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-- ldgallery - A static generator which turns a collection of tagged
-- pictures into a searchable web gallery.
--
-- Copyright (C) 2019-2020 Pacien TRAN-GIRARD
--
-- This program is free software: you can redistribute it and/or modify
-- it under the terms of the GNU Affero General Public License as
-- published by the Free Software Foundation, either version 3 of the
-- License, or (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU Affero General Public License for more details.
--
-- You should have received a copy of the GNU Affero General Public License
-- along with this program. If not, see <https://www.gnu.org/licenses/>.
module Compiler
( compileGallery
, writeJSON
) where
import GHC.Generics (Generic)
import Control.Monad (liftM2, when)
import Data.List (any)
import Data.Maybe (fromMaybe)
import System.FilePath ((</>))
import qualified System.FilePath.Glob as Glob
import System.Directory (canonicalizePath)
import Data.Aeson (ToJSON)
import qualified Data.Aeson as JSON
import Config
import Input (InputTree, readInputTree, filterInputTree, sidecar, tags)
import Resource (GalleryItem, buildGalleryTree, galleryCleanupResourceDir)
import Files
( FileName
, FSNode(..)
, readDirectory
, isHidden
, nodeName
, filterDir
, ensureParentDir )
import Processors
( itemFileProcessor, thumbnailFileProcessor
, skipCached, withCached )
defaultGalleryConf :: String
defaultGalleryConf = "gallery.yaml"
defaultIndexFile :: String
defaultIndexFile = "index.json"
itemsDir :: String
itemsDir = "items"
thumbnailsDir :: String
thumbnailsDir = "thumbnails"
data GalleryIndex = GalleryIndex
{ properties :: ViewerConfig
, tree :: GalleryItem
} deriving (Generic, Show, ToJSON)
writeJSON :: ToJSON a => FileName -> a -> IO ()
writeJSON outputPath object =
do
putStrLn $ "Generating:\t" ++ outputPath
ensureParentDir JSON.encodeFile outputPath object
(&&&) :: (a -> Bool) -> (a -> Bool) -> a -> Bool
(&&&) = liftM2 (&&)
(|||) :: (a -> Bool) -> (a -> Bool) -> a -> Bool
(|||) = liftM2 (||)
anyPattern :: [String] -> String -> Bool
anyPattern patterns string = any (flip Glob.match string) (map Glob.compile patterns)
galleryDirFilter :: GalleryConfig -> [FilePath] -> FSNode -> Bool
galleryDirFilter config excludedCanonicalDirs =
(not . isHidden)
&&& (not . isExcludedDir)
&&& ((matchesDir $ anyPattern $ includedDirectories config) |||
(matchesFile $ anyPattern $ includedFiles config))
&&& (not . ((matchesDir $ anyPattern $ excludedDirectories config) |||
(matchesFile $ anyPattern $ excludedFiles config)))
where
matchesDir :: (FileName -> Bool) -> FSNode -> Bool
matchesDir cond dir@Dir{} = maybe False cond $ nodeName dir
matchesDir _ File{} = False
matchesFile :: (FileName -> Bool) -> FSNode -> Bool
matchesFile cond file@File{} = maybe False cond $ nodeName file
matchesFile _ Dir{} = False
isExcludedDir :: FSNode -> Bool
isExcludedDir Dir{canonicalPath} = any (canonicalPath ==) excludedCanonicalDirs
isExcludedDir File{} = False
inputTreeFilter :: GalleryConfig -> InputTree -> Bool
inputTreeFilter GalleryConfig{includedTags, excludedTags} =
(hasTagMatching $ anyPattern includedTags)
&&& (not . (hasTagMatching $ anyPattern excludedTags))
where
hasTagMatching :: (String -> Bool) -> InputTree -> Bool
hasTagMatching cond = (any cond) . (fromMaybe [""] . tags) . sidecar
compileGallery :: FilePath -> FilePath -> FilePath -> FilePath -> [FilePath] -> Bool -> Bool -> IO ()
compileGallery configPath inputDirPath outputDirPath outputIndexPath excludedDirs rebuildAll cleanOutput =
do
config <- readConfig $ inputGalleryConf configPath
inputDir <- readDirectory inputDirPath
excludedCanonicalDirs <- mapM canonicalizePath excludedDirs
let sourceFilter = galleryDirFilter config excludedCanonicalDirs
let sourceTree = filterDir sourceFilter inputDir
inputTree <- readInputTree sourceTree
let curatedInputTree = filterInputTree (inputTreeFilter config) inputTree
let cache = if rebuildAll then skipCached else withCached
let itemProc = itemProcessor config cache
let thumbnailProc = thumbnailProcessor config cache
let galleryBuilder = buildGalleryTree itemProc thumbnailProc (tagsFromDirectories config)
resources <- galleryBuilder curatedInputTree
when cleanOutput $ galleryCleanupResourceDir resources outputDirPath
writeJSON (outputGalleryIndex outputIndexPath) $ GalleryIndex (viewerConfig config) resources
where
inputGalleryConf :: FilePath -> FilePath
inputGalleryConf "" = inputDirPath </> defaultGalleryConf
inputGalleryConf file = file
outputGalleryIndex :: FilePath -> FilePath
outputGalleryIndex "" = outputDirPath </> defaultIndexFile
outputGalleryIndex file = file
itemProcessor config cache =
itemFileProcessor
(pictureMaxResolution config) cache
inputDirPath outputDirPath itemsDir
thumbnailProcessor config cache =
thumbnailFileProcessor
(thumbnailMaxResolution config) cache
inputDirPath outputDirPath thumbnailsDir
|