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import { Injectable } from '@angular/core'
import { Observable } from 'rxjs'
// TODO use npm/yarn
import { dbFactory, DatabaseConnection } from 'naive-client'
import { ChatMessage } from './chat-message.model'
const wsUrl = 'ws://localhost:5001'
const httpUrl = 'http://localhost:5000'
@Injectable({
providedIn: 'root'
})
export class MessagingService {
private db: DatabaseConnection
constructor() {
this.db = dbFactory({ wsUrl, httpUrl })
}
init() {
return this.db.init()
}
async makeChatRoom(userId: string): Promise<string> {
const chatRoomId = Date.now().toString()
await this.db.write(`/chatRooms/${chatRoomId}`, {
user: 'admin',
message: `Oh no she better don't`
})
return chatRoomId
}
getChatRoom(chatRoomId: string): Observable<ChatMessage[]> {
return Observable.create(observer => {
this.db.subscribe(`/chatRooms/${chatRoomId}`, data => {
observer.next(Object.values(data))
})
})
}
sendMessage(userId: string, chatRoomId: string, message: string) {
return this.db.write(`/chatRooms/${chatRoomId}`, {
[Date.now().toString()]: {
user: userId,
message
}
})
}
}
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