CT/src/Model/model.ts

import * as React from "bloatless-react";

import { Chat, createChatWithName } from "./chatModel";

import UDNFrontend from "udn-frontend";

export const UDN = new UDNFrontend();

// CONNECTION
export const isConnected = new React.State(false);

export const serverAddressInput = React.restoreState("socket-address", "");
export const didRequestConnection = React.restoreState(
  "did-request-connection",
  false
);
export const currentAddress = React.restoreState("current-address", "");
export const previousAddresses =
  React.restoreListState<string>("previous-addresses");

export const cannotDisonnect = React.createProxyState(
  [isConnected],
  () => isConnected.value == false
);

export const cannotConnect = React.createProxyState(
  [serverAddressInput, currentAddress, isConnected],
  () =>
    serverAddressInput.value == "" ||
    (currentAddress.value == serverAddressInput.value &&
      isConnected.value == true)
);

export const cannotResetAddress = React.createProxyState(
  [serverAddressInput, currentAddress],
  () => serverAddressInput.value == currentAddress.value
);

// methods
export function connect(): void {
  if (cannotConnect.value == true) return;

  currentAddress.value = serverAddressInput.value;
  previousAddresses.add(currentAddress.value);

  isConnected.value = false;
  didRequestConnection.value = true;

  UDN.connect(serverAddressInput.value);
}

export function disconnect(): void {
  didRequestConnection.value = false;
  if (cannotDisonnect.value == true) return;
  UDN.disconnect();
}

export function resetAddressInput(): void {
  serverAddressInput.value = currentAddress.value;
}

export function subscribeChannels() {
  chats.value.forEach((chat) => {
    UDN.subscribe(chat.primaryChannel.value);
  });
}

// listeners
UDN.onconnect = () => {
  isConnected.value = true;
  subscribeChannels();
  if (mailboxId.value != "") UDN.connectMailbox(mailboxId.value);
};

UDN.onmessage = (data) => {
  chats.value.forEach((chat) => {
    chat.onmessage(data);
  });
};

UDN.ondisconnect = () => {
  isConnected.value = false;
};

// MAILBOX
export const mailboxId = React.restoreState("mailbox-id", "");
export const isMailboxActive = new React.State(false);

export const cannotDeleteMailbox = React.createProxyState(
  [mailboxId, isMailboxActive],
  () => mailboxId.value == "" || isMailboxActive.value == false
);
export const cannotRequestMailbox = React.createProxyState(
  [isConnected, isMailboxActive],
  () => isConnected.value == false || isMailboxActive.value == true
);

export function requestMailbox(): void {
  if (cannotRequestMailbox.value == true) return;
  UDN.requestMailbox();
}

export function deleteMailbox(): void {
  if (cannotDeleteMailbox.value == true) return;
  UDN.deleteMailbox(mailboxId.value);
}

export function updateMailbox(): void {
  deleteMailbox();
  setTimeout(() => requestMailbox(), 10);
}

UDN.onmailboxcreate = (id) => {
  mailboxId.value = id;
  UDN.connectMailbox(id);
};

UDN.onmailboxconnect = () => {
  isMailboxActive.value = true;
};

UDN.onmailboxdelete = () => {
  isMailboxActive.value = false;
  mailboxId.value = "";
  subscribeChannels();
};

// MISC
export const isEncryptionAvailable = window.crypto.subtle != undefined;
export const senderName = React.restoreState("sender-name", "");

// CHAT
export const chats = new React.ListState<Chat>();
export const chatIds = React.restoreListState<string>("chat-ids");

export const selectedChat = new React.State<Chat | undefined>(undefined);
export const newChatName = new React.State("");

export const cannotCreateChat = React.createProxyState(
  [newChatName],
  () => newChatName.value == ""
);

export function createChat() {
  if (cannotCreateChat.value == true) return;

  createChatWithName(newChatName.value);
  newChatName.value = "";
}

export function closeChatView() {
  selectedChat.value = undefined;
  document.getElementById("settings-tab")?.scrollIntoView();
}

export function selectChat(chat: Chat) {
  selectedChat.value = chat;
  document.getElementById("message-tab")?.scrollIntoView();
}

chatIds.value.forEach((id) => chats.add(new Chat(id)));

// INIT
if (serverAddressInput.value != "" && didRequestConnection.value == true) {
  connect();
}