Add basic error handling

frontend/src/App.tsx

@@ -1,4 +1,4 @@
-import React from 'react'
+import React, { useState } from 'react'
 import { QueryClient, QueryClientProvider } from 'react-query'
 import { Navigate, Route, Routes } from 'react-router-dom'
 import './App.css'
@@ -28,6 +28,9 @@ import GradeCard from './views/GradeCard'
 import Group from './views/coordinator/Group'
 import dayjs from 'dayjs'
 import WorkloadStatistics from './views/coordinator/WorkloadStatistics'
+import { MainContext } from './context/MainContext'
+import WithAxios from './context/WithAxios'
+import BaseModal from './components/BaseModal'
 
 require('dayjs/locale/pl')
 dayjs.locale('pl')
@@ -41,8 +44,12 @@ const queryClient = new QueryClient({
 })
 
 function App() {
+  const [isModalOpen, setIsModalOpen] = useState(false)
+
   return (
     <div>
+      <MainContext.Provider value={{ isModalOpen, setIsModalOpen }}>
+        <WithAxios>
           <QueryClientProvider client={queryClient}>
             <Routes>
               <Route index element={<Login />} />
@@ -88,6 +95,9 @@ function App() {
               </Route>
             </Routes>
           </QueryClientProvider>
+          <BaseModal isOpen={isModalOpen} />
+        </WithAxios>
+      </MainContext.Provider>
     </div>
   )
 }

frontend/src/assets/svg/icon-error.svg

@@ -0,0 +1 @@
+<svg height="16" width="16" viewBox="0 0 16 16" xmlns="http://www.w3.org/2000/svg"><path d="m8 1c-3.866 0-7 3.13401-7 7s3.134 7 7 7 7-3.13401 7-7-3.134-7-7-7zm-1 2h2v4l-.5 3h-1l-.5-3zm1 8a1 1 0 0 1 0 2 1 1 0 0 1 0-2z" fill="#ef2929"/></svg>

frontend/src/components/BaseModal.tsx

@@ -0,0 +1,72 @@
+import { ReactElement, useContext } from 'react'
+import Modal from 'react-modal'
+import { MainContext } from '../context/MainContext'
+import { ReactComponent as IconRemove } from '../assets/svg/icon-remove.svg'
+import { ReactComponent as IconError } from '../assets/svg/icon-error.svg'
+
+export interface ModalData {
+  title: string
+  message: string
+  icon?: ReactElement
+}
+
+export interface BaseModalProps {
+  isOpen: boolean
+  modalData?: ModalData | null
+}
+
+const customStyles = {
+  overlay: {
+    backgroundColor: 'rgba(125,125,125, 0.55)',
+    zIndex: 100,
+  },
+  content: {
+    top: '50%',
+    left: '50%',
+    right: 'auto',
+    bottom: 'auto',
+    marginRight: '-50%',
+    transform: 'translate(-50%, -50%)',
+    padding: '15px',
+    width: '460px',
+    height: '250px',
+    borderRadius: '25px',
+    backgroundColor: '#f7f7f7',
+  },
+}
+
+const BaseModal = ({ isOpen, modalData }: BaseModalProps) => {
+  Modal.setAppElement('#root')
+  const { setIsModalOpen } = useContext(MainContext)
+  const { icon, message, title } = modalData ?? {}
+  return (
+    <>
+      <Modal
+        isOpen={isOpen}
+        style={customStyles}
+        contentLabel="Info modal"
+        onRequestClose={() => setIsModalOpen(false)}
+      >
+        <div className="flex flex-col p-2">
+          <button
+            className="self-end"
+            onClick={() => {
+              if (setIsModalOpen) setIsModalOpen(false)
+            }}
+          >
+            <IconRemove />
+          </button>
+          <div className="flex justify-center align-center items-center mt-8 flex-col">
+            <IconError style={{ transform: 'scale(2)' }} />
+
+            <h2 className="font-bold text-xl text-center mt-5">
+              Przepraszamy, wystąpił błąd. <br /> Spróbuj ponownie.
+            </h2>
+          </div>
+        </div>
+      </Modal>
+    </>
+  )
+}
+
+export default BaseModal

frontend/src/context/MainContext.tsx

@@ -0,0 +1,8 @@
+import React, { Dispatch, SetStateAction } from 'react'
+
+type ContextProps = {
+  isModalOpen: boolean
+  setIsModalOpen: Dispatch<SetStateAction<boolean>>
+}
+
+export const MainContext = React.createContext<ContextProps>({} as ContextProps)

frontend/src/context/WithAxios.tsx

@@ -0,0 +1,29 @@
+import { FunctionComponent, useContext, useMemo } from 'react'
+import axiosInstance from '../api/axiosInstance'
+import { MainContext } from './MainContext'
+
+const WithAxios: FunctionComponent<{ children: React.ReactNode }> = ({
+  children,
+}) => {
+  const { setIsModalOpen } = useContext(MainContext)
+  useMemo(() => {
+    axiosInstance.interceptors.request.use(async (request) => {
+      return request
+    })
+    axiosInstance.interceptors.response.use(
+      (response) => {
+        return response
+      },
+      (error) => {
+        setIsModalOpen(false)
+        if (error.response?.status) {
+          setIsModalOpen(true)
+        }
+        return Promise.reject(error)
+      },
+    )
+  }, [setIsModalOpen])
+  return <>{children}</>
+}
+
+export default WithAxios