From 99cf08ac38bdee25d07f27a3d9bb5d74199d106c Mon Sep 17 00:00:00 2001
From: Amit Yadav <iit.amit@gmail.com>
Date: Wed, 18 Jan 2017 18:38:31 +0530
Subject: Message Editing and Deleting permissions (#4692)

---
 webapp/utils/constants.jsx  |  7 +++++++
 webapp/utils/post_utils.jsx | 41 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 48 insertions(+)

(limited to 'webapp/utils')

diff --git a/webapp/utils/constants.jsx b/webapp/utils/constants.jsx
index c8ac74a82..6377f27f2 100644
--- a/webapp/utils/constants.jsx
+++ b/webapp/utils/constants.jsx
@@ -860,6 +860,13 @@ export const Constants = {
     PERMISSIONS_ALL: 'all',
     PERMISSIONS_TEAM_ADMIN: 'team_admin',
     PERMISSIONS_SYSTEM_ADMIN: 'system_admin',
+    PERMISSIONS_DELETE_POST_ALL: 'all',
+    PERMISSIONS_DELETE_POST_TEAM_ADMIN: 'team_admin',
+    PERMISSIONS_DELETE_POST_SYSTEM_ADMIN: 'system_admin',
+    ALLOW_EDIT_POST_ALWAYS: 'always',
+    ALLOW_EDIT_POST_NEVER: 'never',
+    ALLOW_EDIT_POST_TIME_LIMIT: 'time_limit',
+    DEFAULT_POST_EDIT_TIME_LIMIT: 300,
     MENTION_CHANNELS: 'mention.channels',
     MENTION_MORE_CHANNELS: 'mention.morechannels',
     MENTION_MEMBERS: 'mention.members',
diff --git a/webapp/utils/post_utils.jsx b/webapp/utils/post_utils.jsx
index 88021c2a5..20993b95c 100644
--- a/webapp/utils/post_utils.jsx
+++ b/webapp/utils/post_utils.jsx
@@ -3,11 +3,19 @@
 
 import Client from 'client/web_client.jsx';
 import Constants from 'utils/constants.jsx';
+import * as Utils from 'utils/utils.jsx';
+
+import TeamStore from 'stores/team_store.jsx';
+import UserStore from 'stores/user_store.jsx';
 
 export function isSystemMessage(post) {
     return post.type && (post.type.lastIndexOf(Constants.SYSTEM_MESSAGE_PREFIX) === 0);
 }
 
+export function isPostOwner(post) {
+    return UserStore.getCurrentId() === post.user_id;
+}
+
 export function isComment(post) {
     if ('root_id' in post) {
         return post.root_id !== '' && post.root_id != null;
@@ -33,3 +41,36 @@ export function getProfilePicSrcForPost(post, timestamp) {
 
     return src;
 }
+
+export function canDeletePost(post) {
+    var isOwner = isPostOwner(post);
+    var isAdmin = TeamStore.isTeamAdminForCurrentTeam() || UserStore.isSystemAdminForCurrentUser();
+    var isSystemAdmin = UserStore.isSystemAdminForCurrentUser();
+
+    if (global.window.mm_license.IsLicensed === 'true') {
+        return (global.window.mm_config.RestrictPostDelete === Constants.PERMISSIONS_DELETE_POST_ALL && (isOwner || isAdmin)) ||
+            (global.window.mm_config.RestrictPostDelete === Constants.PERMISSIONS_DELETE_POST_TEAM_ADMIN && isAdmin) ||
+            (global.window.mm_config.RestrictPostDelete === Constants.PERMISSIONS_DELETE_POST_SYSTEM_ADMIN && isSystemAdmin);
+    }
+    return isOwner || isAdmin;
+}
+
+export function canEditPost(post, editDisableAction) {
+    var isOwner = isPostOwner(post);
+
+    var canEdit = isOwner && !isSystemMessage(post);
+
+    if (canEdit && global.window.mm_license.IsLicensed === 'true') {
+        if (global.window.mm_config.AllowEditPost === Constants.ALLOW_EDIT_POST_NEVER) {
+            canEdit = false;
+        } else if (global.window.mm_config.AllowEditPost === Constants.ALLOW_EDIT_POST_TIME_LIMIT) {
+            var timeLeft = (post.create_at + (global.window.mm_config.PostEditTimeLimit * 1000)) - Utils.getTimestamp();
+            if (timeLeft > 0) {
+                editDisableAction.fireAfter(timeLeft + 1000);
+            } else {
+                canEdit = false;
+            }
+        }
+    }
+    return canEdit;
+}
\ No newline at end of file
-- 
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