💥 Refactor the login/logout flow

code/backend/backend.iml

@@ -5,7 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/nest_backend" isTestSource="false" />
     </content>
-    <orderEntry type="jdk" jdkName="Poetry (g2-progetto) (2)" jdkType="Python SDK" />
+    <orderEntry type="jdk" jdkName="Poetry (backend)" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

code/frontend/src/App.js

@@ -1,7 +1,4 @@
-import classNames from "classnames"
-import Style from "./App.module.css"
 import Layout from "./components/Layout"
-import ContextTheme from "./contexts/ContextTheme"
 import { BrowserRouter } from "react-router-dom"
 import { Route, Switch } from "react-router"
 import PageDashboard from "./routes/PageDashboard"
@@ -9,11 +6,11 @@ import PageRepositories from "./routes/PageRepositories"
 import PageAlerts from "./routes/PageAlerts"
 import PageSettings from "./routes/PageSettings"
 import PageSandbox from "./routes/PageSandbox"
-import useSavedTheme from "./hooks/useSavedTheme"
 import PageLogin from "./routes/PageLogin"
-import useSavedLogin from "./hooks/useSavedLogin"
-import ContextLogin from "./contexts/ContextLogin"
 import PageRoot from "./routes/PageRoot"
+import GlobalTheme from "./components/GlobalTheme"
+import GlobalServer from "./components/GlobalServer"
+import GlobalUser from "./components/GlobalUser"
 
 
 /**
@@ -23,15 +20,12 @@ import PageRoot from "./routes/PageRoot"
  * @constructor
  */
 export default function App() {
-    const theme = useSavedTheme();
-    const login = useSavedLogin();
-
     return (
-        <ContextTheme.Provider value={theme}>
-        <ContextLogin.Provider value={login}>
+        <GlobalServer>
+            <GlobalUser>
+                <GlobalTheme>
                     <BrowserRouter>
 
-            <div className={classNames(Style.App, theme)}>
         <Layout>
             <Switch>
                 <Route path={"/login"} exact={true}>
@@ -57,10 +51,10 @@ export default function App() {
                 </Route>
             </Switch>
         </Layout>
-            </div>
 
                     </BrowserRouter>
-        </ContextLogin.Provider>
-        </ContextTheme.Provider>
+                </GlobalTheme>
+            </GlobalUser>
+        </GlobalServer>
     )
 }

code/frontend/src/App.module.css

@@ -1,9 +0,0 @@
-.App {
-    height: 100vh;
-    width: 100vw;
-
-    padding: 16px;
-
-    background-color: var(--bg-primary);
-    color: var(--fg-primary);
-}

code/frontend/src/components/BoxAlert.js

@@ -0,0 +1,22 @@
+import React from "react"
+import Style from "./BoxAlert.module.css"
+import classNames from "classnames"
+
+
+/**
+ * A colored alert box to draw the user's attention.
+ *
+ * @param color - The color of the alert.
+ * @param children - The contents of the alert.
+ * @param className - Additional class(es) to add to the div.
+ * @param props - Additional props to pass to the div.
+ * @returns {JSX.Element}
+ * @constructor
+ */
+export default function BoxAlert({ color, children, className, ...props }) {
+    return (
+        <div className={classNames(Style.BoxAlert, Style[`BoxAlert${color}`], className)} {...props}>
+            {children}
+        </div>
+    )
+}

code/frontend/src/components/BoxAlert.module.css

@@ -0,0 +1,25 @@
+.BoxAlert {
+    padding: 5px 20px;
+    border-radius: 25px;
+    box-shadow: 0 4px 4px rgba(0, 0, 0, 0.25);
+}
+
+.BoxAlertRed {
+    color: var(--fg-red);
+    background-color: var(--bg-red);
+}
+
+.BoxAlertGreen {
+    color: var(--fg-green);
+    background-color: var(--bg-green);
+}
+
+.BoxAlertYellow {
+    color: var(--fg-yellow);
+    background-color: var(--bg-yellow);
+}
+
+.BoxAlertGrey {
+    color: var(--fg-grey);
+    background-color: var(--bg-grey);
+}

code/frontend/src/components/BoxFullScrollable.js

@@ -5,7 +5,7 @@ import BoxFull from "./BoxFull"
 
 
 /**
- * A {@link BoxFull} whose body does not grow automatically but instead supports scrolling.
+ * A {@link BoxFull} whose body supports scrolling.
  *
  * @param children - The contents of the box body.
  * @param childrenClassName - Additional class(es) added to the inner `<div>` acting as the body.

