{-# LANGUAGE DeriveAnyClass #-}
{-# LANGUAGE DuplicateRecordFields #-}
{-# LANGUAGE QuasiQuotes #-}
module WhatcdResolver where
import Control.Monad.Logger qualified as Logger
import Control.Monad.Logger.CallStack
import Control.Monad.Reader
import Data.Aeson qualified as Json
import Data.Aeson.BetterErrors qualified as Json
import Data.Aeson.KeyMap qualified as KeyMap
import Data.Error.Tree
import Data.List.NonEmpty qualified as NonEmpty
import Data.Map.Strict qualified as Map
import Data.Pool (Pool)
import Data.Pool qualified as Pool
import Data.Text qualified as Text
import Database.PostgreSQL.Simple (Only (..))
import Database.PostgreSQL.Simple qualified as Postgres
import Database.PostgreSQL.Simple.SqlQQ (sql)
import Database.PostgreSQL.Simple.Types (PGArray (PGArray))
import Database.PostgreSQL.Simple.Types qualified as Postgres
import Database.Postgres.Temp qualified as TmpPg
import FieldParser qualified as Field
import GHC.Records (HasField (..))
import IHP.HSX.QQ (hsx)
import Json qualified
import Json.Enc (Enc)
import Json.Enc qualified as Enc
import Label
import Network.HTTP.Conduit qualified as Http
import Network.HTTP.Simple qualified as Http
import Network.HTTP.Types
import Network.HTTP.Types qualified as Http
import Network.Wai qualified as Wai
import Network.Wai.Handler.Warp qualified as Warp
import PossehlAnalyticsPrelude
import Postgres.Decoder qualified as Dec
import Postgres.MonadPostgres
import Pretty
import RunCommand
import System.Directory qualified as Dir
import System.Directory qualified as Xdg
import System.FilePath (())
import System.IO qualified as IO
import Text.Blaze.Html (Html, (!))
import Text.Blaze.Html.Renderer.Utf8 qualified as Html
import Text.Blaze.Html5 qualified as Html
import Text.Blaze.Html5.Attributes qualified as Attr
import UnliftIO
htmlUi :: App ()
htmlUi = do
withRunInIO $ \runInIO -> Warp.run 8080 $ \req resp -> do
let h = resp . Wai.responseLBS Http.ok200 []
case req & Wai.pathInfo of
[] -> h =<< runInIO mainHtml
["snips", "song"] -> h snipsSong
_ -> h =<< runInIO mainHtml
where
tableData =
( [ "Group ID",
"Torrent ID",
"Artist",
"Name",
"Weight",
"Torrent"
],
\t ->
[ Enc.int t.groupId,
Enc.int t.torrentId,
Enc.text t.torrentGroupJson.artist,
Enc.text t.torrentGroupJson.groupName,
Enc.int t.seedingWeight,
Enc.value t.torrentJson
]
)
mkTable :: ([Text], t -> [Enc]) -> [t] -> Html
mkTable f ts =
do
let headers = Html.thead (fst f <&> Html.toHtml @Text <&> Html.th & mconcat)
let keys = fst f <&> Text.toLower <&> Text.replace " " "_"
let json = Enc.list (\t -> Enc.object (zip keys (t & snd f))) ts
let tableDataScript =
Html.script
! Attr.type_ "application/json"
! Attr.id "table-data"
$ (json & Enc.encToBytesUtf8 & bytesToTextUtf8Unsafe & Html.text)
[hsx|
{tableDataScript}
{headers}
|]
mainHtml = runTransaction $ do
bestTorrents <- getBestTorrents
pure $
Html.renderHtml $
Html.docTypeHtml
[hsx|
{mkTable tableData bestTorrents}
|]
snipsSong = todo
data TransmissionRequest = TransmissionRequest
{ method :: Text,
arguments :: Map Text Enc,
tag :: Maybe Int
}
deriving stock (Show)
testTransmission req = runAppWith $ doTransmissionRequest (T2 (label @"host" "localhost") (label @"port" "9091")) req >>= liftIO . printPretty
requestListAllTorrents :: TransmissionRequest
requestListAllTorrents =
TransmissionRequest
{ method = "torrent-get",
arguments =
Map.fromList
[ ("fields", Enc.list Enc.text ["id", "name", "files", "fileStats"])
],
tag = Nothing
}
data TransmissionResponse = TransmissionResponse
{ result :: TransmissionResponseStatus,
arguments :: Map Text Json.Value,
tag :: Maybe Int
}
deriving stock (Show)
