Entity:

• User
• Chat
• Massage
• Attachment
• UserConnection

User

• ID - UUID
• Name - char[42]
• Surname - char[42]
• Roles - byte[] # Enum Role
• Chats - UUID[]
• ChatTyping - UUID
• LastActivity - DateTime

Role

• Customer = 0
• Vendor = 1
• Support = 2
• Admin = 10

Chat

• ID - UUID
• Title - chars[64]
• Users - UUID[]
• Messages - UUID[]

Message

• ID - UUID
• Content - chars[1024]
• Date - DateTime # Server time
• ReadBy - UUID[] # Users
• RepliedFrom - UUID[] # Messages
• Attachments - UUID[]
• Edited - bool
• Deleted - bool

Attachment

• ID - UUID
• Type - byte # enum AttachmentType
• Name - chars[64]
• Src - string

AttachmentType

• Image = 1

UserConnection

• Сonnection - default connection object
• User - UUID
• Chat - UUID
• MessagesCount - int # Количество сообщений, которое пользователь видит

Events:

Client:

• GetChat()
• GetMessages(int Offset, int Count)
• SendMessage(string Text, UUID[] RepliedFrom, < Name, Src >[] Attachments)
• DeleteMessage(UUID[] Messages)
• EditMessage(UUID Message, string Text, < Name, Src >[] Attachmens, UUID[] RepliedFrom)

Server:

• UpdateChat(Chat Chat)
• UpdateMessages(Message[] Messages)
• UpdateUsers(< bool Online, string Name, string Surname, bool Typing >[])

Controller:

• Connect(UserConnection Connection)
• Disconnect(UserConnection Connection)
• AddMessage(string Text, UUID[] RepliedFrom, Attachment[] Attachments, UUID User, UUID Chat)
• EditMessage(UUID Message, string Text, < Name, Src, Type >[] Attachments, UUID[] RepliedFrom, UUID User, UUID Chat)
• DeleteMessages(UUID[] Messages, UUID User, UUID Chat)
• GetChat(UUID User, UUID Chat)
• GetMessages(int Offset, int Count, UUID User, UUID Chat)
• typing(bool IsTyping, UUID User, UUID Chat)