code/frontend/src/components/BoxLoggedIn.js

@@ -3,20 +3,28 @@ import BoxFull from "./BoxFull"
 import LoggedInUser from "./LoggedInUser"
 import Button from "./Button"
 import { faSignOutAlt } from "@fortawesome/free-solid-svg-icons"
-import ContextLogin from "../contexts/ContextLogin"
+import ContextUser from "../contexts/ContextUser"
 import { useHistory } from "react-router"
 import Style from "./BoxLoggedIn.module.css"
+import CurrentServer from "./CurrentServer"
 
 
+/**
+ * A {@link BoxFull} displaying the user's current login status, and allowing them to logout.
+ *
+ * @param props
+ * @returns {JSX.Element}
+ * @constructor
+ */
 export default function BoxLoggedIn({ ...props }) {
-    const {logout} = useContext(ContextLogin)
+    const {logout} = useContext(ContextUser)
     const history = useHistory()
 
     return (
         <BoxFull header={"Logged in"} {...props}>
             <div className={Style.BoxLoggedInContents}>
                 <div>
-                    You are currently logged in as <LoggedInUser/>.
+                    You are currently logged in at <CurrentServer/> as <LoggedInUser/>.
                 </div>
                 <div>
                     <Button color={"Red"} onClick={e => {

code/frontend/src/components/BoxLogin.js

@@ -0,0 +1,85 @@
+import React, { useContext, useState } from "react"
+import FormLabelled from "./FormLabelled"
+import FormLabel from "./FormLabel"
+import InputWithIcon from "./InputWithIcon"
+import { faArrowRight, faEnvelope, faKey } from "@fortawesome/free-solid-svg-icons"
+import BoxFull from "./BoxFull"
+import FormButton from "./FormButton"
+import ContextUser from "../contexts/ContextUser"
+import { useHistory } from "react-router"
+import FormAlert from "./FormAlert"
+
+
+/**
+ * A {@link BoxFull} allowing the user to login.
+ *
+ * @param props - Additional props to pass to the box.
+ * @returns {JSX.Element}
+ * @constructor
+ */
+export default function BoxLogin({ ...props }) {
+    const [email, setEmail] = useState("admin@admin.com")
+    const [password, setPassword] = useState("password")
+    const [working, setWorking] = useState(false)
+    const [error, setError] = useState(null)
+    const {login} = useContext(ContextUser)
+    const history = useHistory()
+
+    const doLogin = async (event) => {
+        if(working) {
+            return;
+        }
+
+        setWorking(true)
+        try {
+            await login(email, password)
+            history.push("/dashboard")
+        }
+        catch(e) {
+            setError(e)
+        }
+        finally {
+            setWorking(false)
+        }
+    }
+
+    return (
+        <BoxFull header={"Login"} {...props}>
+            <FormLabelled>
+                <FormLabel text={"Email"} htmlFor={"login-email"}>
+                    <InputWithIcon
+                        id={"login-email"}
+                        name={"login-email"}
+                        value={email}
+                        onChange={e => setEmail(e.target.value)}
+                        type={"email"}
+                        icon={faEnvelope}
+                    />
+                </FormLabel>
+                <FormLabel text={"Password"} htmlFor={"login-password"}>
+                    <InputWithIcon
+                        id={"login-password"}
+                        name={"login-password"}
+                        value={password}
+                        onChange={e => setPassword(e.target.value)}
+                        type={"password"}
+                        icon={faKey}
+                    />
+                </FormLabel>
+                {error ?
+                    <FormAlert color={"Red"}>
+                        {error.toString()}
+                    </FormAlert>
+                : null}
+                <FormButton
+                    onClick={doLogin}
+                    icon={faArrowRight}
+                    color={"Green"}
+                    disabled={working}
+                >
+                    Login
+                </FormButton>
+            </FormLabelled>
+        </BoxFull>
+    )
+}

code/frontend/src/components/BoxSetServer.js

@@ -0,0 +1,35 @@
+import React, { useContext } from "react"
+import BoxFull from "./BoxFull"
+import FormLabelled from "./FormLabelled"
+import FormLabel from "./FormLabel"
+import InputWithIcon from "./InputWithIcon"
+import { faGlobe } from "@fortawesome/free-solid-svg-icons"
+import ContextServer from "../contexts/ContextServer"
+
+
+/**
+ * A {@link BoxFull} allowing the user to select the backend server they want to login to.
+ *
+ * @param props - Additional props to pass to the box.
+ * @returns {JSX.Element}
+ * @constructor
+ */
+export default function BoxSetServer({ ...props }) {
+    const {server, setServer} = useContext(ContextServer);
+
+    return (
+        <BoxFull header={"Choose server"} {...props}>
+            <FormLabelled>
+                <FormLabel text={"Base URL"} htmlFor={"set-server-base-url"}>
+                    <InputWithIcon
+                        id={"set-server-base-url"}
+                        type={"url"}
+                        icon={faGlobe}
+                        value={server}
+                        onChange={e => setServer(e.target.value)}
+                    />
+                </FormLabel>
+            </FormLabelled>
+        </BoxFull>
+    )
+}

code/frontend/src/components/ButtonSidebar.js

@@ -7,7 +7,7 @@ import { useRouteMatch } from "react-router"
 
