{.used.}

import
  stew/results,
  testutils/unittests
import
  ../../waku/v2/waku_message/topics

suite "Waku Message - Content topics namespacing":

  test "Stringify namespaced content topic":
    ## Given
    var ns = NsContentTopic()
    ns.application = "toychat"
    ns.version = "2"
    ns.name = "huilong"
    ns.encoding = "proto"

    ## When
    let topic = $ns

    ## Then
    check:
      topic == "/toychat/2/huilong/proto"

  test "Parse content topic string - Valid string":
    ## Given
    let topic = "/toychat/2/huilong/proto"

    ## When
    let nsRes = NsContentTopic.parse(topic)

    ## Then
    check nsRes.isOk()

    let ns = nsRes.get()
    check:
      ns.application == "toychat"
      ns.version == "2"
      ns.name == "huilong"
      ns.encoding == "proto"

  test "Parse content topic string - Invalid string: missing leading slash":
    ## Given
    let topic = "toychat/2/huilong/proto"

    ## When
    let ns = NsContentTopic.parse(topic)

    ## Then
    check ns.isErr()
    let err = ns.tryError()
    check:
      err.kind == ParsingErrorKind.InvalidFormat
      err.cause == "topic must start with slash"

  test "Parse content topic string - Invalid string: not namespaced":
    ## Given
    let topic = "/this-is-not-namespaced"

    ## When
    let ns = NsContentTopic.parse(topic)

    ## Then
    check ns.isErr()
    let err = ns.tryError()
    check:
      err.kind == ParsingErrorKind.InvalidFormat
      err.cause == "invalid topic structure"


  test "Parse content topic string - Invalid string: missing encoding part":
    ## Given
    let topic = "/toychat/2/huilong"

    ## When
    let ns = NsContentTopic.parse(topic)

    ## Then
    check ns.isErr()
    let err = ns.tryError()
    check:
      err.kind == ParsingErrorKind.InvalidFormat
      err.cause == "invalid topic structure"

  test "Parse content topic string - Invalid string: too many parts":
    ## Given
    let topic = "/toychat/2/huilong/proto/33"

    ## When
    let ns = NsContentTopic.parse(topic)

    ## Then
    check ns.isErr()
    let err = ns.tryError()
    check:
      err.kind == ParsingErrorKind.InvalidFormat
      err.cause == "invalid topic structure"


suite "Waku Message - Pub-sub topics namespacing":

  test "Stringify named sharding pub-sub topic":
    ## Given
    var ns = NsPubsubTopic.named("waku-dev")

    ## When
    let topic = $ns

    ## Then
    check:
      topic == "/waku/2/waku-dev"

  test "Stringify static sharding pub-sub topic":
    ## Given
    var ns = NsPubsubTopic.staticSharding(cluster=0, shard=2)

    ## When
    let topic = $ns

    ## Then
    check:
      topic == "/waku/2/rs/0/2"

  test "Parse named pub-sub topic string - Valid string":
    ## Given
    let topic = "/waku/2/waku-dev"

    ## When
    let nsRes = NsPubsubTopic.parse(topic)

    ## Then
    check nsRes.isOk()

    let ns = nsRes.get()
    check:
      ns.name == "waku-dev"

  test "Parse static sharding pub-sub topic string - Valid string":
    ## Given
    let topic = "/waku/2/rs/16/42"

    ## When
    let nsRes = NsPubsubTopic.parse(topic)

    ## Then
    check nsRes.isOk()

    let ns = nsRes.get()
    check:
      ns.cluster == 16
      ns.shard == 42

  test "Parse pub-sub topic string - Invalid string: invalid protocol version":
    ## Given
    let topic = "/waku/1/rs/16/42"

    ## When
    let ns = NsPubsubTopic.parse(topic)

    ## Then
    check ns.isErr()
    let err = ns.tryError()
    check:
      err.kind == ParsingErrorKind.InvalidFormat

  test "Parse static sharding pub-sub topic string - Invalid string: empty shard value":
    ## Given
    let topic = "/waku/2/rs//02"

    ## When
    let ns = NsPubsubTopic.parse(topic)

    ## Then
    check ns.isErr()
    let err = ns.tryError()
    check:
      err.kind == ParsingErrorKind.MissingPart
      err.part == "shard_cluster_index"


  test "Parse static sharding pub-sub topic string - Invalid string: cluster value":
    ## Given
    let topic = "/waku/2/rs/xx/77"

    ## When
    let ns = NsPubsubTopic.parse(topic)

    ## Then
    check ns.isErr()
    let err = ns.tryError()
    check:
      err.kind == ParsingErrorKind.InvalidFormat