Add 'write' access for post FSE

+ hasMessageConfAndAreaWrite()
+ MenuModule helpers: gotoMenuOrPrev(), gotoMenuOrShowMessage(). These will likely replace many other pieces of code soon.

core/menu_module.js

@@ -259,6 +259,44 @@ exports.MenuModule = class MenuModule extends PluginModule {
         return this.client.menuStack.goto(name, options, cb);
     }
 
+    gotoMenuOrPrev(name, options, cb) {
+        this.client.menuStack.goto(name, options, err => {
+            if(!err) {
+                if(cb) {
+                    return cb(null);
+                }
+            }
+
+            return this.prevMenu(cb);
+        });
+    }
+
+    gotoMenuOrShowMessage(name, message, options, cb) {
+        if(!cb && _.isFunction(options)) {
+            cb = options;
+            options = {};
+        }
+
+        options = options || { clearScreen: true };
+
+        this.gotoMenu(name, options, err => {
+            if(err) {
+                if(options.clearScreen) {
+                    this.client.term.rawWrite(ansi.resetScreen());
+                }
+
+                this.client.term.write(`${message}\n`);
+                return this.pausePrompt( () => {
+                    return this.prevMenu(cb);
+                });
+            }
+
+            if(cb) {
+                return cb(null);
+            }
+        });
+    }
+
     reload(cb) {
         const prevMenu = this.client.menuStack.pop();
         prevMenu.instance.leave();

core/message_area.js

@@ -32,6 +32,7 @@ exports.getMessageAreaByTag                 = getMessageAreaByTag;
 exports.changeMessageConference             = changeMessageConference;
 exports.changeMessageArea                   = changeMessageArea;
 exports.hasMessageConfAndAreaRead           = hasMessageConfAndAreaRead;
+exports.hasMessageConfAndAreaWrite          = hasMessageConfAndAreaWrite;
 exports.filterMessageAreaTagsByReadACS      = filterMessageAreaTagsByReadACS;
 exports.filterMessageListByReadACS          = filterMessageListByReadACS;
 exports.tempChangeMessageConfAndArea        = tempChangeMessageConfAndArea;
@@ -410,6 +411,14 @@ function hasMessageConfAndAreaRead(client, areaOrTag) {
     return client.acs.hasMessageConfRead(conf) && client.acs.hasMessageAreaRead(areaOrTag);
 }
 
+function hasMessageConfAndAreaWrite(client, areaOrTag) {
+    if(_.isString(areaOrTag)) {
+        areaOrTag = getMessageAreaByTag(areaOrTag) || {};
+    }
+    const conf = getMessageConferenceByTag(areaOrTag.confTag);
+    return client.acs.hasMessageConfWrite(conf) && client.acs.hasMessageAreaWrite(areaOrTag);
+}
+
 function filterMessageAreaTagsByReadACS(client, areaTags) {
     if(!Array.isArray(areaTags)) {
         areaTags = [ areaTags ];

core/msg_area_post_fse.js

@@ -4,6 +4,9 @@
 const FullScreenEditorModule    = require('./fse.js').FullScreenEditorModule;
 const persistMessage            = require('./message_area.js').persistMessage;
 const UserProps                 = require('./user_property.js');
+const {
+    hasMessageConfAndAreaWrite,
+}                               = require('./message_area.js');
 
 const _                         = require('lodash');
 const async                     = require('async');
@@ -59,12 +62,25 @@ exports.getModule = class AreaPostFSEModule extends FullScreenEditorModule {
     }
 
     enter() {
-        if(_.isString(this.client.user.properties[UserProps.MessageAreaTag]) &&
-            !_.isString(this.messageAreaTag))
-        {
-            this.messageAreaTag = this.client.user.properties[UserProps.MessageAreaTag];
-        }
+        this.messageAreaTag =
+            this.messageAreaTag ||
+            this.client.user.getProperty(UserProps.MessageAreaTag);
 
         super.enter();
     }
+
+    initSequence() {
+        if(!hasMessageConfAndAreaWrite(this.client, this.messageAreaTag)) {
+            const noAcsMenu =
+                this.menuConfig.config.messageBasePostMessageNoAccess ||
+                'messageBasePostMessageNoAccess';
+
+            return this.gotoMenuOrShowMessage(
+                noAcsMenu,
+                'You do not have the proper access to post here!',
+            );
+        }
+
+        super.initSequence();
+    }
 };