 
 /**
- * A button residing in the sidebar, used to switch between pages.
+ * A button residing in the {@link Sidebar}, used to switch between pages.
  *
  * @param icon - The FontAwesome IconDefinition of the icon that should be rendered in the button.
  * @param children - The contents of the button.

code/frontend/src/components/CurrentServer.js

@@ -0,0 +1,22 @@
+import React, { useContext } from "react"
+import {FontAwesomeIcon} from "@fortawesome/react-fontawesome"
+import { faGlobe } from "@fortawesome/free-solid-svg-icons"
+import ContextServer from "../contexts/ContextServer"
+
+
+/**
+ * An element displaying inline the current backend server.
+ *
+ * @param props - Additional props to pass to the element.
+ * @returns {JSX.Element}
+ * @constructor
+ */
+export default function CurrentServer({ ...props }) {
+    const {server} = useContext(ContextServer);
+
+    return (
+        <b {...props}>
+            <FontAwesomeIcon icon={faGlobe}/> {server}
+        </b>
+    )
+}

code/frontend/src/components/FormAlert.js

@@ -0,0 +1,22 @@
+import React from "react"
+import Style from "./FormAlert.module.css"
+import classNames from "classnames"
+import BoxAlert from "./BoxAlert"
+
+
+/**
+ * A {@link BoxAlert} ready to be used in a {@link FormLabelled}.
+ *
+ * @param children - The contents of the alert.
+ * @param className - Additional class(es) to add to the box.
+ * @param props - Additional props to pass to the box.
+ * @returns {JSX.Element}
+ * @constructor
+ */
+export default function FormAlert({ children, className, ...props }) {
+    return (
+        <BoxAlert className={classNames(Style.FormAlert, className)} {...props}>
+            {children}
+        </BoxAlert>
+    )
+}

code/frontend/src/components/FormAlert.module.css

@@ -0,0 +1,3 @@
+.FormAlert {
+    grid-column: 1 / 3;
+}

code/frontend/src/components/FormButton.js

@@ -0,0 +1,19 @@
+import React from "react"
+import Style from "./FormButton.module.css"
+import classNames from "classnames"
+import Button from "./Button"
+
+
+/**
+ * A {@link Button} ready to be used in a {@link FormLabelled}.
+ *
+ * @returns {JSX.Element}
+ * @constructor
+ */
+export default function FormButton({ children, className, ...props }) {
+    return (
+        <Button className={classNames(Style.FormButton, className)} {...props}>
+            {children}
+        </Button>
+    )
+}

code/frontend/src/components/FormButton.module.css

@@ -0,0 +1,3 @@
+.FormButton {
+    grid-column: 1 / 3;
+}

code/frontend/src/components/FormLabel.js

@@ -1,9 +1,10 @@
 import React, { Fragment } from "react"
-import Style from "./Label.module.css"
+import Style from "./FormLabel.module.css"
 
 
 /**
- * A row of a {@link LabelledForm}.
+ * A row of a {@link FormLabelled}.
+ *
  * It displays a label on the first column and a container for the labelled element on the second column.
  *
  * @param children - The labelled element.
@@ -12,7 +13,7 @@ import Style from "./Label.module.css"
  * @returns {JSX.Element}
  * @constructor
  */
-export default function Label({ children, text, htmlFor }) {
+export default function FormLabel({ children, text, htmlFor }) {
     return (
         <Fragment>
             <label htmlFor={htmlFor} className={Style.LabelText} >

code/frontend/src/components/FormLabelled.js

@@ -1,20 +1,17 @@
 import React from "react"
-import Style from "./LabelledForm.module.css"
+import Style from "./FormLabelled.module.css"
 import classNames from "classnames"
 
