From c4135389a4f26b18f680d950cde17512dc44a743 Mon Sep 17 00:00:00 2001
From: Zlatin Balevsky <zlatinb@gmail.com>
Date: Fri, 6 Dec 2019 13:16:32 +0000
Subject: [PATCH] wip on shared files display page

---
 webui/src/main/css/muwire.css                 | 88 ++++++++++++++-----
 .../com/muwire/webui/DownloadServlet.java     |  2 +-
 .../java/com/muwire/webui/FileManager.java    | 40 +++++++++
 .../java/com/muwire/webui/FilesServlet.java   | 75 ++++++++++++++++
 .../java/com/muwire/webui/SearchServlet.java  | 16 ++--
 webui/src/main/js/files.js                    |  9 ++
 webui/src/main/webapp/Files.jsp               | 28 ++++++
 7 files changed, 226 insertions(+), 32 deletions(-)
 create mode 100644 webui/src/main/java/com/muwire/webui/FileManager.java
 create mode 100644 webui/src/main/java/com/muwire/webui/FilesServlet.java
 create mode 100644 webui/src/main/js/files.js
 create mode 100644 webui/src/main/webapp/Files.jsp

diff --git a/webui/src/main/css/muwire.css b/webui/src/main/css/muwire.css
index c1f2f952..d470f900 100644
--- a/webui/src/main/css/muwire.css
+++ b/webui/src/main/css/muwire.css
@@ -1,24 +1,66 @@
-                #table-wrapper {
-                  position:relative;
-                }
-                #table-scroll {
-                  height:150px;
-                  overflow:auto;
-                  margin-top:20px;
-                }
-                #table-wrapper table {
-                  width:100%;
+#table-wrapper {
+  position:relative;
+}
+#table-scroll {
+  height:150px;
+  overflow:auto;
+  margin-top:20px;
+}
+#table-wrapper table {
+  width:100%;
 
-                }
-                #table-wrapper table * {
-                  background:yellow;
-                  color:black;
-                }
-                #table-wrapper table thead th .text {
-                  position:absolute;
-                  top:-20px;
-                  z-index:2;
-                  height:20px;
-                  width:35%;
-                  border:1px solid red;
-                }
+}
+#table-wrapper table * {
+  background:yellow;
+  color:black;
+}
+#table-wrapper table thead th .text {
+  position:absolute;
+  top:-20px;
+  z-index:2;
+  height:20px;
+  width:35%;
+  border:1px solid red;
+}
+
+/* File tree CSS */
+
+ /* Remove default bullets */
+ul, #sharedTree {
+  list-style-type: none;
+}
+
+/* Remove margins and padding from the parent ul */
+#sharedTree {
+  margin: 0;
+  padding: 0;
+}
+
+/* Style the caret/arrow */
+.caret {
+  cursor: pointer;
+  user-select: none; /* Prevent text selection */
+}
+
+/* Create the caret/arrow with a unicode, and style it */
+.caret::before {
+  content: "\25B6";
+  color: black;
+  display: inline-block;
+  margin-right: 6px;
+}
+
+/* Rotate the caret/arrow icon when clicked on (using JavaScript) */
+.caret-down::before {
+  transform: rotate(90deg);
+}
+
+/* Hide the nested list */
+.nested {
+  display: none;
+}
+
+/* Show the nested list when the user clicks on the caret/arrow (with JavaScript) */
+.active {
+  display: block;
+} 
diff --git a/webui/src/main/java/com/muwire/webui/DownloadServlet.java b/webui/src/main/java/com/muwire/webui/DownloadServlet.java
index 11a174d8..b1e8518f 100644
--- a/webui/src/main/java/com/muwire/webui/DownloadServlet.java
+++ b/webui/src/main/java/com/muwire/webui/DownloadServlet.java
@@ -48,7 +48,7 @@ public class DownloadServlet extends HttpServlet {
         downloadManager.getDownloaders().forEach(d -> {
             sb.append("<Download>");
             sb.append("<InfoHash>").append(Base64.encode(d.getInfoHash().getRoot())).append("</InfoHash>");
-            sb.append("<Name>").append(DataHelper.escapeHTML(d.getFile().getName())).append("</Name>");
+            sb.append("<Name>").append(Util.escapeHTMLinXML(d.getFile().getName())).append("</Name>");
             sb.append("<State>").append(d.getCurrentState().toString()).append("</State>");
             int speed = d.speed();
             sb.append("<Speed>").append(DataHelper.formatSize2Decimal(speed)).append("B/sec").append("</Speed>");
diff --git a/webui/src/main/java/com/muwire/webui/FileManager.java b/webui/src/main/java/com/muwire/webui/FileManager.java
new file mode 100644
index 00000000..30ec10f4
--- /dev/null
+++ b/webui/src/main/java/com/muwire/webui/FileManager.java
@@ -0,0 +1,40 @@
+package com.muwire.webui;
+
+import java.io.File;
+import java.util.HashSet;
+import java.util.Set;
+
+import com.muwire.core.Core;
+import com.muwire.core.SharedFile;
+import com.muwire.core.files.FileDownloadedEvent;
+import com.muwire.core.files.FileHashedEvent;
+import com.muwire.core.files.FileListCallback;
+import com.muwire.core.files.FileLoadedEvent;
+import com.muwire.core.files.FileTree;
+
+public class FileManager {
+
+    private final Core core;
+    private final FileTree<SharedFile> fileTree = new FileTree<>();
+    
+    public FileManager(Core core) {
