gallery/make-pages/Info.hs

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{-# OPTIONS_GHC -Wno-orphans #-}
module Info
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(Info (..),
tagsFor, descFor, imagesFor, linksFor, updatesFor, compareFor, sortFor,
Artist (..), Image (..), Link (..), Update (..),
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GalleryInfo (..), GalleryFilters (..), ArtistFilter (..), NsfwFilter (..),
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IndexInfo (..),
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readArtistFilter, matchArtist, readNsfwFilter, matchNsfw, matchFilters,
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NoThumb (..), getThumb, thumbFile, pageFile,
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-- ** Reexports
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Date (..), Day (..), Text)
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where
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import Date
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import Records
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import Control.Applicative
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import Control.Monad
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import Control.Exception
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import Data.Foldable (find)
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import Data.Hashable (Hashable)
import Data.HashSet (HashSet)
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import qualified Data.HashSet as HashSet
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import qualified Data.Map.Strict as Map
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import Data.Maybe (isJust, isNothing)
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import Data.List (nub, sortBy)
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import Data.Ord (comparing)
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import Data.String (IsString)
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import Data.Text (Text)
import qualified Data.Text as Text
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import Data.YAML (FromYAML (..), (.:), (.:?), (.!=))
import qualified Data.YAML as YAML
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import System.FilePath ((</>), takeBaseName, takeExtension, splitExtension)
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data Info =
Info {
date :: !Date,
-- | extra sort key after date
-- e.g. multiple things on the same day might have a,b,c in @sortEx@ to
-- put them in the right order in the gallery
sortEx :: !Text,
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updates :: ![Update],
-- | if false, don't show updated emblem even if @updates@ is non-empty
showUpdated :: !Bool,
title :: !Text,
artist :: !(Maybe Artist), -- nothing = me, obv
nsfwOnly :: !Bool,
tags :: ![Text],
nsfwTags :: ![Text],
desc :: !(Maybe Text),
nsfwDesc :: !(Maybe Text),
bg :: !(Maybe Text),
images :: ![Image],
thumb' :: !(Maybe FilePath),
links :: ![Link],
extras :: ![FilePath]
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}
deriving (Eq, Show)
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data Artist =
Artist {
name :: !Text,
url :: !(Maybe Text)
}
deriving (Eq, Show)
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data Image =
Image {
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label :: !Text,
path :: !FilePath,
download :: !(Maybe FilePath),
nsfw :: !Bool,
warning :: !(Maybe Text)
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}
deriving (Eq, Show)
data Link =
Link {
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title :: !Text,
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url :: !Text,
nsfw :: !Bool
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}
deriving (Eq, Show)
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data Update =
Update {
date :: !Date,
desc :: !Text,
nsfw :: !Bool
}
deriving (Eq, Ord, Show)
instance HasField "sfw" Image Bool where getField = not . #nsfw
instance HasField "sfw" Link Bool where getField = not . #nsfw
instance HasField "sfw" Update Bool where getField = not . #nsfw
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instance HasField "sfwImages" Info [Image] where
getField = filter #sfw . #images
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instance HasField "nsfwImages" Info [Image] where
getField = filter #nsfw . #images
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instance HasField "allNsfw" Info Bool where getField = null . #sfwImages
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instance HasField "allSfw" Info Bool where getField = null . #nsfwImages
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instance HasField "anySfw" Info Bool where getField = not . #allNsfw
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instance HasField "anyNsfw" Info Bool where getField = not . #allSfw
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instance HasField "sfwLinks" Info [Link] where
getField = filter #sfw . #links
instance HasField "nsfwLinks" Info [Link] where
getField = filter #nsfw . #links
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instance HasField "sfwUpdates" Info [Update] where
getField = filter #sfw . #updates
instance HasField "nsfwUpdates" Info [Update] where
getField = filter #nsfw . #updates
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instance HasField "thumb" Info (Maybe FilePath) where
getField (Info {thumb', images}) = thumb' <|> #path <$> find #sfw images