 
 /**
  * A form with two columns: the leftmost one contains labels, while the rightmost one contains input elements.
  *
- * The {@link Label} element can be used to quickly generate labelled input elements.
+ * The {@link FormLabel} element can be used to quickly generate labelled input elements.
  *
- * @param children - The contents of the form.
- * @param className - Additional class(es) to be added to the form.
- * @param props - Additional props to be passed to the form.
  * @returns {JSX.Element}
  * @constructor
  */
-export default function LabelledForm({ children, className, ...props }) {
+export default function FormLabelled({ children, className, ...props }) {
     return (
         <form className={classNames(Style.LabelledForm, className)} {...props}>
             {children}

code/frontend/src/components/GlobalServer.js

@@ -0,0 +1,64 @@
+import React from "react"
+import useLocalStorageState from "../hooks/useLocalStorageState"
+import ContextServer from "../contexts/ContextServer"
+
+
+/**
+ * Provides {@link ContextServer} to all contained elements.
+ *
+ * Defaults to using `http://127.0.0.1:5000` as server address.
+ *
+ * @param children
+ * @returns {JSX.Element}
+ * @constructor
+ */
+export default function GlobalServer({ children }) {
+    const [server, setServer] = useLocalStorageState("server", "http://127.0.0.1:5000")
+
+    /**
+     * Fetch JSON data from the API.
+     *
+     * @param method - The method to use.
+     * @param path - The path to request data at (ex. `/api/repositories`)
+     * @param body - The body of the request (it will be automatically converted to JSON.
+     * @param init - Additional arguments to pass to the `init` parameter of {@link fetch}.
+     * @returns {Promise<*>}
+     */
+    const fetchData = async (method, path, body, init) => {
+        if(!server) {
+            throw new Error(`Invalid server: ${server}`)
+        }
+
+        if(!init) {
+            init = {}
+        }
+        if(!init["headers"]) {
+            init["headers"] = {}
+        }
+        init["headers"]["Content-Type"] = "application/json"
+
+        const response = await fetch(`${server}${path}`, {
+            method: method,
+            body: JSON.stringify(body),
+            ...init,
+        })
+
+        if(response.status >= 500) {
+            throw new Error(`Server error: ${response.status} ${response.statusText}`)
+        }
+
+        const json = await response.json()
+
+        if(json["result"] !== "success") {
+            throw new Error(`Request failed: ${json["msg"]}`)
+        }
+
+        return json["data"]
+    }
+
+    return (
+        <ContextServer.Provider value={{server, setServer, fetchData}}>
+            {children}
+        </ContextServer.Provider>
+    )
+}

code/frontend/src/components/GlobalTheme.js

@@ -0,0 +1,21 @@
+import React from "react"
+import useLocalStorageState from "../hooks/useLocalStorageState"
+import ContextTheme from "../contexts/ContextTheme"
+
+
+/**
+ * Provides {@link ContextTheme} to all contained elements.
+ *
+ * @param children
+ * @returns {JSX.Element}
+ * @constructor
+ */
+export default function GlobalTheme({ children }) {
+    const [theme, setTheme] = useLocalStorageState("theme", "ThemeDark")
+
+    return (
+        <ContextTheme.Provider value={{theme, setTheme}}>
+            {children}
+        </ContextTheme.Provider>
+    )
+}

code/frontend/src/components/GlobalUser.js

@@ -0,0 +1,86 @@
+import React, { useContext } from "react"
+import useLocalStorageState from "../hooks/useLocalStorageState"
+import ContextServer from "../contexts/ContextServer"
+import ContextUser from "../contexts/ContextUser"
+
+
+/**
+ * Provides {@link ContextUser} to all contained elements.
+ *
+ * @param children
+ * @returns {JSX.Element}
+ * @constructor
+ */
+export default function GlobalUser({ children }) {
+    const {fetchData} = useContext(ContextServer)
+    const [user, setUser] = useLocalStorageState("login", null)
+
+    /**
+     * Fetch JSON data from the API as the authenticated user.
+     *
+     * Requires an user to be logged in!
+     *
+     * @param method - The method to use.
+     * @param path - The path to request data at (ex. `/api/repositories`)
+     * @param body - The body of the request (it will be automatically converted to JSON.
+     * @param init - Additional arguments to pass to the `init` parameter of {@link fetch}.
+     * @returns {Promise<*>}
+     */
+    const fetchDataAuth = async (method, path, body, init) => {
+        if(!user) {
+            throw new Error("Not logged in")
+        }
+
+        if(!init) {
+            init = {}
+        }
+        if(!init["headers"]) {
+            init["headers"] = {}
+        }
+        init["headers"]["Authorization"] = `Bearer ${user["token"]}`
+
+        return await fetchData(path, init)
+    }
+
+    /**
+     * Try to login to the active server with the passed credentials.
+     *
+     * @param email - The user's email.
+     * @param password - The user's password.
+     * @returns {Promise<void>}
+     */
+    const login = async (email, password) => {
+        console.debug("Contacting server to login...")
+        const data = await fetchData("POST", `/api/login`, {
+            "email": email,
+            "password": password,
+        })
+
+        console.debug("Storing login state...")
+        setUser({
+            email: data["user"]["email"],
+            isAdmin: data["user"]["isAdmin"],
+            username: data["user"]["username"],
+            token: data["access_token"],
+        })
+
+        console.info("Login successful!")
+    }
+
+    /**
+     * Logout from the currently active server.
+     */
+    const logout = () => {
+        console.debug("Clearing login state...")
+        setUser(null)
+        console.debug("Cleared login state!")
+
+        console.info("Logout successful!")
+    }
+
+    return (
+        <ContextUser.Provider value={{user, login, logout, fetchDataAuth}}>
+            {children}
+        </ContextUser.Provider>
+    )
+}

