using Admin.NET.Plugin.AiDOP.Controllers.S0.Quality;
using Admin.NET.Plugin.AiDOP.Dto.S0.Quality;
using Admin.NET.Plugin.AiDOP.Entity.S0.Quality;
using Xunit;

namespace Admin.NET.Plugin.AiDOP.Tests.S0.Quality;

/// <summary>
/// 检验规范聚合必填契约（UAT-S0-10 拍板，2026-09-02）。
/// 新增严格 / 编辑「历史兼容、禁止劣化」是两套规则，分别覆盖。
/// </summary>
public class AdoS0QmsSpecAggregateGuardTests
{
    private static (string, string?)[] RawFields(string? file, string? mat, string? name, string? ver) =>
        [("文件编号", file), ("物料编码", mat), ("原材料名称", name), ("版本", ver)];

    // ==================== 新增 ====================

    [Fact]
    public void Create_WhenAllRequiredPresentAndHasItem_Passes()
    {
        var error = AdoS0QmsSpecAggregateGuard.ValidateCreate(RawFields("F-001", "M-001", "钢板", "V1"), 1);
        Assert.Null(error);
    }

    /// <summary>UAT-S0-10 原始场景：只填文件编号、其余必填全空。</summary>
    [Fact]
    public void Create_WhenOnlyFileNumberFilled_IsRejected()
    {
        var error = AdoS0QmsSpecAggregateGuard.ValidateCreate(RawFields("UATA-BAD-SPEC", null, null, null), 0);
        Assert.Equal("物料编码不能为空", error);
    }

    [Theory]
    [InlineData(null)]
    [InlineData("")]
    [InlineData("   ")]
    public void Create_TreatsWhitespaceAsMissing(string? blank)
    {
        var error = AdoS0QmsSpecAggregateGuard.ValidateCreate(RawFields("F-001", "M-001", blank, "V1"), 1);
        Assert.Equal("原材料名称不能为空", error);
    }

    /// <summary>头字段齐全但 0 条明细，仍必须拒绝——Create / Import 两条入口共用本规则。</summary>
    [Fact]
    public void Create_WhenNoDetail_IsRejected()
    {
        var error = AdoS0QmsSpecAggregateGuard.ValidateCreate(RawFields("F-001", "M-001", "钢板", "V1"), 0);
        Assert.Equal("检验明细至少需要 1 条", error);
    }

    // ==================== 编辑：历史兼容 ====================

    [Fact]
    public void Update_WhenHistoricalFieldWasAlreadyBlank_AllowsStayingBlank()
    {
        // 实测 aidopdev 有 72 条历史记录缺必填字段；它们必须仍可编辑其他字段。
        var error = AdoS0QmsSpecAggregateGuard.ValidateUpdate(
            [("物料编码", null, null), ("版本", "V1", "V2")], existingMeaningfulItemCount: 3, incomingMeaningfulItemCount: 3);
        Assert.Null(error);
    }

    [Fact]
    public void Update_WhenHistoricalRecordHadNoDetail_AllowsStayingZero()
    {
        // 实测 22 条历史记录 0 明细。
        var error = AdoS0QmsSpecAggregateGuard.ValidateUpdate(
            [("物料编码", "M-001", "M-001")], existingMeaningfulItemCount: 0, incomingMeaningfulItemCount: 0);
        Assert.Null(error);
    }

    [Fact]
    public void Update_WhenHistoricalBlankFieldGetsFilled_Passes()
    {
        var error = AdoS0QmsSpecAggregateGuard.ValidateUpdate(
            [("物料编码", "", "M-001")], existingMeaningfulItemCount: 1, incomingMeaningfulItemCount: 1);
        Assert.Null(error);
    }

    // ==================== 编辑：禁止劣化 ====================

    [Fact]
    public void Update_WhenClearingAPopulatedRequiredField_IsRejected()
    {
        var error = AdoS0QmsSpecAggregateGuard.ValidateUpdate(
            [("物料编码", "M-001", "  ")], existingMeaningfulItemCount: 1, incomingMeaningfulItemCount: 1);
        Assert.Equal("物料编码原本已有值，不允许清空", error);
    }

