'implemented search by word, time and newest'

Author: 343719654

src/main/java/tutorial/Chat.java

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+package tutorial;
+import java.util.ArrayList;
+
+/**
+ * Copied from Branch Chat Initiation
+ **/
+public class Chat {
+    protected String name;
+    protected String chatID;
+    protected String senderUsername;
+
+    // chat's conversation history
+    protected ArrayList<Message> convHist;
+
+
+    /**
+     * Get the chat's name
+     * @return name
+     */
+    public String getName(){
+        return this.name;
+    }
+
+    /**
+     * Get the chat's ID
+     * @return chatID
+     */
+    public String getChatID(){
+        return this.chatID;
+    }
+
+    /**
+     * Get the sender's username
+     * @return senderUsername
+     */
+    public String getSenderUsername(){
+        return this.senderUsername;
+    }
+
+    /**
+     * Return this conversation history of the chat
+     * @return convHist
+     */
+    public ArrayList<Message> getConvHist(){
+        return new ArrayList<Message>(this.convHist);
+    }
+
+    /**
+     * Add a message to the chat's conversation history when a message is sent or received
+     * @param message Message that is sent or received
+     */
+    public void addtoconvHist(Message message){
+        this.convHist.add(message);
+    }
+}

src/main/java/tutorial/Message.java

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+package tutorial;
+import java.time.LocalDateTime;
+/**
+ * Copied from Branch Conversation History
+ * **/
+public abstract class Message {
+        /**
+         * ID of message sender (UUID)
+         */
+        private final String senderID;
+        /**
+         * Time message was sent
+         */
+        private final LocalDateTime timestamp;
+        /**
+         * ID of message (UUID)
+         */
+        private final String msgID;
+
+
+        /**
+         * Construct a new message
+         * @param senderID ID of sender
+         * @param timestamp time message was sent
+         * @param msgID ID of message
+         */
+        public Message(String senderID, LocalDateTime timestamp, String msgID) {
+            this.senderID = senderID;
+            this.timestamp = timestamp;
+            this.msgID = msgID;
+        }
+
+        /**
+         * Gets ID of sender
+         * @return ID of sender
+         */
+        public String getSenderID() {
+            return senderID;
+        }
+
+        /**
+         * Gets message timestamp
+         * @return message timestamp
+         */
+        public LocalDateTime getTimestamp() {
+            return timestamp;
+        }
+
+        /**
+         * Gets ID of message
+         * @return ID of message
+         */
+        public String getMsgID() {
+            return msgID;
+        }
+
+        //Implemented this method from James' code -Emma
+        public abstract String getMsgContent();
+
+
+    }

src/main/java/tutorial/SearchInputBoundary.java

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+package tutorial;
+
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+
+
+/**
+ * The input boundary for the login use case.
+ */
+// Note: The interface that the SearchUseCase implements
+// It specifies what the input (arguments) and output (return type) are.
+
+public interface SearchInputBoundary {
+    ArrayList<Message> SearchBykeyword(Chat c, String word);
+
+    ArrayList<Message> SearchBytime(Chat c, LocalDateTime time);
+
+    Message  SearchByNewest(ArrayList<Message> ar);
+}

src/main/java/tutorial/SearchUseCase.java

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+package tutorial;
+
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+
+
+public class SearchUseCase implements SearchInputBoundary {
+    private final Chat c;
+    private int size;
+
+    private Message temp;
+
+    protected ArrayList<Message> Found;
+
+    /**
+     * / The "output" of this use case.
+     */
+    // Note: This could also be a fully-fledged class if we need to return
+    // information to the controller.
+
+
+    public SearchUseCase(Chat c) {
+        this.c = c;
+        this.size= c.convHist.size();
+    }
+
+
+    public ArrayList<Message>  SearchBykeyword(Chat c, String word) {
+        for(int i=0; i<size; i++){
+            temp = c.convHist.get(i);
+            if(temp.getMsgContent().indexOf(word) != -1){
+                Found.add(temp);
+            }
+        }
+        return Found;
+    }
+
+    public ArrayList<Message> SearchBytime(Chat c, LocalDateTime time){
+        for(int i=0; i<size; i++){
+            temp = c.convHist.get(i);
+            if(temp.getTimestamp() == time){
+                Found.add(temp);
+            }
+        }
+        return Found;
+    }
+
+    public Message SearchByNewest(ArrayList<Message> ar){
+        if(ar.isEmpty()){
+            return null;
+        }
+
+        int ar_size = ar.size();
+        Message greater = ar.get(0);
+        for(int i=1; i<ar_size; i++){
+            if((greater.getTimestamp()).compareTo(ar.get(i).getTimestamp()) < 0){
+                greater = ar.get(i);
+            }
+        }
+        return greater;
+    }
+
+
+}

src/main/java/tutorial/TextMessage.java

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+package tutorial;
+import java.time.LocalDateTime;
+
+/**
+ * A message with text as its content (child of Message)
+ */
+public class TextMessage extends Message {
+    /**
+     * Text content of message
+     */
+    private String msgContent;
+
+    /**
+     * Construct a text message
+     * @param senderID ID of sender
+     * @param msgContent text content
+     * @param timestamp message timestamp
+     * @param msgID ID of message
+     */
+    public TextMessage(String senderID, String msgContent, LocalDateTime timestamp, String msgID) {
+        super(senderID, timestamp, msgID);
+        this.msgContent = msgContent;
+    }
+
+    /**
+     * Gets text content of a message
+     * @return message content
+     */
+    public String getMsgContent() {
+        return msgContent;
+    }
+
+    /**
+     * Sets text content of a message
+     * @param msgContent updated message content
+     */
+    public void setMsgContent(String msgContent) {
+        this.msgContent = msgContent;
+    }
+}