data TransmissionResponseStatus
= TransmissionResponseSuccess
| TransmissionResponseFailure Text
deriving stock (Show)
doTransmissionRequest ::
( MonadIO m,
MonadTransmission m,
HasField "host" t1 Text,
HasField "port" t1 Text,
MonadThrow m
) =>
t1 ->
TransmissionRequest ->
m TransmissionResponse
doTransmissionRequest dat req = do
sessionId <- getTransmissionId
let httpReq =
[fmt|http://{dat.host}:{dat.port}/transmission/rpc|]
& Http.setRequestMethod "POST"
& Http.setRequestBodyLBS
( Enc.encToBytesUtf8Lazy $
Enc.object
( [ ("method", req.method & Enc.text),
("arguments", Enc.map id req.arguments)
]
<> (req.tag & maybe [] (\t -> [("tag", t & Enc.int)]))
)
)
& (sessionId & maybe id (Http.setRequestHeader "X-Transmission-Session-Id" . (: [])))
resp <- Http.httpBS httpReq
-- Implement the CSRF protection thingy
case resp & Http.getResponseStatus & (.statusCode) of
409 -> do
tid <-
resp
& Http.getResponseHeader "X-Transmission-Session-Id"
& nonEmpty
& annotate [fmt|Missing "X-Transmission-Session-Id" header in 409 response: {showPretty resp}|]
& unwrapIOError
& liftIO
<&> NonEmpty.head
setTransmissionId tid
doTransmissionRequest dat req
200 ->
resp
& Http.getResponseBody
& Json.parseStrict
( Json.mapError singleError $ do
result <-
Json.key "result" Json.asText <&> \case
"success" -> TransmissionResponseSuccess
err -> TransmissionResponseFailure err
arguments <-
Json.keyMay "arguments" Json.asObject
<&> fromMaybe mempty
<&> KeyMap.toMapText
tag <-
Json.keyMay
"tag"
(Field.jsonParser (Field.jsonNumber >>> Field.boundedScientificIntegral "tag too long"))
pure TransmissionResponse {..}
)
& first (Json.parseErrorTree "Cannot parse transmission RPC response")
& \case
Right a -> pure a
Left err -> appThrowTree err
_ -> liftIO $ unwrapIOError $ Left [fmt|Non-200 response: {showPretty resp}|]
redactedSearch ::
(MonadLogger m, MonadIO m, MonadThrow m) =>
[(ByteString, ByteString)] ->
Json.Parse ErrorTree a ->
m a
redactedSearch advanced =
redactedApiRequest
( T2
(label @"action" "browse")
(label @"actionArgs" ((advanced <&> second Just)))
)
test :: Bool -> IO (Either TmpPg.StartError ())
test doSearch =
runAppWith $ do
_ <- runTransaction migrate
when doSearch $ do
transaction <- bla
_ <- runTransaction transaction
pure ()
htmlUi
-- fix
-- ( \io -> do
-- logInfo "delay"
-- liftIO $ threadDelay 10_000_000
-- io
-- )
bla :: (MonadThrow m, MonadIO m, MonadLogger m, MonadPostgres m) => m (Transaction m ())
bla = do
t1 <-
realbla
[ ("searchstr", "cherish"),
("artistname", "kirinji"),
-- ("year", "1982"),
-- ("format", "MP3"),
-- ("releasetype", "album"),
("order_by", "year")
]
t2 <-
realbla
[ ("searchstr", "thriller"),
("artistname", "michael jackson"),
-- ("year", "1982"),
-- ("format", "MP3"),
-- ("releasetype", "album"),
("order_by", "year")
]
pure (t1 >> t2)
where
realbla x =
redactedSearch
x
( do
status <- Json.key "status" Json.asText
when (status /= "success") $ do
Json.throwCustomError [fmt|Status was not "success", but {status}|]
Json.key "response" $ do
Json.key "results" $
sequence_
<$> ( Json.eachInArray $ do
groupId <- Json.key "groupId" (Json.asIntegral @_ @Int)
groupName <- Json.key "groupName" Json.asText
fullJsonResult <-
Json.asObject
-- remove torrents cause they are inserted separately below
<&> KeyMap.filterWithKey (\k _ -> k /= "torrents")
<&> Json.Object
let insertTourGroup = do
_ <-
execute
[fmt|
DELETE FROM redacted.torrent_groups
WHERE group_id = ?::integer
|]
(Only groupId)
executeManyReturningWith
[fmt|
INSERT INTO redacted.torrent_groups (
group_id, group_name, full_json_result
) VALUES
( ?, ? , ? )
RETURNING (id)
|]
[ ( groupId,
groupName,
fullJsonResult
)
]