+        this.core = core;
+    }
+    
+    public void onFileLoadedEvent(FileLoadedEvent e) {
+        fileTree.add(e.getLoadedFile().getFile(), e.getLoadedFile());
+    }
+    
+    public void onFileHashedEvent(FileHashedEvent e) {
+        fileTree.add(e.getSharedFile().getFile(), e.getSharedFile());
+    }
+    
+    public void onFileDownloadedEvent(FileDownloadedEvent e) {
+        if (core.getMuOptions().getShareDownloadedFiles())
+            fileTree.add(e.getDownloadedFile().getFile(), e.getDownloadedFile());
+    }
+    
+    void list(File parent, FileListCallback<SharedFile> callback) {
+        fileTree.list(parent, callback);
+    }
+}
diff --git a/webui/src/main/java/com/muwire/webui/FilesServlet.java b/webui/src/main/java/com/muwire/webui/FilesServlet.java
new file mode 100644
index 00000000..2be735d8
--- /dev/null
+++ b/webui/src/main/java/com/muwire/webui/FilesServlet.java
@@ -0,0 +1,75 @@
+package com.muwire.webui;
+
+import java.io.File;
+import java.io.IOException;
+
+import javax.servlet.ServletConfig;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import com.muwire.core.SharedFile;
+import com.muwire.core.files.FileListCallback;
+
+import net.i2p.data.Base64;
+import net.i2p.data.DataHelper;
+
+public class FilesServlet extends HttpServlet {
+    
+    private FileManager fileManager;
+
+    @Override
+    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        StringBuilder sb = new StringBuilder();
+        sb.append("<?xml version='1.0' encoding='UTF-8'?>");
+        sb.append("<Files>");
+        ListCallback cb = new ListCallback(sb);
+        String encodedPath = req.getParameter("path");
+        File current = null;
+        if (encodedPath != null) {
+            String[] split = encodedPath.split(",");
+            for (String element : split) {
+                element = Base64.decodeToString(element);
+                if (current == null) {
+                    current = new File(element);
+                    continue;
+                }
+                current = new File(current, element);
+            }
+        }
+        fileManager.list(current, cb);
+        sb.append("</Files>");
+        resp.setContentType("text/xml");
+        resp.setCharacterEncoding("UTF-8");
+        resp.setDateHeader("Expires", 0);
+        resp.setHeader("Pragma", "no-cache");
+        resp.setHeader("Cache-Control", "no-store, max-age=0, no-cache, must-revalidate");
+        resp.getWriter().write(sb.toString());
+        resp.flushBuffer();
+    }
+
+    @Override
+    public void init(ServletConfig cfg) throws ServletException {
+        fileManager = (FileManager) cfg.getServletContext().getAttribute("fileManager");
+    }
+
+    private static class ListCallback implements FileListCallback<SharedFile> {
+        private final StringBuilder sb;
+        ListCallback(StringBuilder sb) {
+            this.sb = sb;
+        }
+        @Override
+        public void onFile(File f, SharedFile value) {
+            sb.append("<File>");
+            sb.append("<Name>").append(Util.escapeHTMLinXML(f.getName())).append("</Name>");
+            sb.append("<Size>").append(DataHelper.formatSize2Decimal(value.getCachedLength())).append("B").append("</Size>");
+            // TODO: other stuff
+            sb.append("</File>");
+        }
+        @Override
+        public void onDirectory(File f) {
+            sb.append("<Directory>").append(Util.escapeHTMLinXML(f.getName())).append("</Directory>");
+        }
+    }
+}
diff --git a/webui/src/main/java/com/muwire/webui/SearchServlet.java b/webui/src/main/java/com/muwire/webui/SearchServlet.java
index 451acf98..e9ef9264 100644
--- a/webui/src/main/java/com/muwire/webui/SearchServlet.java
+++ b/webui/src/main/java/com/muwire/webui/SearchServlet.java
@@ -54,18 +54,18 @@ public class SearchServlet extends HttpServlet {
             for (SearchResults results : searchManager.getResults().values()) {
                 sb.append("<Search>");
                 sb.append("<uuid>").append(results.getUUID()).append("</uuid>");
-                sb.append("<Query>").append(DataHelper.escapeHTML(results.getSearch())).append("</Query>");
+                sb.append("<Query>").append(Util.escapeHTMLinXML(results.getSearch())).append("</Query>");
                 Map<Persona, Set<UIResultEvent>> bySender = results.getBySender();
                 sb.append("<ResultsBySender>");
                 bySender.forEach((sender, resultsFromSender) -> {
                     sb.append("<ResultsFromSender>");
                     sb.append("<Sender>");
-                    sb.append(DataHelper.escapeHTML(sender.getHumanReadableName()));
+                    sb.append(Util.escapeHTMLinXML(sender.getHumanReadableName()));
                     sb.append("</Sender>");
                     resultsFromSender.forEach(result -> {
