using System.Collections.Concurrent;
using System.Text.Json;
using backend.Tools;

namespace backend.tests;

// Slim version for Tasks 9-15. Task 16 reopens this file to add IDeviceClient + envelope sending.
public class FakeDeviceChannel : IDeviceChannel
{
    public ConcurrentQueue<JsonElement> PiToolReplies { get; } = new();

    public Task<JsonElement> CallPiToolAsync(string name, JsonElement args, CancellationToken ct)
    {
        if (PiToolReplies.TryDequeue(out var reply))
            return Task.FromResult(reply);
        return Task.FromResult(JsonDocument.Parse("""{"ok":true}""").RootElement);
    }
}