Merged PR 18025: Mail search function implemented

- searching emails
- show course qualification in separate columns

Related work items: #2978, #2979
This commit is contained in:
Steffen Jost 2025-03-10 15:16:12 +00:00
commit 479e807d6d
13 changed files with 156 additions and 47 deletions

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@ -28,5 +28,8 @@ PrintLmsUser: ELearning Id
PrintJobs: Druckaufräge
PrintLetterType: Brieftypkürzel
MCActDummy: Platzhalter
MCActResendEmail: EMail Kopie versenden
MCActResendEmailTooltip: Eine unveränderte Kopie der EMail erneut versenden. Nur die vorherigen Empfänger werden offiziell aufgeführt, sie erhalten jedoch keine neue Kopie.
MCActResendEmailInfo n@Int recv@Text: #{pluralDEnN n "EMail Kopie"} wurden an #{recv} versandt.
CCActDummy: Platzhalter

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@ -28,5 +28,8 @@ PrintLmsUser: Elearning id
PrintJobs: Print jobs
PrintLetterType: Letter type shorthand
MCActDummy: Placeholder
MCActResendEmail: Resend email copy
MCActResendEmailTooltip: Resend an unchanged copy of the email. Only previous recipients will officially be listed, but they will not receive another copy.
MCActResendEmailInfo n recv: #{n} #{noneOneMoreEN n "email copy" "email copy" "email copies"} were sent to #{recv} only.
CCActDummy: Placeholder

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@ -5,6 +5,7 @@
QualificationShort: Kürzel
QualificationName: Qualifikation
QualificationDescription: Beschreibung
QualificationValidReason qsh@Text: #{qsh} Gültigkeit
QualificationValidIndicator: Gültigkeit
QualificationValidDuration: Gültigkeitsdauer
QualificationAuditDuration: Aufbewahrungszeitraum ELearning Log

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@ -5,6 +5,7 @@
QualificationShort: Shorthand
QualificationName: Qualification
QualificationDescription: Description
QualificationValidReason qsh: #{qsh} Validity
QualificationValidIndicator: Validity
QualificationValidDuration: Validity period
QualificationAuditDuration: Audit log retention period

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@ -121,4 +121,6 @@ TableFilterCommaName: Mehrere Namen mit Komma trennen.
TableFilterCommaNameNr: Mehrere Namen oder exakte Nummern mit Komma trennen.
TableUserEdit: Benutzer bearbeiten
TableRows: Zeilen
TableUserParkingToken day@Text: Parkmarke #{day}
TableUserParkingToken day@Text: Parkmarke #{day}
TableFilterSentBefore: Gesendet bis
TableFilterSentAfter: Gesendet ab

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@ -121,4 +121,6 @@ TableFilterCommaName: Separate names by comma.
TableFilterCommaNameNr: Separate names and exact numbers by comma.
TableUserEdit: Edit user
TableRows: Rows
TableUserParkingToken day: Parking token #{day}
TableUserParkingToken day: Parking token #{day}
TableFilterSentBefore: Sent before
TableFilterSentAfter: Sent after