code/frontend/src/components/Layout.js

@@ -1,7 +1,8 @@
-import React from "react"
+import React, { useContext } from "react"
 import Style from "./Layout.module.css"
 import classNames from "classnames"
 import Sidebar from "./Sidebar"
+import ContextTheme from "../contexts/ContextTheme"
 
 
 /**
@@ -14,12 +15,14 @@ import Sidebar from "./Sidebar"
  * @constructor
  */
 export default function Layout({ children, className, ...props }) {
+    const { theme } = useContext(ContextTheme)
+
     return (
-        <div className={classNames(Style.Layout, className)} {...props}>
+        <div className={classNames(theme, Style.Layout, className)} {...props}>
             <Sidebar className={Style.LayoutSidebar}/>
-            <div className={Style.LayoutContent}>
+            <main className={Style.LayoutContent}>
                 {children}
-            </div>
+            </main>
         </div>
     )
 }

code/frontend/src/components/Layout.module.css

@@ -1,9 +1,12 @@
 .Layout {
-    width: 100%;
-    height: 100%;
+    height: 100vh;
+    width: 100vw;
+    padding: 16px;
+
+    background-color: var(--bg-primary);
+    color: var(--fg-primary);
 
     display: grid;
-
     grid-template-areas:
         "a b"
     ;

code/frontend/src/components/LoggedInUser.js

@@ -1,25 +1,30 @@
 import React, { useContext } from "react"
-import Style from "./LoggedInUser.module.css"
-import classNames from "classnames"
 import { FontAwesomeIcon } from "@fortawesome/react-fontawesome"
 import { faUser } from "@fortawesome/free-solid-svg-icons"
-import ContextLogin from "../contexts/ContextLogin"
+import ContextUser from "../contexts/ContextUser"
 
 
-export default function LoggedInUser({ children, className, ...props }) {
-    const {state} = useContext(ContextLogin);
+/**
+ * An element displaying inline the currently logged in user.
+ *
+ * @param props - Additional props to pass to the element.
+ * @returns {JSX.Element}
+ * @constructor
+ */
+export default function LoggedInUser({ ...props }) {
+    const {user} = useContext(ContextUser);
 
-    if(!state) {
+    if(!user) {
         return (
-            <i className={classNames(Style.LoggedInUser, className)} {...props}>
+            <i {...props}>
                 Not logged in
             </i>
         )
     }
 
     return (
-        <b className={classNames(Style.LoggedInUser, className)} {...props}>
-            <FontAwesomeIcon icon={faUser}/> {state.username}
+        <b {...props}>
+            <FontAwesomeIcon icon={faUser}/> {user.username}
         </b>
     )
 }

code/frontend/src/components/LoggedInUser.module.css

@@ -1,3 +0,0 @@
-.LoggedInUser {
-
-}

code/frontend/src/components/Logo.js

@@ -19,7 +19,7 @@ import classNames from "classnames"
 export default function Logo({ className, ...props }) {
     // I have no idea why IntelliJ is complaining about this line
     // It's perfectly fine!
-    const [theme, ] = useContext(ContextTheme)
+    const {theme} = useContext(ContextTheme)
 
     let logo;
     if(theme === "ThemeDark") {

code/frontend/src/components/RepositorySummary.module.css

@@ -27,10 +27,7 @@
 }
 
 .IconContainer {
-    margin-top: 5px;
-    margin-right: 15px;
-    margin-left: 5px;
-    margin-bottom: 5px;
+    margin: 5px 15px 5px 5px;
     width: 50px;
     height: 50px;
     border-radius: 50px;

code/frontend/src/components/SelectTheme.js

@@ -12,7 +12,7 @@ import ContextTheme from "../contexts/ContextTheme"
  * @constructor
  */
 export default function SelectTheme({ ...props }) {
-    const [theme, setTheme] = useContext(ContextTheme);
+    const {theme, setTheme} = useContext(ContextTheme);
 
     return (
         <Select value={theme} onChange={e => setTheme(e.target.value)} {...props}>

code/frontend/src/components/Sidebar.js

@@ -4,7 +4,7 @@ import classNames from "classnames"
 import Logo from "./Logo"
 import ButtonSidebar from "./ButtonSidebar"
 import { faCog, faExclamationTriangle, faFolder, faHome, faKey, faWrench } from "@fortawesome/free-solid-svg-icons"
-import ContextLogin from "../contexts/ContextLogin"
+import ContextUser from "../contexts/ContextUser"
 