(label @"tourGroupIdPg" <$> Dec.fromField @Int)
>>= ensureSingleRow
insertTorrents <- Json.key "torrents" $ do
torrents <- Json.eachInArray $ do
torrentId <- Json.keyLabel @"torrentId" "torrentId" (Json.asIntegral @_ @Int)
fullJsonResultT <- label @"fullJsonResult" <$> Json.asValue
pure $ T2 torrentId fullJsonResultT
pure $ \dat -> do
_ <-
execute
[sql|
DELETE FROM redacted.torrents_json
WHERE torrent_id = ANY (?::integer[])
|]
(Only $ torrents & unzipT2 & (.torrentId) & PGArray)
execute
[sql|
INSERT INTO redacted.torrents_json
(torrent_id, torrent_group, full_json_result)
SELECT inputs.torrent_id, static.torrent_group, inputs.full_json_result FROM
(SELECT * FROM UNNEST(?::integer[], ?::jsonb[])) AS inputs(torrent_id, full_json_result)
CROSS JOIN (VALUES(?::integer)) as static(torrent_group)
|]
( torrents
& unzipT2
& \t ->
( t.torrentId & PGArray,
t.fullJsonResult & PGArray,
dat.tourGroupIdPg
)
)
pure ()
pure (insertTourGroup >>= insertTorrents)
)
)
migrate :: MonadPostgres m => Transaction m (Label "numberOfRowsAffected" Natural)
migrate = do
execute_
[sql|
CREATE SCHEMA IF NOT EXISTS redacted;
CREATE TABLE IF NOT EXISTS redacted.torrent_groups (
id SERIAL PRIMARY KEY,
group_id INTEGER,
group_name TEXT,
full_json_result JSONB,
UNIQUE(group_id)
);
CREATE TABLE IF NOT EXISTS redacted.torrents_json (
id SERIAL PRIMARY KEY,
torrent_id INTEGER,
torrent_group SERIAL NOT NULL REFERENCES redacted.torrent_groups(id) ON DELETE CASCADE,
full_json_result JSONB,
UNIQUE(torrent_id)
);
-- inflect out values of the full json
CREATE OR REPLACE VIEW redacted.torrents AS
SELECT
t.id,
t.torrent_id,
t.torrent_group,
-- the seeding weight is used to find the best torrent in a group.
( (full_json_result->'seeders')::integer*3
+ (full_json_result->'snatches')::integer)
AS seeding_weight,
t.full_json_result
FROM redacted.torrents_json t;
CREATE INDEX IF NOT EXISTS torrents_json_seeding ON redacted.torrents_json(((full_json_result->'seeding')::integer));
CREATE INDEX IF NOT EXISTS torrents_json_snatches ON redacted.torrents_json(((full_json_result->'snatches')::integer));
|]
data TorrentData = TorrentData
{ groupId :: Int,
torrentId :: Int,
seedingWeight :: Int,
torrentJson :: Json.Value,
torrentGroupJson :: T2 "artist" Text "groupName" Text
}
-- | Find the best torrent for each torrent group (based on the seeding_weight)
getBestTorrents :: MonadPostgres m => Transaction m [TorrentData]
getBestTorrents = do
queryWith
[sql|
SELECT * FROM (
SELECT DISTINCT ON (group_id)
tg.group_id,
t.torrent_id,
seeding_weight,
t.full_json_result AS torrent_json,
tg.full_json_result AS torrent_group_json
FROM redacted.torrents t
JOIN redacted.torrent_groups tg ON tg.id = t.torrent_group
ORDER BY group_id, seeding_weight DESC
) as _
ORDER BY seeding_weight DESC
|]
()
( do
groupId <- Dec.fromField @Int
torrentId <- Dec.fromField @Int
seedingWeight <- Dec.fromField @Int
torrentJson <- Dec.json Json.asValue
torrentGroupJson <-
( Dec.json $ do
artist <- Json.keyLabel @"artist" "artist" Json.asText
groupName <- Json.keyLabel @"groupName" "groupName" Json.asText
pure $ T2 artist groupName
)
pure $ TorrentData {..}
)
hush :: Either a1 a2 -> Maybe a2
hush (Left _) = Nothing
hush (Right a) = Just a
unzipT2 :: forall l1 t1 l2 t2. [T2 l1 t1 l2 t2] -> T2 l1 [t1] l2 [t2]
unzipT2 xs = xs <&> toTup & unzip & fromTup
where
toTup :: forall a b. T2 a t1 b t2 -> (t1, t2)
toTup (T2 a b) = (getField @a a, getField @b b)
fromTup :: (a, b) -> T2 l1 a l2 b
fromTup (t1, t2) = T2 (label @l1 t1) (label @l2 t2)
unzipT3 :: forall l1 t1 l2 t2 l3 t3. [T3 l1 t1 l2 t2 l3 t3] -> T3 l1 [t1] l2 [t2] l3 [t3]
unzipT3 xs = xs <&> toTup & unzip3 & fromTup
