ChatService

java.lang.Object
- idatt2106.group3.backend.Service.ChatService

@Service
public class ChatService
extends java.lang.Object

Constructor Summary

Constructors
Constructor Description

ChatService()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Chat`	`createChat(Chat chat)`	Stores a given Chat object in the database
`boolean`	`deleteChat(long chatId)`	Deletes Chat object from the database based on chatId
`Chat`	`getChat(long chatId)`	Gets a Chat object if it exists in the database
`java.util.List<Chat>`	`getChats()`	Gets a list of all chats stored in the database
`java.util.List<MessageDTO>`	`getMessages(long chatId)`	Returns all messages written in the given Chat
`Chat`	`updateChat(long chatId, Chat chat)`	Finds a Chat object from database and changes fields that are not null in the input Chat object

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ChatService
```
public ChatService()
```
- Method Detail
  - getChats
```
public java.util.List<Chat> getChats()
```
    Gets a list of all chats stored in the database
    
    Returns:
    
    List of chats
  - getChat
```
public Chat getChat(long chatId)
```
    Gets a Chat object if it exists in the database
    
    Parameters:
    
    chatId -
    
    Returns:
    
    Chat
  - createChat
```
public Chat createChat(Chat chat)
```
    Stores a given Chat object in the database
    
    Parameters:
    
    chat -
    
    Returns:
    
    Chat
  - updateChat
```
public Chat updateChat(long chatId,
                       Chat chat)
```
    Finds a Chat object from database and changes fields that are not null in the input Chat object
    
    Parameters:
    
    chatId -
    
    chat -
    
    Returns:
    
    updated Chat object
  - getMessages
```
public java.util.List<MessageDTO> getMessages(long chatId)
```
    Returns all messages written in the given Chat
    
    Parameters:
    
    chatId -
    
    Returns:
    
    List of all Message objects, empty list in case chat not exists
  - deleteChat
```
public boolean deleteChat(long chatId)
```
    Deletes Chat object from the database based on chatId
    
    Parameters:
    
    chatId -
    
    Returns:
    
    true if was deleted, false if it still exists