 
 /**
@@ -17,13 +17,13 @@ import ContextLogin from "../contexts/ContextLogin"
  * @constructor
  */
 export default function Sidebar({ className, ...props }) {
-    const {state} = useContext(ContextLogin)
+    const {user} = useContext(ContextUser)
 
     return (
-        <div className={classNames(Style.Sidebar, className)} {...props}>
+        <aside className={classNames(Style.Sidebar, className)} {...props}>
             <Logo/>
             {
-                state ?
+                user ?
                 <Fragment>
                     <ButtonSidebar to={"/dashboard"} icon={faHome}>Dashboard</ButtonSidebar>
                     <ButtonSidebar to={"/repositories"} icon={faFolder}>Repositories</ButtonSidebar>
@@ -40,6 +40,6 @@ export default function Sidebar({ className, ...props }) {
                 <ButtonSidebar to={"/sandbox"} icon={faWrench}>Sandbox</ButtonSidebar>
                 : null
             }
-        </div>
+        </aside>
     )
 }

code/frontend/src/contexts/ContextLogin.js

@@ -1,21 +0,0 @@
-import {createContext} from "react";
-
-
-/**
- * A context containing an object with the following values:
- * - `state`: `null` if the user is not logged in, otherwise an object containing:
- *   - `server`: The base url of the N.E.S.T. backend
- *   - `email`: The email of the account the user is logged in as
- *   - `token`: The bearer token to use in authenticated API requests
- * - `working`: `true` if the login procedure is running, `false` otherwise
- * - `error`: `null` if no login error happened, an instance of {@link Error} otherwise.
- * - `login`: an async function which logs in the user if given the following parameters: `server, email, password`
- * - `logout`: a function which logs out the user
- * - `fetch_unauth`: a variant of {@link fetch} which uses `state.server` as the base url, allowing only the API path
- *   to be passed
- * - `fetch_auth`: a variant of {@link fetch_unauth} which automatically passes the correct `Authentication` header
- *
- * @type {React.Context}
- */
-const ContextLogin = createContext(null)
-export default ContextLogin

code/frontend/src/contexts/ContextServer.js

@@ -0,0 +1,22 @@
+import {createContext} from "react";
+
+
+/**
+ * A context containing an object with the following values:
+ * - `server`: the base URL of the currently active backend server
+ * - `setServer`: a function to change `server`
+ * - `fetchData`: a function to fetch JSON data from the backend server
+ *
+ * If accessed from outside a provider, the values will be:
+ * - `server`: `null`
+ * - `setServer`: a function showing an error in the console
+ * - `fetchData`: another function showing an error in the console
+ *
+ * @type {React.Context}
+ */
+const ContextServer = createContext({
+    server: null,
+    setServer: () => console.error("Trying to setServer while outside a ContextServer.Provider!"),
+    fetchData: () => console.error("Trying to fetchData while outside a ContextServer.Provider!"),
+})
+export default ContextServer

code/frontend/src/contexts/ContextTheme.js

@@ -2,11 +2,18 @@ import {createContext} from "react";
 
 
 /**
- * A context containing a list with the currently selected theme and the function to set a different one.
+ * A context containing an object with the following elements:
+ * - `theme` - A string containing the name of the current theme.
+ * - `setTheme` - A function that allows changing the `theme`.
  *
- * The function can be `undefined` if run outside a provider.
+ * If trying to access the context from outside a provider, the theme will be `ThemeDark`, and the function will display
+ * an error in the console.
  *
  * @type {React.Context}
  */
-const ContextTheme = createContext(["ThemeDark", undefined])
+const ContextTheme = createContext({
+    isSet: false,
+    theme: "ThemeDark",
+    setTheme: () => console.error("Trying to setTheme while outside a ContextTheme.Provider!")
+})
 export default ContextTheme

