using JdeScoping.DataAccess.Models.Results;
using Shouldly;
using Xunit;

namespace JdeScoping.DataAccess.Tests.Models;

/// <summary>
/// Unit tests for SearchResult InclusionReason property.
/// </summary>
public sealed class SearchResultTests
{
    #region ManuallySpecified Priority Tests

    [Fact]
    public void InclusionReason_WhenManuallySpecified_ReturnsManuallySpecified()
    {
        // Arrange
        var result = new SearchResult
        {
            ManuallySpecified = true,
            Flagged = false,
            Cardex = false,
            PartsList = false,
            SplitOrder = false
        };

        // Act & Assert
        result.InclusionReason.ShouldBe("ManuallySpecified");
    }

    [Fact]
    public void InclusionReason_ManuallySpecified_TakesPriorityOverFlagged()
    {
        // Arrange
        var result = new SearchResult
        {
            ManuallySpecified = true,
            Flagged = true,
            Cardex = false,
            PartsList = false,
            SplitOrder = false
        };

        // Act & Assert
        result.InclusionReason.ShouldBe("ManuallySpecified");
    }

    [Fact]
    public void InclusionReason_ManuallySpecified_TakesPriorityOverCARDEX()
    {
        // Arrange
        var result = new SearchResult
        {
            ManuallySpecified = true,
            Flagged = false,
            Cardex = true,
            PartsList = false,
            SplitOrder = false
        };

        // Act & Assert
        result.InclusionReason.ShouldBe("ManuallySpecified");
    }

    [Fact]
    public void InclusionReason_ManuallySpecified_TakesPriorityOverAllOtherFlags()
    {
        // Arrange
        var result = new SearchResult
        {
            ManuallySpecified = true,
            Flagged = true,
            Cardex = true,
            PartsList = true,
            SplitOrder = true
        };

        // Act & Assert
        result.InclusionReason.ShouldBe("ManuallySpecified");
    }

    #endregion

    #region Flagged Tests

    [Fact]
    public void InclusionReason_WhenFlagged_ReturnsFlagged()
    {
        // Arrange
        var result = new SearchResult
        {
            ManuallySpecified = false,
            Flagged = true,
            Cardex = false,
            PartsList = false,
            SplitOrder = false
        };

        // Act & Assert
        result.InclusionReason.ShouldBe("Flagged");
    }

    [Fact]
    public void InclusionReason_Flagged_TakesPriorityOverCARDEX()
    {
        // Arrange
        var result = new SearchResult
        {
            ManuallySpecified = false,
            Flagged = true,
            Cardex = true,
            PartsList = false,
            SplitOrder = false
        };

        // Act & Assert
        result.InclusionReason.ShouldBe("Flagged");
    }

    #endregion

    #region CARDEX and PartsList Tests

    [Fact]
    public void InclusionReason_WhenCARDEXAndPartsList_ReturnsCombinedMessage()
    {
        // Arrange
        var result = new SearchResult
        {
            ManuallySpecified = false,
            Flagged = false,
            Cardex = true,
            PartsList = true,
            SplitOrder = false
        };

        // Act & Assert
        result.InclusionReason.ShouldBe("ComponentUsage (CARDEX + Parts List)");
    }

    [Fact]
    public void InclusionReason_WhenOnlyCARDEX_ReturnsCARDEXMessage()
    {
        // Arrange
        var result = new SearchResult
        {
            ManuallySpecified = false,
            Flagged = false,
            Cardex = true,
            PartsList = false,
            SplitOrder = false
        };

        // Act & Assert
        result.InclusionReason.ShouldBe("ComponentUsage (CARDEX)");
    }

    [Fact]
    public void InclusionReason_WhenOnlyPartsList_ReturnsPartsListMessage()
    {
        // Arrange
        var result = new SearchResult
        {
            ManuallySpecified = false,
            Flagged = false,
            Cardex = false,
            PartsList = true,
            SplitOrder = false
        };

        // Act & Assert
        result.InclusionReason.ShouldBe("ComponentUsage (Parts List)");
    }

    #endregion

    #region SplitOrder Tests

    [Fact]
    public void InclusionReason_WhenSplitOrder_ReturnsSplitOrderMessage()
    {
        // Arrange
        var result = new SearchResult
        {
            ManuallySpecified = false,
            Flagged = false,
            Cardex = false,
            PartsList = false,
            SplitOrder = true
        };

        // Act & Assert
        result.InclusionReason.ShouldBe("Split order");
    }

    [Fact]
    public void InclusionReason_CARDEXAndPartsList_TakePriorityOverSplitOrder()
    {
        // Arrange
        var result = new SearchResult
        {
            ManuallySpecified = false,
            Flagged = false,
            Cardex = true,
            PartsList = false,
            SplitOrder = true
        };

        // Act & Assert
        result.InclusionReason.ShouldBe("ComponentUsage (CARDEX)");
    }

    #endregion

    #region Unknown Fallback Tests

    [Fact]
    public void InclusionReason_WhenNoFlagsSet_ReturnsUnknown()
    {
        // Arrange
        var result = new SearchResult
        {
            ManuallySpecified = false,
            Flagged = false,
            Cardex = false,
            PartsList = false,
            SplitOrder = false
        };

        // Act & Assert
        result.InclusionReason.ShouldBe("UNKNOWN");
    }

    [Fact]
    public void InclusionReason_DefaultRecord_ReturnsUnknown()
    {
        // Arrange
        var result = new SearchResult();

        // Act & Assert
        result.InclusionReason.ShouldBe("UNKNOWN");
    }

    #endregion

    #region Priority Order Verification

    [Theory]
    [InlineData(true, true, true, true, true, "ManuallySpecified")]
    [InlineData(false, true, true, true, true, "Flagged")]
    [InlineData(false, false, true, true, true, "ComponentUsage (CARDEX + Parts List)")]
    [InlineData(false, false, true, false, true, "ComponentUsage (CARDEX)")]
    [InlineData(false, false, false, true, true, "ComponentUsage (Parts List)")]
    [InlineData(false, false, false, false, true, "Split order")]
    [InlineData(false, false, false, false, false, "UNKNOWN")]
    public void InclusionReason_FollowsCorrectPriorityOrder(
        bool manuallySpecified,
        bool flagged,
        bool cardex,
        bool partsList,
        bool splitOrder,
        string expectedReason)
    {
        // Arrange
        var result = new SearchResult
        {
            ManuallySpecified = manuallySpecified,
            Flagged = flagged,
            Cardex = cardex,
            PartsList = partsList,
            SplitOrder = splitOrder
        };

        // Act & Assert
        result.InclusionReason.ShouldBe(expectedReason);
    }

    #endregion
}