"use strict"
var __createBinding =
  (this && this.__createBinding) ||
  (Object.create
    ? function (o, m, k, k2) {
        if (k2 === undefined) k2 = k
        Object.defineProperty(o, k2, {
          enumerable: true,
          get: function () {
            return m[k]
          }
        })
      }
    : function (o, m, k, k2) {
        if (k2 === undefined) k2 = k
        o[k2] = m[k]
      })
var __setModuleDefault =
  (this && this.__setModuleDefault) ||
  (Object.create
    ? function (o, v) {
        Object.defineProperty(o, "default", { enumerable: true, value: v })
      }
    : function (o, v) {
        o["default"] = v
      })
var __importStar =
  (this && this.__importStar) ||
  function (mod) {
    if (mod && mod.__esModule) return mod
    var result = {}
    if (mod != null)
      for (var k in mod)
        if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k))
          __createBinding(result, mod, k)
    __setModuleDefault(result, mod)
    return result
  }
Object.defineProperty(exports, "__esModule", { value: true })
exports.makeSingleProducerAsyncInput =
  exports.SingleProducerAsyncInput =
  exports.StateEmit =
  exports.EmitTypeId =
  exports.StateEmpty =
  exports.EmptyTypeId =
  exports.StateError =
  exports.ErrorTypeId =
  exports.StateDone =
  exports.DoneTypeId =
    void 0
// tracing: off
require("../../../../Operator")
const Cause = __importStar(require("../../../../Cause"))
const Tp = __importStar(require("../../../../Collections/Immutable/Tuple"))
const T = __importStar(require("../../../../Effect"))
const E = __importStar(require("../../../../Either"))
const Exit = __importStar(require("../../../../Exit"))
const P = __importStar(require("../../../../Promise"))
const Ref = __importStar(require("../../../../Ref"))
exports.DoneTypeId = Symbol()
class StateDone {
  constructor(a) {
    this.a = a
    this._typeId = exports.DoneTypeId
  }
}
exports.StateDone = StateDone
exports.ErrorTypeId = Symbol()
class StateError {
  constructor(cause) {
    this.cause = cause
    this._typeId = exports.ErrorTypeId
  }
}
exports.StateError = StateError
exports.EmptyTypeId = Symbol()
class StateEmpty {
  constructor(notifyConsumer) {
    this.notifyConsumer = notifyConsumer
    this._typeId = exports.EmptyTypeId
  }
}
exports.StateEmpty = StateEmpty
exports.EmitTypeId = Symbol()
class StateEmit {
  constructor(a, notifyProducer) {
    this.a = a
    this.notifyProducer = notifyProducer
    this._typeId = exports.EmitTypeId
  }
}
exports.StateEmit = StateEmit
/**
 * An MVar-like abstraction for sending data to channels asynchronously. Designed
 * for one producer and multiple consumers.
 *
 * Features the following semantics:
 * - Buffer of size 1
 * - When emitting, the producer waits for a consumer to pick up the value
 *   to prevent "reading ahead" too much.
 * - Once an emitted element is read by a consumer, it is cleared from the buffer, so that
 *   at most one consumer sees every emitted element.
 * - When sending a done or error signal, the producer does not wait for a consumer
 *   to pick up the signal. The signal stays in the buffer after being read by a consumer,
 *   so it can be propagated to multiple consumers.
 * - Trying to publish another emit/error/done after an error/done have already been published
 *   results in an interruption.
 */
class SingleProducerAsyncInput {
  constructor(ref) {
    this.ref = ref
    this.take = this.takeWith(
      (c) => Exit.halt(Cause.map_(c, E.left)),
      (el) => Exit.succeed(el),
      (d) => Exit.fail(E.right(d))
    )
    this.close = T.chain_(T.fiberId, (id) => this.error(Cause.interrupt(id)))
  }
  emit(el) {
    return T.chain_(P.make(), (p) =>
      T.flatten(
        Ref.modify_(this.ref, (state) => {
          switch (state._typeId) {
            case exports.EmitTypeId: {
              return Tp.tuple(
                T.chain_(P.await(state.notifyProducer), () => this.emit(el)),
                state
              )
            }
            case exports.ErrorTypeId: {
              return Tp.tuple(T.interrupt, state)
            }
            case exports.DoneTypeId: {
              return Tp.tuple(T.interrupt, state)
            }
            case exports.EmptyTypeId: {
              return Tp.tuple(
                T.chain_(P.succeed_(state.notifyConsumer, void 0), () => P.await(p)),
                new StateEmit(el, p)
              )
            }
          }
        })
      )
    )
  }
  done(a) {
    return T.chain_(P.make(), (p) =>
      T.flatten(
        Ref.modify_(this.ref, (state) => {
          switch (state._typeId) {
            case exports.EmitTypeId: {
              return Tp.tuple(
                T.chain_(P.await(state.notifyProducer), () => this.done(a)),
                state
              )
            }
            case exports.ErrorTypeId: {
              return Tp.tuple(T.interrupt, state)
            }
            case exports.DoneTypeId: {
              return Tp.tuple(T.interrupt, state)
            }
            case exports.EmptyTypeId: {
              return Tp.tuple(
                P.succeed_(state.notifyConsumer, void 0),
                new StateDone(a)
              )
            }
          }
        })
      )
    )
  }
  error(cause) {
    return T.chain_(P.make(), (p) =>
      T.flatten(
        Ref.modify_(this.ref, (state) => {
          switch (state._typeId) {
            case exports.EmitTypeId: {
              return Tp.tuple(
                T.chain_(P.await(state.notifyProducer), () => this.error(cause)),
                state
              )
            }
            case exports.ErrorTypeId: {
              return Tp.tuple(T.interrupt, state)
            }
            case exports.DoneTypeId: {
              return Tp.tuple(T.interrupt, state)
            }
            case exports.EmptyTypeId: {
              return Tp.tuple(
                P.succeed_(state.notifyConsumer, void 0),
                new StateError(cause)
              )
            }
          }
        })
      )
    )
  }
  takeWith(onError, onElement, onDone) {
    return T.chain_(P.make(), (p) =>
      T.flatten(
        Ref.modify_(this.ref, (state) => {
          switch (state._typeId) {
            case exports.EmitTypeId: {
              return Tp.tuple(
                T.map_(P.succeed_(state.notifyProducer, void 0), () =>
                  onElement(state.a)
                ),
                new StateEmpty(p)
              )
            }
            case exports.ErrorTypeId: {
              return Tp.tuple(T.succeed(onError(state.cause)), state)
            }
            case exports.DoneTypeId: {
              return Tp.tuple(T.succeed(onDone(state.a)), state)
            }
            case exports.EmptyTypeId: {
              return Tp.tuple(
                T.chain_(P.await(state.notifyConsumer), () =>
                  this.takeWith(onError, onElement, onDone)
                ),
                state
              )
            }
          }
        })
      )
    )
  }
}
exports.SingleProducerAsyncInput = SingleProducerAsyncInput
/**
 * Creates a SingleProducerAsyncInput
 */
function makeSingleProducerAsyncInput() {
  return T.map_(
    T.chain_(P.make(), (p) => Ref.makeRef(new StateEmpty(p))),
    (ref) => new SingleProducerAsyncInput(ref)
  )
}
exports.makeSingleProducerAsyncInput = makeSingleProducerAsyncInput
//# sourceMappingURL=producer.js.map
