;
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addToBasket: (courses: Course) => void;
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addGroup: (group: Group, id: number) => void;
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deleteFromBasket: (id: number) => void;
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}
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export const coursesContext = createContext<CourseContext | null>(null);
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interface CoursesProviderProps {
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children: ReactNode;
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}
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export const CoursesProvider = ({ children }: CoursesProviderProps) => {
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//fetch courses with groups
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const [courses, setCourses] = useState<Array<Course>>([]);
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const [basket, setBasket] = useState<Array<Basket>>([]);
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const addToBasket = (course: Course) => {
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const courseToBasket = {
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name: course.name,
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id: course.id,
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classes: course.classes[0],
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lecture: course.lectures !== undefined ? course.lectures[0] : undefined,
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} as Basket;
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setBasket([...basket, courseToBasket]);
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};
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const deleteFromBasket = (id: number) => setBasket(basket.filter((course) => course.id !== id));
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useEffect(() => {
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console.log('BASKET');
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console.log(basket);
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}, [basket]);
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//immutability
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const addGroup = (choosenGroup: Group, id: number) => {
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const basketCourse = basket.filter((course) => course.id === id)[0];
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const type = choosenGroup.type;
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if (type === GroupType.CLASS) {
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setBasket(
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basket.map((basket) => (basket.id === basketCourse.id ? { ...basket, classes: choosenGroup } : basket)),
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);
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} else if (type === GroupType.LECTURE) {
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setBasket(
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basket.map((basket) => (basket.id === basketCourse.id ? { ...basket, lecture: choosenGroup } : basket)),
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);
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}
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};
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useEffect(() => {
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const fetchData = async () => {
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const { data } = await axios.get<Array<{ id: string; name: string; groups: Array<Group> }>>(
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`${process.env.REACT_APP_API_URL}/api/v1/courses/getCoursesWithGroups`,
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);
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const courses = data.map(({ id, name, groups }) => ({
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id: parseInt(id),
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name,
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lectures: groups.filter(({ type }) => type === GroupType.LECTURE),
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classes: groups.filter(({ type }) => type === GroupType.CLASS),
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})) as Array<Course>;
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console.log('courses mapped');
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console.log(courses);
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courses.sort((a: Course, b: Course) => (a.name > b.name ? 1 : -1));
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setCourses(courses);
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};
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fetchData();
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}, []);
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return (
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<coursesContext.Provider value={{ courses, basket, addToBasket, addGroup, deleteFromBasket }}>
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{children}
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</coursesContext.Provider>
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);
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};
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