mirror of
https://github.com/ash-project/ash_double_entry.git
synced 2024-09-20 21:43:16 +12:00
31 lines
756 B
Elixir
31 lines
756 B
Elixir
defmodule AshDoubleEntry.Account.Calculations.BalanceAsOf do
|
|
use Ash.Calculation
|
|
require Ash.Expr
|
|
|
|
def expression(opts, context) do
|
|
resource = opts[:resource]
|
|
|
|
ulid = AshDoubleEntry.ULID.generate(context.timestamp)
|
|
|
|
ref = %Ash.Query.Ref{
|
|
attribute:
|
|
Ash.Query.Aggregate.new!(resource, {:balance_as_of_date_agg, context[:ulid]}, :first,
|
|
field: :balance,
|
|
path: [:balances],
|
|
default: Decimal.new(0),
|
|
query: [
|
|
filter: [
|
|
transfer_id: [gt: ulid]
|
|
],
|
|
sort: [
|
|
transfer_id: :desc
|
|
]
|
|
]
|
|
),
|
|
relationship_path: [],
|
|
resource: resource
|
|
}
|
|
|
|
Ash.Expr.expr(^ref || ^Decimal.new(0))
|
|
end
|
|
end
|