{-# LANGUAGE OverloadedStrings #-}

module EncodeSpec where

import Data.IP
import Network.DNS
import Network.DNS.Internal (defaultQuery, makeQuestion)
import Test.Hspec

spec :: Spec
spec = do
    describe "encode" $ do
        it "encodes DNSFormat correctly" $ do
            check1 testQueryA
            check1 testQueryAAAA
            check1 testResponseA
            check1 testResponseTXT

    describe "decode" $ do
        it "decodes DNSFormat correctly" $ do
            check2 testQueryA
            check2 testQueryAAAA
            check2 testResponseA
            check2 testResponseTXT

check1 :: DNSFormat -> Expectation
check1 inp = out `shouldBe` Right inp
  where
    bs = encode inp
    out = decode bs

check2 :: DNSFormat -> Expectation
check2 inp = bs' `shouldBe` bs
  where
    bs = encode inp
    Right out = decode bs
    bs' = encode out

defaultHeader :: DNSHeader
defaultHeader = header defaultQuery

testQueryA :: DNSFormat
testQueryA = defaultQuery {
    header = defaultHeader {
         identifier = 1000
       , qdCount = 1
       }
  , question = [makeQuestion "www.mew.org." A]
  }

testQueryAAAA :: DNSFormat
testQueryAAAA = defaultQuery {
    header = defaultHeader {
         identifier = 1000
       , qdCount = 1
       }
  , question = [makeQuestion "www.mew.org." AAAA]
  }

testResponseA :: DNSFormat
testResponseA = DNSFormat {
    header = DNSHeader {
         identifier = 61046
       , flags = DNSFlags {
           qOrR = QR_Response
         , opcode = OP_STD
         , authAnswer = False
         , trunCation = False
         , recDesired = True
         , recAvailable = True
         , rcode = NoErr
         }
       , qdCount = 1
       , anCount = 8
       , nsCount = 2
       , arCount = 4
       }
  , question = [Question {
                     qname = "492056364.qzone.qq.com."
                   , qtype = A
                   }
                ]
  , answer = [ResourceRecord {
                   rrname = "492056364.qzone.qq.com."
                 , rrtype = A
                 , rrttl = 568
                 , rdlen = 4
                 , rdata = RD_A $ toIPv4 [119, 147, 15, 122]
                 }
            , ResourceRecord {
                   rrname = "492056364.qzone.qq.com."
                 , rrtype = A
                 , rrttl = 568
                 , rdlen = 4
                 , rdata = RD_A $ toIPv4 [119, 147, 79, 106]
                 }
            , ResourceRecord {
                   rrname = "492056364.qzone.qq.com."
                 , rrtype = A
                 , rrttl = 568
                 , rdlen = 4
                 , rdata = RD_A $ toIPv4 [183, 60, 55, 43]
                 }
            , ResourceRecord {
                   rrname = "492056364.qzone.qq.com."
                 , rrtype = A
                 , rrttl = 568
                 , rdlen = 4
                 , rdata = RD_A $ toIPv4 [183, 60, 55, 107]
                 }
            , ResourceRecord {
                   rrname = "492056364.qzone.qq.com."
                 , rrtype = A
                 , rrttl = 568
                 , rdlen = 4
                 , rdata = RD_A $ toIPv4 [113, 108, 7, 172]
                 }
            , ResourceRecord {
                   rrname = "492056364.qzone.qq.com."
                 , rrtype = A
                 , rrttl = 568
                 , rdlen = 4
                 , rdata = RD_A $ toIPv4 [113, 108, 7, 174]
                 }
            , ResourceRecord {
                   rrname = "492056364.qzone.qq.com."
                 , rrtype = A
                 , rrttl = 568
                 , rdlen = 4
                 , rdata = RD_A $ toIPv4 [113, 108, 7, 175]
                 }
            , ResourceRecord {
                   rrname = "492056364.qzone.qq.com."
                 , rrtype = A
                 , rrttl = 568
                 , rdlen = 4
                 , rdata = RD_A $ toIPv4 [119, 147, 15, 100]
                 }
            ]
  , authority = [ ResourceRecord {
                       rrname = "qzone.qq.com."
                     , rrtype = NS
                     , rrttl = 45919
                     , rdlen = 10
                     , rdata = RD_NS "ns-tel2.qq.com."
                     }
                , ResourceRecord {
                       rrname = "qzone.qq.com."
                     , rrtype = NS
                     , rrttl = 45919
                     , rdlen = 10
                     , rdata = RD_NS "ns-tel1.qq.com."
                     }
                ]
  , additional = [ ResourceRecord {
                        rrname = "ns-tel1.qq.com."
                      , rrtype = A
                      , rrttl = 46520
                      , rdlen = 4
                      , rdata = RD_A $ toIPv4 [121, 14, 73, 115]
                      }
                 , ResourceRecord {
                        rrname = "ns-tel2.qq.com."
                      , rrtype = A
                      , rrttl = 2890
                      , rdlen = 4
                      , rdata = RD_A $ toIPv4 [222, 73, 76, 226]
                      }
                 , ResourceRecord {
                        rrname = "ns-tel2.qq.com."
                      , rrtype = A
                      , rrttl = 2890
                      , rdlen = 4
                      , rdata = RD_A $ toIPv4 [183, 60, 3, 202]
                      }
                 , ResourceRecord {
                        rrname = "ns-tel2.qq.com."
                      , rrtype = A
                      , rrttl = 2890
                      , rdlen = 4
                      , rdata = RD_A $ toIPv4 [218, 30, 72, 180]
                      }
                 ]
  }