    [Fact]
    public void Update_WhenDeletingAllExistingDetails_IsRejected()
    {
        var error = AdoS0QmsSpecAggregateGuard.ValidateUpdate(
            [("物料编码", "M-001", "M-001")], existingMeaningfulItemCount: 5, incomingMeaningfulItemCount: 0);
        Assert.Equal("该检规原有 5 条检验明细，不允许全部删除", error);
    }

    // ==================== 文件编号：必填已从 [Required] 迁入守卫 ====================

    /// <summary>阶段 1.1 · 场景 1：历史 FileNumber 为空的记录，改其他字段必须能存。</summary>
    [Fact]
    public void Update_WhenHistoricalFileNumberIsNull_AllowsEditingOtherFields()
    {
        // 对应实测的 3 行 qms_gcjygf.wjbh IS NULL。
        var error = AdoS0QmsSpecAggregateGuard.ValidateUpdate(
            [
                ("文件编号", null, null),
                ("物料编码", "M-001", "M-002"),
                ("版本", "V1", "V1")
            ],
            existingMeaningfulItemCount: 2, incomingMeaningfulItemCount: 2);
        Assert.Null(error);
    }

    /// <summary>阶段 1.1 · 场景 2：原本有文件编号，Update 清空必须拒绝。</summary>
    [Fact]
    public void Update_WhenClearingAnExistingFileNumber_IsRejected()
    {
        var error = AdoS0QmsSpecAggregateGuard.ValidateUpdate(
            [("文件编号", "F-001", "")], existingMeaningfulItemCount: 1, incomingMeaningfulItemCount: 1);
        Assert.Equal("文件编号原本已有值，不允许清空", error);
    }

    [Fact]
    public void Create_WhenFileNumberMissing_IsRejected()
    {
        var error = AdoS0QmsSpecAggregateGuard.ValidateCreate(RawFields(null, "M-001", "钢板", "V1"), 1);
        Assert.Equal("文件编号不能为空", error);
    }

    // ==================== 明细归一化：全空占位不落库 ====================

    /// <summary>阶段 1.1 · 场景 3：1 实 + 1 空 → 只保留 1 条真实明细。</summary>
    [Fact]
    public void Meaningful_DropsBlankPlaceholderRows_KeepingOnlyRealDetails()
    {
        var incoming = new List<AdoS0QmsRawInspectionSpecEntryDto>
        {
            new() { InspectionItem = "外观", UpperLimit = "10" },
            new() { InspectionItem = "", InspectionStandard = "   ", UpperLimit = null }, // 前端 addItem 的空占位
        };

        var kept = AdoS0QmsSpecAggregateGuard.Meaningful(incoming);

        Assert.Single(kept);
        Assert.Equal("外观", kept[0].InspectionItem);
        // 过滤结果同时用于数量校验，保证「校验看到的」与「写进库的」一致
        Assert.Null(AdoS0QmsSpecAggregateGuard.ValidateCreate(RawFields("F-001", "M-001", "钢板", "V1"), kept.Count));
    }

    /// <summary>阶段 1.1 · 场景 4：明细全为空占位 → Create 按 0 明细拒绝。</summary>
    [Fact]
    public void Create_WhenAllDetailsAreBlankPlaceholders_IsRejected()
    {
        var kept = AdoS0QmsSpecAggregateGuard.Meaningful(new List<AdoS0QmsRawInspectionSpecEntryDto> { new(), new() });

        Assert.Empty(kept);
        Assert.Equal("检验明细至少需要 1 条",
            AdoS0QmsSpecAggregateGuard.ValidateCreate(RawFields("F-001", "M-001", "钢板", "V1"), kept.Count));
    }

    /// <summary>阶段 1.1 · 场景 5：历史 0 明细 + UI 空占位 → 放行，且不得写出任何明细。</summary>
    [Fact]
    public void Update_WhenHistoricalHadNoDetailAndUiAddsBlankPlaceholder_WritesNothing()
    {
        // UI 新补的空占位没有 Id → 不进写入集
        var written = AdoS0QmsSpecAggregateGuard.ForUpdateWrite(new List<AdoS0QmsProcessInspectionSpecEntryDto> { new() });

        Assert.Empty(written); // 写库用的就是这份 → 不会新增全空明细
        Assert.Null(AdoS0QmsSpecAggregateGuard.ValidateUpdate(
            [("物料编码", "M-001", "M-001")], existingMeaningfulItemCount: 0, incomingMeaningfulItemCount: 0));
    }

