461 lines
23 KiB
Haskell
461 lines
23 KiB
Haskell
{-# LANGUAGE FlexibleInstances #-}
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE RecordWildCards #-}
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{-# LANGUAGE ScopedTypeVariables #-}
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{-|
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Multi-column balance reports, used by the balance command.
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-}
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module Hledger.Reports.MultiBalanceReport (
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MultiBalanceReport,
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MultiBalanceReportRow,
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multiBalanceReport,
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multiBalanceReportWith,
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balanceReportFromMultiBalanceReport,
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tableAsText,
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-- -- * Tests
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tests_MultiBalanceReport
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)
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where
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import Data.List
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import Data.List.Extra (nubSort)
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import qualified Data.Map as M
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import Data.Maybe
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import Data.Ord
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import Data.Time.Calendar
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import Safe
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import Text.Tabular as T
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import Text.Tabular.AsciiWide
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import Hledger.Data
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import Hledger.Query
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import Hledger.Utils
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import Hledger.Read (mamountp')
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import Hledger.Reports.ReportOptions
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import Hledger.Reports.ReportTypes
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import Hledger.Reports.BalanceReport
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-- | A multi balance report is a kind of periodic report, where the amounts
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-- correspond to balance changes or ending balances in a given period. It has:
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--
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-- 1. a list of each column's period (date span)
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--
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-- 2. a list of rows, each containing:
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--
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-- * the full account name
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--
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-- * the account's depth
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--
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-- * A list of amounts, one for each column.
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--
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-- * the total of the row's amounts for a periodic report
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--
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-- * the average of the row's amounts
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--
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-- 3. the column totals, and the overall grand total (or zero for
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-- cumulative/historical reports) and grand average.
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type MultiBalanceReport = PeriodicReport AccountName MixedAmount
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type MultiBalanceReportRow = PeriodicReportRow AccountName MixedAmount
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-- type alias just to remind us which AccountNames might be depth-clipped, below.
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type ClippedAccountName = AccountName
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-- | Generate a multicolumn balance report for the matched accounts,
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-- showing the change of balance, accumulated balance, or historical balance
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-- in each of the specified periods. Does not support tree-mode boring parent eliding.
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-- If the normalbalance_ option is set, it adjusts the sorting and sign of amounts
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-- (see ReportOpts and CompoundBalanceCommand).
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-- hledger's most powerful and useful report, used by the balance
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-- command (in multiperiod mode) and (via multiBalanceReport') by the bs/cf/is commands.
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multiBalanceReport :: Day -> ReportOpts -> Journal -> MultiBalanceReport
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multiBalanceReport today ropts j =
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multiBalanceReportWith ropts q j (journalPriceOracle infer j)
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where
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q = queryFromOpts today ropts
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infer = infer_value_ ropts
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-- | A helper for multiBalanceReport. This one takes an explicit Query
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-- instead of deriving one from ReportOpts, and an extra argument, a
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-- PriceOracle to be used for looking up market prices. Commands which
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-- run multiple reports (bs etc.) can generate the price oracle just
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-- once for efficiency, passing it to each report by calling this
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-- function directly.
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multiBalanceReportWith :: ReportOpts -> Query -> Journal -> PriceOracle -> MultiBalanceReport
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multiBalanceReportWith ropts@ReportOpts{..} q j priceoracle =
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(if invert_ then prNegate else id) $
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PeriodicReport colspans mappedsortedrows mappedtotalsrow
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where
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----------------------------------------------------------------------
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-- 1. Queries, report/column dates.
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symq = dbg "symq" $ filterQuery queryIsSym $ dbg "requested q" q
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depthq = dbg "depthq" $ filterQuery queryIsDepth q
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depth = queryDepth depthq
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depthless = dbg "depthless" . filterQuery (not . queryIsDepth)
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datelessq = dbg "datelessq" $ filterQuery (not . queryIsDateOrDate2) q
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dateqcons = if date2_ then Date2 else Date
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-- The date span specified by -b/-e/-p options and query args if any.
