Copy the polls constants to matrix-js-sdk from matrix-react-sdk (#2073)

src/@types/polls.ts

@@ -0,0 +1,92 @@
+/*
+Copyright 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 { UnstableValue } from "../NamespacedValue";
+import { IContent } from "../models/event";
+
+export const POLL_START_EVENT_TYPE = new UnstableValue(
+    "m.poll.start", "org.matrix.msc3381.poll.start");
+
+export const POLL_RESPONSE_EVENT_TYPE = new UnstableValue(
+    "m.poll.response", "org.matrix.msc3381.poll.response");
+
+export const POLL_END_EVENT_TYPE = new UnstableValue(
+    "m.poll.end", "org.matrix.msc3381.poll.end");
+
+export const POLL_KIND_DISCLOSED = new UnstableValue(
+    "m.poll.disclosed", "org.matrix.msc3381.poll.disclosed");
+
+export const POLL_KIND_UNDISCLOSED = new UnstableValue(
+    "m.poll.undisclosed", "org.matrix.msc3381.poll.undisclosed");
+
+// TODO: [TravisR] Use extensible events library when ready
+export const TEXT_NODE_TYPE = new UnstableValue("m.text", "org.matrix.msc1767.text");
+
+export interface IPollAnswer extends IContent {
+    id: string;
+    [TEXT_NODE_TYPE.name]: string;
+}
+
+export interface IPollContent extends IContent {
+    [POLL_START_EVENT_TYPE.name]: {
+        kind: string; // disclosed or undisclosed (untypeable for now)
+        question: {
+            [TEXT_NODE_TYPE.name]: string;
+        };
+        answers: IPollAnswer[];
+    };
+    [TEXT_NODE_TYPE.name]: string;
+}
+
+export interface IPollResponseContent extends IContent {
+    [POLL_RESPONSE_EVENT_TYPE.name]: {
+        answers: string[];
+    };
+    "m.relates_to": {
+        "event_id": string;
+        "rel_type": string;
+    };
+}
+
+export interface IPollEndContent extends IContent {
+    [POLL_END_EVENT_TYPE.name]: {};
+    "m.relates_to": {
+        "event_id": string;
+        "rel_type": string;
+    };
+}
+
+export function makePollContent(
+    question: string,
+    answers: string[],
+    kind: string,
+): IPollContent {
+    question = question.trim();
+    answers = answers.map(a => a.trim()).filter(a => !!a);
+    return {
+        [TEXT_NODE_TYPE.name]:
+            `${question}\n${answers.map((a, i) => `${i + 1}. ${a}`).join('\n')}`,
+        [POLL_START_EVENT_TYPE.name]: {
+            kind: kind,
+            question: {
+                [TEXT_NODE_TYPE.name]: question,
+            },
+            answers: answers.map(
+                (a, i) => ({ id: `${i}-${a}`, [TEXT_NODE_TYPE.name]: a }),
+            ),
+        },
+    };
+}