Implement basic solution

src/api/models/dto/GenreWithTitles.ts

+import {Genre} from "../Genre";
+import {Title} from "../Title";
+
+export interface GenreWithTitles {
+    genre: Genre,
+    titles: Title[],
+}

src/index.css

-body {
-  margin: 0;
-  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
-    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
-    sans-serif;
-  -webkit-font-smoothing: antialiased;
-  -moz-osx-font-smoothing: grayscale;
-}
-
-code {
-  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
-    monospace;
-}

src/index.tsx

+import {produce} from 'immer'
 import React from 'react';
 import ReactDOM from 'react-dom';
-import './index.css';
+
+import {defaults} from 'react-sweet-state';
 import App from './App';
 import * as serviceWorker from './serviceWorker';
 
+defaults.devtools = process.env.NODE_ENV !== "production";
+defaults.mutator = (currentState, producer) => produce(currentState, producer)
+
 ReactDOM.render(
     <React.StrictMode>
         <App/>

src/locale/selectLocaleData.ts

+import {LocalizedData} from "../api/models/LocalizedData";
+
+export interface Locale {
+    language: string,
+    region: string
+}
+
+export enum LocalePriority {
+    REGION_ONLY,
+    REGION_BEFORE_LOCALE,
+    LOCALE_BEFORE_REGION
+}
+
+function filterVersions<T extends LocalizedData>(locale: Locale, method: LocalePriority, data: T[]): T | undefined {
+    switch (method) {
+        case LocalePriority.REGION_ONLY:
+            return data.find((el) => {
+                return (el.region === locale.region);
+            });
+        case LocalePriority.REGION_BEFORE_LOCALE:
+            return data.sort((a, b) => (+b.languages.includes(locale.language)) - (+a.languages.includes(locale.language)))
+                .find((el) => el.region === locale.region);
+        case LocalePriority.LOCALE_BEFORE_REGION:
+            return data.sort((a, b) => (+(b.region === locale.region)) - (+(a.region === locale.region)))
+                .find((el) => el.languages.includes(locale.language));
+
+    }
+}
+
+export function selectLocaleVersion<T extends LocalizedData>(locale: Locale, method: LocalePriority, data: T[]): T | null {
+    return filterVersions(locale, method, data.filter(it => it.kind === "localized"))
+        || data.find(it => it.kind === "primary")
+        || data.find(it => it.kind === "original")
+        || null;
+}