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requestedspan = dbg "requestedspan" $ queryDateSpan date2_ q
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-- If the requested span is open-ended, close it using the journal's end dates.
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-- This can still be the null (open) span if the journal is empty.
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requestedspan' = dbg "requestedspan'" $ requestedspan `spanDefaultsFrom` journalDateSpan date2_ j
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-- The list of interval spans enclosing the requested span.
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-- This list can be empty if the journal was empty,
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-- or if hledger-ui has added its special date:-tomorrow to the query
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-- and all txns are in the future.
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intervalspans = dbg "intervalspans" $ splitSpan interval_ requestedspan'
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-- The requested span enlarged to enclose a whole number of intervals.
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-- This can be the null span if there were no intervals.
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reportspan = dbg "reportspan" $ DateSpan (maybe Nothing spanStart $ headMay intervalspans)
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(maybe Nothing spanEnd $ lastMay intervalspans)
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-- The user's query with no depth limit, and expanded to the report span
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-- if there is one (otherwise any date queries are left as-is, which
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-- handles the hledger-ui+future txns case above).
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reportq = dbg "reportq" $ depthless $
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if reportspan == nulldatespan
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then q
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else And [datelessq, reportspandatesq]
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where
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reportspandatesq = dbg "reportspandatesq" $ dateqcons reportspan
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-- The date spans to be included as report columns.
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colspans :: [DateSpan] = dbg "colspans" $ splitSpan interval_ displayspan
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where
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displayspan
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| empty_ = dbg "displayspan (-E)" reportspan -- all the requested intervals
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| otherwise = dbg "displayspan" $ requestedspan `spanIntersect` matchedspan -- exclude leading/trailing empty intervals
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matchedspan = dbg "matchedspan" . daysSpan $ map snd ps
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-- If doing cost valuation, convert amounts to cost.
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j' = journalSelectingAmountFromOpts ropts j
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----------------------------------------------------------------------
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-- 2. Calculate starting balances, if needed for -H
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-- Balances at report start date, from all earlier postings which otherwise match the query.
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-- These balances are unvalued except maybe converted to cost.
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startbals :: [(AccountName, MixedAmount)] = dbg' "startbals" $
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startingBalances ropts q j reportspan
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-- The matched accounts with a starting balance. All of these should appear
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-- in the report even if they have no postings during the report period.
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startaccts = dbg'' "startaccts" $ map fst startbals
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-- Helpers to look up an account's starting balance.
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startingBalanceFor a = fromMaybe nullmixedamt $ lookup a startbals
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----------------------------------------------------------------------
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-- 3. Gather postings for each column.
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-- Postings matching the query within the report period.
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ps :: [(Posting, Day)] =
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dbg'' "ps" $
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map postingWithDate $
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journalPostings $
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filterJournalAmounts symq $ -- remove amount parts excluded by cur:
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filterJournalPostings reportq $ -- remove postings not matched by (adjusted) query
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j'
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where
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postingWithDate p = case whichDateFromOpts ropts of
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PrimaryDate -> (p, postingDate p)
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SecondaryDate -> (p, postingDate2 p)
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-- Group postings into their columns, with the column end dates.
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colps :: [([Posting], Maybe Day)] =
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dbg'' "colps"
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[ (posts, end) | (DateSpan _ end, posts) <- M.toList colMap ]
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where
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colMap = foldr addPosting emptyMap ps
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addPosting (p, d) = maybe id (M.adjust (p:)) $ latestSpanContaining colspans d
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emptyMap = M.fromList . zip colspans $ repeat []
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----------------------------------------------------------------------
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-- 4. Calculate account balance changes in each column.
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-- In each column, gather the accounts that have postings and their change amount.
