using ClosedXML.Excel;
using JdeScoping.ExcelIO.Attributes;
using JdeScoping.ExcelIO.Generators;
using JdeScoping.ExcelIO.Helpers;
using Shouldly;
using Xunit;

namespace JdeScoping.ExcelIO.Tests;

public class AttributeTableWriterTests
{
    private readonly OutputColumnCache _cache = new();
    private readonly AttributeTableWriter _writer;

    public AttributeTableWriterTests()
    {
        _writer = new AttributeTableWriter(_cache);
    }

    [OutputTable(TabName = "Test Items", TableName = "Test_Items", ShowHeader = false)]
    private class TestItem
    {
        [OutputColumn(Order = 10, HeaderText = "ID")]
        public int Id { get; set; }

        [OutputColumn(Order = 20, HeaderText = "Name")]
        public string Name { get; set; } = string.Empty;

        [OutputColumn(Order = 30, HeaderText = "Value")]
        public decimal Value { get; set; }
    }

    [OutputTable(TabName = "Wrapped Table", TableName = "Wrapped_Table")]
    private class WrappedItem
    {
        [OutputColumn(Order = 10, HeaderText = "Description", WrapText = true, AutoWidth = false, Width = 65)]
        public string Description { get; set; } = string.Empty;
    }

    private class NoAttributeItem
    {
        public string Data { get; set; } = string.Empty;
    }

    [Fact]
    public void WriteTable_CreatesTableWithCorrectColumns()
    {
        using var workbook = new XLWorkbook();
        var worksheet = workbook.Worksheets.Add("Test");

        var data = new List<TestItem>
        {
            new() { Id = 1, Name = "Item 1", Value = 10.5m },
            new() { Id = 2, Name = "Item 2", Value = 20.5m }
        };

        var table = _writer.WriteTable(worksheet, 1, 1, data);

        table.ShouldNotBeNull();
        table.ColumnCount().ShouldBe(3);
        table.RowCount().ShouldBe(3); // Header + 2 data rows
    }

    [Fact]
    public void WriteTable_UsesLight18TableStyle()
    {
        using var workbook = new XLWorkbook();
        var worksheet = workbook.Worksheets.Add("Test");

        var data = new List<TestItem> { new() { Id = 1, Name = "Test", Value = 100m } };

        var table = _writer.WriteTable(worksheet, 1, 1, data);

        table.ShouldNotBeNull();
        table.Theme.ShouldBe(XLTableTheme.TableStyleLight18);
    }

    [Fact]
    public void WriteTable_SetsColumnHeaders()
    {
        using var workbook = new XLWorkbook();
        var worksheet = workbook.Worksheets.Add("Test");

        var data = new List<TestItem> { new() { Id = 1, Name = "Test", Value = 100m } };

        _writer.WriteTable(worksheet, 1, 1, data);

        worksheet.Cell(1, 1).Value.GetText().ShouldBe("ID");
        worksheet.Cell(1, 2).Value.GetText().ShouldBe("Name");
        worksheet.Cell(1, 3).Value.GetText().ShouldBe("Value");
    }

    [Fact]
    public void WriteTable_WritesDataRows()
    {
        using var workbook = new XLWorkbook();
        var worksheet = workbook.Worksheets.Add("Test");

        var data = new List<TestItem>
        {
            new() { Id = 1, Name = "Item 1", Value = 10.5m },
            new() { Id = 2, Name = "Item 2", Value = 20.5m }
        };

        _writer.WriteTable(worksheet, 1, 1, data);

        worksheet.Cell(2, 1).Value.GetNumber().ShouldBe(1);
        worksheet.Cell(2, 2).Value.GetText().ShouldBe("Item 1");
        worksheet.Cell(2, 3).Value.GetNumber().ShouldBe(10.5);
        worksheet.Cell(3, 1).Value.GetNumber().ShouldBe(2);
    }

    [Fact]
    public void WriteTable_WithShowHeader_CreatesMergedHeader()
    {
        using var workbook = new XLWorkbook();
        var worksheet = workbook.Worksheets.Add("Test");

        var data = new List<TestItem> { new() { Id = 1, Name = "Test", Value = 100m } };

        _writer.WriteTable(worksheet, 1, 1, data, showHeader: true, headerText: "Test Header");

        // First row should be merged header
        var headerRange = worksheet.Range(1, 1, 1, 3);
        headerRange.IsMerged().ShouldBeTrue();
        worksheet.Cell(1, 1).Value.GetText().ShouldBe("Test Header");

        // Column headers should be on row 2
        worksheet.Cell(2, 1).Value.GetText().ShouldBe("ID");
    }

    [Fact]
    public void WriteTable_EmptyData_CreatesTableWithHeaderOnly()
    {
        using var workbook = new XLWorkbook();
        var worksheet = workbook.Worksheets.Add("Test");

        var data = new List<TestItem>();

        var table = _writer.WriteTable(worksheet, 1, 1, data);

        table.ShouldNotBeNull();
        // Table should exist with headers
        table.ColumnCount().ShouldBe(3);
    }

    [Fact]
    public void WriteTable_NoAttributes_ReturnsNull()
    {
        using var workbook = new XLWorkbook();
        var worksheet = workbook.Worksheets.Add("Test");

        var data = new List<NoAttributeItem> { new() { Data = "Test" } };

        var table = _writer.WriteTable(worksheet, 1, 1, data);

        table.ShouldBeNull();
    }

    [Fact]
    public void WriteTable_WrappedColumn_SetsFixedWidth()
    {
        using var workbook = new XLWorkbook();
        var worksheet = workbook.Worksheets.Add("Test");

        var data = new List<WrappedItem> { new() { Description = "Long description text" } };

        _writer.WriteTable(worksheet, 1, 1, data);

        worksheet.Column(1).Width.ShouldBe(65);
        worksheet.Column(1).Style.Alignment.WrapText.ShouldBeTrue();
    }

    [Fact]
    public void WriteTable_TableNameOverride_UsesProvidedName()
    {
        using var workbook = new XLWorkbook();
        var worksheet = workbook.Worksheets.Add("Test");

        var data = new List<TestItem> { new() { Id = 1, Name = "Test", Value = 100m } };

        var table = _writer.WriteTable(worksheet, 1, 1, data, tableNameOverride: "Custom_Table");

        table.ShouldNotBeNull();
        table.Name.ShouldBe("Custom_Table");
    }
}