import unittest
import ../libp2p/multibase

const GoTestVectors = [
  [
    "identity",
    "\x00Decentralize everything!!!",
    "Decentralize everything!!!"
  ],
  # [
  #   "base16",
  #   "f446563656e7472616c697a652065766572797468696e67212121",
  #   "Decentralize everything!!!"
  # ],
  # [
  #   "base16upper",
  #   "F446563656E7472616C697A652065766572797468696E67212121",
  #   "Decentralize everything!!!"
  # ],
  [
    "base32",
    "birswgzloorzgc3djpjssazlwmvzhs5dinfxgoijbee",
    "Decentralize everything!!!"
  ],
  [
    "base32upper",
    "BIRSWGZLOORZGC3DJPJSSAZLWMVZHS5DINFXGOIJBEE",
    "Decentralize everything!!!"
  ],
  [
    "base32pad",
    "cirswgzloorzgc3djpjssazlwmvzhs5dinfxgoijbee======",
    "Decentralize everything!!!"
  ],
  [
    "base32padupper",
    "CIRSWGZLOORZGC3DJPJSSAZLWMVZHS5DINFXGOIJBEE======",
    "Decentralize everything!!!"
  ],
  [
    "base32hex",
    "v8him6pbeehp62r39f9ii0pbmclp7it38d5n6e89144",
    "Decentralize everything!!!"
  ],
  [
    "base32hexupper",
    "V8HIM6PBEEHP62R39F9II0PBMCLP7IT38D5N6E89144",
    "Decentralize everything!!!"
  ],
  [
    "base32hexpad",
    "t8him6pbeehp62r39f9ii0pbmclp7it38d5n6e89144======",
    "Decentralize everything!!!"
  ],
  [
    "base32hexpadupper",
    "T8HIM6PBEEHP62R39F9II0PBMCLP7IT38D5N6E89144======",
    "Decentralize everything!!!"
  ],
  [
    "base58btc",
    "z36UQrhJq9fNDS7DiAHM9YXqDHMPfr4EMArvt",
    "Decentralize everything!!!"
  ],
  [
    "base64",
    "mRGVjZW50cmFsaXplIGV2ZXJ5dGhpbmchISE",
    "Decentralize everything!!!"
  ],
  [
    "base64url",
    "uRGVjZW50cmFsaXplIGV2ZXJ5dGhpbmchISE",
    "Decentralize everything!!!"
  ],
  [
    "base64pad",
    "MRGVjZW50cmFsaXplIGV2ZXJ5dGhpbmchISE=",
    "Decentralize everything!!!"
  ],
  [
    "base64urlpad",
    "URGVjZW50cmFsaXplIGV2ZXJ5dGhpbmchISE=",
    "Decentralize everything!!!"
  ],
]