testResponseTXT :: DNSFormat
testResponseTXT = DNSFormat {
    header = DNSHeader {
         identifier = 48724
       , flags = DNSFlags {
           qOrR = QR_Response
         , opcode = OP_STD
         , authAnswer = False
         , trunCation = False
         , recDesired = True
         , recAvailable = True
         , rcode = NoErr
         }
       , qdCount = 1
       , anCount = 1
       , nsCount = 2
       , arCount = 4
       }
  , question = [Question {
                     qname = "492056364.qzone.qq.com."
                   , qtype = TXT
                   }
                ]
  , answer = [ResourceRecord {
                   rrname = "492056364.qzone.qq.com."
                 , rrtype = TXT
                 , rrttl = 0
                 , rdlen = 16
                 , rdata = RD_TXT "simple txt line"
                 }
            ]
  , authority = [ ResourceRecord {
                       rrname = "qzone.qq.com."
                     , rrtype = NS
                     , rrttl = 45919
                     , rdlen = 10
                     , rdata = RD_NS "ns-tel2.qq.com."
                     }
                , ResourceRecord {
                       rrname = "qzone.qq.com."
                     , rrtype = NS
                     , rrttl = 45919
                     , rdlen = 10
                     , rdata = RD_NS "ns-tel1.qq.com."
                     }
                ]
  , additional = [ ResourceRecord {
                        rrname = "ns-tel1.qq.com."
                      , rrtype = A
                      , rrttl = 46520
                      , rdlen = 4
                      , rdata = RD_A $ toIPv4 [121, 14, 73, 115]
                      }
                 , ResourceRecord {
                        rrname = "ns-tel2.qq.com."
                      , rrtype = A
                      , rrttl = 2890
                      , rdlen = 4
                      , rdata = RD_A $ toIPv4 [222, 73, 76, 226]
                      }
                 , ResourceRecord {
                        rrname = "ns-tel2.qq.com."
                      , rrtype = A
                      , rrttl = 2890
                      , rdlen = 4
                      , rdata = RD_A $ toIPv4 [183, 60, 3, 202]
                      }
                 , ResourceRecord {
                        rrname = "ns-tel2.qq.com."
                      , rrtype = A
                      , rrttl = 2890
                      , rdlen = 4
                      , rdata = RD_A $ toIPv4 [218, 30, 72, 180]
                      }
                 ]
  }