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acctChangesFromPostings :: [Posting] -> [(ClippedAccountName, MixedAmount)]
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acctChangesFromPostings ps = [(aname a, (if tree_ ropts then aibalance else aebalance) a) | a <- as]
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where
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as = depthLimit $
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(if tree_ ropts then id else filter ((>0).anumpostings)) $
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drop 1 $ accountsFromPostings ps
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depthLimit
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| tree_ ropts = filter ((depthq `matchesAccount`).aname) -- exclude deeper balances
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| otherwise = clipAccountsAndAggregate depth -- aggregate deeper balances at the depth limit
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colacctchanges :: [[(ClippedAccountName, MixedAmount)]] =
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dbg'' "colacctchanges" $ map (acctChangesFromPostings . fst) colps
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----------------------------------------------------------------------
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-- 5. Gather the account balance changes into a regular matrix including the accounts
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-- from all columns (and with -H, accounts with starting balances), adding zeroes where needed.
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-- All account names that will be displayed, possibly depth-clipped.
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displayaccts :: [ClippedAccountName] =
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dbg'' "displayaccts" $
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(if tree_ ropts then expandAccountNames else id) $
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nub $ map (clipOrEllipsifyAccountName depth) $
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if empty_ || balancetype_ == HistoricalBalance
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then nubSort $ startaccts ++ allpostedaccts
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else allpostedaccts
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where
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allpostedaccts :: [AccountName] =
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dbg'' "allpostedaccts" . sort . accountNamesFromPostings $ map fst ps
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-- Each column's balance changes for each account, adding zeroes where needed.
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colallacctchanges :: [[(ClippedAccountName, MixedAmount)]] =
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dbg'' "colallacctchanges"
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[ sortOn fst $ unionBy (\(a,_) (a',_) -> a == a') postedacctchanges zeroes
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| postedacctchanges <- colacctchanges ]
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where zeroes = [(a, nullmixedamt) | a <- displayaccts]
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-- Transpose to get each account's balance changes across all columns.
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acctchanges :: [(ClippedAccountName, [MixedAmount])] =
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dbg'' "acctchanges"
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[(a, map snd abs) | abs@((a,_):_) <- transpose colallacctchanges] -- never null, or used when null...
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----------------------------------------------------------------------
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-- 6. Build the report rows.
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-- One row per account, with account name info, row amounts, row total and row average.
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rows :: [MultiBalanceReportRow] =
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dbg'' "rows" $
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[ PeriodicReportRow a (accountNameLevel a) valuedrowbals rowtot rowavg
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| (a,changes) <- dbg'' "acctchanges" acctchanges
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-- The row amounts to be displayed: per-period changes,
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-- zero-based cumulative totals, or
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-- starting-balance-based historical balances.
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, let rowbals = dbg'' "rowbals" $ case balancetype_ of
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PeriodChange -> changes
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CumulativeChange -> drop 1 $ scanl (+) 0 changes
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HistoricalBalance -> drop 1 $ scanl (+) (startingBalanceFor a) changes
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-- We may be converting amounts to value, per hledger_options.m4.md "Effect of --value on reports".
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, let valuedrowbals = dbg'' "valuedrowbals" $ [avalue periodlastday amt | (amt,periodlastday) <- zip rowbals lastdays]
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-- The total and average for the row.
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-- These are always simply the sum/average of the displayed row amounts.
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-- Total for a cumulative/historical report is always zero.
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, let rowtot = if balancetype_==PeriodChange then sum valuedrowbals else 0
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, let rowavg = averageMixedAmounts valuedrowbals
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, empty_ || depth == 0 || any (not . mixedAmountLooksZero) valuedrowbals
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]
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where
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avalue periodlast =
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maybe id (mixedAmountApplyValuation priceoracle styles periodlast mreportlast today multiperiod) value_
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where
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-- Some things needed if doing valuation.
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styles = journalCommodityStyles j
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mreportlast = reportPeriodLastDay ropts
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today = fromMaybe (error' "multiBalanceReport: could not pick a valuation date, ReportOpts today_ is unset") today_ -- XXX shouldn't happen
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multiperiod = interval_ /= NoInterval
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-- The last day of each column's subperiod.
