Email transcript use case

src/main/java/callhub/connect/entities/Message.java

@@ -2,25 +2,23 @@
 import org.springframework.data.annotation.Id;
 import org.springframework.data.mongodb.core.mapping.Document;
 
-import java.text.DateFormat;
-import java.text.SimpleDateFormat;
-import java.time.LocalDate;
-import java.util.Date;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
 
 @Document("message")
 public class Message {
 
     @Id
     private String id;
     private String content;
-    private LocalDate timeStamp;
+    private LocalDateTime timeStamp;
     private String userId;
     private String sessionId;
     private Sender sender;
 
     public Message(){}
 
-    public Message(String content, LocalDate timeStamp, String sessionId, Sender sender) {
+    public Message(String content, LocalDateTime timeStamp, String sessionId, Sender sender) {
         this.content = content;
         this.timeStamp = timeStamp;
         this.sessionId = sessionId;
@@ -29,7 +27,7 @@ public Message(String content, LocalDate timeStamp, String sessionId, Sender sen
 
     public Message(String content, String sessionId, Sender sender) {
         this.content = content;
-        this.timeStamp = LocalDate.now();
+        this.timeStamp = LocalDateTime.now();
         this.sessionId = sessionId;
         this.sender = sender;
     }
@@ -42,12 +40,26 @@ public void setContent(String content) {
         this.content = content;
     }
 
+    /**
+     * Returns the date the message was sent as a formatted string.
+     *
+     * @return A formatted string representing the date of the message in the format "Month dd, yyyy".
+     */
+    public String getDateString() {
+        DateTimeFormatter dateFormatter = DateTimeFormatter.ofPattern("LLLL dd, yyyy");
+        return this.timeStamp.format(dateFormatter);
+    }
+
     private String getTimeStampString() {
-        DateFormat df = new SimpleDateFormat("HH:mm:ss a");
-        return df.format(this.timeStamp);
+        DateTimeFormatter timeFormatter = DateTimeFormatter.ofPattern("HH:mm:ss");
+        return this.timeStamp.format(timeFormatter);
     }
 
+    /**
+     * Returns a string that formats the message with the time it was sent, its sender and its content.
+     * @return a formatted message.
+     */
     public String formattedMessage() {
-        return String.format("%s %s", this.getTimeStampString(), this.content);
+        return String.format("%s %s: %s", this.getTimeStampString(), this.sender.name(), this.content);
     }
 }

src/main/java/callhub/connect/use_case/EmailController.java

@@ -0,0 +1,81 @@
+package callhub.connect.use_case;
+
+import callhub.connect.data_access.SessionRepository;
+import callhub.connect.entities.Message;
+import callhub.connect.entities.Session;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.ArrayList;
+
+@RestController
+@RequestMapping("/email")
+public class EmailController {
+
+    public SessionRepository sessionRepository;
+
+    public EmailController(SessionRepository sessionRepository) {
+        this.sessionRepository = sessionRepository;
+    }
+
+    /**
+     * Retrieves the transcript of messages for a given session code.
+     *
+     * @param code The session code to identify the session.
+     * @return A ResponseEntity containing the transcript of messages as a String.
+     * If the session is not found, an error occurs.
+     */
+    @GetMapping("/transcript/{code}")
+    public ResponseEntity<String> getTranscript(@PathVariable String code) {
+        HttpHeaders headers = new HttpHeaders();
+        boolean sessionExists = sessionRepository.existsById(code);
+        if (!sessionExists) {
+            new ResponseEntity<>("This session is inactive or does not exist.", headers, HttpStatus.NOT_FOUND);
+        }
+
+        try {
+            Session session = sessionRepository.getSessionsByActiveAndCode(true, code);
+            ArrayList<Message> messagesList = session.getMessages();
+
+            StringBuilder transcript = new StringBuilder();
+            for (Message message : messagesList) {
+                transcript.append(message.formattedMessage()).append("\n");
+            }
+            return new ResponseEntity<>(transcript.toString(), headers, HttpStatus.OK);
+        } catch (Exception e) {
+            return new ResponseEntity<>(e.getMessage(), headers, HttpStatus.BAD_REQUEST);
+        }
+    }
+
+    /**
+     * Retrieves the date messages were sent for a given session code, assuming all messages
+     * were sent on the same day as the first message.
+     *
+     * @param code The session code to identify the session.
+     * @return A ResponseEntity containing the date of messages as a String.
+     * If the session is not found, an error occurs.
+     */
+    @GetMapping("/date/{code}")
+    public ResponseEntity<String> getDate(@PathVariable String code) {
+        HttpHeaders headers = new HttpHeaders();
+        boolean sessionExists = sessionRepository.existsById(code);
+        if (!sessionExists) {
+            new ResponseEntity<>("This session is inactive or does not exist.", headers, HttpStatus.NOT_FOUND);
+        }
+
+        try {
+            Session session = sessionRepository.getSessionsByActiveAndCode(true, code);
+            ArrayList<Message> messagesList = session.getMessages();
+
+            Message firstMessage = messagesList.get(0);
+            return new ResponseEntity<>(firstMessage.getDateString(), headers, HttpStatus.OK);
+        } catch (Exception e) {
+            return new ResponseEntity<>(e.getMessage(), headers, HttpStatus.BAD_REQUEST);
+        }
+    }
+}