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@ -1,4 +1,4 @@
-- SPDX-FileCopyrightText: 2022-2024 Gregor Kleen <gregor.kleen@ifi.lmu.de>,Steffen Jost <jost@tcs.ifi.lmu.de>,Steffen Jost <s.jost@fraport.de>
-- SPDX-FileCopyrightText: 2022-2025 Gregor Kleen <gregor.kleen@ifi.lmu.de>,Steffen Jost <jost@tcs.ifi.lmu.de>,Steffen Jost <s.jost@fraport.de>
--
-- SPDX-License-Identifier: AGPL-3.0-or-later
@ -12,7 +12,9 @@ module Database.Esqueleto.Utils
, isNumerical, hasLetter
, isInfixOf, hasInfix
, isPrefixOf_, hasPrefix_
, strConcat, substring
, strConcat
, substring, substringRegex
, decodeBase64, encodeEscape, mailContentContains
, (=?.), (?=.)
, (=~.), (~=.)
, (>~.), (<~.)
@ -98,7 +100,7 @@ import Data.Monoid (Last(..))
import Utils (commaSeparatedText)
-- import Utils.Set (concatMapSet)
import Model.Types.Mail (MailContent)
{-# ANN any ("HLint: ignore Use any" :: String) #-}
{-# ANN all ("HLint: ignore Use all" :: String) #-}
@ -259,6 +261,37 @@ substring (E.ERaw _m1 f1) (E.ERaw _m2 f2) (E.ERaw _m3 f3)
, strVals <> fromiVals <> foriVals
)
substringRegex :: ( E.SqlString str, E.SqlString from)
=> E.SqlExpr (E.Value str)
-> E.SqlExpr (E.Value from)
-> E.SqlExpr (E.Value str)
substringRegex (E.ERaw _m1 f1) (E.ERaw _m2 f2)
= E.ERaw E.noMeta $ \_nParens info ->
let (strTLB, strVals) = f1 E.Parens info
(fromiTLB, fromiVals) = f2 E.Parens info
in ( "SUBSTRING" <> E.parens (E.parens strTLB <> " FROM " <> E.parens fromiTLB)
, strVals <> fromiVals
)
-- useful for searching within MailContent in db
decodeBase64 :: E.SqlString str => E.SqlExpr (E.Value str) -> E.SqlExpr (E.Value str)
decodeBase64 = E.unsafeSqlFunction "decode" . (, E.val "base64" :: E.SqlExpr (E.Value Text))
encodeEscape :: E.SqlString str => E.SqlExpr (E.Value str) -> E.SqlExpr (E.Value str)
encodeEscape = E.unsafeSqlFunction "encode" . (, E.val "escape" :: E.SqlExpr (E.Value Text))
mailContentContains :: E.SqlString str => E.SqlExpr (E.Value MailContent) -> E.SqlExpr (E.Value str) -> E.SqlExpr (E.Value Bool)
mailContentContains hay needle = hasNeedle plainText E.||. hasNeedle encodedBase64
where
hayText :: E.SqlExpr (E.Value Text) = E.unsafeSqlCastAs "text" hay
hasNeedle = isInfixOf needle
encodedBase64 = encodeEscape $ decodeBase64 $
substringRegex hayText $ E.val reB64
plainText = substringRegex hayText $ E.val rePlain
reB64 :: Text = ".*\\{\"type\": \"text/plain; charset=utf-8\", \"content\": \\{\"content\": \"(.*?)\", \"encoding\": \"base64\"\\}.*"
rePlain :: Text = ".*\\{\"type\": \"text/plain; charset=utf-8\", \"content\": \"(.*?)\", \"headers\": \\[\\], \"encoding\": \"quoted-printable-text\".*"
explicitUnsafeCoerceSqlExprValue :: forall b a.
Text
-> E.SqlExpr (E.Value a)
@ -863,4 +896,4 @@ truncateTable :: (MonadIO m, BackendCompatible SqlBackend backend, PersistEntity
=> proxy record -> ReaderT backend m ()
truncateTable tbl =
let tblName :: Text = P.unEntityNameDB $ P.entityDB $ P.entityDef tbl
in E.rawExecute ("TRUNCATE TABLE " <> tblName <> " RESTART IDENTITY") []
in E.rawExecute ("TRUNCATE TABLE " <> tblName <> " RESTART IDENTITY") []

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@ -1,4 +1,4 @@
-- SPDX-FileCopyrightText: 2022 Gregor Kleen <gregor.kleen@ifi.lmu.de>,Steffen Jost <jost@tcs.ifi.lmu.de>
-- SPDX-FileCopyrightText: 2022-2925 Gregor Kleen <gregor.kleen@ifi.lmu.de>,Steffen Jost <jost@tcs.ifi.lmu.de>,Steffen Jost <s.jost@fraport.de>
--
-- SPDX-License-Identifier: AGPL-3.0-or-later
@ -93,6 +93,7 @@ makeDemoForm n = identifyForm ("adminTestForm" :: Text) $ \html -> do
getAdminTestR, postAdminTestR :: Handler Html -- Demo Page. Referenzimplementierungen sollte hier gezeigt werden!
getAdminTestR = postAdminTestR
postAdminTestR = do
uid <- requireAuthId -- this is an admin-only route anyway
((btnResult, btnWdgt), btnEnctype) <- runFormPost $ identifyForm ("buttons" :: Text) (buttonForm :: Form ButtonCreate)
let btnForm = wrapForm btnWdgt def
{ formAction = Just $ SomeRoute AdminTestR
@ -101,7 +102,9 @@ postAdminTestR = do
}
case btnResult of
(FormSuccess CreateInf) -> addMessage Info "Informatik-Knopf gedrückt"
(FormSuccess CreateMath) -> addMessage Warning "Knopf Mathematik erkannt"
(FormSuccess CreateMath) -> do
void $ queueJob $ JobUserNotification { jRecipient = uid, jNotification = NotificationUserAuthModeUpdate uid }
addMessage Warning "Knopf Mathematik erkannt"
(FormSuccess CrashApp) -> addMessage Error "Crash Button Ratio 0 betätigt" >> error ("Crash Button" <> show (1 % 0))
FormMissing -> return ()
_other -> addMessage Warning "KEIN Knopf erkannt"

