✨ Improve error handling

frontend/src/App.tsx

@@ -37,6 +37,7 @@ import {ThemeProvider} from "./contexts/theme"
 function App({..._}: RouteComponentProps) {
     return React.useMemo(
         () => <>
+            <ErrorCatcherBox>
                 <Chapter>
                     <SophonDescriptionBox/>
                 </Chapter>
@@ -99,6 +100,7 @@ function App({..._}: RouteComponentProps) {
                         </>}
                     />
                 </InstanceProvider>
+            </ErrorCatcherBox>
         </>,
         [],
     )
@@ -112,11 +114,9 @@ export default function AppWrapper() {
                 <LayoutThreeCol>
                     <LayoutThreeCol.Center>
                         <ThemedTitle level={1}/>
-                        <ErrorCatcherBox>
                             <Reach.Router>
                                 <App default/>
                             </Reach.Router>
-                        </ErrorCatcherBox>
                         <SophonFooter/>
                     </LayoutThreeCol.Center>
                 </LayoutThreeCol>

frontend/src/components/elements/GoBackButton.tsx

@@ -0,0 +1,34 @@
+import {faLevelUpAlt} from "@fortawesome/free-solid-svg-icons"
+import {FontAwesomeIcon} from "@fortawesome/react-fontawesome"
+import * as Reach from "@reach/router"
+import {Button} from "@steffo/bluelib-react"
+import {ButtonProps} from "@steffo/bluelib-react/dist/components/inputs/Button"
+import * as React from "react"
+import {useSophonPath} from "../../hooks/useSophonPath"
+
+
+/**
+ * A button that takes the user back one sophon level (so two levels).
+ *
+ * @constructor
+ */
+export function GoBackButton({onClick, ...props}: Omit<ButtonProps, "children">): JSX.Element {
+    const location = useSophonPath()
+
+    const onClickWrapped = React.useCallback(
+        async event => {
+            event.preventDefault()
+            if(onClick) {
+                onClick(event)
+            }
+            await Reach.navigate("../..")
+        },
+        [onClick],
+    )
+
+    return (
+        <Button onClick={onClickWrapped} disabled={location.count === 0} {...props}>
+            <FontAwesomeIcon icon={faLevelUpAlt}/>&nbsp;Go up
+        </Button>
+    )
+}

frontend/src/components/elements/NavigateButton.tsx

@@ -0,0 +1,40 @@
+import * as Reach from "@reach/router"
+import {Button} from "@steffo/bluelib-react"
+import {ButtonProps} from "@steffo/bluelib-react/dist/components/inputs/Button"
+import * as React from "react"
+
+
+/**
+ * The props of {@link NavigateButton}.
+ */
+export interface NavigateButtonProps extends ButtonProps {
+    href: string,
+}
+
+
+/**
+ * A button functioning like a {@link Link}.
+ *
+ * @constructor
+ */
+export function NavigateButton({href, children, onClick, ...props}: NavigateButtonProps): JSX.Element {
+    const location = Reach.useLocation()
+
+    const onClickWrapped = React.useCallback(
+        event => {
+            event.preventDefault()
+            if(onClick) {
+                onClick(event)
+            }
+            if(href) {
+                // noinspection JSIgnoredPromiseFromCall
+                Reach.navigate(href)
+            }
+        },
+        [href, onClick],
+    )
+
+    return (
+        <Button children={children} onClick={onClickWrapped} disabled={location.pathname === href} {...props}/>
+    )
+}

frontend/src/components/errors/ErrorCatcherBox.tsx

@@ -1,7 +1,9 @@
-import {Box, Form} from "@steffo/bluelib-react"
+import {faAngleDoubleRight, faBug} from "@fortawesome/free-solid-svg-icons"
+import {FontAwesomeIcon} from "@fortawesome/react-fontawesome"
+import {Box, Button, Form} from "@steffo/bluelib-react"
 import * as React from "react"
-import {IgnoreErrorButton} from "./IgnoreErrorButton"
-import {ReportBugButton} from "./ReportBugButton"
+import {GoBackButton} from "../elements/GoBackButton"
+import {NavigateButton} from "../elements/NavigateButton"
 
