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diff --git a/keyserver/src/creators/message-report-creator.js b/keyserver/src/creators/message-report-creator.js
new file mode 100644
--- /dev/null
+++ b/keyserver/src/creators/message-report-creator.js
@@ -0,0 +1,131 @@
+// @flow
+
+import bots from 'lib/facts/bots';
+import { createMessageReply } from 'lib/shared/message-utils';
+import { type MessageReportCreationRequest } from 'lib/types/message-report-types';
+import { messageTypes } from 'lib/types/message-types';
+import type { ServerThreadInfo } from 'lib/types/thread-types';
+import { ServerError } from 'lib/utils/errors';
+import { promiseAll } from 'lib/utils/promises';
+
+import { createCommbotThread } from '../bots/commbot';
+import { fetchMessageInfoByID } from '../fetchers/message-fetchers';
+import {
+ fetchPersonalThreadID,
+ serverThreadInfoFromMessageInfo,
+} from '../fetchers/thread-fetchers';
+import {
+ fetchUsername,
+ fetchKeyserverAdminID,
+} from '../fetchers/user-fetchers';
+import { createBotViewer } from '../session/bots';
+import type { Viewer } from '../session/viewer';
+import createMessages from './message-creator';
+
+const { commbot } = bots;
+
+async function createMessageReport(
+ viewer: Viewer,
+ request: MessageReportCreationRequest,
+) {
+ const [
+ reportedMessageText,
+ viewerUsername,
+ commbotThreadID,
+ reportedThread,
+ reportedMessageAuthor,
+ ] = await fetchMessageReportData(viewer, request);
+
+ const reportMessage = getCommbotMessage(
+ viewerUsername,
+ reportedMessageAuthor,
+ reportedThread?.name,
+ reportedMessageText,
+ );
+ const time = Date.now();
+ const result = await createMessages(createBotViewer(commbot.userID), [
+ {
+ type: messageTypes.TEXT,
+ threadID: commbotThreadID,
+ creatorID: commbot.userID,
+ time,
+ text: reportMessage,
+ },
+ ]);
+ if (result.length === 0) {
+ throw new ServerError('message_report_failed');
+ }
+}
+
+async function fetchMessageReportData(
+ viewer: Viewer,
+ request: MessageReportCreationRequest,
+): Promise<[?string, ?string, string, ?ServerThreadInfo, ?string]> {
+ const keyserverAdminIDPromise = fetchKeyserverAdminID();
+ const reportedMessagePromise = fetchMessageInfoByID(
+ viewer,
+ request.messageID,
+ );
+ const promises = {};
+
+ promises.viewerUsername = fetchUsername(viewer.id);
+
+ const keyserverAdminID = await keyserverAdminIDPromise;
+ if (!keyserverAdminID) {
+ throw new ServerError('keyserver_admin_not_found');
+ }
+ promises.commbotThreadID = getCommbotThreadID(keyserverAdminID);
+
+ const reportedMessage = await reportedMessagePromise;
+ promises.reportedThread = serverThreadInfoFromMessageInfo(reportedMessage);
+ const reportedMessageAuthorID = reportedMessage?.creatorID;
+ if (reportedMessageAuthorID) {
+ promises.reportedMessageAuthor = fetchUsername(reportedMessageAuthorID);
+ }
+
+ const reportedMessageText =
+ reportedMessage?.type === 0 ? reportedMessage.text : null;
+
+ const {
+ viewerUsername,
+ commbotThreadID,
+ reportedThread,
+ reportedMessageAuthor,
+ } = await promiseAll(promises);
+
+ return [
+ reportedMessageText,
+ viewerUsername,
+ commbotThreadID,
+ reportedThread,
+ reportedMessageAuthor,
+ ];
+}
+
+async function getCommbotThreadID(userID: string): Promise<string> {
+ let commbotThreadID = await fetchPersonalThreadID(userID, commbot.userID);
+ if (!commbotThreadID) {
+ commbotThreadID = createCommbotThread(userID);
+ }
+ return commbotThreadID;
+}
+
+function getCommbotMessage(
+ reporterUsername: ?string,
+ messageAuthorUsername: ?string,
+ threadName: ?string,
+ message: ?string,
+): string {
+ reporterUsername = reporterUsername ?? '[null]';
+ const messageAuthor = messageAuthorUsername
+ ? `${messageAuthorUsername}’s`
+ : 'this';
+ const thread = threadName ? `chat titled "${threadName}"` : 'chat';
+ const reply = message ? createMessageReply(message) : 'non-text message';
+ return (
+ `user ${reporterUsername} reported ${messageAuthor} message in ${thread}\n` +
+ reply
+ );
+}
+
+export default createMessageReport;
diff --git a/keyserver/src/fetchers/thread-fetchers.js b/keyserver/src/fetchers/thread-fetchers.js
--- a/keyserver/src/fetchers/thread-fetchers.js
+++ b/keyserver/src/fetchers/thread-fetchers.js
@@ -7,6 +7,7 @@
getCommunity,
} from 'lib/shared/thread-utils';
import { hasMinCodeVersion } from 'lib/shared/version-utils';
+import type { RawMessageInfo, MessageInfo } from 'lib/types/message-types';
import {
threadTypes,
type ThreadType,
@@ -240,6 +241,17 @@
return threads[0]?.id.toString();
}
+async function serverThreadInfoFromMessageInfo(
+ message: ?RawMessageInfo | MessageInfo,
+): Promise<?ServerThreadInfo> {
+ const threadID = message?.threadID;
+ if (threadID) {
+ const threads = await fetchServerThreadInfos(SQL`t.id = ${threadID}`);
+ return threads.threadInfos[threadID];
+ }
+ return null;
+}
+
export {
fetchServerThreadInfos,
fetchThreadInfos,
@@ -249,4 +261,5 @@
determineThreadAncestry,
personalThreadQuery,
fetchPersonalThreadID,
+ serverThreadInfoFromMessageInfo,
};
diff --git a/lib/types/message-report-types.js b/lib/types/message-report-types.js
new file mode 100644
--- /dev/null
+++ b/lib/types/message-report-types.js
@@ -0,0 +1,5 @@
+// @flow
+
+export type MessageReportCreationRequest = {
+ +messageID: string,
+};

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