Merge pull request #23 from Said-Belhadj/developHEADmaster

Merging develop to master.

1 files changed, 100 insertions, 0 deletions

diff --git a/src/main/java/musichub/business/PlayList.java b/src/main/java/musichub/business/PlayList.java
new file mode 100644
index 0000000..4180a62
--- /dev/null
+++ b/src/main/java/musichub/business/PlayList.java
@@ -0,0 +1,100 @@
+package musichub.business;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+
+import java.util.ArrayList;
+import java.util.UUID;
+
+public class PlayList {
+    private final String title;
+    private final UUID uuid;
+    private ArrayList<UUID> elementUUIDs;
+
+    public PlayList(String title, String id, ArrayList<UUID> elementUUIDs) {
+        this.title = title;
+        this.uuid = UUID.fromString(id);
+        this.elementUUIDs = elementUUIDs;
+    }
+
+    public PlayList(String title) {
+        this.title = title;
+        this.uuid = UUID.randomUUID();
+        this.elementUUIDs = new ArrayList<>();
+    }
+
+    public PlayList(Element xmlElement) {
+        {
+            this.title = xmlElement.getElementsByTagName("title").item(0).getTextContent();
+
+            String uuid = null;
+            try {
+                uuid = xmlElement.getElementsByTagName("UUID").item(0).getTextContent();
+            } catch (Exception ex) {
+                System.out.println("Empty playlist UUID, will create a new one");
+            }
+            if ((uuid == null) || (uuid.isEmpty()))
+                this.uuid = UUID.randomUUID();
+            else this.uuid = UUID.fromString(uuid);
+
+            //parse list of elements:
+            Node elementsElement = xmlElement.getElementsByTagName("elements").item(0);
+            NodeList elementUUIDNodes = elementsElement.getChildNodes();
+            if (elementUUIDNodes == null) return;
+
+            this.elementUUIDs = new ArrayList<>();
+
+
+            for (int i = 0; i < elementUUIDNodes.getLength(); i++) {
+                if (elementUUIDNodes.item(i).getNodeType() == Node.ELEMENT_NODE) {
+                    Element elementElement = (Element) elementUUIDNodes.item(i);
+                    if (elementElement.getNodeName().equals("UUID")) {
+                        try {
+                            this.addElement(UUID.fromString(elementElement.getTextContent()));
+                        } catch (Exception ex) {
+                            ex.printStackTrace();
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    public void addElement(UUID element) {
+        elementUUIDs.add(element);
+    }
+
+    public ArrayList<UUID> getElements() {
+        return elementUUIDs;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void createXMLElement(Document document, Element parentElement) {
+        Element playlistElement = document.createElement("playlist");
+        parentElement.appendChild(playlistElement);
+
+        Element nameElement = document.createElement("title");
+        nameElement.appendChild(document.createTextNode(title));
+        playlistElement.appendChild(nameElement);
+
+        Element UUIDElement = document.createElement("UUID");
+        UUIDElement.appendChild(document.createTextNode(uuid.toString()));
+        playlistElement.appendChild(UUIDElement);
+
+
+        Element elementsElement = document.createElement("elements");
+        for (UUID currentUUID : this.elementUUIDs) {
+
+            Element elementUUIDElement = document.createElement("UUID");
+            elementUUIDElement.appendChild(document.createTextNode(currentUUID.toString()));
+            elementsElement.appendChild(elementUUIDElement);
+        }
+        playlistElement.appendChild(elementsElement);
+    }
+
+}
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