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lastdays =
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map ((maybe
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(error' "multiBalanceReport: expected all spans to have an end date") -- XXX should not happen
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(addDays (-1)))
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. spanEnd) colspans
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----------------------------------------------------------------------
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-- 7. Sort the report rows.
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-- Sort the rows by amount or by account declaration order. This is a bit tricky.
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-- TODO: is it always ok to sort report rows after report has been generated, as a separate step ?
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sortedrows :: [MultiBalanceReportRow] =
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dbg' "sortedrows" $
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sortrows rows
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where
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sortrows
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| sort_amount_ && accountlistmode_ == ALTree = sortTreeMBRByAmount
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| sort_amount_ = sortFlatMBRByAmount
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| otherwise = sortMBRByAccountDeclaration
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where
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-- Sort the report rows, representing a tree of accounts, by row total at each level.
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-- Similar to sortMBRByAccountDeclaration/sortAccountNamesByDeclaration.
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sortTreeMBRByAmount :: [MultiBalanceReportRow] -> [MultiBalanceReportRow]
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sortTreeMBRByAmount rows = sortedrows
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where
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anamesandrows = [(prrName r, r) | r <- rows]
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anames = map fst anamesandrows
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atotals = [(prrName r, prrTotal r) | r <- rows]
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accounttree = accountTree "root" anames
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accounttreewithbals = mapAccounts setibalance accounttree
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where
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-- should not happen, but it's dangerous; TODO
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setibalance a = a{aibalance=fromMaybe (error "sortTreeMBRByAmount 1") $ lookup (aname a) atotals}
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sortedaccounttree = sortAccountTreeByAmount (fromMaybe NormallyPositive normalbalance_) accounttreewithbals
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sortedanames = map aname $ drop 1 $ flattenAccounts sortedaccounttree
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sortedrows = sortAccountItemsLike sortedanames anamesandrows
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-- Sort the report rows, representing a flat account list, by row total.
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sortFlatMBRByAmount = sortBy (maybeflip $ comparing (normaliseMixedAmountSquashPricesForDisplay . prrTotal))
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where
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maybeflip = if normalbalance_ == Just NormallyNegative then id else flip
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-- Sort the report rows by account declaration order then account name.
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sortMBRByAccountDeclaration rows = sortedrows
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where
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anamesandrows = [(prrName r, r) | r <- rows]
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anames = map fst anamesandrows
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sortedanames = sortAccountNamesByDeclaration j (tree_ ropts) anames
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sortedrows = sortAccountItemsLike sortedanames anamesandrows
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----------------------------------------------------------------------
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-- 8. Build the report totals row.
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-- Calculate the column totals. These are always the sum of column amounts.
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highestlevelaccts = [a | a <- displayaccts, not $ any (`elem` displayaccts) $ init $ expandAccountName a]
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colamts = transpose . map prrAmounts $ filter isHighest rows
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where isHighest row = not (tree_ ropts) || prrName row `elem` highestlevelaccts
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coltotals :: [MixedAmount] =
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dbg'' "coltotals" $ map sum colamts
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-- Calculate the grand total and average. These are always the sum/average
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-- of the column totals.
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[grandtotal,grandaverage] =
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let amts = map ($ map sum colamts)
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[if balancetype_==PeriodChange then sum else const 0
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,averageMixedAmounts
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]
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in amts
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-- Totals row.
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totalsrow :: PeriodicReportRow () MixedAmount =
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dbg' "totalsrow" $ PeriodicReportRow () 0 coltotals grandtotal grandaverage
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----------------------------------------------------------------------
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-- 9. Map the report rows to percentages if needed
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-- It is not correct to do this before step 6 due to the total and average columns.
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-- This is not done in step 6, since the report totals are calculated in 8.
