module ErbSpec(spec) where

import           XPrelude

import           Test.Hspec

import           Erb
import           Puppet.Runner

parsingtests :: [(String, [RubyStatement])]
parsingtests =
  [ ("port = 5432", [ Puts (Value (Literal "port = 5432" ))])
  , ("mode = host=<%= @var %>", [ Puts (Value (Literal "mode = host="))
                               , Puts (Object (Value (Literal "@var")))
                               , Puts (Value (Literal ""))])
  , ("mode = host=<%= var %>", [ Puts (Value (Literal "mode = host="))
                              , Puts (Object (Value (Literal "var")))
                              , Puts (Value (Literal ""))])
  , ("<%= @os['architecture'] %>", [ Puts (Value (Literal ""))
                                   , Puts (LookupOperation (Object (Value (Literal "@os"))) (Value (Literal "architecture")))
                                   , Puts (Value (Literal ""))])
  , ("<%= @os['release']['major'] %>", [ Puts (Value (Literal ""))
                                       , Puts (LookupOperation (LookupOperation (Object (Value (Literal "@os"))) (Value (Literal "release"))) (Value (Literal "major")))
                                       , Puts (Value (Literal ""))])
  , ("<%= @processors['models'] %>", [ Puts (Value (Literal ""))
                                     , Puts (LookupOperation (Object (Value (Literal "@processors"))) (Value (Literal "models")))
                                     , Puts (Value (Literal ""))])
  , ("<%= scope.lookupvar('::fqdn') %>", [ Puts (Value (Literal ""))
                                         , Puts (ScopeObject (Value (Literal "::fqdn")))
                                         , Puts(Value (Literal ""))])
  , ("<%= scope.lookupvar(\"::fqdn\") %>", [ Puts (Value (Literal ""))
                                           , Puts (ScopeObject (Value (Literal "::fqdn")))
                                           , Puts(Value (Literal ""))])
  ]

resolvetests :: [([RubyStatement], Text)]
resolvetests =
  [ ([ Puts (Object (Value (Literal "@hostname")))]
    , "dummy"
    )
  , ([ Puts (LookupOperation (Object (Value (Literal "@os"))) (Value (Literal "architecture")))]
    , "amd64"
    )
  , ([ Puts (LookupOperation (LookupOperation (Object (Value (Literal "@os"))) (Value (Literal "release"))) (Value (Literal "major")))]
    , "7"
    )
  , ([ Puts (LookupOperation (Object (Value (Literal "@processors"))) (Value (Literal "models")))]
    , expectedmodels
    )
  , ([ Puts (ScopeObject (Value (Literal "::fqdn")))]
    , "dummy.dummy.domain"
    )
  ]
 where
   expectedmodels = "[\"Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz\", \"Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz\", \"Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz\", \"Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz\", \"Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz\", \"Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz\", \"Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz\", \"Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz\", \"Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz\"]"

parsingspec =
  for_ parsingtests $ \(s, e) ->
    let item = it ("should parse " <> s) in
    case parseErbString s of
      Left err -> item $ expectationFailure (show err)
      Right r -> item $ r `shouldBe` e

resolvespec =
  let state0 = initialState dummyFacts mempty
      Just (scope_name, scope) = extractScope state0
  in
  for_ resolvetests $ \(s, e) ->
    let item = it ("should resolve " <> show s) in
    case rubyEvaluate scope scope_name s of
      Left err -> item $ expectationFailure (show err)
      Right r -> item $ r `shouldBe` e

spec = describe "Erb" $ do
  parsingspec
  resolvespec