mirror of
https://github.com/maybe-finance/maybe.git
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10dd9e061a
* PlaidConnectable concern * Remove bad abstraction * Put sync implementations in own concerns * Sync strategies * Move sync orchestration to Sync class * Clean up sync class, add state machine * Basic market data sync cron * Fix price sync * Improve sync window column names, add timestamps * 30 day syncs by default * Clean up market data methods * Report high duplicate sync counts to Sentry * Add sync states throughout app * account tab session * Persistent account tab selections * Remove manual sleep * Add migration to clear stale syncs on self hosted apps * Tweak sync states * Sync completion event broadcasts * Fix timezones in tests * Cleanup * More cleanup * Plaid item UI broadcasts for sync * Fix account ID namespace conflict * Sync broadcasters * Smoother account sync refreshes * Remove test sync delay
71 lines
2.1 KiB
Ruby
71 lines
2.1 KiB
Ruby
class Balance::ReverseCalculator
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attr_reader :account
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def initialize(account)
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@account = account
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end
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def calculate
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Rails.logger.tagged("Balance::ReverseCalculator") do
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calculate_balances
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end
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end
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private
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def calculate_balances
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current_cash_balance = account.cash_balance
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previous_cash_balance = nil
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@balances = []
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Date.current.downto(account.start_date).map do |date|
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entries = sync_cache.get_entries(date)
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holdings = sync_cache.get_holdings(date)
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holdings_value = holdings.sum(&:amount)
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valuation = sync_cache.get_valuation(date)
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previous_cash_balance = if valuation
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valuation.amount - holdings_value
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else
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calculate_next_balance(current_cash_balance, entries, direction: :reverse)
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end
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if valuation.present?
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@balances << build_balance(date, previous_cash_balance, holdings_value)
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else
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# If date is today, we don't distinguish cash vs. total since provider's are inconsistent with treatment
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# of the cash component. Instead, just set the balance equal to the "total value" reported by the provider
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if date == Date.current
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@balances << build_balance(date, account.cash_balance, account.balance - account.cash_balance)
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else
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@balances << build_balance(date, current_cash_balance, holdings_value)
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end
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end
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current_cash_balance = previous_cash_balance
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end
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@balances
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end
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def sync_cache
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@sync_cache ||= Balance::SyncCache.new(account)
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end
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def build_balance(date, cash_balance, holdings_value)
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Balance.new(
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account_id: account.id,
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date: date,
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balance: holdings_value + cash_balance,
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cash_balance: cash_balance,
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currency: account.currency
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)
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end
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def calculate_next_balance(prior_balance, transactions, direction: :forward)
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flows = transactions.sum(&:amount)
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negated = direction == :forward ? account.asset? : account.liability?
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flows *= -1 if negated
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prior_balance + flows
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end
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end
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