283 lines
14 KiB
Haskell
283 lines
14 KiB
Haskell
{-# LANGUAGE OverloadedStrings, RecordWildCards, DeriveDataTypeable, FlexibleInstances #-}
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{-|
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Here are several variants of a transactions report.
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Transactions reports are like a postings report, but more
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transaction-oriented, and (in the account-centric variant) relative to
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a some base account. They are used by hledger-web.
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-}
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module Hledger.Reports.TransactionsReports (
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TransactionsReport,
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TransactionsReportItem,
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AccountTransactionsReport,
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AccountTransactionsReportItem,
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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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journalTransactionsReport,
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accountTransactionsReport,
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transactionsReportByCommodity,
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transactionRegisterDate,
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tests_TransactionsReports
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)
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where
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import Data.List
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import Data.Ord
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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
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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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-- | A transactions report includes a list of transactions
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-- (posting-filtered and unfiltered variants), a running balance, and some
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-- other information helpful for rendering a register view (a flag
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-- indicating multiple other accounts and a display string describing
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-- them) with or without a notion of current account(s).
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-- Two kinds of report use this data structure, see journalTransactionsReport
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-- and accountTransactionsReport below for details.
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type TransactionsReport = (String -- label for the balance column, eg "balance" or "total"
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,[TransactionsReportItem] -- line items, one per transaction
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)
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type TransactionsReportItem = (Transaction -- the original journal transaction, unmodified
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,Transaction -- the transaction as seen from a particular account, with postings maybe filtered
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,Bool -- is this a split, ie more than one other account posting
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,String -- a display string describing the other account(s), if any
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,MixedAmount -- the amount posted to the current account(s) by the filtered postings (or total amount posted)
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,MixedAmount -- the running total of item amounts, starting from zero;
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-- or with --historical, the running total including items
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-- (matched by the report query) preceding the report period
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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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-------------------------------------------------------------------------------
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-- | Select transactions from the whole journal. This is similar to a
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-- "postingsReport" except with transaction-based report items which
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-- are ordered most recent first. XXX Or an EntriesReport - use that instead ?
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-- This is used by hledger-web's journal view.
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journalTransactionsReport :: ReportOpts -> Journal -> Query -> TransactionsReport
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journalTransactionsReport opts j q = (totallabel, items)
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where
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-- XXX items' first element should be the full transaction with all postings
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items = reverse $ accountTransactionsReportItems q None nullmixedamt id ts
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ts = sortBy (comparing date) $ filter (q `matchesTransaction`) $ jtxns $ journalSelectingAmountFromOpts opts j
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date = transactionDateFn opts
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-------------------------------------------------------------------------------
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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 account
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-- register view, where we want to show one row per transaction, in
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-- the context of the current account. Report 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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-- which can be different from the transaction's general date:
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-- if postings to the current account (and matched by the report query)
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-- have their own dates, it's the earliest of these dates.
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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 =
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(String -- label for the balance column, eg "balance" or "total"
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,[AccountTransactionsReportItem] -- line items, one per transaction
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)
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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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,String -- 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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accountTransactionsReport :: ReportOpts -> Journal -> Query -> Query -> AccountTransactionsReport
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accountTransactionsReport opts j reportq thisacctq = (label, items)
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where
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-- a depth limit does not affect the account transactions report
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-- seems unnecessary for some reason XXX
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reportq' = -- filterQuery (not . queryIsDepth)
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reportq
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-- get all transactions, with amounts converted to cost basis if -B
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ts1 = jtxns $ journalSelectingAmountFromOpts opts j
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-- apply any cur:SYM filters in reportq'
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symq = filterQuery queryIsSym reportq'
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ts2 = (if queryIsNull symq then id else map (filterTransactionAmounts symq)) ts1
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-- keep just the transactions affecting this account (via possibly realness or status-filtered postings)
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realq = filterQuery queryIsReal reportq'
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statusq = filterQuery queryIsStatus reportq'
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ts3 = filter (matchesTransaction thisacctq . filterTransactionPostings (And [realq, statusq])) ts2
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-- sort by the transaction's register date, for accurate starting balance
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ts = sortBy (comparing (transactionRegisterDate reportq' thisacctq)) ts3
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(startbal,label)
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| balancetype_ opts == HistoricalBalance = (sumPostings priorps, balancelabel)
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| otherwise = (nullmixedamt, totallabel)
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where
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priorps = dbg1 "priorps" $
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filter (matchesPosting
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(dbg1 "priorq" $
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And [thisacctq, tostartdateq, datelessreportq]))
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$ transactionsPostings ts
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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_ opts) reportq'
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datelessreportq = filterQuery (not . queryIsDateOrDate2) reportq'
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items = reverse $ -- see also registerChartHtml
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accountTransactionsReportItems reportq' thisacctq startbal negate ts
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totallabel = "Period Total"
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balancelabel = "Historical Total"
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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, a sign-setting
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-- function and a balance-summing function. Or with a None current account
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-- query, this can also be used for the journalTransactionsReport.
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accountTransactionsReportItems :: Query -> Query -> MixedAmount -> (MixedAmount -> MixedAmount) -> [Transaction] -> [TransactionsReportItem]
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accountTransactionsReportItems _ _ _ _ [] = []
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accountTransactionsReportItems reportq thisacctq bal signfn (torig:ts) =
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case i of Just i' -> i':is
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Nothing -> is
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-- 201403: This is used for both accountTransactionsReport and journalTransactionsReport, which makes it a bit overcomplicated
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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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where
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tfiltered@Transaction{tpostings=reportps} = filterTransactionPostings reportq torig
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tacct = tfiltered{tdate=transactionRegisterDate reportq thisacctq tfiltered}
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(i,bal') = case reportps of
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[] -> (Nothing,bal) -- no matched postings in this transaction, skip it
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_ -> (Just (torig, tacct, numotheraccts > 1, otheracctstr, a, b), b)
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where
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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 $ negate $ sum $ map pamount thisacctps
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b = bal + a
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is = accountTransactionsReportItems reportq thisacctq bal' signfn ts
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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] -> String
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summarisePostingAccounts ps =
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(intercalate ", " . map (T.unpack . accountSummarisedName) . nub . map paccount) displayps -- XXX pack
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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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-------------------------------------------------------------------------------
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-- | Split a transactions report whose items may involve several commodities,
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-- into one or more single-commodity transactions reports.
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transactionsReportByCommodity :: TransactionsReport -> [(CommoditySymbol, TransactionsReport)]
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transactionsReportByCommodity tr =
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[(c, filterTransactionsReportByCommodity c tr) | c <- transactionsReportCommodities tr]
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where
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transactionsReportCommodities (_,items) =
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nub $ sort $ map acommodity $ concatMap (amounts . triAmount) items
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-- Remove 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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filterTransactionsReportByCommodity :: CommoditySymbol -> TransactionsReport -> TransactionsReport
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filterTransactionsReportByCommodity c (label,items) =
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(label, fixTransactionsReportItemBalances $ concat [filterTransactionsReportItemByCommodity c i | i <- items])
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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 + amt
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-------------------------------------------------------------------------------
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-- tests
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tests_TransactionsReports = tests "TransactionsReports" [
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]
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