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@ -115,7 +115,9 @@ mkCCTable = do
]
]
dbtFilter = Map.fromList
[ ("sent" , FilterColumn . E.mkDayFilterTo
[ ("sentTo" , FilterColumn . E.mkDayFilterTo
$ \row -> E.coalesceDefault [queryPrint row E.?. PrintJobCreated, queryMail row E.?. SentMailSentAt] E.now_) -- either one is guaranteed to be non-null, default never used
, ("sentFrom" , FilterColumn . E.mkDayFilterFrom
$ \row -> E.coalesceDefault [queryPrint row E.?. PrintJobCreated, queryMail row E.?. SentMailSentAt] E.now_) -- either one is guaranteed to be non-null, default never used
, ("recipient" , FilterColumn . E.mkContainsFilterWithCommaPlus Just
$ \row -> E.coalesce [queryRecipientPrint row E.?. UserDisplayName, queryRecipientMail row E.?. UserDisplayName])
@ -124,7 +126,8 @@ mkCCTable = do
,E.str2text' $ queryMail row E.?. SentMailHeaders ])
]
dbtFilterUI mPrev = mconcat
[ prismAForm (singletonFilter "date" . maybePrism _PathPiece) mPrev $ aopt (hoistField lift dayField) (fslI MsgPrintJobCreated)
[ prismAForm (singletonFilter "sentTo" . maybePrism _PathPiece) mPrev $ aopt (hoistField lift dayField) (fslI MsgTableFilterSentBefore)
, prismAForm (singletonFilter "sentFrom" . maybePrism _PathPiece) mPrev $ aopt (hoistField lift dayField) (fslI MsgTableFilterSentAfter)
, prismAForm (singletonFilter "recipient" . maybePrism _PathPiece) mPrev $ aopt (hoistField lift textField) (fslI MsgPrintRecipient & setTooltip MsgTableFilterCommaPlus)
, prismAForm (singletonFilter "subject" . maybePrism _PathPiece) mPrev $ aopt (hoistField lift textField) (fslI MsgCommSubject & setTooltip MsgTableFilterCommaPlusShort)
]

