logs-content: Added move up/down mutations

rpdata/api/Post.js

@@ -23,4 +23,25 @@ class Post {
   }
 }
 
-module.exports = {Post}
+class PostAPI {
+  /**
+   * Call `movePost(input)` mutation, returns the id and position of all affected posts.
+   * 
+   * @param {{id:string, toPosition: number}} input 
+   * @returns {Promise<{id:string, position:number}[]>}
+   */
+  move(input) {
+    return query(`
+      mutation MovePost($input: PostMoveInput!) {
+        movePost(input: $input) {
+          id
+          position
+        }
+      }
+    `, {input}, {permissions: ["post.move"]}).then(({movePost}) => {
+       return movePost
+    })
+  }
+}
+
+module.exports = {Post, postApi: new PostAPI}