/*!
 * accounts/get-fees-rest-api.js
 * Copyright © 2019 – Katana Cryptographic Ltd. All Rights Reserved.
 */
'use strict'

const Logger = require('../lib/logger')
const rpcFees = require('../lib/bitcoind-rpc/fees')
const authMgr = require('../lib/auth/authorizations-manager')
const HttpServer = require('../lib/http-server/http-server')

const debugApi = process.argv.indexOf('api-debug') > -1


/**
 * A singleton providing util methods used by the API
 */
class FeesRestApi {

  /**
   * Constructor
   * @param {pushtx.HttpServer} httpServer - HTTP server
   */
  constructor(httpServer) {
    this.httpServer = httpServer
    // Establish routes
    this.httpServer.app.get(
      '/fees',
      authMgr.checkAuthentication.bind(authMgr),
      this.getFees.bind(this),
    )
    this.httpServer.app.post(
        '/fees',
        authMgr.checkAuthentication.bind(authMgr),
        this.getFees.bind(this),
    )
    // Refresh the network fees
    rpcFees.refresh()
  }

  /**
   * Refresh and return the current fees
   * @param {object} req - http request object
   * @param {object} res - http response object
   */
  async getFees(req, res) {
    try {
      const fees = await rpcFees.getFees()
      HttpServer.sendOkDataOnly(res, fees)
    } catch (e) {
      HttpServer.sendError(res, e)
    } finally {
      debugApi && Logger.info(`API : Completed GET /fees`)
    }
  }

}

module.exports = FeesRestApi