code/frontend/src/contexts/ContextUser.js

@@ -0,0 +1,26 @@
+import {createContext} from "react";
+
+
+/**
+ * A context containing an object with the following values:
+ * - `user`: an object containing data about the currently logged in user
+ * - `login`: a function accepting `email, password` as parameters which tries to login the user
+ * - `logout`: a function accepting no parameters which logs the user out
+ * - `fetchDataAuth`: a function with the same API as `fetchData` which fetches data from the server authenticating
+ *   as the logged in user.
+ *
+ * If accessed from outside a provider, the values will be:
+ * - `user`: `null`
+ * - `login`: a function showing an error in the console
+ * - `logout`: another function showing an error in the console
+ * - `fetchDataAuth`: yet another function showing an error in the console
+ *
+ * @type {React.Context}
+ */
+const ContextUser = createContext({
+    user: null,
+    login: () => console.error("Trying to login while outside a ContextUser.Provider!"),
+    logout: () => console.error("Trying to logout while outside a ContextUser.Provider!"),
+    fetchDataAuth: () => console.error("Trying to fetchDataAuth while outside a ContextUser.Provider!"),
+})
+export default ContextUser

code/frontend/src/hooks/useSavedLogin.js

@@ -1,82 +0,0 @@
-import {useState} from "react"
-import useLocalStorageState from "./useLocalStorageState"
-
-
-/**
- * Hook to place at the root to generate the contents of {@link ContextLogin}.
- */
-export default function useSavedLogin() {
-    const [state, setState] = useLocalStorageState("login", null)
-    const [working, setWorking] = useState(false)
-    const [error, setError] = useState(null)
-
-    const login = async (server, email, password) => {
-        setWorking(true)
-        try {
-            console.debug("Contacting server to login...")
-            const response = await fetch(`${server}/api/login`, {
-                method: "POST",
-                cache: "no-cache",
-                headers: {
-                    "Content-Type": "application/json",
-                },
-                body: JSON.stringify({
-                    "email": email,
-                    "password": password,
-                })
-            })
-
-            console.debug("Decoding server response...")
-            const data = await response.json()
-
-            console.debug("Ensuring the request was a success...")
-            if(data["result"] !== "success") {
-                // noinspection ExceptionCaughtLocallyJS
-                throw new Error(data["msg"])
-            }
-
-            console.debug("Storing login state...")
-            setState({
-                server: server,
-                email: data["user"]["email"],
-                isAdmin: data["user"]["isAdmin"],
-                username: data["user"]["username"],
-                token: data["access_token"],
-            })
-
-            console.debug("Clearing error...")
-            setError(null)
-
-            console.info("Login successful!")
-        } catch(e) {
-            console.error(`Caught error while trying to login: ${e}`)
-            setError(e)
-        } finally {
-            setWorking(false)
-        }
-    }
-
-    const logout = () => {
-        console.debug("Clearing login state...")
-        setState(null)
-        console.debug("Cleared login state!")
-
-        console.info("Logout successful!")
-    }
-
-    const fetch_unauth = async (path, init) => {
-        return await fetch(`${state["server"]}${path}`, init)
-    }
-
-    const fetch_auth = async (path, init) => {
-        if(typeof init["headers"] != "object") {
-            init["headers"] = {}
-        }
-        if(state) {
-            init["Authorization"] = `Bearer ${state["token"]}`
-        }
-        return await fetch_unauth(path, init)
-    }
-
-    return {state, working, error, login, logout, fetch_unauth, fetch_auth}
-}

code/frontend/src/hooks/useSavedTheme.js

@@ -1,12 +0,0 @@
-import useLocalStorageState from "./useLocalStorageState"
-
-
-/**
- * Hook with the same API as {@link React.useState} which stores the user's current theme setting, and syncs it to the
- * browser's {@link localStorage}.
- *
- * @returns {[string, function]}
- */
-export default function useSavedTheme() {
-    return useLocalStorageState("theme", "ThemeDark")
-}

code/frontend/src/index.css

@@ -24,6 +24,10 @@ h1, h2, h3, h4, h5, h6 {
     font-family: var(--font-title);
 }
 
