Done

.gitignore

+.stack-work/
+crawlerISTEX.cabal
+*~
\ No newline at end of file

ChangeLog.md

+# Changelog for crawlerISTEX
+
+## Unreleased changes

LICENSE

+Copyright Mudada (c) 2019
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+    * Neither the name of Mudada nor the names of other
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

README.md

+# crawlerISTEX

Setup.hs

+import Distribution.Simple
+main = defaultMain

app/Main.hs

+{-# LANGUAGE OverloadedStrings #-}
+
+module Main where
+
+import ISTEX
+import ISTEX.Client
+
+main :: IO ()
+main = do
+  res <- runIstexAPIClient $ search (Just 40) (Just "ia") (Just "author,title")
+  case res of
+    (Left err) -> print err
+    (Right val) -> print val

package.yaml

+name:                crawlerISTEX
+version:             0.1.0.0
+github:              "Mudada/crawlerISTEX"
+license:             BSD3
+author:              "Mudada"
+maintainer:          "mael.nicolas77@gmail.com"
+copyright:           "Mudada"
+
+extra-source-files:
+- README.md
+- ChangeLog.md
+
+# Metadata used when publishing your package
+# synopsis:            Short description of your package
+# category:            Web
+
+# To avoid duplicated efforts in documentation and dealing with the
+# complications of embedding Haddock markup inside cabal files, it is
+# common to point users to the README.md file.
+description:         Please see the README on GitHub at <https://github.com/Mudada/crawlerISTEX#readme>
+
+dependencies:
+- aeson
+- base >= 4.7 && < 5
+- text
+- lens
+- servant
+- servant-client
+- http-client
+- http-client-tls
+
+library:
+  source-dirs: src
+
+executables:
+  crawlerISTEX-exe:
+    main:                Main.hs
+    source-dirs:         app
+    ghc-options:
+    - -threaded
+    - -rtsopts
+    - -with-rtsopts=-N
+    dependencies:
+    - crawlerISTEX
+
+tests:
+  crawlerISTEX-test:
+    main:                Spec.hs
+    source-dirs:         test
+    ghc-options:
+    - -threaded
+    - -rtsopts
+    - -with-rtsopts=-N
+    dependencies:
+    - crawlerISTEX

src/ISTEX.hs

+module ISTEX where
+
+import ISTEX.Client
+import Network.HTTP.Client (newManager)
+import Network.HTTP.Client.TLS (tlsManagerSettings)
+import Servant.Client
+
+runIstexAPIClient :: ClientM (Documents) -> IO (Either ClientError Documents)
+runIstexAPIClient cmd = do
+  manager' <- newManager tlsManagerSettings
+  runClientM cmd (mkClientEnv manager' $ BaseUrl Https "api.istex.fr" 443 "document")

src/ISTEX/Client.hs

+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE TypeOperators #-}
+{-# LANGUAGE DataKinds #-}
+{-# LANGUAGE DeriveGeneric #-}
+{-# LANGUAGE TemplateHaskell #-}
+
+module ISTEX.Client where
+
+import GHC.Generics
+import Data.Aeson
+import Control.Applicative ((<|>))
+
+import Servant.API
+import Servant.Client
+import Data.Proxy (Proxy(..))
+
+import qualified Data.Text as T
+import qualified Control.Lens as L
+
+data Author = Author
+  {
+    _name :: T.Text,
+    _affiliations :: [T.Text]
+  } deriving (Show, Generic)
+L.makeLenses ''Author
+instance FromJSON Author where
+  parseJSON (Object o) =
+    Author <$> (o .: "name") <*> (o .: "affiliations" <|> pure [])
+
+data Document = Document
+  {
+    _id :: T.Text,
+    _title :: Maybe T.Text,
+    _authors :: [Author]
+  } deriving (Show, Generic)
+L.makeLenses ''Document
+
+instance FromJSON Document where
+  parseJSON (Object o) =
+    Document <$> (o .: "id") <*> (o .:? "title") <*> (o .: "author" <|> pure [])
+
+data Documents = Documents
+  {
+    _total :: Int,
+    _hits :: [Document]
+  } deriving (Show, Generic)
+L.makeLenses ''Documents
+instance FromJSON Documents where
+  parseJSON (Object o) =
+    Documents <$> (o .: "total") <*> (o .: "hits")
+
+type ISTEXAPI = Search
+
+type Search = QueryParam "size" Int
+  :> QueryParam "q" T.Text
+  :> QueryParam "output" T.Text
+  :> Get '[JSON] Documents
+
+istexProxy :: Proxy (ISTEXAPI)
+istexProxy = Proxy
+
+search :: Maybe Int -> Maybe T.Text -> Maybe T.Text -> ClientM Documents
+search = client istexProxy

stack.yaml

+# This file was automatically generated by 'stack init'
+#
+# Some commonly used options have been documented as comments in this file.
+# For advanced use and comprehensive documentation of the format, please see:
+# https://docs.haskellstack.org/en/stable/yaml_configuration/
+
+# Resolver to choose a 'specific' stackage snapshot or a compiler version.
+# A snapshot resolver dictates the compiler version and the set of packages
+# to be used for project dependencies. For example:
+#
+# resolver: lts-3.5
+# resolver: nightly-2015-09-21
+# resolver: ghc-7.10.2
+#
+# The location of a snapshot can be provided as a file or url. Stack assumes
+# a snapshot provided as a file might change, whereas a url resource does not.
+#
+# resolver: ./custom-snapshot.yaml
+# resolver: https://example.com/snapshots/2018-01-01.yaml
+resolver: lts-14.1
+
+# User packages to be built.
+# Various formats can be used as shown in the example below.
+#
+# packages:
+# - some-directory
+# - https://example.com/foo/bar/baz-0.0.2.tar.gz
+# - location:
+#    git: https://github.com/commercialhaskell/stack.git
+#    commit: e7b331f14bcffb8367cd58fbfc8b40ec7642100a
+# - location: https://github.com/commercialhaskell/stack/commit/e7b331f14bcffb8367cd58fbfc8b40ec7642100a
+#  subdirs:
+#  - auto-update
+#  - wai
+packages:
+- .
+# Dependency packages to be pulled from upstream that are not in the resolver
+# using the same syntax as the packages field.
+# (e.g., acme-missiles-0.3)
+# extra-deps: []
+
+# Override default flag values for local packages and extra-deps
+# flags: {}
+
+# Extra package databases containing global packages
+# extra-package-dbs: []
+
+# Control whether we use the GHC we find on the path
+# system-ghc: true
+#
+# Require a specific version of stack, using version ranges
+# require-stack-version: -any # Default
+# require-stack-version: ">=1.9"
+#
+# Override the architecture used by stack, especially useful on Windows
+# arch: i386
+# arch: x86_64
+#
+# Extra directories used by stack for building
+# extra-include-dirs: [/path/to/dir]
+# extra-lib-dirs: [/path/to/dir]
+#
+# Allow a newer minor version of GHC than the snapshot specifies
+# compiler-check: newer-minor

test/Spec.hs

+main :: IO ()
+main = putStrLn "Test suite not yet implemented"