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8274da81fc
and testGroup. Replacing these removes a layer of indirection, and reduces the need to depend on Hledger.Utils.Test.
260 lines
12 KiB
Haskell
260 lines
12 KiB
Haskell
{-# LANGUAGE FlexibleInstances #-}
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{-# LANGUAGE OverloadedStrings #-}
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{-|
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An account-centric transactions report.
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-}
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module Hledger.Reports.AccountTransactionsReport (
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AccountTransactionsReport,
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AccountTransactionsReportItem,
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accountTransactionsReport,
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accountTransactionsReportItems,
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transactionRegisterDate,
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triOrigTransaction,
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triDate,
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triAmount,
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triBalance,
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triCommodityAmount,
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triCommodityBalance,
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accountTransactionsReportByCommodity,
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tests_AccountTransactionsReport
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)
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where
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import Data.List (mapAccumR, nub, partition, sortBy)
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import Data.List.Extra (nubSort)
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import Data.Maybe (catMaybes)
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import Data.Ord (Down(..), comparing)
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import Data.Text (Text)
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import qualified Data.Text as T
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import Data.Time.Calendar (Day)
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import Hledger.Data
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import Hledger.Query
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import Hledger.Reports.ReportOptions
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import Hledger.Utils
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-- | An account transactions report represents transactions affecting
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-- a particular account (or possibly several accounts, but we don't
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-- use that). It is used eg by hledger-ui's and hledger-web's register
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-- view, and hledger's aregister report, where we want to show one row
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-- per transaction, in the context of the current account. Report
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-- items consist of:
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--
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-- - the transaction, unmodified
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--
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-- - the transaction as seen in the context of the current account and query,
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-- which means:
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--
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-- - the transaction date is set to the "transaction context date":
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-- the earliest of the transaction date and any other posting dates
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-- of postings to the current account (matched by the report query).
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--
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-- - the transaction's postings are filtered, excluding any which are not
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-- matched by the report query
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--
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-- - a text description of the other account(s) posted to/from
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--
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-- - a flag indicating whether there's more than one other account involved
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--
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-- - the total increase/decrease to the current account
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--
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-- - the report transactions' running total after this transaction;
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-- or if historical balance is requested (-H), the historical running total.
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-- The historical running total includes transactions from before the
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-- report start date if one is specified, filtered by the report query.
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-- The historical running total may or may not be the account's historical
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-- running balance, depending on the report query.
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--
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-- Items are sorted by transaction register date (the earliest date the transaction
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-- posts to the current account), most recent first.
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-- Reporting intervals are currently ignored.
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--
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type AccountTransactionsReport = [AccountTransactionsReportItem] -- line items, one per transaction
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type AccountTransactionsReportItem =
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(
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Transaction -- the transaction, unmodified
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,Transaction -- the transaction, as seen from the current account
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,Bool -- is this a split (more than one posting to other accounts) ?
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,Text -- a display string describing the other account(s), if any
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,MixedAmount -- the amount posted to the current account(s) (or total amount posted)
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,MixedAmount -- the register's running total or the current account(s)'s historical balance, after this transaction
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)
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triOrigTransaction (torig,_,_,_,_,_) = torig
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triDate (_,tacct,_,_,_,_) = tdate tacct
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triAmount (_,_,_,_,a,_) = a
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triBalance (_,_,_,_,_,a) = a
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triCommodityAmount c = filterMixedAmountByCommodity c . triAmount
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triCommodityBalance c = filterMixedAmountByCommodity c . triBalance
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accountTransactionsReport :: ReportSpec -> Journal -> Query -> AccountTransactionsReport
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accountTransactionsReport rspec@ReportSpec{_rsReportOpts=ropts} j thisacctq = items
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where
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-- A depth limit should not affect the account transactions report; it should show all transactions in/below this account.
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-- Queries on currency or amount are also ignored at this stage; they are handled earlier, before valuation.
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reportq = simplifyQuery $ And [aregisterq, periodq]
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where
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aregisterq = filterQuery (not . queryIsCurOrAmt) . filterQuery (not . queryIsDepth) $ _rsQuery rspec
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periodq = Date . periodAsDateSpan $ period_ ropts
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amtq = filterQuery queryIsCurOrAmt $ _rsQuery rspec
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queryIsCurOrAmt q = queryIsSym q || queryIsAmt q
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-- Note that within this functions, we are only allowed limited
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-- transformation of the transaction postings: this is due to the need to
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-- pass the original transactions into accountTransactionsReportItem.