src/logo.svg

-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 841.9 595.3">
-    <g fill="#61DAFB">
-        <path d="M666.3 296.5c0-32.5-40.7-63.3-103.1-82.4 14.4-63.6 8-114.2-20.2-130.4-6.5-3.8-14.1-5.6-22.4-5.6v22.3c4.6 0 8.3.9 11.4 2.6 13.6 7.8 19.5 37.5 14.9 75.7-1.1 9.4-2.9 19.3-5.1 29.4-19.6-4.8-41-8.5-63.5-10.9-13.5-18.5-27.5-35.3-41.6-50 32.6-30.3 63.2-46.9 84-46.9V78c-27.5 0-63.5 19.6-99.9 53.6-36.4-33.8-72.4-53.2-99.9-53.2v22.3c20.7 0 51.4 16.5 84 46.6-14 14.7-28 31.4-41.3 49.9-22.6 2.4-44 6.1-63.6 11-2.3-10-4-19.7-5.2-29-4.7-38.2 1.1-67.9 14.6-75.8 3-1.8 6.9-2.6 11.5-2.6V78.5c-8.4 0-16 1.8-22.6 5.6-28.1 16.2-34.4 66.7-19.9 130.1-62.2 19.2-102.7 49.9-102.7 82.3 0 32.5 40.7 63.3 103.1 82.4-14.4 63.6-8 114.2 20.2 130.4 6.5 3.8 14.1 5.6 22.5 5.6 27.5 0 63.5-19.6 99.9-53.6 36.4 33.8 72.4 53.2 99.9 53.2 8.4 0 16-1.8 22.6-5.6 28.1-16.2 34.4-66.7 19.9-130.1 62-19.1 102.5-49.9 102.5-82.3zm-130.2-66.7c-3.7 12.9-8.3 26.2-13.5 39.5-4.1-8-8.4-16-13.1-24-4.6-8-9.5-15.8-14.4-23.4 14.2 2.1 27.9 4.7 41 7.9zm-45.8 106.5c-7.8 13.5-15.8 26.3-24.1 38.2-14.9 1.3-30 2-45.2 2-15.1 0-30.2-.7-45-1.9-8.3-11.9-16.4-24.6-24.2-38-7.6-13.1-14.5-26.4-20.8-39.8 6.2-13.4 13.2-26.8 20.7-39.9 7.8-13.5 15.8-26.3 24.1-38.2 14.9-1.3 30-2 45.2-2 15.1 0 30.2.7 45 1.9 8.3 11.9 16.4 24.6 24.2 38 7.6 13.1 14.5 26.4 20.8 39.8-6.3 13.4-13.2 26.8-20.7 39.9zm32.3-13c5.4 13.4 10 26.8 13.8 39.8-13.1 3.2-26.9 5.9-41.2 8 4.9-7.7 9.8-15.6 14.4-23.7 4.6-8 8.9-16.1 13-24.1zM421.2 430c-9.3-9.6-18.6-20.3-27.8-32 9 .4 18.2.7 27.5.7 9.4 0 18.7-.2 27.8-.7-9 11.7-18.3 22.4-27.5 32zm-74.4-58.9c-14.2-2.1-27.9-4.7-41-7.9 3.7-12.9 8.3-26.2 13.5-39.5 4.1 8 8.4 16 13.1 24 4.7 8 9.5 15.8 14.4 23.4zM420.7 163c9.3 9.6 18.6 20.3 27.8 32-9-.4-18.2-.7-27.5-.7-9.4 0-18.7.2-27.8.7 9-11.7 18.3-22.4 27.5-32zm-74 58.9c-4.9 7.7-9.8 15.6-14.4 23.7-4.6 8-8.9 16-13 24-5.4-13.4-10-26.8-13.8-39.8 13.1-3.1 26.9-5.8 41.2-7.9zm-90.5 125.2c-35.4-15.1-58.3-34.9-58.3-50.6 0-15.7 22.9-35.6 58.3-50.6 8.6-3.7 18-7 27.7-10.1 5.7 19.6 13.2 40 22.5 60.9-9.2 20.8-16.6 41.1-22.2 60.6-9.9-3.1-19.3-6.5-28-10.2zM310 490c-13.6-7.8-19.5-37.5-14.9-75.7 1.1-9.4 2.9-19.3 5.1-29.4 19.6 4.8 41 8.5 63.5 10.9 13.5 18.5 27.5 35.3 41.6 50-32.6 30.3-63.2 46.9-84 46.9-4.5-.1-8.3-1-11.3-2.7zm237.2-76.2c4.7 38.2-1.1 67.9-14.6 75.8-3 1.8-6.9 2.6-11.5 2.6-20.7 0-51.4-16.5-84-46.6 14-14.7 28-31.4 41.3-49.9 22.6-2.4 44-6.1 63.6-11 2.3 10.1 4.1 19.8 5.2 29.1zm38.5-66.7c-8.6 3.7-18 7-27.7 10.1-5.7-19.6-13.2-40-22.5-60.9 9.2-20.8 16.6-41.1 22.2-60.6 9.9 3.1 19.3 6.5 28.1 10.2 35.4 15.1 58.3 34.9 58.3 50.6-.1 15.7-23 35.6-58.4 50.6zM320.8 78.4z"/>
-        <circle cx="420.9" cy="296.5" r="45.7"/>
-        <path d="M520.5 78.1z"/>
-    </g>
-</svg>

src/mime/PlayabilityRating.ts

+export enum PlayabilityRating {
+    UNLIKELY = 0,
+    MAYBE = 1,
+    PROBABLY = 2,
+}