+*[disabled] {
+    cursor: not-allowed;
+}
+
 .ThemeDark {
     --bg-primary: #3B7097;
     --fg-primary: #FFFFFF;

code/frontend/src/routes/PageDashboard.js

@@ -8,8 +8,8 @@ import InputWithIcon from "../components/InputWithIcon"
 import { faFolder, faPlus } from "@fortawesome/free-solid-svg-icons"
 import Radio from "../components/Radio"
 import Button from "../components/Button"
-import LabelledForm from "../components/LabelledForm"
-import Label from "../components/Label"
+import FormLabelled from "../components/FormLabelled"
+import FormLabel from "../components/FormLabel"
 
 
 export default function PageDashboard({ children, className, ...props }) {
@@ -34,11 +34,11 @@ export default function PageDashboard({ children, className, ...props }) {
                 🚧 Not implemented.
             </BoxFull>
             <BoxFull className={Style.CreateDialog} header={"Create repository"}>
-                <LabelledForm>
-                    <Label htmlFor={"repo-name"} text={"Repository name"}>
+                <FormLabelled>
+                    <FormLabel htmlFor={"repo-name"} text={"Repository name"}>
                         <InputWithIcon id={"repo-name"} icon={faFolder}/>
-                    </Label>
-                    <Label htmlFor={"filter-mode"} text={"Add tweets if they satisfy"}>
+                    </FormLabel>
+                    <FormLabel htmlFor={"filter-mode"} text={"Add tweets if they satisfy"}>
                         <label>
                             <Radio name={"filter-mode"} value={"or"}/> At least one filter
                         </label>
@@ -46,11 +46,11 @@ export default function PageDashboard({ children, className, ...props }) {
                         <label>
                             <Radio name={"filter-mode"} value={"and"}/> Every filter
                         </label>
-                    </Label>
+                    </FormLabel>
                     <Button style={{"gridColumn": "1 / 3"}} icon={faPlus} color={"Green"}>
                         Create repository
                     </Button>
-                </LabelledForm>
+                </FormLabelled>
             </BoxFull>
         </div>
     )

code/frontend/src/routes/PageLogin.js

@@ -2,71 +2,17 @@ import React, { useContext, useState } from "react"
 import Style from "./PageLogin.module.css"
 import classNames from "classnames"
 import BoxFull from "../components/BoxFull"
-import LabelledForm from "../components/LabelledForm"
-import Label from "../components/Label"
-import InputWithIcon from "../components/InputWithIcon"
-import { faArrowRight, faEnvelope, faGlobe, faKey } from "@fortawesome/free-solid-svg-icons"
-import Button from "../components/Button"
-import ContextLogin from "../contexts/ContextLogin"
+import ContextUser from "../contexts/ContextUser"
 import { useHistory } from "react-router"
+import BoxSetServer from "../components/BoxSetServer"
+import BoxLogin from "../components/BoxLogin"
 
 
 export default function PageLogin({ className, ...props }) {
-    // TODO: Change these presets before production
-    const [server, setServer] = useState("http://localhost:5000")
-    const [email, setEmail] = useState("admin@admin.com")
-    const [password, setPassword] = useState("password")
-    const {login, working, error} = useContext(ContextLogin)
-    const history = useHistory()
-
     return (
         <div className={classNames(Style.PageLogin, className)} {...props}>
-            <BoxFull header={"Login"}>
-                <LabelledForm>
-                    <Label text={"Server"} htmlFor={"login-server"}>
-                        <InputWithIcon
-                            id={"login-server"}
-                            name={"login-server"}
-                            value={server}
-                            onChange={e => setServer(e.target.value)}
-                            type={"url"}
-                            icon={faGlobe}
-                        />
-                    </Label>
-                    <Label text={"Email"} htmlFor={"login-email"}>
-                        <InputWithIcon
-                            id={"login-email"}
-                            name={"login-email"}
-                            value={email}
-                            onChange={e => setEmail(e.target.value)}
-                            type={"email"}
-                            icon={faEnvelope}
-                        />
-                    </Label>
-                    <Label text={"Password"} htmlFor={"login-password"}>
-                        <InputWithIcon
-                            id={"login-password"}
-                            name={"login-password"}
-                            value={password}
-                            onChange={e => setPassword(e.target.value)}
-                            type={"password"}
-                            icon={faKey}
-                        />
-                    </Label>
-                    <Button
-                        style={{"gridColumn": "1 / 3"}}
-                        onClick={async e => {
-                            await login(server, email, password)
-                            history.push("/dashboard")
-                        }}
-                        icon={faArrowRight}
-                        color={error ? "Green" : "Red"}
-                        disabled={working}
-                    >
-                        Login
-                    </Button>
-                </LabelledForm>
-            </BoxFull>
+            <BoxSetServer/>
+            <BoxLogin/>
         </div>
     )
 }

code/frontend/src/routes/PageRoot.js

@@ -1,10 +1,10 @@
 import React, { useContext } from "react"
-import ContextLogin from "../contexts/ContextLogin"
+import ContextUser from "../contexts/ContextUser"
 import { Redirect } from "react-router"
 
 
 export default function PageRoot() {
-    const {state} = useContext(ContextLogin)
+    const {state} = useContext(ContextUser)
 
     if(!state) {
         return <Redirect to={"/login"}/>