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-- Generally, we either include a transaction in full, or not at all.
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-- Do some limited filtering and valuing of the journal's transactions:
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-- - filter them by the account query if any,
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-- - discard amounts not matched by the currency and amount query if any,
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-- - then apply valuation if any.
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acctJournal =
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ptraceAtWith 5 (("ts3:\n"++).pshowTransactions.jtxns)
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-- maybe convert these transactions to cost or value
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. journalApplyValuationFromOpts rspec
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. ptraceAtWith 5 (("ts2:\n"++).pshowTransactions.jtxns)
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-- apply any cur:SYM filters in reportq
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. (if queryIsNull amtq then id else filterJournalAmounts amtq)
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-- only consider transactions which match thisacctq (possibly excluding postings
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-- which are not real or have the wrong status)
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. traceAt 3 ("thisacctq: "++show thisacctq)
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$ ptraceAtWith 5 (("ts1:\n"++).pshowTransactions.jtxns)
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j{jtxns = filter (matchesTransaction thisacctq . relevantPostings) $ jtxns j}
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where
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relevantPostings
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| queryIsNull realq && queryIsNull statusq = id
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| otherwise = filterTransactionPostings . simplifyQuery $ And [realq, statusq]
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realq = filterQuery queryIsReal reportq
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statusq = filterQuery queryIsStatus reportq
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startbal
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| balanceaccum_ ropts == Historical = sumPostings priorps
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| otherwise = nullmixedamt
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where
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priorps = dbg5 "priorps" . journalPostings $ filterJournalPostings priorq acctJournal
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priorq = dbg5 "priorq" $ And [thisacctq, tostartdateq, datelessreportq]
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tostartdateq =
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case mstartdate of
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Just _ -> Date (DateSpan Nothing mstartdate)
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Nothing -> None -- no start date specified, there are no prior postings
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mstartdate = queryStartDate (date2_ ropts) reportq
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datelessreportq = filterQuery (not . queryIsDateOrDate2) reportq
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items =
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accountTransactionsReportItems reportq thisacctq startbal maNegate
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-- sort by the transaction's register date, then index, for accurate starting balance
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. ptraceAtWith 5 (("ts4:\n"++).pshowTransactions.map snd)
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. sortBy (comparing (Down . fst) <> comparing (Down . tindex . snd))
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. map (\t -> (transactionRegisterDate reportq thisacctq t, t))
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$ jtxns acctJournal
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pshowTransactions :: [Transaction] -> String
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pshowTransactions = pshow . map (\t -> unwords [show $ tdate t, T.unpack $ tdescription t])
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-- | Generate transactions report items from a list of transactions,
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-- using the provided user-specified report query, a query specifying
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-- which account to use as the focus, a starting balance, and a sign-setting
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-- function.
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-- Each transaction is accompanied by the date that should be shown for it
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-- in the report, which is not necessarily the transaction date; it is
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-- the earliest of the posting dates which match both thisacctq and reportq,
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-- otherwise the transaction's date if there are no matching postings.
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accountTransactionsReportItems :: Query -> Query -> MixedAmount -> (MixedAmount -> MixedAmount)
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-> [(Day, Transaction)] -> [AccountTransactionsReportItem]
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accountTransactionsReportItems reportq thisacctq bal signfn =
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catMaybes . snd . mapAccumR (accountTransactionsReportItem reportq thisacctq signfn) bal
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accountTransactionsReportItem :: Query -> Query -> (MixedAmount -> MixedAmount) -> MixedAmount
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-> (Day, Transaction) -> (MixedAmount, Maybe AccountTransactionsReportItem)
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accountTransactionsReportItem reportq thisacctq signfn bal (d, torig)
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-- 201407: I've lost my grip on this, let's just hope for the best
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-- 201606: we now calculate change and balance from filtered postings, check this still works well for all callers XXX
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| null reportps = (bal, Nothing) -- no matched postings in this transaction, skip it
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| otherwise = (b, Just (torig, tacct{tdate=d}, numotheraccts > 1, otheracctstr, a, b))
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where
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tacct@Transaction{tpostings=reportps} = filterTransactionPostings reportq torig
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(thisacctps, otheracctps) = partition (matchesPosting thisacctq) reportps
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numotheraccts = length $ nub $ map paccount otheracctps
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otheracctstr | thisacctq == None = summarisePostingAccounts reportps -- no current account ? summarise all matched postings
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| numotheraccts == 0 = summarisePostingAccounts thisacctps -- only postings to current account ? summarise those
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| otherwise = summarisePostingAccounts otheracctps -- summarise matched postings to other account(s)
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a = signfn . maNegate $ sumPostings thisacctps
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b = bal `maPlus` a
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-- | What is the transaction's date in the context of a particular account
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-- (specified with a query) and report query, as in an account register ?
