using System;
using System.Threading.Tasks;
using leak_test_project.Infrastructure;
using leak_test_project.Services;
using Moq;
using Xunit;

namespace leak_test_project.Tests.Services
{
    public class Board4253ServiceTests
    {
        [Fact]
        public async Task CheckStatusAsync_Success_ReturnsTrue()
        {
            // Arrange
            var mockComm = new Mock<ICommunication>();
            mockComm.Setup(c => c.IsOpen).Returns(true);
            var service = new Board4253Service(mockComm.Object);
            int channel = 1;
            string expectedCommand = "x00c_001101:owt28006727ea97c7801\r\n";

            // Simulate receiving Success message
            mockComm.Setup(c => c.Write(It.Is<string>(s => s == expectedCommand)))
                .Callback<string>(cmd => {
                    Task.Run(() => {
                        mockComm.Raise(c => c.DataReceived += null, mockComm.Object, "Response: Success <end>");
                    });
                });

            // Act
            bool result = await service.CheckStatusAsync(channel);

            // Assert
            Assert.True(result);
            mockComm.Verify(c => c.Write(expectedCommand), Times.AtLeastOnce);
        }

        [Fact]
        public async Task CheckStatusAsync_Fail_ReturnsFalse()
        {
            // Arrange
            var mockComm = new Mock<ICommunication>();
            mockComm.Setup(c => c.IsOpen).Returns(true);
            var service = new Board4253Service(mockComm.Object);

            // Simulate receiving Fail message
            mockComm.Setup(c => c.Write(It.IsAny<string>()))
                .Callback<string>(cmd => {
                    Task.Run(() => {
                        mockComm.Raise(c => c.DataReceived += null, mockComm.Object, "Response: Fail <end>");
                    });
                });

            // Act
            bool result = await service.CheckStatusAsync(); // 기본값 채널 1 테스트

            // Assert
            Assert.False(result);
        }

        [Fact]
        public async Task ReadIdAsync_ValidId_ReturnsId()
        {
            // Arrange
            var mockComm = new Mock<ICommunication>();
            mockComm.Setup(c => c.IsOpen).Returns(true);
            var service = new Board4253Service(mockComm.Object);
            string expectedId = "ABC1234567890XYZ";
            int channel = 2;
            string expectedCommand = "x00c_002101:ow2800326003e\r\n";

            // Simulate receiving ID
            mockComm.Setup(c => c.Write(It.Is<string>(s => s == expectedCommand)))
                .Callback<string>(cmd => {
                    Task.Run(() => {
                        mockComm.Raise(c => c.DataReceived += null, mockComm.Object, $"ID: {expectedId} <end>");
                    });
                });

            // Act
            string resultId = await service.ReadIdAsync(channel);

            // Assert
            Assert.Equal(expectedId, resultId);
            mockComm.Verify(c => c.Write(expectedCommand), Times.AtLeastOnce);
        }

        [Fact]
        public async Task ReadIdAsync_Timeout_ReturnsNull()
        {
            // Arrange
            var mockComm = new Mock<ICommunication>();
            mockComm.Setup(c => c.IsOpen).Returns(true);
            var service = new Board4253Service(mockComm.Object);
            service.TimeoutMs = 100; // 타임아웃 테스트 속도를 위해 100ms로 설정

            // Act
            string resultId = await service.ReadIdAsync();

            // Assert
            Assert.Null(resultId);
        }
    }
}