where
toTup :: forall a b c. T3 a t1 b t2 c t3 -> (t1, t2, t3)
toTup (T3 a b c) = (getField @a a, getField @b b, getField @c c)
fromTup :: (a, b, c) -> T3 l1 a l2 b l3 c
fromTup (t1, t2, t3) = T3 (label @l1 t1) (label @l2 t2) (label @l3 t3)
redactedApiRequest ::
( MonadThrow m,
MonadIO m,
MonadLogger m,
HasField "action" p ByteString,
HasField "actionArgs" p [(ByteString, Maybe ByteString)]
) =>
p ->
Json.Parse ErrorTree a ->
m a
redactedApiRequest dat parse = do
authKey <- runCommandExpect0 "pass" ["internet/redacted/api-keys/whatcd-resolver"]
let req =
[fmt|https://redacted.ch/ajax.php|]
& Http.setRequestMethod "GET"
& Http.setQueryString (("action", Just dat.action) : dat.actionArgs)
& Http.setRequestHeader "Authorization" [authKey]
Http.httpBS req
>>= assertM
( \resp -> case resp & Http.responseStatus & (.statusCode) of
200 -> Right $ resp & Http.responseBody
_ -> Left [fmt|Redacted returned an non-200 error code: {resp & showPretty}|]
)
>>= ( Json.parseStrict parse
>>> first (Json.parseErrorTree "could not parse redacted response")
>>> assertM id
)
assertM :: MonadThrow f => (t -> Either ErrorTree a) -> t -> f a
assertM f v = case f v of
Right a -> pure a
Left err -> appThrowTree err
runAppWith :: AppT IO a -> IO (Either TmpPg.StartError a)
runAppWith appT = withDb $ \db -> do
tools <- initMonadTools (label @"envvar" "WHATCD_RESOLVER_TOOLS")
let config = label @"logDatabaseQueries" LogDatabaseQueries
pgConnPool <-
Pool.createPool
(Postgres.connectPostgreSQL (db & TmpPg.toConnectionString))
Postgres.close
{- number of stripes -} 5
{- unusedResourceOpenTime -} 10
{- max resources per stripe -} 10
transmissionSessionId <- newEmptyMVar
let newAppT = do
logInfo [fmt|Running with config: {showPretty config}|]
logInfo [fmt|Connected to database at {db & TmpPg.toDataDirectory} on socket {db & TmpPg.toConnectionString}|]
appT
runReaderT newAppT.unAppT Context {..}
withDb :: (TmpPg.DB -> IO a) -> IO (Either TmpPg.StartError a)
withDb act = do
dataDir <- Xdg.getXdgDirectory Xdg.XdgData "whatcd-resolver"
let databaseDir = dataDir "database"
let socketDir = dataDir "database-socket"
Dir.createDirectoryIfMissing True socketDir
initDbConfig <-
Dir.doesDirectoryExist databaseDir >>= \case
True -> pure TmpPg.Zlich
False -> do
putStderrLn [fmt|Database does not exist yet, creating in "{databaseDir}"|]
Dir.createDirectoryIfMissing True databaseDir
pure TmpPg.DontCare
let cfg =
mempty
{ TmpPg.dataDirectory = TmpPg.Permanent (databaseDir),
TmpPg.socketDirectory = TmpPg.Permanent socketDir,
TmpPg.port = pure $ Just 5432,
TmpPg.initDbConfig
}
TmpPg.withConfig cfg $ \db -> do
-- print [fmt|data dir: {db & TmpPg.toDataDirectory}|]
-- print [fmt|conn string: {db & TmpPg.toConnectionString}|]
act db
data Context = Context
{ config :: Label "logDatabaseQueries" DatabaseLogging,
tools :: Tools,
pgConnPool :: Pool Postgres.Connection,
transmissionSessionId :: MVar ByteString
}
newtype AppT m a = AppT {unAppT :: ReaderT Context m a}
deriving newtype (Functor, Applicative, Monad, MonadIO, MonadUnliftIO, MonadThrow)
type App a = AppT IO a
data AppException = AppException Text
deriving stock (Show)
deriving anyclass (Exception)
appThrowTree :: MonadThrow m => ErrorTree -> m a
appThrowTree exc = throwM $ AppException $ prettyErrorTree exc
instance MonadIO m => MonadLogger (AppT m) where
monadLoggerLog loc src lvl msg = liftIO $ Logger.defaultOutput IO.stderr loc src lvl (Logger.toLogStr msg)
instance Monad m => MonadTools (AppT m) where
getTools = AppT $ asks (.tools)
class MonadTransmission m where
getTransmissionId :: m (Maybe ByteString)
setTransmissionId :: ByteString -> m ()
