class ApplyMatch

# File lib/moneymarket/commands/execute_match.rb, line 2
def perform
  cache_balances :before
  execute_exchange
  execute_fees unless same_user?
  cache_balances :after
  event
end

# File lib/moneymarket/commands/execute_match.rb, line 55
def ask
  match.ask
end

# File lib/moneymarket/commands/execute_match.rb, line 78
def ask_base_account
  market.base_account_for match.ask
end

# File lib/moneymarket/commands/execute_match.rb, line 98
def ask_fee
  @ask_fee ||= CalculateFee.new(order: ask, collected_amount: quote).perform
end

# File lib/moneymarket/commands/execute_match.rb, line 86
def ask_quote_account
  market.quote_account_for match.ask
end

# File lib/moneymarket/commands/execute_match.rb, line 51
def bid
  match.bid
end

# File lib/moneymarket/commands/execute_match.rb, line 74
def bid_base_account
  market.base_account_for match.bid
end

# File lib/moneymarket/commands/execute_match.rb, line 94
def bid_fee
  @bid_fee ||= CalculateFee.new(order: bid, collected_amount: volume).perform
end

# File lib/moneymarket/commands/execute_match.rb, line 82
def bid_quote_account
  market.quote_account_for match.bid
end

# File lib/moneymarket/commands/execute_match.rb, line 33
def cache_balances(_which)
  event.public_send("bid_base_account_#{_which}=", bid_base_account.clone)
  event.public_send("bid_quote_account_#{_which}=", bid_quote_account.clone)
  event.public_send("ask_base_account_#{_which}=", ask_base_account.clone)
  event.public_send("ask_quote_account_#{_which}=", ask_quote_account.clone)
  event.public_send("ex_base_account_#{_which}=", exchange_base_account.clone)
  event.public_send("ex_quote_account_#{_which}=", exchange_quote_account.clone)
end

# File lib/moneymarket/commands/execute_match.rb, line 42
def event
  @event ||= Events::TransactionExecuted.new.tap do |ev|
    ev.bid = bid.ref
    ev.ask = ask.ref
    ev.volume = volume
    ev.quote = quote
  end
end

# File lib/moneymarket/commands/execute_match.rb, line 102
def exchange_base_account
  market.exchange_base_account
end

# File lib/moneymarket/commands/execute_match.rb, line 106
def exchange_quote_account
  market.exchange_quote_account
end

# File lib/moneymarket/commands/execute_match.rb, line 12
def execute_exchange
  bid_quote_account.unfreeze quote unless bid.new?
  ask_base_account.unfreeze volume unless ask.new?

  bid.consume volume
  ask.consume volume

  transfer quote, from: bid_quote_account, to: ask_quote_account
  transfer volume, from: ask_base_account, to: bid_base_account

  event.quote = quote
end

# File lib/moneymarket/commands/execute_match.rb, line 25
def execute_fees
  transfer bid_fee, from: bid_base_account, to: exchange_base_account
  transfer ask_fee, from: ask_quote_account, to: exchange_quote_account

  event.bid_fee = bid_fee
  event.ask_fee = ask_fee
end

# File lib/moneymarket/commands/execute_match.rb, line 63
def quote
  @quote ||= begin
    CalculateQuote.new(volume: volume, unit_price: match.price_paid).perform
  end
end

# File lib/moneymarket/commands/execute_match.rb, line 90
def same_user?
  bid.user == ask.user
end

# File lib/moneymarket/commands/execute_match.rb, line 69
def transfer(_amount, from: nil, to: nil)
  from.withdraw _amount
  to.deposit _amount
end

# File lib/moneymarket/commands/execute_match.rb, line 59
def volume
  match.volume
end