src/mime/usePlayabilityRating.ts

+import {useRef} from "react";
+import {Media} from "../api/models/Media";
+import {PlayabilityRating} from "./PlayabilityRating";
+import {videoMimeString} from "./videoMimeString";
+
+export const usePlayabilityRating = () => {
+    const mediaElement = useRef(document.createElement("video")).current;
+    return (media: Media) => {
+        switch (mediaElement.canPlayType(videoMimeString(media))) {
+            case "":
+                return PlayabilityRating.UNLIKELY;
+            case "maybe":
+                return PlayabilityRating.MAYBE;
+            case "probably":
+                return PlayabilityRating.PROBABLY;
+        }
+    }
+}

src/mime/videoMimeString.ts

+import {Media} from "../api/models/Media";
+
+export const videoMimeString = (media: Media) =>
+    `${media.mime}; codecs="${media.codecs.join(", ")}"`;

src/request/RequestClient.ts

+import {RequestError} from "./RequestError";
+import {RequestErrorKind} from "./RequestErrorKind";
+
+export class RequestClient {
+    private baseUrl: string
+
+    constructor(baseUrl: string) {
+        this.baseUrl = baseUrl;
+    }
+
+    protected async request<T>(path: string, headers?: RequestInit): Promise<T> {
+        const url = new URL(path, this.baseUrl).toString();
+        const response = await fetch(url, headers);
+        if (response.ok) {
+            return await response.json();
+        } else {
+            if (response.status in RequestErrorKind) {
+                throw new RequestError(response.statusText, response.status)
+            } else {
+                throw new RequestError(response.statusText, RequestErrorKind.UnknownError)
+            }
+        }
+    }
+}
+

src/request/RequestError.ts

+import {RequestErrorKind} from "./RequestErrorKind";
+
+export class RequestError extends Error {
+    public kind: RequestErrorKind;
+    public message: string;
+
+    constructor(message: string, kind: RequestErrorKind) {
+        super(`RequestError ${kind}: ${message}`);
+        this.kind = kind;
+        this.message = message;
+    }
+}

src/request/RequestErrorKind.ts

+export enum RequestErrorKind {
+    UnknownError = 0,
+    BadRequest = 400,
+    Unauthorized = 401,
+    PaymentRequired = 402,
+    Forbidden = 403,
+    NotFound = 404,
+    MethodNotAllowed = 405,
+    NotAcceptable = 406,
+    ProxyAuthenticationRequired = 407,
+    RequestTimeout = 408,
+    Conflict = 409,
+    Gone = 410,
+    LengthRequired = 411,
+    PreconditionFailed = 412,
+    PayloadTooLarge = 413,
+    UnsupportedMediaType = 415,
+    RangeNotSatisfiable = 416,
+    ExpectationFailed = 417,
+    IAmATeapot = 418,
+    MisdirectedRequest = 421,
+    UnprocessableEntity = 422,
+    Locked = 423,
+    FailedDeependency = 424,
+    TooEarly = 425,
+    UpgradeRequired = 426,
+    PreconditionRequired = 428,
+    TooManyRequests = 429,
+    RequestHeaderFieldsTooLarge = 431,
+    UnavailableForLegalReasons = 451,
+    InternalServerError = 500,
+    NotImplemented = 501,
+    BadGateway = 502,
+    ServiceUnavailable = 503,
+    GatewayTimeout = 504,
+    HttpVersionNotSupported = 505,
+    VariantAlsoNegotiates = 506,
+    InsufficientStorage = 507,
+    LoopDetected = 508,
+    NotExtended = 510,
+    NetworkAuthenticationRequired = 511
+}

src/util/sortLexically.ts

+export const sortLexicallyAsc = <T>(accessor: ((data: T) => string) = String):
+    (a: T, b: T) => number => (a: T, b: T) => accessor(a).localeCompare(accessor(b));
+
+export const sortLexicallyDesc = <T>(accessor: ((data: T) => string) = String):
+    (a: T, b: T) => number => (a: T, b: T) => accessor(b).localeCompare(accessor(a));

src/util/sortNumerically.ts

+export const sortNumericallyAsc = <T>(accessor: ((data: T) => number) = Number):
+    (a: T, b: T) => number => (a: T, b: T) => accessor(a) - accessor(b);
+
+export const sortNumericallyDesc = <T>(accessor: ((data: T) => number) = Number):
+    (a: T, b: T) => number => (a: T, b: T) => accessor(b) - accessor(a);