 
 interface ErrorCatcherBoxProps {
@@ -44,8 +46,13 @@ export class ErrorCatcherBox extends React.Component<ErrorCatcherBoxProps, Error
                     {this.state.error.toString()}
                     <Form>
                         <Form.Row>
-                            <IgnoreErrorButton onClick={this.clearError}/>
-                            <ReportBugButton/>
+                            <NavigateButton href={"https://github.com/Steffo99/sophon/issues/new?assignees=&labels=bug&template=1_bug_report.md&title="}>
+                                <FontAwesomeIcon icon={faBug}/>&nbsp;Report bug
+                            </NavigateButton>
+                            <GoBackButton/>
+                            <Button onClick={this.clearError}>
+                                <FontAwesomeIcon icon={faAngleDoubleRight}/>&nbsp;Try ignoring the error
+                            </Button>
                         </Form.Row>
                     </Form>
                 </Box>

frontend/src/components/errors/IgnoreErrorButton.tsx

@@ -1,18 +0,0 @@
-import {faAngleDoubleRight} from "@fortawesome/free-solid-svg-icons"
-import {FontAwesomeIcon} from "@fortawesome/react-fontawesome"
-import {Button} from "@steffo/bluelib-react"
-import * as React from "react"
-
-
-export interface IgnoreErrorButtonProps {
-    onClick?: (event: React.MouseEvent<HTMLButtonElement>) => void;
-}
-
-
-export function IgnoreErrorButton({onClick}: IgnoreErrorButtonProps): JSX.Element {
-    return (
-        <Button onClick={onClick}>
-            <FontAwesomeIcon icon={faAngleDoubleRight}/>&nbsp;Try ignoring the error
-        </Button>
-    )
-}

frontend/src/components/errors/ReportBugButton.tsx

@@ -1,25 +0,0 @@
-import {faBug} from "@fortawesome/free-solid-svg-icons"
-import {FontAwesomeIcon} from "@fortawesome/react-fontawesome"
-import {navigate} from "@reach/router"
-import {Button} from "@steffo/bluelib-react"
-import * as React from "react"
-
-
-export function ReportBugButton(): JSX.Element {
-    const onClick =
-        React.useCallback(
-            async () => {
-                await navigate("https://github.com/Steffo99/sophon/issues/new?assignees=&labels=bug&template=1_bug_report.md&title=")
-            },
-            [],
-        )
-
-    return React.useMemo(
-        () => (
-            <Button>
-                <FontAwesomeIcon onClick={onClick} icon={faBug}/>&nbsp;Report bug
-            </Button>
-        ),
-        [onClick],
-    )
-}

frontend/src/utils/ParsePath.ts

@@ -37,6 +37,11 @@ export interface ParsedPath {
      * Passed the login page (either by browsing as guest or by logging in).
      */
     loggedIn?: boolean,
+
+    /**
+     * The number of pages that separate this to the website root.
+     */
+    count: number,
 }
 
 /**
@@ -44,7 +49,9 @@ export interface ParsedPath {
  * @param path - The path to split.
  */
 export function parsePath(path: string): ParsedPath {
-    let result: ParsedPath = {}
+    let result: ParsedPath = {
+        count: 0,
+    }
 
     result.instance = path.match(/[/]i[/]([^/]+)/)?.[1]
     result.userId = path.match(/[/]u[/]([0-9]+)/)?.[1]
@@ -54,5 +61,27 @@ export function parsePath(path: string): ParsedPath {
     result.notebook = path.match(/[/]n[/]([A-Za-z0-9_-]+)/)?.[1]
     result.loggedIn = Boolean(path.match(/[/]l[/]/))
 
+    if(result.instance) {
+        result.count += 1
+    }
+    if(result.userId) {
+        result.count += 1
+    }
+    if(result.userName) {
+        result.count += 1
+    }
+    if(result.researchGroup) {
+        result.count += 1
+    }
+    if(result.researchProject) {
+        result.count += 1
+    }
+    if(result.notebook) {
+        result.count += 1
+    }
+    if(result.loggedIn) {
+        result.count += 1
+    }
+
     return result
 }