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@ -240,15 +240,24 @@ colUserSheets shns = cap (Sortable Nothing caption) $ foldMap userSheetCol shns
colUserQualifications :: forall m c. IsDBTable m c => Day -> Colonnade Sortable UserTableData (DBCell m c)
colUserQualifications cutoff = sortable (Just "qualifications") (i18nCell MsgTableQualifications) $
let qualNamedValidCell (q,qu,qb) = textCell ((q ^. hasQualification . _qualificationShorthand . _CI) <> ": ") <> qualificationValidUntilCell cutoff qb qu
in \(view _userCourseQualifications -> qualis) ->
(cellAttrs <>~ [("class", "list--inline list--comma-separated list--iconless")]) . listCell qualis $ qualNamedValidCell
let qualNamedValidCell (q,qu,qb) = textCell ((q ^. hasQualification . _qualificationShorthand . _CI) <> ": ") <> qualificationValidUntilCell cutoff qb qu
in \(view _userCourseQualifications -> qualis) ->
(cellAttrs <>~ [("class", "list--inline list--comma-separated list--iconless")]) $ listCell qualis qualNamedValidCell
-- colUserQualificationBlocked :: forall m c. IsDBTable m c => Bool -> Day -> Colonnade Sortable UserTableData (DBCell m c)
-- colUserQualificationBlocked isAdmin cutoff = sortable (Just "qualification-block") (i18nCell MsgQualificationValidIndicator & cellTooltip MsgTableQualificationBlockedTooltipSimple) $
-- let qualNamedReasonCell (q,qu,qb) = textCell ((q ^. hasQualification . _qualificationShorthand . _CI) <> ": ") <> qualificationValidReasonCell isAdmin cutoff qb qu
-- in \(view _userCourseQualifications -> qualis) ->
-- (cellAttrs <>~ [("class", "list--inline list--comma-separated list--iconless")]) . listCell qualis $ qualNamedReasonCell
colUserQualificationBlocked :: forall m c. IsDBTable m c => Bool -> Day -> Entity Qualification -> Colonnade Sortable UserTableData (DBCell m c)
colUserQualificationBlocked isAdmin cutoff Entity{entityKey=qid, entityVal=Qualification{qualificationShorthand=qsh}}
= sortable (Just "user-qualification") (i18nCell (MsgQualificationValidReason $ ciOriginal qsh) & cellTooltip MsgTableQualificationBlockedTooltipSimple) $
let qualNamedReasonCell (_q,qu,qb) = qualificationValidReasonCell isAdmin cutoff qb qu
-- in \(view _userCourseQualifications . to (filter ((== qid) . entityKey . fst3)) -> qualis) ->
in \(view _userCourseQualifications -> qualis) ->
(cellAttrs <>~ [("class", "list--inline list--comma-separated list--iconless")]) $ listCell (filter ((== qid) . entityKey . fst3) qualis) qualNamedReasonCell
colUserQualificationBlocked :: forall m c. IsDBTable m c => Bool -> Day -> Colonnade Sortable UserTableData (DBCell m c)
colUserQualificationBlocked isAdmin cutoff = sortable (Just "qualification-block") (i18nCell MsgQualificationValidIndicator & cellTooltip MsgTableQualificationBlockedTooltipSimple) $
let qualNamedReasonCell (q,qu,qb) = textCell ((q ^. hasQualification . _qualificationShorthand . _CI) <> ": ") <> qualificationValidReasonCell' Nothing isAdmin cutoff qb qu
in \(view _userCourseQualifications -> qualis) ->
(cellAttrs <>~ [("class", "list--inline list--comma-separated list--iconless")]) . listCell qualis $ qualNamedReasonCell
data UserTableCsv = UserTableCsv
{ csvUserSurname :: UserSurname

