Use ETag for file save status

Signed-off-by: Julius Härtl <jus@bitgrid.net>

appinfo/database.xml

@@ -37,6 +37,16 @@
 				<unsigned>true</unsigned>
 				<length>4</length>
 			</field>
+			<field>
+				<name>last_saved_version_etag</name>
+				<type>text</type>
+				<length>64</length>
+			</field>
+			<field>
+				<name>base_version_etag</name>
+				<type>text</type>
+				<length>64</length>
+			</field>
 		</declaration>
 	</table>
 

appinfo/info.xml

@@ -5,7 +5,7 @@
 	<name>Text</name>
 	<summary>Type together</summary>
 	<description>Collaborative text editor</description>
-	<version>0.1.0-dev13</version>
+	<version>0.1.0-dev14</version>
 	<licence>agpl</licence>
 	<author mail="jus@bitgrid.net">Julius Härtl</author>
 	<namespace>Text</namespace>

appinfo/routes.php

@@ -12,7 +12,7 @@ return [
 		// Load initial document
 		['name' => 'Session#fetch', 'url' => '/session/fetch', 'verb' => 'GET'],
 		// Load steps
-		['name' => 'Session#sync', 'url' => '/session/sync', 'verb' => 'GET'],
+		['name' => 'Session#sync', 'url' => '/session/sync', 'verb' => 'POST'],
 		// Push own steps
 		['name' => 'Session#push', 'url' => '/session/push', 'verb' => 'POST'],
 		// Close session