From df5d519b0af9017cb93433698470686ee3c783ee Mon Sep 17 00:00:00 2001
From: Dani Palou <dani@moodle.com>
Date: Mon, 28 May 2018 13:36:07 +0200
Subject: [PATCH] MOBILE-2353 wiki: Allow editing offline pages

---
 .../mod/wiki/components/index/index.html      |  2 +-
 src/addon/mod/wiki/pages/edit/edit.ts         | 29 +++++++++++++++----
 2 files changed, 24 insertions(+), 7 deletions(-)

diff --git a/src/addon/mod/wiki/components/index/index.html b/src/addon/mod/wiki/components/index/index.html
index 335b5ea75..ea3b8ab30 100644
--- a/src/addon/mod/wiki/components/index/index.html
+++ b/src/addon/mod/wiki/components/index/index.html
@@ -15,7 +15,7 @@
         <core-context-menu-item *ngIf="description" [priority]="800" [content]="'core.moduleintro' | translate" (action)="expandDescription()" [iconAction]="'arrow-forward'"></core-context-menu-item>
         <core-context-menu-item *ngIf="loaded && !hasOffline && isOnline && !pageIsOffline" [priority]="700" [content]="'core.refresh' | translate" (action)="doRefresh(null, $event)" [iconAction]="refreshIcon" [closeOnClick]="false"></core-context-menu-item>
         <core-context-menu-item *ngIf="loaded && isOnline && (hasOffline || pageIsOffline)"  [priority]="600" [content]="'core.settings.synchronizenow' | translate" (action)="doRefresh(null, $event, true)" [iconAction]="syncIcon" [closeOnClick]="false"></core-context-menu-item>
-        <core-context-menu-item *ngIf="canEdit && isOnline" [priority]="590" [content]="'core.edit' | translate" iconAction="create" (action)="goToEditPage()"></core-context-menu-item>
+        <core-context-menu-item *ngIf="canEdit && (isOnline || pageIsOffline)" [priority]="590" [content]="'core.edit' | translate" iconAction="create" (action)="goToEditPage()"></core-context-menu-item>
         <core-context-menu-item *ngIf="canEdit" [priority]="580" [content]="'addon.mod_wiki.createpage' | translate" iconAction="add" (action)="goToNewPage()"></core-context-menu-item>
         <core-context-menu-item *ngIf="prefetchStatusIcon" [priority]="500" [content]="prefetchText" (action)="prefetch()" [iconAction]="prefetchStatusIcon" [closeOnClick]="false"></core-context-menu-item>
         <core-context-menu-item *ngIf="size" [priority]="400" [content]="size" [iconDescription]="'cube'" (action)="removeFiles()" [iconAction]="'trash'"></core-context-menu-item>
diff --git a/src/addon/mod/wiki/pages/edit/edit.ts b/src/addon/mod/wiki/pages/edit/edit.ts
index fef89d36b..b64a0fbe5 100644
--- a/src/addon/mod/wiki/pages/edit/edit.ts
+++ b/src/addon/mod/wiki/pages/edit/edit.ts
@@ -25,7 +25,7 @@ import { CoreCourseProvider } from '@core/course/providers/course';
 import { CoreCourseHelperProvider } from '@core/course/providers/helper';
 import { AddonModWikiProvider } from '../../providers/wiki';
 import { AddonModWikiOfflineProvider } from '../../providers/wiki-offline';
-import { AddonModWikiSyncProvider } from '../../providers/wiki-sync';
+import { AddonModWikiSyncProvider, AddonModWikiSyncSubwikiResult } from '../../providers/wiki-sync';
 
 /**
  * Page that allows adding or editing a wiki page.
@@ -182,14 +182,31 @@ export class AddonModWikiEditPage implements OnInit, OnDestroy {
                 }
             });
         } else {
+            const pageTitle = this.pageForm.controls.title.value;
+
             // New page. Wait for sync to be over (if any).
             promise = this.wikiSync.waitForSync(this.blockId);
 
-            if (this.contentControl.value) {
-                // Check if there's already some offline data for this page.
-                promise = promise.then(() => {
-                    return this.wikiOffline.getNewPage(this.pageForm.controls.title.value, this.subwikiId, this.wikiId,
-                            this.userId, this.groupId);
+            if (pageTitle) {
+                // Title is set, it could be editing an offline page or creating a new page using an edit link.
+                promise = promise.then((result: AddonModWikiSyncSubwikiResult) => {
+
+                    // First of all, verify if this page was created in the current sync.
+                    if (result) {
+                        const page = result.created.find((page) => {
+                                return page.title == pageTitle;
+                            });
+
+                        if (page && page.pageId > 0) {
+                            // Page was created, now it exists in the site.
+                            this.pageId = page.pageId;
+
+                            return this.fetchWikiPageData();
+                        }
+                    }
+
+                    // Check if there's already some offline data for this page.
+                    return this.wikiOffline.getNewPage(pageTitle, this.subwikiId, this.wikiId, this.userId, this.groupId);
                 }).then((page) => {
                     // Load offline content.
                     this.contentControl.setValue(page.cachedcontent);