Class: CoinSync::Importers::KucoinAPI

Inherits:
Base
  • Object
show all
Defined in:
lib/coinsync/importers/kucoin_api.rb

Defined Under Namespace

Classes: HistoryEntry

Constant Summary collapse

BASE_URL = 
"https://api.kucoin.com"

Instance Method Summary collapse

Methods inherited from Base

#can_build?, register_commands, register_importer, registered_commands

Constructor Details

#initialize(config, params = {}) ⇒ KucoinAPI

Returns a new instance of KucoinAPI.



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# File 'lib/coinsync/importers/kucoin_api.rb', line 35

def initialize(config, params = {})
  super
  @api_key = params['api_key']
  @api_secret = params['api_secret']
end

Instance Method Details

#can_import?(type) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/coinsync/importers/kucoin_api.rb', line 41

def can_import?(type)
  @api_key && @api_secret && [:balances, :transactions].include?(type)
end

#import_balances ⇒ Object 



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# File 'lib/coinsync/importers/kucoin_api.rb', line 72

def import_balances
  page = 1
  full_list = []

  loop do
    response = make_request('/account/balances', limit: 20, page: page)

    case response
    when Net::HTTPSuccess
      json = JSON.parse(response.body)

      if json['success'] != true || json['code'] != 'OK'
        raise "Kucoin importer: Invalid response: #{response.body}"
      end

      data = json['data']
      list = data && data['datas']

      if !list
        raise "Kucoin importer: No data returned: #{response.body}"
      end

      full_list.concat(list)

      page += 1
      break if page > data['pageNos']
    when Net::HTTPBadRequest
      raise "Kucoin importer: Bad request: #{response}"
    else
      raise "Kucoin importer: Bad response: #{response}"
    end
  end

  full_list.delete_if { |b| b['balance'] == 0.0 && b['freezeBalance'] == 0.0 }

  full_list.map do |b|
    Balance.new(
      CryptoCurrency.new(b['coinType']),
      available: BigDecimal.new(b['balanceStr']),
      locked: BigDecimal.new(b['freezeBalanceStr'])
    )
  end
end

#import_transactions(filename) ⇒ Object 



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# File 'lib/coinsync/importers/kucoin_api.rb', line 45

def import_transactions(filename)
  # TODO: what if there's more than 100? (looks like we might need to switch to loading each market separately…)
  response = make_request('/order/dealt', limit: 100)

  case response
  when Net::HTTPSuccess
    json = JSON.parse(response.body)

    if json['success'] != true || json['code'] != 'OK'
      raise "Kucoin importer: Invalid response: #{response.body}"
    end

    data = json['data']
    list = data && data['datas']

    if !list
      raise "Kucoin importer: No data returned: #{response.body}"
    end

    File.write(filename, JSON.pretty_generate(list) + "\n")
  when Net::HTTPBadRequest
    raise "Kucoin importer: Bad request: #{response}"
  else
    raise "Kucoin importer: Bad response: #{response}"
  end
end

#read_transaction_list(source) ⇒ Object 



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# File 'lib/coinsync/importers/kucoin_api.rb', line 116

def read_transaction_list(source)
  json = JSON.parse(source.read)
  transactions = []

  json.each do |hash|
    entry = HistoryEntry.new(hash)

    if entry.direction == 'BUY'
      transactions << Transaction.new(
        exchange: 'Kucoin',
        time: entry.created_at,
        bought_amount: entry.amount - entry.fee,
        bought_currency: entry.coin_type,
        sold_amount: entry.deal_value,
        sold_currency: entry.coin_type_pair
      )
    elsif entry.direction == 'SELL'
      transactions << Transaction.new(
        exchange: 'Kucoin',
        time: entry.created_at,
        sold_amount: entry.amount,
        sold_currency: entry.coin_type,
        bought_amount: entry.deal_value - entry.fee,
        bought_currency: entry.coin_type_pair
      )
    else
      raise "Kucoin importer error: unexpected entry direction '#{entry.direction}'"
    end
  end

  transactions.reverse
end