    /// <summary>
    /// 阶段 1.1 · 场景 10：Update 是 delete-all + 全量重建语义，
    /// 因此写入集必须保留**历史已持久化**的空明细（带 Id），否则用户编辑一次头字段
    /// 就会静默删掉库里的空行——实测 aidopdev 有 10 条这样的行，分布在 9 张真实主单上。
    /// </summary>
    [Fact]
    public void Update_KeepsPersistedEmptyDetail_ButDropsNewEmptyPlaceholder()
    {
        var incoming = new List<AdoS0QmsRawInspectionSpecEntryDto>
        {
            new() { Id = 101, InspectionItem = "外观" },   // 历史真实明细
            new() { Id = 102 },                            // 历史已持久化的空明细 → 必须保留
            new() { InspectionItem = "  " },               // 本次 UI 新补的空占位 → 必须丢弃
        };

        var written = AdoS0QmsSpecAggregateGuard.ForUpdateWrite(incoming);

        Assert.Equal(2, written.Count);
        Assert.Equal(new long?[] { 101, 102 }, written.Select(x => x.Id).ToArray());
        // 数量校验仍只认 meaningful：这里只有 1 条有内容
        Assert.Single(AdoS0QmsSpecAggregateGuard.Meaningful(incoming));
    }

    /// <summary>Create 侧相反：任何空明细都没有 Id，一律不落库。</summary>
    [Fact]
    public void Create_NeverPersistsEmptyDetail_EvenIfClientSuppliesAnId()
    {
        var incoming = new List<AdoS0QmsRawInspectionSpecEntryDto> { new() { InspectionItem = "外观" }, new() { Id = 999 } };

        // Create 走 Meaningful，不走 ForUpdateWrite → 带 Id 的空行同样不落库
        Assert.Single(AdoS0QmsSpecAggregateGuard.Meaningful(incoming));
    }

    /// <summary>
    /// 「原有 ≥1 明细不许删空」必须按 meaningful 计。
    /// 若按 raw count，一张明细全为空的历史主单会被自己的空占位永久锁死、无法保存。
    /// </summary>
    [Fact]
    public void Update_WhenAllExistingDetailsAreEmpty_IsNotLockedOut()
    {
        var existingRows = new List<AdoS0QmsRawInspectionSpecEntry> { new(), new() }; // 2 条空行
        var existingMeaningful = AdoS0QmsSpecAggregateGuard.CountMeaningful(existingRows);

        Assert.Equal(0, existingMeaningful);
        Assert.Null(AdoS0QmsSpecAggregateGuard.ValidateUpdate(
            [("物料编码", "M-001", "M-001")], existingMeaningful, incomingMeaningfulItemCount: 0));
    }

    [Fact]
    public void CountMeaningful_OnEntities_MatchesDtoSemantics()
    {
        Assert.Equal(1, AdoS0QmsSpecAggregateGuard.CountMeaningful(new List<AdoS0QmsRawInspectionSpecEntry>
        {
            new() { InspectionItem = "外观" }, new() { InspectionItem = "   " }, new()
        }));
        Assert.Equal(2, AdoS0QmsSpecAggregateGuard.CountMeaningful(new List<AdoS0QmsProcessInspectionSpecEntry>
        {
            new() { OperationCode = "OP10" }, new() { PeelingForce = 5 }, new()
        }));
    }

    /// <summary>阶段 1.1 · 场景 6：原有真实明细被删到只剩空占位 → 按「删到 0」拒绝。</summary>
    [Fact]
    public void Update_WhenRealDetailsReducedToBlankPlaceholderOnly_IsRejected()
    {
        var kept = AdoS0QmsSpecAggregateGuard.Meaningful(new List<AdoS0QmsFqcInspectionSpecEntryDto> { new() });

        Assert.Empty(kept);
        Assert.Equal("该检规原有 3 条检验明细，不允许全部删除",
            AdoS0QmsSpecAggregateGuard.ValidateUpdate(
                [("物料编码", "M-001", "M-001")], existingMeaningfulItemCount: 3, incomingMeaningfulItemCount: kept.Count));
    }