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-- It's normally the transaction's general date, but if any posting(s)
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-- matched by the report query and affecting the matched account(s) have
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-- their own earlier dates, it's the earliest of these dates.
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-- Secondary transaction/posting dates are ignored.
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transactionRegisterDate :: Query -> Query -> Transaction -> Day
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transactionRegisterDate reportq thisacctq t
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| null thisacctps = tdate t
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| otherwise = minimum $ map postingDate thisacctps
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where
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reportps = tpostings $ filterTransactionPostings reportq t
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thisacctps = filter (matchesPosting thisacctq) reportps
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-- -- | Generate a short readable summary of some postings, like
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-- -- "from (negatives) to (positives)".
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-- summarisePostings :: [Posting] -> String
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-- summarisePostings ps =
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-- case (summarisePostingAccounts froms, summarisePostingAccounts tos) of
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-- ("",t) -> "to "++t
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-- (f,"") -> "from "++f
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-- (f,t) -> "from "++f++" to "++t
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-- where
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-- (froms,tos) = partition (fromMaybe False . isNegativeMixedAmount . pamount) ps
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-- | Generate a simplified summary of some postings' accounts.
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-- To reduce noise, if there are both real and virtual postings, show only the real ones.
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summarisePostingAccounts :: [Posting] -> Text
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summarisePostingAccounts ps =
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T.intercalate ", " . map accountSummarisedName . nub $ map paccount displayps
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where
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realps = filter isReal ps
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displayps | null realps = ps
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| otherwise = realps
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-- | Split an account transactions report whose items may involve several commodities,
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-- into one or more single-commodity account transactions reports.
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accountTransactionsReportByCommodity :: AccountTransactionsReport -> [(CommoditySymbol, AccountTransactionsReport)]
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accountTransactionsReportByCommodity tr =
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[(c, filterAccountTransactionsReportByCommodity c tr) | c <- commodities tr]
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where
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commodities = nubSort . map acommodity . concatMap (amounts . triAmount)
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-- | Remove account transaction report items and item amount (and running
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-- balance amount) components that don't involve the specified
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-- commodity. Other item fields such as the transaction are left unchanged.
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filterAccountTransactionsReportByCommodity :: CommoditySymbol -> AccountTransactionsReport -> AccountTransactionsReport
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filterAccountTransactionsReportByCommodity c =
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fixTransactionsReportItemBalances . concatMap (filterTransactionsReportItemByCommodity c)
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where
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filterTransactionsReportItemByCommodity c (t,t2,s,o,a,bal)
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| c `elem` cs = [item']
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| otherwise = []
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where
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cs = map acommodity $ amounts a
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item' = (t,t2,s,o,a',bal)
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a' = filterMixedAmountByCommodity c a
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fixTransactionsReportItemBalances [] = []
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fixTransactionsReportItemBalances [i] = [i]
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fixTransactionsReportItemBalances items = reverse $ i:(go startbal is)
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where
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i:is = reverse items
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startbal = filterMixedAmountByCommodity c $ triBalance i
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go _ [] = []
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go bal ((t,t2,s,o,amt,_):is) = (t,t2,s,o,amt,bal'):go bal' is
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where bal' = bal `maPlus` amt
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-- tests
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tests_AccountTransactionsReport = testGroup "AccountTransactionsReport" [
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]
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