instance (MonadIO m) => MonadTransmission (AppT m) where
getTransmissionId = AppT (asks (.transmissionSessionId)) >>= tryTakeMVar
setTransmissionId t = do
var <- AppT $ asks (.transmissionSessionId)
putMVar var t
instance (MonadThrow m, MonadUnliftIO m) => MonadPostgres (AppT m) where
execute qry params = do
conf <- lift $ AppT (asks (.config))
logQueryIfEnabled conf qry (HasSingleParam params)
pgExecute qry params
execute_ qry = do
conf <- lift $ AppT (asks (.config))
logQueryIfEnabled @(Only Text) conf qry HasNoParams
pgExecute_ qry
executeMany qry params = do
conf <- lift $ AppT (asks (.config))
logQueryIfEnabled conf qry (HasMultiParams params)
pgExecuteMany qry params
executeManyReturningWith qry params dec = do
conf <- lift $ AppT (asks (.config))
logQueryIfEnabled conf qry (HasMultiParams params)
pgExecuteManyReturningWith qry params dec
queryWith qry params decoder = do
conf <- lift $ AppT (asks (.config))
logQueryIfEnabled conf qry (HasSingleParam params)
pgQueryWith qry params decoder
-- TODO: log these queries as well with `logQueryIfEnabled`, but test out whether it works with query_ and foldRows first.
queryWith_ = pgQueryWith_
foldRows = pgFold
runTransaction = runPGTransaction
runPGTransaction :: MonadUnliftIO m => Transaction (AppT m) a -> AppT m a
runPGTransaction (Transaction transaction) = do
pool <- AppT ask <&> (.pgConnPool)
withRunInIO $ \unliftIO ->
withPGTransaction pool $ \conn -> do
unliftIO $ runReaderT transaction conn
-- | Perform a Postgres action within a transaction
withPGTransaction ::
-- | Postgres connection pool to be used for the action
Pool Postgres.Connection ->
-- | DB-action to be performed
(Postgres.Connection -> IO a) ->
-- | Result of the DB-action
IO a
withPGTransaction connPool f =
Pool.withResource
connPool
(\conn -> Postgres.withTransaction conn (f conn))
data HasQueryParams param
= HasNoParams
| HasSingleParam param
| HasMultiParams [param]
-- | Log the postgres query depending on the setting of @config.debugInfo.logDatabaseQueries@.
logQueryIfEnabled ::
forall params config m.
( Postgres.ToRow params,
MonadUnliftIO m,
MonadLogger m,
MonadTools m,
HasField "logDatabaseQueries" config DatabaseLogging
) =>
config ->
Postgres.Query ->
HasQueryParams params ->
Transaction m ()
logQueryIfEnabled config qry params = do
-- In case we have query logging enabled, we want to do that
let formattedQuery = case params of
HasNoParams -> pgFormatQueryNoParams' qry
HasSingleParam p -> pgFormatQuery' qry p
HasMultiParams ps -> pgFormatQueryMany' qry ps
let doLog errs =
errs
& nestedMultiError "Postgres query"
& prettyErrorTree
& logDebug
& lift
let addQuery = do
formattedQuery
<&> newError
<&> singleError
let addExplain = do
q <- formattedQuery
pgQueryWith_
( "EXPLAIN "
<> (
-- TODO: this is not nice, but the only way to get the `executeMany` form to work with this
-- because we need the query with all elements already interpolated.
Postgres.Query (q & textToBytesUtf8)
)
)
(Dec.fromField @Text)
<&> Text.intercalate "\n"
<&> newError
<&> singleError
case config.logDatabaseQueries of
DontLogDatabaseQueries -> pure ()
LogDatabaseQueries -> do
aq <- addQuery
doLog (aq :| [])
LogDatabaseQueriesAndExplain -> do
aq <- addQuery
-- XXX: stuff like `CREATE SCHEMA` cannot be EXPLAINed, so we should catch exceptions here
-- and just ignore anything that errors (if it errors because of a problem with the query, it would have been caught by the query itself.
ex <- addExplain
doLog (nestedError "Query" aq :| [nestedError "Explain" ex])
data DatabaseLogging
= DontLogDatabaseQueries
| LogDatabaseQueries
| LogDatabaseQueriesAndExplain
deriving stock (Show)