1 files changed, 69 insertions, 0 deletions
diff --git a/webapp/reducers/views/channel.js b/webapp/reducers/views/channel.js
new file mode 100644
index 000000000..0deb2389e
--- /dev/null
+++ b/webapp/reducers/views/channel.js
@@ -0,0 +1,69 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+import {combineReducers} from 'redux';
+import {ActionTypes, Constants} from 'utils/constants.jsx';
+import {ChannelTypes, PostTypes} from 'mattermost-redux/action_types';
+
+function postVisibility(state = {}, action) {
+    switch (action.type) {
+    case ChannelTypes.SELECT_CHANNEL: {
+        const nextState = {...state};
+        nextState[action.data] = Constants.POST_CHUNK_SIZE / 2;
+        return nextState;
+    }
+    case ActionTypes.INCREASE_POST_VISIBILITY: {
+        const nextState = {...state};
+        nextState[action.data] += action.amount;
+        return nextState;
+    }
+    case ActionTypes.RECEIVED_FOCUSED_POST: {
+        const nextState = {...state};
+        nextState[action.channelId] = Constants.POST_CHUNK_SIZE / 2;
+        return nextState;
+    }
+    case PostTypes.RECEIVED_POST: {
+        if (action.data && state[action.data.channel_id]) {
+            const nextState = {...state};
+            nextState[action.data.channel_id] += 1;
+            return nextState;
+        }
+        return state;
+    }
+    default:
+        return state;
+    }
+}
+
+function lastChannelViewTime(state = {}, action) {
+    switch (action.type) {
+    case ChannelTypes.SELECT_CHANNEL: {
+        if (action.member) {
+            const nextState = {...state};
+            nextState[action.data] = action.member.last_viewed_at;
+            return nextState;
+        }
+        return state;
+    }
+    default:
+        return state;
+    }
+}
+
+function loadingPosts(state = {}, action) {
+    switch (action.type) {
+    case ActionTypes.LOADING_POSTS: {
+        const nextState = {...state};
+        nextState[action.channelId] = action.data;
+        return nextState;
+    }
+    default:
+        return state;
+    }
+}
+
+export default combineReducers({
+    postVisibility,
+    lastChannelViewTime,
+    loadingPosts
+});