using Xunit;
using Moq;
using FluentAssertions;
using Microsoft.Extensions.Logging;
using Haoliang.Core.Services;
using DeviceStatus = Haoliang.Models.Device.DeviceCurrentStatus;

namespace Haoliang.Tests;

public class ProductionCalculatorTests
{
    [Fact]
    public void CalculateProduction_SameProgram_ReturnsDifference()
    {
        var current = new DeviceStatus
        {
            DeviceId = 1,
            NCProgram = "PROGRAM001",
            CumulativeCount = 150,
            RecordTime = DateTime.Now
        };
        
        var last = new DeviceStatus
        {
            DeviceId = 1,
            NCProgram = "PROGRAM001",
            CumulativeCount = 100,
            RecordTime = DateTime.Now.AddMinutes(-1)
        };
        
        var result = Haoliang.Models.Production.ProductionCalculator.CalculateProduction(current, last);
        
        result.Should().Be(50);
    }

    [Fact]
    public void CalculateProduction_ProgramSwitch_ReturnsCurrentCount()
    {
        var current = new DeviceStatus
        {
            DeviceId = 1,
            NCProgram = "PROGRAM002",
            CumulativeCount = 50,
            RecordTime = DateTime.Now
        };
        
        var last = new DeviceStatus
        {
            DeviceId = 1,
            NCProgram = "PROGRAM001",
            CumulativeCount = 100,
            RecordTime = DateTime.Now.AddMinutes(-1)
        };
        
        var result = Haoliang.Models.Production.ProductionCalculator.CalculateProduction(current, last);
        
        result.Should().Be(50);
    }

    [Fact]
    public void CalculateProduction_NegativeValue_ReturnsZero()
    {
        var current = new DeviceStatus
        {
            DeviceId = 1,
            NCProgram = "PROGRAM001",
            CumulativeCount = 50,
            RecordTime = DateTime.Now
        };
        
        var last = new DeviceStatus
        {
            DeviceId = 1,
            NCProgram = "PROGRAM001",
            CumulativeCount = 100,
            RecordTime = DateTime.Now.AddMinutes(-1)
        };
        
        var result = Haoliang.Models.Production.ProductionCalculator.CalculateProduction(current, last);
        
        result.Should().Be(0);
    }

    [Fact]
    public void CalculateProduction_SameProgramZeroDiff_ReturnsZero()
    {
        var current = new DeviceStatus
        {
            DeviceId = 1,
            NCProgram = "PROGRAM001",
            CumulativeCount = 100,
            RecordTime = DateTime.Now
        };
        
        var last = new DeviceStatus
        {
            DeviceId = 1,
            NCProgram = "PROGRAM001",
            CumulativeCount = 100,
            RecordTime = DateTime.Now.AddMinutes(-1)
        };
        
        var result = Haoliang.Models.Production.ProductionCalculator.CalculateProduction(current, last);
        
        result.Should().Be(0);
    }

    [Fact]
    public void IsNewProgram_DifferentPrograms_ReturnsTrue()
    {
        var result = Haoliang.Models.Production.ProductionCalculator.IsNewProgram("PROGRAM001", "PROGRAM002");
        
        result.Should().BeTrue();
    }

    [Fact]
    public void IsNewProgram_SameProgram_ReturnsFalse()
    {
        var result = Haoliang.Models.Production.ProductionCalculator.IsNewProgram("PROGRAM001", "PROGRAM001");
        
        result.Should().BeFalse();
    }
}