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import ContactProvider from './ContactProvider';
import { IJID } from './JID.interface';
import { IContact } from './Contact.interface';
import Contact from './Contact';
import Account from './Account';
import Utils from '@util/Utils';
import HookRepository from '@util/HookRepository';
import Log from '@util/Log';
import Roster from '@ui/Roster';
const EVENT_NEW = 'new';
const EVENT_REMOVED = 'removed';
const KEY_CONTACTS = 'contacts';
export default class ContactManager {
private providers: ContactProvider[] = [];
private contacts: { [key: string]: IContact } = {};
private hookRepository = new HookRepository();
constructor(private account: Account) {
this.registerNewContactHook(contact => {
Roster.get().add(contact);
contact.getChatWindowController();
});
this.registerRemovedContactHook(contact => {
Roster.get().remove(contact);
contact.getChatWindowController().close();
});
}
public restoreCache() {
let session = this.account.getSessionStorage();
let cachedIds: string[] = session.getItem(KEY_CONTACTS) || [];
cachedIds.forEach(id => this.added(id));
cachedIds.forEach(id => this.triggerAddedHook(id));
session.registerHook(KEY_CONTACTS, (newValue, oldValue, key) => {
if (key !== KEY_CONTACTS) {
return;
}
let diff = Utils.diffArray(newValue, oldValue);
let newContactIds = diff.newValues;
let deletedContactIds = diff.deletedValues;
newContactIds.forEach(id => this.added(id));
newContactIds.forEach(id => this.triggerAddedHook(id));
deletedContactIds.forEach(id => this.deleted(id));
});
}
public registerContactProvider(source: ContactProvider) {
this.providers.push(source);
}
public registerNewContactHook(func: (contact: IContact) => void) {
this.hookRepository.registerHook(EVENT_NEW, func);
}
public registerRemovedContactHook(func: (contact: IContact) => void) {
this.hookRepository.registerHook(EVENT_REMOVED, func);
}
public async loadContacts() {
let storage = this.account.getSessionStorage();
if (storage.getItem('contacts', 'loaded')) {
return;
}
let allContacts: IContact[][] = await Promise.all(this.providers.map(provider => provider.load()));
allContacts.forEach(contacts => {
contacts.forEach(contact => {
this.contacts[contact.getId()] = contact;
});
});
let contactIds = Object.keys(this.contacts).sort((a, b) => (a < b ? 1 : -1));
this.account.getSessionStorage().setItem(KEY_CONTACTS, contactIds);
storage.setItem('contacts', 'loaded', true);
}
public async add(contact: IContact): Promise<void> {
this.contacts[contact.getId()] = contact;
let results = await Promise.all(this.providers.map(provider => provider.add(contact)));
if (results.indexOf(true) < 0) {
delete this.contacts[contact.getId()];
throw new Error('Could not add contact, because all contact providers failed.');
}
if (!contact.getProviderId()) {
Log.error('Provider id was not set');
}
}
public addToCache(contact: IContact) {
let id = contact.getId();
let storage = this.account.getSessionStorage();
let cache = storage.getItem(KEY_CONTACTS) || [];
if (!this.contacts[id]) {
this.contacts[id] = contact;
}
if (cache.indexOf(id) < 0) {
let contactIds = Object.keys(this.contacts).sort((a, b) => (a < b ? 1 : -1));
storage.setItem(KEY_CONTACTS, contactIds);
}
}
private added(id: string) {
let contact = this.contacts[id];
if (!contact) {
let providerId = Contact.getProviderId(this.account, id);
let provider = this.getProviderById(providerId);
if (!provider) {
Log.error(`Can not find contact provider with id ${providerId}.`);
return;
}
contact = provider.createContact(id);
}
this.contacts[contact.getId()] = contact;
}
/**
* This function should always be called after a contact was added (this.added).
* It can't be part of the added function, because if multiple contacts are restored,
* it could result into failing dependencies. E.g. in a muc room you need the contact
* object of every member.
*
* @param id contact id
*/
private triggerAddedHook(id: string) {
let contact = this.contacts[id];
if (contact) {
this.hookRepository.trigger(EVENT_NEW, contact);
}
}
private getProviderById(id: string): ContactProvider {
let ids = this.providers.map(provider => provider.getUid());
return this.providers[ids.indexOf(id)];
}
public getContact(jid: IJID): IContact {
return this.contacts[jid.bare];
}
public delete(contact: IContact): Promise<void> {
let provider = this.getProviderById(contact.getProviderId());
return provider.deleteContact(contact.getJid());
}
//@REVIEW id could also be jid
public deleteFromCache(id: string) {
let contactIds = Object.keys(this.contacts);
if (contactIds.indexOf(id) < 0) {
throw new Error(`Can not delete ${id} from cache, because it does not exist.`);
}
this.account.getSessionStorage().setItem(
KEY_CONTACTS,
contactIds.filter(contactId => contactId !== id)
);
}
private deleted(id: string) {
let contact = this.contacts[id];
if (!contact) {
return;
}
delete this.contacts[id];
this.hookRepository.trigger(EVENT_REMOVED, contact);
}
public removeAllContactsFromCache() {
this.account.getSessionStorage().setItem(KEY_CONTACTS, []);
}
}
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