                         sb.append("<Result>");
                         sb.append("<Name>");
-                        sb.append(DataHelper.escapeHTML(result.getName()));
+                        sb.append(Util.escapeHTMLinXML(result.getName()));
                         sb.append("</Name>");
                         sb.append("<Size>");
                         sb.append(DataHelper.formatSize2Decimal(result.getSize(), false)).append("B");
@@ -76,7 +76,7 @@ public class SearchServlet extends HttpServlet {
                         sb.append("</InfoHash>");
                         sb.append("<Downloading>").append(downloadManager.isDownloading(result.getInfohash())).append("</Downloading>");
                         if (result.getComment() != null)
-                            sb.append("<Comment>").append(DataHelper.escapeHTML(result.getComment())).append("</Comment>");
+                            sb.append("<Comment>").append(Util.escapeHTMLinXML(result.getComment())).append("</Comment>");
                         sb.append("</Result>");
                     });
                     sb.append("</ResultsFromSender>");
@@ -94,7 +94,7 @@ public class SearchServlet extends HttpServlet {
             for (SearchResults results : searchManager.getResults().values()) {     
                 sb.append("<Search>");
                 sb.append("<uuid>").append(results.getUUID()).append("</uuid>");
-                sb.append("<Query>").append(DataHelper.escapeHTML(results.getSearch())).append("</Query>");
+                sb.append("<Query>").append(Util.escapeHTMLinXML(results.getSearch())).append("</Query>");
                 Map<InfoHash, Set<UIResultEvent>> byInfohash = results.getByInfoHash();
                 sb.append("<ResultsByFile>");
                 byInfohash.forEach((infoHash, resultSet) -> {
@@ -102,13 +102,13 @@ public class SearchServlet extends HttpServlet {
                     UIResultEvent first = resultSet.iterator().next();
                     sb.append("<InfoHash>").append(Base64.encode(infoHash.getRoot())).append("</InfoHash>");
                     sb.append("<Downloading>").append(downloadManager.isDownloading(infoHash)).append("</Downloading>");
-                    sb.append("<Name>").append(DataHelper.escapeHTML(first.getName())).append("</Name>");
+                    sb.append("<Name>").append(Util.escapeHTMLinXML(first.getName())).append("</Name>");
                     sb.append("<Size>").append(DataHelper.formatSize2Decimal(first.getSize(), false)).append("B").append("</Size>");
                     resultSet.forEach(result -> {
                         sb.append("<Result>");
-                        sb.append("<Sender>").append(DataHelper.escapeHTML(result.getSender().getHumanReadableName())).append("</Sender>");
+                        sb.append("<Sender>").append(Util.escapeHTMLinXML(result.getSender().getHumanReadableName())).append("</Sender>");
                         if (result.getComment() != null)
-                            sb.append("<Comment>").append(DataHelper.escapeHTML(result.getComment())).append("</Comment>");
+                            sb.append("<Comment>").append(Util.escapeHTMLinXML(result.getComment())).append("</Comment>");
                         sb.append("</Result>");
                     });
                     sb.append("</ResultsForFile>");
diff --git a/webui/src/main/js/files.js b/webui/src/main/js/files.js
new file mode 100644
index 00000000..bbf9f201
--- /dev/null
+++ b/webui/src/main/js/files.js
@@ -0,0 +1,9 @@
+var toggler = document.getElementsByClassName("caret");
+var i;
+
+for (i = 0; i < toggler.length; i++) {
+  toggler[i].addEventListener("click", function() {
+    this.parentElement.querySelector(".nested").classList.toggle("active");
+    this.classList.toggle("caret-down");
+  });
+} 
diff --git a/webui/src/main/webapp/Files.jsp b/webui/src/main/webapp/Files.jsp
new file mode 100644
index 00000000..330515f8
--- /dev/null
+++ b/webui/src/main/webapp/Files.jsp
@@ -0,0 +1,28 @@
+<%@ page language="java" contentType="text/html; charset=UTF-8"
+    pageEncoding="UTF-8"%>
+<%@include file="initcode.jsi"%>
+
+<% String pagetitle="Files"; %>
+
+<html>
+	<head>
+<%@ include file="css.jsi"%>
+	<script src="js/files.js"?<%=version%>" type="text/javascript"></script>
+	</head>
+	<body onload="initConnectionsCount(); initFiles();">
+<%@ include file="header.jsi"%>
+		<p>Shared Files</p>
+			<div id="sharedTree"></div>
+		<hr/>
+		<form action="/MuWire/Files" method="post">
+			<input type="text" name="file">
+			<input type="hidden" name="action" value="share">
+			<input type="submit" value="Share">
+		</form>
+		<form action="/MuWire/Files" method="post">
+			<input type="text" name="file">
+			<input type="hidden" name="action" value="unshare">
+			<input type="submit" value="Unshare">
+		</form>
+	</body>
+</html>
\ No newline at end of file