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c1d98fe73b
* Add kind field to valuation * Fix schema conflict * Add kind to valuation * Scaffold opening balance manager * Opening balance manager implementation * Update account import to use opening balance manager + tests * Update account to use opening balance manager * Fix test assertions, usage of current balance manager * Lint fixes * Add Opening Balance manager, add tests to forward calculator * Add credit card to "all cash" designation * Simplify valuation model * Add current balance manager with tests * Add current balance logic to reverse calculator and plaid sync * Tweaks to initial calc logic * Ledger testing helper, tweak assertions for reverse calculator * Update test assertions * Extract balance transformer, simplify calculators * Algo simplifications * Final tweaks to calculators * Cleanup * Fix error, propagate sync errors up to parent * Update migration script, valuation naming
86 lines
2.5 KiB
Ruby
86 lines
2.5 KiB
Ruby
class Account::CurrentBalanceManager
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InvalidOperation = Class.new(StandardError)
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Result = Struct.new(:success?, :changes_made?, :error, keyword_init: true)
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def initialize(account)
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@account = account
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end
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def has_current_anchor?
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current_anchor_valuation.present?
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end
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# Our system should always make sure there is a current anchor, and that it is up to date.
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# The fallback is provided for backwards compatibility, but should not be relied on since account.balance is a "cached/derived" value.
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def current_balance
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if current_anchor_valuation
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current_anchor_valuation.entry.amount
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else
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Rails.logger.warn "No current balance anchor found for account #{account.id}. Using cached balance instead, which may be out of date."
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account.balance
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end
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end
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def current_date
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if current_anchor_valuation
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current_anchor_valuation.entry.date
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else
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Date.current
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end
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end
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def set_current_balance(balance)
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# A current balance anchor implies there is an external data source that will keep it updated. Since manual accounts
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# are tracked by the user, a current balance anchor is not appropriate.
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raise InvalidOperation, "Manual accounts cannot set current balance anchor. Set opening balance or use a reconciliation instead." if account.manual?
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if current_anchor_valuation
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changes_made = update_current_anchor(balance)
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Result.new(success?: true, changes_made?: changes_made, error: nil)
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else
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create_current_anchor(balance)
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Result.new(success?: true, changes_made?: true, error: nil)
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end
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end
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private
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attr_reader :account
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def current_anchor_valuation
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@current_anchor_valuation ||= account.valuations.current_anchor.includes(:entry).first
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end
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def create_current_anchor(balance)
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account.entries.create!(
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date: Date.current,
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name: Valuation.build_current_anchor_name(account.accountable_type),
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amount: balance,
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currency: account.currency,
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entryable: Valuation.new(kind: "current_anchor")
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)
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end
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def update_current_anchor(balance)
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changes_made = false
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ActiveRecord::Base.transaction do
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# Update associated entry attributes
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entry = current_anchor_valuation.entry
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if entry.amount != balance
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entry.amount = balance
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changes_made = true
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end
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if entry.date != Date.current
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entry.date = Date.current
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changes_made = true
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end
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entry.save! if entry.changed?
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end
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changes_made
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end
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end
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