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-- Perform the divisions to obtain percentages
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mappedsortedrows :: [MultiBalanceReportRow] =
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if not percent_ then sortedrows
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else dbg'' "mappedsortedrows"
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[ PeriodicReportRow aname alevel
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(zipWith perdivide rowvals coltotals)
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(rowtotal `perdivide` grandtotal)
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(rowavg `perdivide` grandaverage)
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| PeriodicReportRow aname alevel rowvals rowtotal rowavg <- sortedrows
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]
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mappedtotalsrow :: PeriodicReportRow () MixedAmount
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| percent_ = dbg'' "mappedtotalsrow" $ PeriodicReportRow () 0
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(map (\t -> perdivide t t) coltotals)
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(perdivide grandtotal grandtotal)
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(perdivide grandaverage grandaverage)
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| otherwise = totalsrow
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-- | Calculate starting balances, if needed for -H
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--
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-- Balances at report start date, from all earlier postings which otherwise match the query.
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-- These balances are unvalued except maybe converted to cost.
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startingBalances :: ReportOpts -> Query -> Journal -> DateSpan -> [(AccountName, MixedAmount)]
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startingBalances ropts q j reportspan = map (\(a,_,_,b) -> (a,b)) startbalanceitems
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where
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(startbalanceitems,_) = dbg'' "starting balance report" $
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balanceReport ropts''{value_=Nothing, percent_=False} startbalq j
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-- q projected back before the report start date.
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-- When there's no report start date, in case there are future txns (the hledger-ui case above),
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-- we use emptydatespan to make sure they aren't counted as starting balance.
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startbalq = dbg'' "startbalq" $ And [datelessq, precedingspanq]
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datelessq = dbg "datelessq" $ filterQuery (not . queryIsDateOrDate2) q
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ropts' | tree_ ropts = ropts{no_elide_=True}
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| otherwise = ropts{accountlistmode_=ALFlat}
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ropts'' = ropts'{period_ = precedingperiod}
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precedingperiod = dateSpanAsPeriod . spanIntersect precedingspan .
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periodAsDateSpan $ period_ ropts
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precedingspan = DateSpan Nothing $ spanStart reportspan
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precedingspanq = (if date2_ ropts then Date2 else Date) $ case precedingspan of
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DateSpan Nothing Nothing -> emptydatespan
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a -> a
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-- | Generates a simple non-columnar BalanceReport, but using multiBalanceReport,
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-- in order to support --historical. Does not support tree-mode boring parent eliding.
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-- If the normalbalance_ option is set, it adjusts the sorting and sign of amounts
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-- (see ReportOpts and CompoundBalanceCommand).
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balanceReportFromMultiBalanceReport :: ReportOpts -> Query -> Journal -> BalanceReport
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balanceReportFromMultiBalanceReport opts q j = (rows', total)
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where
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PeriodicReport _ rows (PeriodicReportRow _ _ totals _ _) =
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multiBalanceReportWith opts q j (journalPriceOracle (infer_value_ opts) j)
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rows' = [( a
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, if flat_ opts then a else accountLeafName a -- BalanceReport expects full account name here with --flat
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, if tree_ opts then d-1 else 0 -- BalanceReport uses 0-based account depths
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, headDef nullmixedamt amts -- 0 columns is illegal, should not happen, return zeroes if it does
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) | PeriodicReportRow a d amts _ _ <- rows]
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total = headDef nullmixedamt totals
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-- Local debug helper
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-- add a prefix to this function's debug output
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dbg s = let p = "multiBalanceReport" in Hledger.Utils.dbg3 (p++" "++s)
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dbg' s = let p = "multiBalanceReport" in Hledger.Utils.dbg4 (p++" "++s)
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dbg'' s = let p = "multiBalanceReport" in Hledger.Utils.dbg5 (p++" "++s)
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-- dbg = const id -- exclude this function from debug output
