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-- ldgallery - A static generator which turns a collection of tagged
-- pictures into a searchable web gallery.
--
-- Copyright (C) 2019 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/>.
{-# LANGUAGE
DuplicateRecordFields
, DeriveGeneric
, DeriveAnyClass
#-}
module Compiler
( compileGallery
) where
import Control.Monad (liftM2)
import Data.Function ((&))
import Data.List (any)
import System.FilePath ((</>))
import Data.Aeson (ToJSON)
import qualified Data.Aeson as JSON
import Config
import Input (decodeYamlFile, readInputTree)
import Resource (buildGalleryTree, galleryCleanupResourceDir)
import Files
( FileName
, FSNode(..)
, readDirectory
, isHidden
, nodeName
, filterDir
, ensureParentDir
, isOutdated )
import Processors
( dirFileProcessor, itemFileProcessor, thumbnailFileProcessor
, skipCached, withCached )
writeJSON :: ToJSON a => FileName -> a -> IO ()
writeJSON outputPath object =
do
putStrLn $ "Generating:\t" ++ outputPath
ensureParentDir JSON.encodeFile outputPath object
compileGallery :: FilePath -> FilePath -> Bool -> IO ()
compileGallery inputDirPath outputDirPath rebuildAll =
do
fullConfig <- readConfig inputGalleryConf
let config = compiler fullConfig
inputDir <- readDirectory inputDirPath
let sourceTree = filterDir galleryDirFilter inputDir
inputTree <- readInputTree sourceTree
invalidateCache <- isOutdated False inputGalleryConf outputIndex
let cache = if invalidateCache || rebuildAll then skipCached else withCached
let itemProc = itemProcessor (pictureMaxResolution config) cache
let thumbnailProc = thumbnailProcessor (thumbnailResolution config) cache
let galleryBuilder = buildGalleryTree dirProcessor itemProc thumbnailProc
resources <- galleryBuilder (galleryName config) inputTree
galleryCleanupResourceDir resources outputDirPath
writeJSON outputIndex resources
writeJSON outputViewerConf $ viewer fullConfig
where
galleryConf = "gallery.yaml"
indexFile = "index.json"
viewerConfFile = "viewer.json"
itemsDir = "items"
thumbnailsDir = "thumbnails"
inputGalleryConf = inputDirPath </> galleryConf
outputIndex = outputDirPath </> indexFile
outputViewerConf = outputDirPath </> viewerConfFile
(&&&) = liftM2 (&&)
galleryDirFilter = (not . containsOutputGallery) &&& (not . isConfigFile) &&& (not . isHidden)
isConfigFile = (==) galleryConf . nodeName
containsOutputGallery (File _) = False
containsOutputGallery (Dir _ items) = any ((==) indexFile . nodeName) items
dirProcessor = dirFileProcessor inputDirPath outputDirPath itemsDir
itemProcessor maxRes cache =
itemFileProcessor maxRes cache inputDirPath outputDirPath itemsDir
thumbnailProcessor thumbRes cache =
thumbnailFileProcessor thumbRes cache inputDirPath outputDirPath thumbnailsDir
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