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@ -19,7 +19,7 @@ import qualified Data.Map as Map
-- import qualified Data.Text as Text
-- import Database.Persist.Sql (updateWhereCount)
-- import Database.Esqueleto.Experimental ((:&)(..))
import Database.Esqueleto.Experimental ((:&)(..))
import qualified Database.Esqueleto.Legacy as EL (on) -- only `on` and `from` are different, needed for dbTable using Esqueleto.Legacy
import qualified Database.Esqueleto.Experimental as E
import qualified Database.Esqueleto.Utils as E
@ -41,7 +41,7 @@ import qualified Data.ByteString.Lazy as LB
import Handler.Utils
data MCTableAction = MCActDummy -- just a dummy, since we don't now yet which actions we will be needing
data MCTableAction = MCActResendEmail
deriving (Eq, Ord, Enum, Bounded, Read, Show, Generic)
instance Universe MCTableAction
@ -49,10 +49,29 @@ instance Finite MCTableAction
nullaryPathPiece ''MCTableAction $ camelToPathPiece' 2
embedRenderMessage ''UniWorX ''MCTableAction id
data MCTableActionData = MCActDummyData
newtype MCTableActionData = MCActResendEmailData UserEmail
deriving (Eq, Ord, Read, Show, Generic)
resendMailTo :: (MonoFoldable mono, Element mono ~ SentMailId) => UserEmail -> mono -> Handler ()
resendMailTo recv smids = do
(recvName, mails) <- runDBRead $ (,)
<$> (userDisplayName . entityVal <<$>> getByFilter ([UserEmail ==. recv] ||. [UserDisplayEmail ==. recv]))
<*> E.select (do
(sm :& smc) <- E.from $ E.table @SentMail `E.innerJoin` E.table @SentMailContent `E.on` (\(sm :& smc) -> sm E.^. SentMailContentRef E.==. smc E.^. SentMailContentId)
E.where_ $ sm E.^. SentMailId `E.in_` E.vals smids
return (sm, smc)
)
forM_ mails $ \(Entity {entityVal=SentMail{..}}, Entity{entityVal=SentMailContent{sentMailContentContent=content}}) -> do
let mailParts = getMailContent content
mailTo = []
mailCc = []
mailBcc = [Address{addressName = recvName, addressEmail = ciOriginal recv}]
mailFrom = error "Handler.MailCenter.resenMailTo: mailFrom not replaced by sendSimpleMail" -- :: Address -- will be filled in later by sendSimpleMail
mailHeaders = toHeaders sentMailHeaders -- :: Headers -- keep as it was? Includes To/Cc/Bcc
sendSimpleMail Mail{..}
type MCTableExpr =
( E.SqlExpr (Entity SentMail)
`E.LeftOuterJoin` E.SqlExpr (Maybe (Entity User))
@ -100,16 +119,24 @@ mkMCTable = do
, ("recipient" , sortUserNameBareM queryRecipient)
]
dbtFilter = Map.fromList
[ ("sent" , FilterColumn . E.mkDayFilterTo $ views (to queryMail) (E.^. SentMailSentAt))
[ ("sentTo" , FilterColumn . E.mkDayFilterTo $ views (to queryMail) (E.^. SentMailSentAt))
, ("sentFrom" , FilterColumn . E.mkDayFilterFrom $ views (to queryMail) (E.^. SentMailSentAt))
, ("recipient" , FilterColumn . E.mkContainsFilterWithCommaPlus Just $ views (to queryRecipient) (E.?. UserDisplayName))
, ("subject" , FilterColumn . E.mkContainsFilterWithCommaPlus id $ views (to queryMail) (E.str2text . (E.^. SentMailHeaders)))
-- , ("regex" , FilterColumn . E.mkRegExFilterWith id $ views (to queryMail) (E.str2text . (E.^. SentMailHeaders)))
, ("content" , FilterColumn . E.mkExistsFilter $ \row (criterion :: Text) -> do
body <- E.from $ E.table @SentMailContent
E.where_ $ body E.^. SentMailContentId E.==. queryMail row E.^. SentMailContentRef
E.&&. E.mailContentContains (body E.^. SentMailContentContent) (E.val criterion)
)
]
dbtFilterUI mPrev = mconcat
[ prismAForm (singletonFilter "sent" . maybePrism _PathPiece) mPrev $ aopt (hoistField lift dayField) (fslI MsgPrintJobCreated)
[ prismAForm (singletonFilter "sentTo" . maybePrism _PathPiece) mPrev $ aopt (hoistField lift dayField) (fslI MsgTableFilterSentBefore)
, prismAForm (singletonFilter "sentFrom" . maybePrism _PathPiece) mPrev $ aopt (hoistField lift dayField) (fslI MsgTableFilterSentAfter)
, prismAForm (singletonFilter "recipient" . maybePrism _PathPiece) mPrev $ aopt (hoistField lift textField) (fslI MsgPrintRecipient & setTooltip MsgTableFilterCommaPlus)
, prismAForm (singletonFilter "subject" . maybePrism _PathPiece) mPrev $ aopt (hoistField lift textField) (fslI MsgCommSubject & setTooltip MsgTableFilterCommaPlusShort)
-- , prismAForm (singletonFilter "regex" . maybePrism _PathPiece) mPrev $ aopt (hoistField lift textField) (fslI MsgCommSubject )
, prismAForm (singletonFilter "content" . maybePrism _PathPiece) mPrev $ aopt (hoistField lift textField) (fslI MsgCommContent) -- & setTooltip MsgCommContentSearch)
]
dbtStyle = def { dbsFilterLayout = defaultDBSFilterLayout}
dbtIdent :: Text
@ -121,17 +148,16 @@ mkMCTable = do
{ dbParamsFormMethod = POST
, dbParamsFormAction = Nothing -- Just $ SomeRoute currentRoute
, dbParamsFormAttrs = []
, dbParamsFormSubmit = FormNoSubmit
, dbParamsFormAdditional = \_csrf -> return (FormMissing, mempty)
-- , dbParamsFormSubmit = FormSubmit
-- , dbParamsFormAdditional
-- = let acts :: Map MCTableAction (AForm Handler MCTableActionData)
-- acts = mconcat
-- [ singletonMap MCActDummy $ pure MCActDummyData
-- ]
-- in renderAForm FormStandard
-- $ (, mempty) . First . Just
-- <$> multiActionA acts (fslI MsgTableAction) Nothing
, dbParamsFormSubmit = FormSubmit
, dbParamsFormAdditional
= let acts :: Map MCTableAction (AForm Handler MCTableActionData)
acts = mconcat
[ singletonMap MCActResendEmail $ MCActResendEmailData
<$> areq (emailField & cfStrip & cfCI) (fslI MsgMCActResendEmail & setTooltip MsgMCActResendEmailTooltip) Nothing
]
in renderAForm FormStandard
$ (, mempty) . First . Just
<$> multiActionA acts (fslI MsgTableAction) Nothing
, dbParamsFormEvaluate = liftHandler . runFormPost
, dbParamsFormResult = id
, dbParamsFormIdent = def
@ -150,8 +176,9 @@ getMailCenterR = postMailCenterR
postMailCenterR = do
(mcRes, mcTable) <- runDB mkMCTable
formResult mcRes $ \case
(MCActDummyData, Set.toList -> _smIds) -> do
addMessageI Success MsgBoolIrrelevant
(MCActResendEmailData recv, smIds) -> do
resendMailTo recv smIds
addMessageI (bool Success Error $ null smIds) $ MsgMCActResendEmailInfo (Set.size smIds) (ciOriginal recv)
reloadKeepGetParams MailCenterR
siteLayoutMsg MsgMenuMailCenter $ do
setTitleI MsgMenuMailCenter

