Remove non-functional DuckDuckGo Autocomplete Provider

src/SlashCommands.tsx

@@ -245,21 +245,6 @@ export const Commands = [
         },
         category: CommandCategories.messages,
     }),
-    new Command({
-        command: 'ddg',
-        args: '<query>',
-        description: _td('Searches DuckDuckGo for results'),
-        runFn: function() {
-            // TODO Don't explain this away, actually show a search UI here.
-            Modal.createTrackedDialog('Slash Commands', '/ddg is not a command', ErrorDialog, {
-                title: _t('/ddg is not a command'),
-                description: _t('To use it, just wait for autocomplete results to load and tab through them.'),
-            });
-            return success();
-        },
-        category: CommandCategories.actions,
-        hideCompletionAfterSpace: true,
-    }),
     new Command({
         command: 'upgraderoom',
         args: '<new_version>',

src/autocomplete/Autocompleter.ts

@@ -20,7 +20,6 @@ import { Room } from 'matrix-js-sdk/src/models/room';
 
 import CommandProvider from './CommandProvider';
 import CommunityProvider from './CommunityProvider';
-import DuckDuckGoProvider from './DuckDuckGoProvider';
 import RoomProvider from './RoomProvider';
 import UserProvider from './UserProvider';
 import EmojiProvider from './EmojiProvider';
@@ -55,7 +54,6 @@ const PROVIDERS = [
     EmojiProvider,
     NotifProvider,
     CommandProvider,
-    DuckDuckGoProvider,
 ];
 
 if (SpaceStore.spacesEnabled) {

src/autocomplete/CommandProvider.tsx

@@ -53,7 +53,7 @@ export default class CommandProvider extends AutocompleteProvider {
             // The input looks like a command with arguments, perform exact match
             const name = command[1].substr(1); // strip leading `/`
             if (CommandMap.has(name) && CommandMap.get(name).isEnabled()) {
-                // some commands, namely `me` and `ddg` don't suit having the usage shown whilst typing their arguments
+                // some commands, namely `me` don't suit having the usage shown whilst typing their arguments
                 if (CommandMap.get(name).hideCompletionAfterSpace) return [];
                 matches = [CommandMap.get(name)];
             }

src/autocomplete/DuckDuckGoProvider.tsx

@@ -1,115 +0,0 @@
-/*
-Copyright 2016 Aviral Dasgupta
-Copyright 2017 Vector Creations Ltd
-Copyright 2017, 2018 New Vector Ltd
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-import React from 'react';
-import { _t } from '../languageHandler';
-import AutocompleteProvider from './AutocompleteProvider';
-
-import { TextualCompletion } from './Components';
-import { ICompletion, ISelectionRange } from "./Autocompleter";
-
-const DDG_REGEX = /\/ddg\s+(.+)$/g;
-const REFERRER = 'vector';
-
-export default class DuckDuckGoProvider extends AutocompleteProvider {
-    constructor() {
-        super(DDG_REGEX);
-    }
-
-    static getQueryUri(query: string) {
-        return `https://api.duckduckgo.com/?q=${encodeURIComponent(query)}`
-         + `&format=json&no_redirect=1&no_html=1&t=${encodeURIComponent(REFERRER)}`;
-    }
-
-    async getCompletions(
-        query: string,
-        selection: ISelectionRange,
-        force = false,
-        limit = -1,
-    ): Promise<ICompletion[]> {
-        const { command, range } = this.getCurrentCommand(query, selection);
-        if (!query || !command) {
-            return [];
-        }
-
-        const response = await fetch(DuckDuckGoProvider.getQueryUri(command[1]), {
-            method: 'GET',
-        });
-        const json = await response.json();
-        const maxLength = limit > -1 ? limit : json.Results.length;
-        const results = json.Results.slice(0, maxLength).map((result) => {
-            return {
-                completion: result.Text,
-                component: (
-                    <TextualCompletion
-                        title={result.Text}
-                        description={result.Result} />
-                ),
-                range,
-            };
-        });
-        if (json.Answer) {
-            results.unshift({
-                completion: json.Answer,
-                component: (
-                    <TextualCompletion
-                        title={json.Answer}
-                        description={json.AnswerType} />
-                ),
-                range,
-            });
-        }
-        if (json.RelatedTopics && json.RelatedTopics.length > 0) {
-            results.unshift({
-                completion: json.RelatedTopics[0].Text,
-                component: (
-                    <TextualCompletion
-                        title={json.RelatedTopics[0].Text} />
-                ),
-                range,
-            });
-        }
-        if (json.AbstractText) {
-            results.unshift({
-                completion: json.AbstractText,
-                component: (
-                    <TextualCompletion
-                        title={json.AbstractText} />
-                ),
-                range,
-            });
-        }
-        return results;
-    }
-
-    getName() {
-        return '🔍 ' + _t('Results from DuckDuckGo');
-    }
-
-    renderCompletions(completions: React.ReactNode[]): React.ReactNode {
-        return (
-            <div
-                className="mx_Autocomplete_Completion_container_block"
-                role="presentation"
-                aria-label={_t("DuckDuckGo Results")}
-            >
-                { completions }
-            </div>
-        );
-    }
-}

src/i18n/strings/en_EN.json

@@ -426,9 +426,6 @@
     "Prepends ( ͡° ͜ʖ ͡°) to a plain-text message": "Prepends ( ͡° ͜ʖ ͡°) to a plain-text message",
     "Sends a message as plain text, without interpreting it as markdown": "Sends a message as plain text, without interpreting it as markdown",
     "Sends a message as html, without interpreting it as markdown": "Sends a message as html, without interpreting it as markdown",
-    "Searches DuckDuckGo for results": "Searches DuckDuckGo for results",
-    "/ddg is not a command": "/ddg is not a command",
-    "To use it, just wait for autocomplete results to load and tab through them.": "To use it, just wait for autocomplete results to load and tab through them.",
     "Upgrades a room to a new version": "Upgrades a room to a new version",
     "You do not have the required permissions to use this command.": "You do not have the required permissions to use this command.",
     "Changes your display nickname": "Changes your display nickname",
@@ -3002,8 +2999,6 @@
     "Commands": "Commands",
     "Command Autocomplete": "Command Autocomplete",
     "Community Autocomplete": "Community Autocomplete",
-    "Results from DuckDuckGo": "Results from DuckDuckGo",
-    "DuckDuckGo Results": "DuckDuckGo Results",
     "Emoji": "Emoji",
     "Emoji Autocomplete": "Emoji Autocomplete",
     "Notify the whole room": "Notify the whole room",