Feat : choose homeserver for login

config.sample.json

@@ -8,6 +8,18 @@
             "base_url": "https://matrix.i.tchap.gouv.fr"
         }
     },
+    "homeserver_list": [
+        {
+            "base_url": "https://matrix.i.tchap.gouv.fr",
+            "server_name": "Internes - preprod",
+            "email_examples": "hakim@beta.gouv.fr, alice@interieur.gouv.fr, ..."
+        },
+        {
+            "base_url": "https://matrix.e.tchap.gouv.fr",
+            "server_name": "Externes - preprod",
+            "email_examples": "nina@soprasteria.com, paul@athos.fr, ..."
+        }
+    ],
     "disable_custom_urls": false,
     "disable_guests": true,
     "disable_login_language_selector": false,

src/components/views/dialogs/TchapServerPickerDialog.tsx

@@ -0,0 +1,125 @@
+/*
+Copyright 2020-2021 The Matrix.org Foundation C.I.C.
+
+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 SdkConfig from 'matrix-react-sdk/src/SdkConfig';
+import { _t } from "matrix-react-sdk/src/languageHandler";
+// We import components from the react-sdk like this to avoid " Attempted to get a component before a skin
+// has been loaded"
+import * as sdk from 'matrix-react-sdk/src/index';
+import AutoDiscoveryUtils, { ValidatedServerConfig } from "matrix-react-sdk/src/utils/AutoDiscoveryUtils";
+
+interface IProps {
+    title?: string;
+    serverConfig: ValidatedServerConfig;
+    onFinished(config?: ValidatedServerConfig): void;
+}
+
+interface IState {
+    selectedHomeServerUrl: string;
+}
+
+export default class TchapServerPickerDialog extends React.PureComponent<IProps, IState> {
+    static replaces = 'ServerPickerDialog';
+
+    homeServerList;
+
+    constructor(props) {
+        super(props);
+        this.homeServerList = SdkConfig.get()['homeserver_list'];
+        this.state = {
+            selectedHomeServerUrl: props.serverConfig.hsUrl,
+        };
+    }
+
+    private findHomeServerInListByUrl = url => {
+        return this.homeServerList.find(homeServer => homeServer.base_url === url);
+    };
+
+    private onSubmit = async (ev) => {
+        ev.preventDefault();
+
+        const selectedHomeServer = this.findHomeServerInListByUrl(this.state.selectedHomeServerUrl);
+
+        // Fake the discovery process, we don't need it since we know our own servers.
+        const discoveryResult = {
+            "m.homeserver": {
+                state: "SUCCESS",
+                error: null,
+                base_url: selectedHomeServer.base_url,
+                server_name: selectedHomeServer.server_name,
+            },
+            "m.identity_server": {
+                state: "PROMPT",
+                error: null,
+                base_url: selectedHomeServer.base_url, // On Tchap our Identity server urls and home server urls are the same
+                server_name: selectedHomeServer.server_name,
+            },
+        };
+        // Then continue the same flow as the original ServerPickerDialog.
+        const validatedConf = AutoDiscoveryUtils.buildValidatedConfigFromDiscovery(
+            discoveryResult['m.homeserver'].server_name, discoveryResult);
+        this.props.onFinished(validatedConf);
+    };
+
+    private onHomeServerSelected = (homeServerUrl) => {
+        this.setState({
+            selectedHomeServerUrl: homeServerUrl,
+        });
+    };
+
+    public render() {
+        // Imports
+        const BaseDialog = sdk.getComponent('dialogs.BaseDialog');
+        const AccessibleButton = sdk.getComponent('elements.AccessibleButton');
+        const StyledRadioGroup = sdk.getComponent('elements.StyledRadioGroup');
+
+        const radioButtonOptions = this.homeServerList.map(homeServer => {
+            return {
+                value: homeServer.base_url,
+                label: <span>{ homeServer.server_name }</span>,
+                description: <span> { _t("Examples:") } { homeServer.email_examples }</span>,
+            };
+        });
+
+        return <BaseDialog
+            title={this.props.title || _t("Sign into your homeserver")}
+            className="mx_ServerPickerDialog"
+            contentId="mx_ServerPickerDialog"
+            onFinished={this.props.onFinished}
+            fixedWidth={false}
+            hasCancel={true}
+        >
+            <form>
+                <div>
+                    <label htmlFor="homeservers"> { _t("Choose a homeserver :") }</label>
+                </div>
+                <div>
+                    <StyledRadioGroup
+                        name="homeservers"
+                        value={this.state.selectedHomeServerUrl}
+                        onChange={this.onHomeServerSelected}
+                        definitions={radioButtonOptions}
+                    />
+                </div>
+
+                <AccessibleButton className="mx_ServerPickerDialog_continue" kind="primary" onClick={this.onSubmit}>
+                    { _t("Continue") }
+                </AccessibleButton>
+            </form>
+        </BaseDialog>;
+    }
+}

src/i18n/strings/en_EN.json

@@ -32,5 +32,7 @@
     "Explore rooms": "Explore rooms",
     "Username": "Email",
     "Username_comments": "We use Email to login in Tchap. The Login code accepts both username and email. So the simplest change for us to force login by email is to just rename the Username field to Email.",
-    "Welcome to Tchap": "Bienvenue sur Tchap"
+    "Welcome to Tchap": "Bienvenue sur Tchap",
+    "Examples:": "Examples:",
+    "Choose a homeserver :": "Choose a homeserver :"
 }

src/i18n/strings/fr.json

@@ -39,5 +39,7 @@
     "Previous recently visited room or community": "Salon ou communauté précédemment visité",
     "Username": "E-mail",
     "Username_comments": "We use E-mail to login in Tchap. The Login code accepts both username and email. So the simplest change for us to force login by email is to just rename the Username field to Email.",
-    "Welcome to Tchap": "Bienvenue sur Tchap"
+    "Welcome to Tchap": "Bienvenue sur Tchap",
+    "Examples:": "Exemples :",
+    "Choose a homeserver :": "Choisissez un serveur d'accueil :"
 }