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@ -126,15 +126,15 @@ postTUsersR tid ssh csh tutn = do
let nowaday = utctDay now
minDur :: Maybe Int = minimumMaybe $ mapMaybe (view _qualificationValidDuration) qualifications -- no instance Ord CalendarDiffDays
dayExpiry = flip computeNewValidDate nowaday <$> minDur
colChoices = mconcat $ catMaybes
[ pure $ dbSelect (applying _2) id (return . view (hasEntity . _entityKey))
, pure $ colUserNameModalHdr MsgTableCourseMembers ForProfileDataR
, pure colUserEmail
, pure $ colUserMatriclenr isAdmin
, pure $ colUserQualifications nowaday
, pure $ colUserQualificationBlocked isAdmin nowaday
, pure $ colUserExamOccurrencesCheck tid ssh csh
, pure $ colUserExams tid ssh csh
colChoices = mconcat $
[ dbSelect (applying _2) id (return . view (hasEntity . _entityKey))
, colUserNameModalHdr MsgTableCourseMembers ForProfileDataR
, colUserEmail
, colUserMatriclenr isAdmin
] <>
[ colUserQualificationBlocked isAdmin nowaday q | q <- qualifications] <>
[ colUserExamOccurrencesCheck tid ssh csh
, colUserExams tid ssh csh
]
psValidator = def
& defaultSortingByName

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@ -40,6 +40,7 @@ module Mail
, _addressName, _addressEmail
, _mailFrom, _mailTo, _mailCc, _mailBcc, _mailReplyTo, _mailReplyTo', _mailHeaders, _mailHeader, _mailHeader', _mailParts
, _partType, _partEncoding, _partDisposition, _partFilename, _partHeaders, _partContent
, sendSimpleMail
) where
import ClassyPrelude.Yesod hiding (snoc, (.=), getMessageRender, derivePersistFieldJSON)
@ -136,6 +137,9 @@ import Data.Text.Lazy.Encoding (decodeUtf8')
import System.FilePath (takeFileName)
import Network.HTTP.Types.Header (hETag)
import Web.HttpApiData (ToHttpApiData(toHeader))
import Data.Containers.ListUtils
{-# ANN module ("HLint: ignore Parenthesize unary negation" :: String) #-}
newtype AddressEqIgnoreName = AddressEqIgnoreName { getAddress :: Address }
@ -371,6 +375,24 @@ defMailT ls (MailT mailC) = do
mail3
conn
-- | sends an email as it is, no changes except mailFrom
sendSimpleMail :: ( MonadHandler m
, YesodMail (HandlerSite m)
, MonadUnliftIO m
, MonadThrow m
) => Mail -> m ()
sendSimpleMail eml = do
fromAddress <- defaultFromAddress
returnPath <- unpack <$> envelopeFromAddress
let recipients = nubOrd $ map (unpack . addressEmail) $ mailTo eml ++ mailCc eml ++ mailBcc eml
content <- liftIO $ LBS.toStrict <$> renderMail' eml{mailFrom = fromAddress}
mailSmtp $ \conn -> do
liftIO $ SMTP.sendMail
returnPath
recipients
content
conn
data PrioritisedAlternatives m = PrioritisedAlternatives
{ preferredAlternative :: Last (m Part)