added post usage column to uploads ACP page

re: #6455

public/language/en-GB/admin/manage/uploads.json

@@ -1,6 +1,7 @@
 {
     "upload-file": "Upload File",
     "filename": "Filename",
+    "usage": "Post Usage",
     "size/filecount": "Size / Filecount",
     "confirm-delete": "Do you really want to delete this file?",
     "filecount": "%1 files"

src/controllers/admin/uploads.js

@@ -8,6 +8,7 @@ var fs = require('fs');
 var jimp = require('jimp');
 
 var meta = require('../../meta');
+var posts = require('../../posts');
 var file = require('../../file');
 var image = require('../../image');
 var plugins = require('../../plugins');
@@ -41,7 +42,7 @@ uploadsController.get = function (req, res, next) {
 
 			filesToData(currentFolder, files, next);
 		},
-		function (files) {
+		function (files, next) {
 			files.sort(function (a, b) {
 				if (a.isDirectory && !b.isDirectory) {
 					return -1;
@@ -50,14 +51,33 @@ uploadsController.get = function (req, res, next) {
 				}
 				return 0;
 			});
-			res.render('admin/manage/uploads', {
-				currentFolder: currentFolder.replace(nconf.get('upload_path'), ''),
-				files: files,
-				breadcrumbs: buildBreadcrumbs(currentFolder),
-				pagination: pagination.create(page, Math.ceil(itemCount / itemsPerPage), req.query),
-			});
+
+			// Add post usage info if in /files
+			if (req.query.dir === '/files') {
+				posts.uploads.getUsage(files, function (err, usage) {
+					files.forEach(function (file, idx) {
+						file.inPids = usage[idx].map(pid => parseInt(pid, 10));
+					});
+
+					next(err, files);
+				});
+			} else {
+				setImmediate(next, null, files);
+			}
 		},
-	], next);
+	], function (err, files) {
+		if (err) {
+			return next(err);
+		}
+
+		res.render('admin/manage/uploads', {
+			currentFolder: currentFolder.replace(nconf.get('upload_path'), ''),
+			showPids: files[0].hasOwnProperty('inPids'),
+			files: files,
+			breadcrumbs: buildBreadcrumbs(currentFolder),
+			pagination: pagination.create(page, Math.ceil(itemCount / itemsPerPage), req.query),
+		});
+	});
 };
 
 function buildBreadcrumbs(currentFolder) {

src/posts/uploads.js

@@ -26,7 +26,7 @@ module.exports = function (Posts) {
 			let match = searchRegex.exec(data.content);
 			const uploads = [];
 			while (match) {
-				uploads.push(match[1]);
+				uploads.push(match[1].replace('-resized', ''));
 				match = searchRegex.exec(data.content);
 			}
 
@@ -56,6 +56,18 @@ module.exports = function (Posts) {
 		});
 	};
 
+	Posts.uploads.getUsage = function (filePaths, callback) {
+		// Given an array of file names, determines which pids they are used in
+		if (!Array.isArray(filePaths)) {
+			filePaths = [filePaths];
+		}
+
+		const keys = filePaths.map(fileObj => 'upload:' + md5(fileObj.name.replace('-resized', '')) + ':pids');
+		async.map(keys, function (key, next) {
+			db.getSortedSetRange(key, 0, -1, next);
+		}, callback);
+	};
+
 	Posts.uploads.associate = function (pid, filePaths, callback) {
 		// Adds an upload to a post's sorted set of uploads
 		const now = Date.now();

src/views/admin/manage/uploads.tpl

@@ -8,6 +8,7 @@
 		<thead>
 			<tr>
 				<th>[[admin/manage/uploads:filename]]</th>
+				<!-- IF showPids --><th class="text-right">[[admin/manage/uploads:usage]]</th><!-- END -->
 				<th class="text-right">[[admin/manage/uploads:size/filecount]]</th>
 				<th></th>
 			</tr>
@@ -16,17 +17,28 @@
 			<!-- BEGIN files -->
 			<tr data-path="{files.path}">
 				<!-- IF files.isDirectory -->
-				<td class="col-md-9" role="button">
+				<td class="col-md-6" role="button">
 					<i class="fa fa-fw fa-folder-o"></i> <a href="{config.relative_path}/admin/manage/uploads?dir={files.path}">{files.name}</a>
 				</td>
 				<!-- ENDIF files.isDirectory -->
 
 				<!-- IF files.isFile -->
-				<td class="col-md-9">
+				<td class="col-md-6">
 					<i class="fa fa-fw fa-file-text-o"></i> <a href="{config.relative_path}{files.url}" target="_blank">{files.name}</a>
 				</td>
 				<!-- ENDIF files.isFile -->
 
+				<!-- IF showPids -->
+				<td class="col-md-3 text-right">
+					<!-- BEGIN ../inPids -->
+					<a target="_blank" href="{config.relative_path}/post/@value"><span class="label label-default">@value</span></a>
+					<!-- END -->
+					<!-- IF !../inPids.length -->
+					<span class="label label-danger">[[admin/manage/uploads:orphaned]]</span>
+					<!-- END -->
+				</td>
+				<!-- END -->
+
 				<td class="col-md-2 text-right"><!-- IF files.isFile -->{files.sizeHumanReadable}<!-- ELSE -->[[admin/manage/uploads:filecount, {files.fileCount}]]<!-- ENDIF files.isFile --></td>
 
 				<td role="button" class="col-md-1 text-right"><i class="delete fa fa-fw fa-trash-o <!-- IF !files.isFile --> hidden<!-- ENDIF !files.isFile -->"></i></td>