class FinancialUpdateService
  def initialize(stock)
    @stock = stock
  end

  def run
    set_last_updated_on
    fetch_latest_financial_data
    remove_duplicate_data
    store_latest_financial_data  
  end

  private
  
  def set_last_updated_on
    @last_updated_on = @stock.financials.first.date.to_date
  end

  def fetch_latest_financial_data
    @latest_financial_data = StockDataApi.new(@stock.symbol, {start_date: @last_updated_on, end_date: Date.today-1}).financial_history
  end

  def remove_duplicate_data
    @latest_financial_data.delete_if { |data| data[:date].to_date <= @last_updated_on}
  end

  def store_latest_financial_data
    @latest_financial_data.each do |d| 
      @stock.financials.create(adj_close: d.fetch(:adj_close), close: d.fetch(:close),
      date: d.fetch(:date).to_time, high: d.fetch(:high), low: d.fetch(:low), open: d.fetch(:open),
      volume: d.fetch(:volume))
    end
  end
end