    /// <summary>阶段 1.1 · 场景 7：导入侧口径与实体侧同源——空明细行不落库，全空 aggregate 拒绝。</summary>
    [Fact]
    public void Import_BlankDetailRowsAreNotCountedAndAllBlankAggregateIsRejected()
    {
        var headerOnly = new AdoS0QmsRawInspectionSpecImportRow { FileNumber = "F-001", MaterialCode = "M-001", RawMaterialName = "钢板", VersionNo = "V1" };
        var blankDetail = new AdoS0QmsRawInspectionSpecImportRow { FileNumber = "F-001" };
        var realDetail = new AdoS0QmsRawInspectionSpecImportRow { FileNumber = "F-001", InspectionItem = "外观" };

        Assert.False(AdoS0QmsSpecAggregateGuard.HasDetailValue(headerOnly));
        Assert.False(AdoS0QmsSpecAggregateGuard.HasDetailValue(blankDetail));
        Assert.True(AdoS0QmsSpecAggregateGuard.HasDetailValue(realDetail));

        // 只有表头行 + 空行的分组 → 0 条明细 → 整份拒绝
        var group = new[] { headerOnly, blankDetail };
        Assert.Equal("检验明细至少需要 1 条",
            AdoS0QmsSpecAggregateGuard.ValidateCreate(
                RawFields("F-001", "M-001", "钢板", "V1"),
                group.Count(AdoS0QmsSpecAggregateGuard.HasDetailValue)));
    }

    [Fact]
    public void Import_ProcessLikeBlankRowIsNotADetail()
    {
        Assert.False(AdoS0QmsSpecAggregateGuard.HasDetailValue(
            new AdoS0QmsProcessLikeInspectionSpecImportRow { FileNumber = "F-001", MaterialCode = "M-001", VersionNo = "V1" }));
        Assert.True(AdoS0QmsSpecAggregateGuard.HasDetailValue(
            new AdoS0QmsProcessLikeInspectionSpecImportRow { FileNumber = "F-001", OperationCode = "OP10" }));
    }

    // ==================== 明细「有内容」判据 ====================

    [Fact]
    public void HasValue_WhenRawEntryIsEntirelyBlank_ReturnsFalse()
    {
        // 前端 openCreate 会自动补一行空明细；它不得让「≥1 条」形同虚设。
        Assert.False(AdoS0QmsSpecAggregateGuard.HasValue(new AdoS0QmsRawInspectionSpecEntryDto
        {
            InspectionItem = "", InspectionStandard = "   ", UpperLimit = null
        }));
    }

    [Fact]
    public void HasValue_WhenRawEntryHasAnyContent_ReturnsTrue()
    {
        Assert.True(AdoS0QmsSpecAggregateGuard.HasValue(new AdoS0QmsRawInspectionSpecEntryDto { InspectionItem = "外观" }));
        Assert.True(AdoS0QmsSpecAggregateGuard.HasValue(new AdoS0QmsRawInspectionSpecEntryDto { Seq = 1 }));
    }

    [Fact]
    public void HasValue_WhenProcessLikeEntryIsEntirelyBlank_ReturnsFalse()
    {
        Assert.False(AdoS0QmsSpecAggregateGuard.HasValue(new AdoS0QmsProcessInspectionSpecEntryDto()));
        Assert.False(AdoS0QmsSpecAggregateGuard.HasValue(new AdoS0QmsFqcInspectionSpecEntryDto()));
        Assert.False(AdoS0QmsSpecAggregateGuard.HasValue(new AdoS0QmsOqcInspectionSpecEntryDto()));
    }

    [Fact]
    public void HasValue_WhenProcessLikeEntryHasAnyContent_ReturnsTrue()
    {
        Assert.True(AdoS0QmsSpecAggregateGuard.HasValue(new AdoS0QmsProcessInspectionSpecEntryDto { OperationCode = "OP10" }));
        Assert.True(AdoS0QmsSpecAggregateGuard.HasValue(new AdoS0QmsFqcInspectionSpecEntryDto { InspectionItem = "尺寸" }));
        Assert.True(AdoS0QmsSpecAggregateGuard.HasValue(new AdoS0QmsOqcInspectionSpecEntryDto { PeelingForce = 5 }));
    }
}