instance HasField "mine" Info Bool where getField = isNothing . #artist
instance HasField "notMine" Info Bool where getField = isJust . #artist
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instance HasField "latestDate" Info (Bool -> Date) where
getField info@(Info {date}) nsfw =
maximum $ date : map #date (updatesFor nsfw info)
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instance HasField "latestYear" Info (Bool -> Int) where
getField info nsfw = #year $ #latestDate info nsfw
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instance HasField "updated" Info (Bool -> Bool) where
getField (Info {updates, showUpdated}) nsfw = showUpdated && updated
where updated = if nsfw then not $ null updates else any #sfw updates
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descFor :: Bool -> Info -> Maybe Text
descFor nsfw (Info {desc, nsfwDesc}) = desc <> (guard nsfw *> nsfwDesc)
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tagsFor :: Bool -> Info -> [Text]
tagsFor nsfw i = if nsfw then nub (#tags i <> #nsfwTags i) else #tags i
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imagesFor :: Bool -> Info -> [Image]
imagesFor nsfw = if nsfw then #images else #sfwImages
linksFor :: Bool -> Info -> [Link]
linksFor nsfw = if nsfw then #links else #sfwLinks
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updatesFor :: Bool -> Info -> [Update]
updatesFor nsfw = if nsfw then #updates else #sfwUpdates
compareFor :: Bool -> Info -> Info -> Ordering
compareFor nsfw = comparing \i -> (#latestDate i nsfw, #sortEx i, #title i)
sortFor :: Bool -> [Info] -> [Info]
sortFor = sortBy . compareFor
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newtype NoThumb = NoThumb FilePath
deriving stock Eq deriving anyclass Exception
instance Show NoThumb where show (NoThumb dir) = "no thumbnail for " ++ dir
getThumb :: FilePath -> Info -> FilePath
getThumb dir =
maybe (throw $ NoThumb dir) (\t -> dir </> thumbFile t) . #thumb
thumbFile :: FilePath -> FilePath
thumbFile = addSuffix "_small"
pageFile :: FilePath -> FilePath
pageFile f
| takeExtension f == ".gif" = f
| otherwise = addSuffix "_med" f
addSuffix :: String -> FilePath -> FilePath
addSuffix suf path =
let (pre, ext) = splitExtension path in
pre ++ suf ++ ext
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instance FromYAML Info where
parseYAML = YAML.withMap "info" \m ->
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Info <$> m .: "date"
<*> m .:? "sort" .!= ""
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<*> (maybe [] getUL <$> m .:? "updates")
<*> m .:? "show-updated" .!= True
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<*> m .: "title"
<*> m .:? "artist"
<*> m .:? "nsfw-only" .!= False
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<*> m .:? "tags" .!= []
<*> m .:? "nsfw-tags" .!= []
<*> m .:? "desc"
<*> m .:? "nsfw-desc"
<*> m .:? "bg"
<*> (m .: "images" >>= imageList)
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<*> m .:? "thumb"
<*> m .:? "links" .!= []
<*> m .:? "extras" .!= []
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instance FromYAML Artist where
parseYAML y = justName y <|> withUrl y where
justName = YAML.withStr "name" \name -> pure $ Artist {name, url = Nothing}
withUrl = YAML.withMap "full info" \m ->
Artist <$> m .: "name" <*> m .:? "url"
imageList :: YAML.Node YAML.Pos -> YAML.Parser [Image]
imageList y = pure <$> unlabelledImage y <|> parseYAML y
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instance FromYAML Image where
parseYAML y = unlabelledImage y <|> labelled y where
labelled y' = do
Pair label rest <- parseYAML y'
i <- unlabelledImage rest
pure $ i {label}
unlabelledImage :: YAML.Node YAML.Pos -> YAML.Parser Image
unlabelledImage y = asStr y <|> asObj y
where
asStr = YAML.withStr "path" \(Text.unpack -> path) ->
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pure $ Image {label = pathToLabel path, path, download = Nothing,
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nsfw = False, warning = Nothing}
asObj = YAML.withMap "image info" \m -> do
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path <- m .: "path"
download <- m .:? "download"
nsfw <- m .:? "nsfw" .!= False
warning <- m .:? "warning"
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pure $ Image {label = pathToLabel path, path, download, nsfw, warning}
pathToLabel = Text.pack . dashToSpace . takeBaseName
dashToSpace = map \case '-' -> ' '; c -> c
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instance FromYAML Link where
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parseYAML y = do
Pair title rest <- parseYAML y
asStr title rest <|> asObj title rest
where
asStr title = YAML.withStr "url" \url ->
pure $ Link {title, url, nsfw = False}
asObj title = YAML.withMap "link info" \m -> do
url <- m .: "url"
nsfw <- m .:? "nsfw" .!= False
pure $ Link {title, url, nsfw}
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newtype UpdateList = UL {getUL :: [Update]}
instance FromYAML UpdateList where
parseYAML y = do
pairs <- YAML.withMap "updates" (pure . Map.toList) y
UL <$> traverse asEither pairs
where
asEither (date', rest) = do
date <- parseYAML date'
asDesc date rest <|> asObj date rest
asDesc date = YAML.withStr "desc" \desc ->
pure $ Update {date, desc, nsfw = False}
asObj date = YAML.withMap "update info" \m -> do
desc <- m .: "desc"
nsfw <- m .:? "nsfw" .!= False
pure $ Update {date, desc, nsfw}
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data GalleryInfo =
GalleryInfo {
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title :: !Text,
