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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
import Data.Function ((&))
import System.FilePath ((</>))
import Data.Aeson (ToJSON)
import qualified Data.Aeson as JSON
import Config
import Files
( FileName
, readDirectory
, localPath
, isHidden
, nodeName
, filterDir
, flattenDir
, root
, (/>)
, ensureParentDir
, isOutdated )
import Input (decodeYamlFile, readInputTree)
import Resource (ResourceTree, buildResourceTree, cleanupResourceDir)
import Gallery (buildGalleryTree)
import Processors
writeJSON :: ToJSON a => FileName -> a -> IO ()
writeJSON outputPath object =
do
putStrLn $ "Generating:\t" ++ outputPath
ensureParentDir JSON.encodeFile outputPath object
compileGallery :: FilePath -> FilePath -> IO ()
compileGallery inputDirPath outputDirPath =
do
fullConfig <- readConfig inputGalleryConf
let config = compiler fullConfig
-- TODO: exclude output dir if it's under the input dir
inputDir <- readDirectory inputDirPath
let isGalleryFile = \n -> nodeName n == galleryConf
let galleryTree = filterDir (liftM2 (&&) (not . isGalleryFile) (not . isHidden)) inputDir
inputTree <- readInputTree galleryTree
invalidateCache <- isOutdated inputGalleryConf outputIndex
let cache = if invalidateCache then skipCached else withCached
let dirProc = dirFileProcessor inputDirPath outputDirPath itemsDir
let itemProc = itemFileProcessor (pictureMaxResolution config) cache inputDirPath outputDirPath itemsDir
let thumbnailProc = thumbnailFileProcessor (thumbnailResolution config) cache inputDirPath outputDirPath thumbnailsDir
resourceTree <- buildResourceTree dirProc itemProc thumbnailProc inputTree
cleanupResourceDir resourceTree outputDirPath
buildGalleryTree resourceTree
& writeJSON outputIndex
viewer fullConfig
& writeJSON outputViewerConf
where
galleryConf = "gallery.yaml"
itemsDir = "items"
thumbnailsDir = "thumbnails"
inputGalleryConf = inputDirPath </> galleryConf
outputIndex = outputDirPath </> "index.json"
outputViewerConf = outputDirPath </> "viewer.json"
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