using SheetMe.Core.Serialization;

namespace SheetMe.Core.Tests;

/// <summary>
/// FarPoint Spread XML 파서 테스트.
/// 합성 샘플 기반(테스트 DB 의 실물 2건은 셀 없는 기본 골격) — 셀 있는 실서식 확보 시 재검증.
/// </summary>
[TestClass]
public sealed class FarPointSpreadParserTests
{
    private const string SyntheticXml = """
        <?xml version="1.0" encoding="utf-8"?>
        <Spread class="M.EMR.UserControl.Spread" assembly="M.EMR.UserControl">
          <Presentation>
            <Sheets>
              <Sheet index="0">
                <AxisModels>
                  <Row class="FarPoint.Win.Spread.Model.DefaultSheetAxisModel" defaultSize="24" orientation="Vertical" count="500">
                    <Items>
                      <Item index="0"><Size>40</Size></Item>
                      <Item index="2"><Size>60</Size></Item>
                    </Items>
                  </Row>
                  <Column class="FarPoint.Win.Spread.Model.DefaultSheetAxisModel" orientation="Horizontal" count="500">
                    <Items>
                      <Item index="-1"><Size>80</Size></Item>
                      <Item index="1"><Size>120</Size></Item>
                    </Items>
                  </Column>
                </AxisModels>
                <SpanModel class="FarPoint.Win.Spread.Model.DefaultSheetSpanModel">
                  <CellRange Row="0" Column="0" RowCount="1" ColumnCount="2" />
                </SpanModel>
              </Sheet>
            </Sheets>
          </Presentation>
          <Data>
            <Sheets>
              <Sheet index="0">
                <DataArea class="FarPoint.Win.Spread.Model.DefaultSheetDataModel" rows="500" columns="500">
                  <Cell Row="0" Column="0"><Data type="System.String">평가 항목</Data></Cell>
                  <Cell Row="1" Column="0"><Data type="System.String">보행</Data></Cell>
                  <Cell Row="1" Column="1"><Data type="System.String">3점</Data></Cell>
                </DataArea>
              </Sheet>
            </Sheets>
          </Data>
        </Spread>
        """;

    /// <summary>합성 샘플 — 축 크기/기본값/스팬/셀 추출</summary>
    [TestMethod]
    public void Parse_Synthetic_ExtractsAll()
    {
        var grid = FarPointSpreadParser.Parse(SyntheticXml);

        Assert.IsNotNull(grid);
        Assert.AreEqual(24, grid!.DefaultRowHeight, "defaultSize 어트리뷰트");
        Assert.AreEqual(80, grid.DefaultColWidth, "index=-1 Item 기본값");
        Assert.AreEqual(40, grid.RowHeightOf(0));
        Assert.AreEqual(24, grid.RowHeightOf(1), "미지정 행은 기본값");
        Assert.AreEqual(60, grid.RowHeightOf(2));
        Assert.AreEqual(120, grid.ColWidthOf(1));
        Assert.AreEqual(80, grid.ColWidthOf(0));

        Assert.AreEqual(1, grid.Spans.Count);
        Assert.AreEqual(2, grid.Spans[0].ColSpan);

        Assert.AreEqual(3, grid.Cells.Count);
        Assert.AreEqual("평가 항목", grid.Cells[0].Text);
        Assert.AreEqual(1, grid.Cells[2].Row);
        Assert.AreEqual(1, grid.Cells[2].Col);
    }

    /// <summary>실물 기본 골격(S999) — 예외 없이 파싱, 기본 크기 유지</summary>
    [TestMethod]
    public void Parse_EmptySkeleton_Succeeds()
    {
        const string skeleton = """
            <Spread class="M.EMR.UserControl.Spread">
              <Presentation>
                <Sheets><Sheet index="0">
                  <AxisModels>
                    <Row class="FarPoint.Win.Spread.Model.DefaultSheetAxisModel" orientation="Vertical" count="500">
                      <Items><Item index="-1" /></Items>
                    </Row>
                    <Column class="FarPoint.Win.Spread.Model.DefaultSheetAxisModel" orientation="Horizontal" count="500">
                      <Items><Item index="-1" /></Items>
                    </Column>
                  </AxisModels>
                </Sheet></Sheets>
              </Presentation>
              <Data><Sheets><Sheet index="0">
                <DataArea class="FarPoint.Win.Spread.Model.DefaultSheetDataModel" rows="500" columns="500" />
              </Sheet></Sheets></Data>
            </Spread>
            """;

        var grid = FarPointSpreadParser.Parse(skeleton);

        Assert.IsNotNull(grid);
        Assert.AreEqual(20, grid!.DefaultRowHeight);
        Assert.AreEqual(62, grid.DefaultColWidth);
        Assert.AreEqual(0, grid.Cells.Count);
    }

    /// <summary>손상 입력 — null 반환(자리표시 렌더 유지)</summary>
    [TestMethod]
    public void Parse_Invalid_ReturnsNull()
    {
        Assert.IsNull(FarPointSpreadParser.Parse("not xml at all <"));
    }
}