desc :: !Text,
prefix :: !FilePath,
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filters :: !GalleryFilters,
hidden :: !(HashSet Text) -- ^ tags to initially hide
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}
deriving (Eq, Show)
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instance HasField "nsfw" GalleryInfo Bool where
getField g = #nsfw (#filters g) /= NoNsfw
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data GalleryFilters =
GalleryFilters {
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nsfw :: !NsfwFilter,
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artist :: !ArtistFilter,
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require, exclude :: !(HashSet Text)
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}
deriving (Eq, Show)
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data NsfwFilter = NoNsfw | OnlyNsfw | AllN deriving (Eq, Show)
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readNsfwFilter :: (IsString str, Eq str, Alternative f) => str -> f NsfwFilter
readNsfwFilter "no" = pure NoNsfw
readNsfwFilter "only" = pure OnlyNsfw
readNsfwFilter "all" = pure AllN
readNsfwFilter _ = empty
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matchNsfw :: NsfwFilter -> Info -> Bool
matchNsfw NoNsfw i = #anySfw i && not (#nsfwOnly i)
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matchNsfw OnlyNsfw i = #anyNsfw i
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matchNsfw AllN _ = True
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instance FromYAML NsfwFilter where
parseYAML = YAML.withStr "nsfw filter" readNsfwFilter
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data ArtistFilter = Me | NotMe | AllA deriving (Eq, Show)
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readArtistFilter :: (IsString str, Eq str, Alternative f)
=> str -> f ArtistFilter
readArtistFilter "me" = pure Me
readArtistFilter "not-me" = pure NotMe
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readArtistFilter "all" = pure AllA
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readArtistFilter _ = empty
matchArtist :: ArtistFilter -> Info -> Bool
matchArtist Me = #mine
matchArtist NotMe = #notMine
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matchArtist AllA = const True
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noFilters :: GalleryFilters
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noFilters =
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GalleryFilters {nsfw = AllN, artist = AllA, require = [], exclude = []}
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matchFilters :: GalleryFilters -> Info -> Bool
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matchFilters (GalleryFilters {nsfw, artist, require, exclude}) i =
matchNsfw nsfw i && matchArtist artist i &&
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all (\t -> HashSet.member t tags) require &&
all (\t -> not $ HashSet.member t tags) exclude
where tags = HashSet.fromList $ #tags i
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instance FromYAML GalleryInfo where
parseYAML = YAML.withMap "gallery info" \m ->
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GalleryInfo <$> m .: "title"
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<*> m .: "desc"
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<*> m .: "prefix"
<*> m .:? "filters" .!= noFilters
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<*> m .:? "hidden" .!= mempty
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instance FromYAML GalleryFilters where
parseYAML = YAML.withMap "gallery filters" \m ->
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GalleryFilters <$> m .:? "nsfw" .!= AllN
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<*> m .:? "artist" .!= AllA
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<*> m .:? "require" .!= []
<*> m .:? "exclude" .!= []
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instance FromYAML ArtistFilter where
parseYAML = YAML.withStr "artist filter" readArtistFilter
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data IndexInfo =
IndexInfo {
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title :: !Text,
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desc :: !Text,
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galleries :: ![GalleryInfo],
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links :: ![Link],
footer :: !(Maybe Text)
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}
deriving Show
instance FromYAML IndexInfo where
parseYAML = YAML.withMap "index info" \m ->
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IndexInfo <$> m .: "title"
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<*> m .: "desc"
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<*> m .:? "galleries" .!= []
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<*> m .:? "links" .!= []
<*> m .:? "footer"
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data Pair a b = Pair !a !b
instance (FromYAML a, FromYAML b) => FromYAML (Pair a b) where
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parseYAML = YAML.withMap "single-pair map" \m ->
case Map.toList m of
[(a, b)] -> Pair <$> parseYAML a <*> parseYAML b
_ -> fail "expected exactly one pair"
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instance {-# OVERLAPPING #-} FromYAML String where
parseYAML y = Text.unpack <$> parseYAML y
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instance (FromYAML a, Eq a, Hashable a) => FromYAML (HashSet a) where
parseYAML y = HashSet.fromList <$> parseYAML y