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-- common rendering helper, XXX here for now
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tableAsText :: ReportOpts -> (a -> String) -> Table String String a -> String
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tableAsText (ReportOpts{pretty_tables_ = pretty}) showcell =
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unlines
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. trimborder
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. lines
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. render pretty id id showcell
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. align
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where
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trimborder = drop 1 . init . map (drop 1 . init)
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align (Table l t d) = Table l' t d
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where
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acctswidth = maximum' $ map strWidth (headerContents l)
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l' = padRightWide acctswidth <$> l
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-- tests
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tests_MultiBalanceReport = tests "MultiBalanceReport" [
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let
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amt0 = Amount {acommodity="$", aquantity=0, aprice=Nothing, astyle=AmountStyle {ascommodityside = L, ascommodityspaced = False, asprecision = 2, asdecimalpoint = Just '.', asdigitgroups = Nothing}, aismultiplier=False}
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(opts,journal) `gives` r = do
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let (eitems, etotal) = r
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(PeriodicReport _ aitems atotal) = multiBalanceReport nulldate opts journal
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showw (PeriodicReportRow acct indent lAmt amt amt')
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= (acct, accountLeafName acct, indent, map showMixedAmountDebug lAmt, showMixedAmountDebug amt, showMixedAmountDebug amt')
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(map showw aitems) @?= (map showw eitems)
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showMixedAmountDebug (prrTotal atotal) @?= showMixedAmountDebug etotal -- we only check the sum of the totals
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in
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tests "multiBalanceReport" [
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test "null journal" $
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(defreportopts, nulljournal) `gives` ([], Mixed [nullamt])
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,test "with -H on a populated period" $
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(defreportopts{period_= PeriodBetween (fromGregorian 2008 1 1) (fromGregorian 2008 1 2), balancetype_=HistoricalBalance}, samplejournal) `gives`
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(
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[ PeriodicReportRow "assets:bank:checking" 3 [mamountp' "$1.00"] (Mixed [nullamt]) (Mixed [amt0 {aquantity=1}])
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, PeriodicReportRow "income:salary" 2 [mamountp' "$-1.00"] (Mixed [nullamt]) (Mixed [amt0 {aquantity=(-1)}])
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],
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Mixed [nullamt])
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-- ,test "a valid history on an empty period" $
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-- (defreportopts{period_= PeriodBetween (fromGregorian 2008 1 2) (fromGregorian 2008 1 3), balancetype_=HistoricalBalance}, samplejournal) `gives`
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-- (
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-- [
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-- ("assets:bank:checking","checking",3, [mamountp' "$1.00"], mamountp' "$1.00",Mixed [amt0 {aquantity=1}])
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-- ,("income:salary","salary",2, [mamountp' "$-1.00"], mamountp' "$-1.00",Mixed [amt0 {aquantity=(-1)}])
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-- ],
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-- Mixed [usd0])
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-- ,test "a valid history on an empty period (more complex)" $
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-- (defreportopts{period_= PeriodBetween (fromGregorian 2009 1 1) (fromGregorian 2009 1 2), balancetype_=HistoricalBalance}, samplejournal) `gives`
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-- (
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-- [
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-- ("assets:bank:checking","checking",3, [mamountp' "$1.00"], mamountp' "$1.00",Mixed [amt0 {aquantity=1}])
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-- ,("assets:bank:saving","saving",3, [mamountp' "$1.00"], mamountp' "$1.00",Mixed [amt0 {aquantity=1}])
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-- ,("assets:cash","cash",2, [mamountp' "$-2.00"], mamountp' "$-2.00",Mixed [amt0 {aquantity=(-2)}])
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-- ,("expenses:food","food",2, [mamountp' "$1.00"], mamountp' "$1.00",Mixed [amt0 {aquantity=(1)}])
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-- ,("expenses:supplies","supplies",2, [mamountp' "$1.00"], mamountp' "$1.00",Mixed [amt0 {aquantity=(1)}])
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-- ,("income:gifts","gifts",2, [mamountp' "$-1.00"], mamountp' "$-1.00",Mixed [amt0 {aquantity=(-1)}])
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-- ,("income:salary","salary",2, [mamountp' "$-1.00"], mamountp' "$-1.00",Mixed [amt0 {aquantity=(-1)}])
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-- ],
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-- Mixed [usd0])
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]
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]
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