suite "MultiBase test suite":
  test "Zero-length data encoding/decoding test":
    var enc = newString(1)
    var dec = newSeq[byte]()
    var plain = newSeq[byte]()
    var olens: array[21, int]
    check:
      MultiBase.encodedLength("identity", 0) == 1
      MultiBase.decodedLength('\x00', 0) == -1
      MultiBase.decodedLength('\x00', 1) == 0
    check:
      MultiBase.encode("identity", plain) == "\x00"
      # MultiBase.encode("base1", plain) == "1"
      # MultiBase.encode("base2", plain) == "0"
      # MultiBase.encode("base8", plain) == "7"
      # MultiBase.encode("base10", plain) == "9"
      # MultiBase.encode("base16", plain) == "f"
      # MultiBase.encode("base16upper", plain) == "F"
      MultiBase.encode("base32hex", plain) == "v"
      MultiBase.encode("base32hexupper", plain) == "V"
      MultiBase.encode("base32hexpad", plain) == "t"
      MultiBase.encode("base32hexpadupper", plain) == "T"
      MultiBase.encode("base32", plain) == "b"
      MultiBase.encode("base32upper", plain) == "B"
      MultiBase.encode("base32pad", plain) == "c"
      MultiBase.encode("base32padupper", plain) == "C"
      MultiBase.encode("base58btc", plain) == "z"
      MultiBase.encode("base58flickr", plain) == "Z"
      MultiBase.encode("base64", plain) == "m"
      MultiBase.encode("base64pad", plain) == "M"
      MultiBase.encode("base64url", plain) == "u"
      MultiBase.encode("base64urlpad", plain) == "U"
    check:
      len(MultiBase.decode("\x00")) == 0
      # len(MultiBase.decode("1")) == 0
      # len(MultiBase.decode("0")) == 0
      # len(MultiBase.decode("7")) == 0
      # len(MultiBase.decode("9")) == 0
      # len(MultiBase.decode("f")) == 0
      # len(MultiBase.decode("F")) == 0
      len(MultiBase.decode("v")) == 0
      len(MultiBase.decode("V")) == 0
      len(MultiBase.decode("t")) == 0
      len(MultiBase.decode("T")) == 0
      len(MultiBase.decode("b")) == 0
      len(MultiBase.decode("B")) == 0
      len(MultiBase.decode("c")) == 0
      len(MultiBase.decode("C")) == 0
      len(MultiBase.decode("z")) == 0
      len(MultiBase.decode("Z")) == 0
      len(MultiBase.decode("m")) == 0
      len(MultiBase.decode("M")) == 0
      len(MultiBase.decode("u")) == 0
      len(MultiBase.decode("U")) == 0
    check:
      MultiBase.encode("identity", plain, enc,
                       olens[0]) == MultiBaseStatus.Success
      enc == "\x00"
      olens[0] == 1
      # MultiBase.encode("base1", plain, enc,
      #                  olens[1]) == MultiBaseStatus.Success
      # enc == "1"
      # olens[1] == 1
      # MultiBase.encode("base2", plain, enc,
      #                  olens[2]) == MultiBaseStatus.Success
      # enc == "0"
      # olens[2] == 1
      # MultiBase.encode("base8", plain, enc,
      #                  olens[3]) == MultiBaseStatus.Success
      # enc == "7"
      # olens[3] == 1
      # MultiBase.encode("base10", plain, enc,
      #                  olens[4]) == MultiBaseStatus.Success
      # enc == "9"
      # olens[4] == 1
      # MultiBase.encode("base16", plain, enc,
      #                  olens[5]) == MultiBaseStatus.Success
      # enc == "f"
      # olens[5] == 1
      # MultiBase.encode("base16upper", plain, enc,
      #                  olens[6]) == MultiBaseStatus.Success
      # enc == "F"
      # olens[6] == 1
      MultiBase.encode("base32hex", plain, enc,
                       olens[7]) == MultiBaseStatus.Success
      enc == "v"
      olens[7] == 1
      MultiBase.encode("base32hexupper", plain, enc,
                       olens[8]) == MultiBaseStatus.Success
      enc == "V"
      olens[8] == 1
      MultiBase.encode("base32hexpad", plain, enc,
                       olens[9]) == MultiBaseStatus.Success
      enc == "t"
      olens[9] == 1
      MultiBase.encode("base32hexpadupper", plain, enc,
                       olens[10]) == MultiBaseStatus.Success
      enc == "T"
      olens[10] == 1
      MultiBase.encode("base32", plain, enc,
                       olens[11]) == MultiBaseStatus.Success
      enc == "b"
      olens[11] == 1
      MultiBase.encode("base32upper", plain, enc,
                       olens[12]) == MultiBaseStatus.Success
      enc == "B"
      olens[12] == 1
      MultiBase.encode("base32pad", plain, enc,
                       olens[13]) == MultiBaseStatus.Success
      enc == "c"
      olens[13] == 1
      MultiBase.encode("base32padupper", plain, enc,
                       olens[14]) == MultiBaseStatus.Success
      enc == "C"
      olens[14] == 1
      MultiBase.encode("base58btc", plain, enc,
                       olens[15]) == MultiBaseStatus.Success
      enc == "z"
      olens[15] == 1
      MultiBase.encode("base58flickr", plain, enc,
                       olens[16]) == MultiBaseStatus.Success
      enc == "Z"
      olens[16] == 1
    check:
      MultiBase.decode("", dec, olens[0]) == MultiBaseStatus.Incorrect
      MultiBase.decode("\x00", dec, olens[0]) == MultiBaseStatus.Success
      olens[0] == 0
      # MultiBase.decode("1", dec, olens[1]) == MultiBaseStatus.Success
      # olens[1] == 0
      # MultiBase.decode("0", dec, olens[2]) == MultiBaseStatus.Success
      # olens[2] == 0
      # MultiBase.decode("7", dec, olens[3]) == MultiBaseStatus.Success
      # olens[3] == 0
      # MultiBase.decode("9", dec, olens[4]) == MultiBaseStatus.Success
      # olens[4] == 0
      # MultiBase.decode("f", dec, olens[5]) == MultiBaseStatus.Success
      # olens[5] == 0
      # MultiBase.decode("F", dec, olens[6]) == MultiBaseStatus.Success
      # olens[6] == 0
      MultiBase.decode("v", dec, olens[7]) == MultiBaseStatus.Success
      olens[7] == 0
      MultiBase.decode("V", dec, olens[8]) == MultiBaseStatus.Success
      olens[8] == 0
      MultiBase.decode("t", dec, olens[9]) == MultiBaseStatus.Success
      olens[9] == 0
      MultiBase.decode("T", dec, olens[10]) == MultiBaseStatus.Success
      olens[10] == 0
      MultiBase.decode("b", dec, olens[11]) == MultiBaseStatus.Success
      olens[11] == 0
      MultiBase.decode("B", dec, olens[12]) == MultiBaseStatus.Success
      olens[12] == 0
      MultiBase.decode("c", dec, olens[13]) == MultiBaseStatus.Success
      olens[13] == 0
      MultiBase.decode("C", dec, olens[14]) == MultiBaseStatus.Success
      olens[14] == 0
      MultiBase.decode("z", dec, olens[15]) == MultiBaseStatus.Success
      olens[15] == 0
      MultiBase.decode("Z", dec, olens[16]) == MultiBaseStatus.Success
      olens[16] == 0
      MultiBase.decode("m", dec, olens[16]) == MultiBaseStatus.Success
      olens[16] == 0
      MultiBase.decode("M", dec, olens[16]) == MultiBaseStatus.Success
      olens[16] == 0
      MultiBase.decode("u", dec, olens[16]) == MultiBaseStatus.Success
      olens[16] == 0
      MultiBase.decode("U", dec, olens[16]) == MultiBaseStatus.Success
      olens[16] == 0
  test "go-multibase test vectors":
    for item in GoTestVectors:
      let encoding = item[0]
      let encoded = item[1]
      var expect = item[2]
      var bexpect = cast[seq[byte]](expect)
      var outlen = 0
      check:
        MultiBase.encode(encoding, bexpect) == encoded
        MultiBase.decode(encoded) == bexpect

