// Copyright 2021 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

syntax = "proto3";

package promise_fuzzer;

message Seq {
    Promise first = 1;
    repeated PromiseFactory promise_factories = 2;
}

message Join {
    repeated Promise promises = 1;
}

message Race {
    repeated Promise promises = 1;
}

message Last {}

message PromiseFactory {
    oneof promise_factory_type {
        // Return a specific promise
        Promise promise = 1;
        // Return the result of the last thing
        Last last = 2;
    }
}

message Never {}

message ScheduleWaker {
  bool owning = 1;
  int32 waker = 2;
}

message Promise {
    oneof promise_type {
        // Seq combinator
        Seq seq = 1;
        // Join combinator
        Join join = 2;
        // Race combinator
        Race race = 3;
        // Never complete
        Never never = 4;
        // Sleep n times, then wakeup
        int32 sleep_first_n = 5;
        // Cancel and be pending
        Cancel cancel_from_inside = 6;
        // Wait for waker n, then continue
        ScheduleWaker wait_once_on_waker = 7;
    }
}

message Cancel {}

message Wakeup {}

message Action {
    oneof action_type {
        // Activity::ForceWakeup
        Wakeup force_wakeup = 1;
        // Cancel the activity
        Cancel cancel = 2;
        // Flush any pending scheduled wakeups
        Wakeup flush_wakeup = 3;
        // Awake waker n if it exists
        int32 awake_waker = 4;
        // Drop waker n if it exists
        int32 drop_waker = 5;
    }
}

message Msg {
    Promise promise = 1;
    repeated Action actions = 2;
}