tardis-dev/src/realtimefeeds/coinflex.ts

Convenient access to tick-level historical and real-time cryptocurrency market data via Node.js

import { Filter } from '../types'
import { RealTimeFeedBase } from './realtimefeed'

export class CoinflexRealTimeFeed extends RealTimeFeedBase {
  protected readonly wssURL = 'wss://v2api.coinflex.com/v2/websocket'

  protected mapToSubscribeMessages(filters: Filter<string>[]): any[] {
    const args = filters
      .map((filter) => {
        if (!filter.symbols || filter.symbols.length === 0) {
          throw new Error('CoinflexRealTimeFeed requires explicitly specified symbols when subscribing to live feed')
        }

        return filter.symbols.map((s) => `${filter.channel}:${s}`)
      })
      .flatMap((s) => s)

    const payload = {
      op: 'subscribe',
      args
    }

    return [payload]
  }

  protected messageIsError(message: any): boolean {
    return message.success === false
  }
}