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|
{-# LANGUAGE OverloadedStrings #-}
module Main
( main
) where
import HTTP
import Control.Applicative ((<$>))
import System.Environment (getArgs, getProgName)
import System.Directory (createDirectoryIfMissing)
import Data.List (intercalate)
import Data.Text (Text)
import qualified Data.Text as T
import qualified Data.Text.IO as T
import Data.Text.Encoding (encodeUtf8)
import Data.Aeson (eitherDecodeStrict)
import CommandLineOptions
import Model.URL
import Model.Json.Search
import Model.Perfume
import PerfumeParser (parsePerfumes)
main :: IO ()
main = do
options@(Options materials ignoredMaterials) <- (parseOptions . map T.pack) <$> getArgs
if null materials
then do
progName <- T.pack <$> getProgName
T.putStrLn (T.concat ["Usage: ", progName, " materials… [--without materials…]"])
else do
eitherPerfumesSequences <- getPerfumesSequences materials
eitherIgnoredPerfumesSequences <- getPerfumesSequences ignoredMaterials
case (eitherPerfumesSequences, eitherIgnoredPerfumesSequences) of
(Left error, _) ->
T.putStrLn error
(_, Left error) ->
T.putStrLn error
(Right perfumesSequences, Right ignoredPerfumesSequences) ->
let commonPerfumes = mergePerfumes perfumesSequences ignoredPerfumesSequences
outputDirectory = "output"
outputName = outputDirectory ++ "/" ++ (T.unpack . fileName $ options) ++ ".csv"
in do
createDirectoryIfMissing True outputDirectory
T.writeFile outputName (csvPerfumes commonPerfumes)
putStrLn ("Successfully generated " ++ outputName)
getPerfumesSequences :: [Text] -> IO (Either Text [[Perfume]])
getPerfumesSequences = fmap sequence <$> sequence . map getHtmlPerfumes
getHtmlPerfumes :: Text -> IO (Either Text [Perfume])
getHtmlPerfumes material = do
eitherPage <- getPage (getIdURL material)
case eitherPage of
Left error ->
return . Left $ error
Right page ->
case eitherDecodeStrict (encodeUtf8 page) :: Either String [Search] of
Left error ->
return . Left . T.pack $ error
Right searches ->
case getMaterialSearch searches of
Nothing ->
return . Left $ T.concat [ "No material identifier found for ", material ]
Just (Search identifier _ name) -> do
T.putStrLn $ T.concat [ "Found material « ", name, " » for ", material, "." ]
fmap parsePerfumes <$> getPage (getMaterialURL identifier)
|
