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# File 'lib/coinsync/importers/kraken_common.rb', line 82
def build_transaction_list(entries)
set = []
transactions = []
entries.each do |entry|
if entry.type == 'transfer'
transactions << Transaction.new(
exchange: 'Kraken',
time: entry.time,
bought_amount: entry.amount,
bought_currency: entry.asset,
sold_amount: BigDecimal(0),
sold_currency: FiatCurrency.new(nil)
)
next
end
next if entry.type != 'trade'
set << entry
next unless set.length == 2
if set[0].refid != set[1].refid
raise "Kraken importer error: Couldn't match a pair of ledger lines - ids don't match: #{set}"
end
if set.none? { |e| e.crypto? }
raise "Kraken importer error: Couldn't match a pair of ledger lines - " +
"no cryptocurrencies were exchanged: #{set}"
end
bought = set.detect { |e| e.amount > 0 }
sold = set.detect { |e| e.amount < 0 }
if bought.nil? || sold.nil?
raise "Kraken importer error: Couldn't match a pair of ledger lines - invalid transaction amounts: #{set}"
end
transactions << Transaction.new(
exchange: 'Kraken',
time: [bought.time, sold.time].max,
bought_amount: bought.amount - bought.fee,
bought_currency: bought.asset,
sold_amount: -(sold.amount - sold.fee),
sold_currency: sold.asset
)
set.clear
end
transactions
end
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