      let elength = MultiBase.encodedLength(encoding, len(expect))
      var ebuffer = newString(elength)
      outlen = 0
      check:
        MultiBase.encode(encoding, bexpect, ebuffer,
                         outlen) == MultiBaseStatus.Success
      ebuffer.setLen(outlen)
      check:
        encoded == ebuffer

      let dlength = MultiBase.decodedLength(encoded[0], len(encoded))
      var dbuffer = newSeq[byte](dlength)
      outlen = 0
      check:
        MultiBase.decode(encoded, dbuffer, outlen) == MultiBaseStatus.Success
      dbuffer.setLen(outlen)
      check:
        bexpect == dbuffer
  test "Unknown codec test":
    var data = @[0x00'u8, 0x01'u8]
    var ebuffer = newString(100)
    var dbuffer = newSeq[byte](100)
    var outlen = 0
    check:
      MultiBase.encode("unknown", data, ebuffer,
                       outlen) == MultiBaseStatus.BadCodec
      MultiBase.decode("\x01\x00", dbuffer, outlen) == MultiBaseStatus.BadCodec
    var r1 = false
    var r2 = false
    try:
      var enc = MultiBase.encode("unknwon", data)
    except MultiBaseError:
      r1 = true

    try:
      var dec = MultiBase.decode("\x01\x00")
    except MultiBaseError:
      r2 = true

    check:
      r1 == true
      r2 == true