using Xunit;

namespace Admin.NET.Plugin.AiDOP.Tests.ApprovalFlow;

/// <summary>
/// S7-FQC-TENANT-AUTHORITY-1 源码契约测试：S7 成品检验审批权威**租户本地化**（仅未来新建）。
///
/// 修复的根因（2026-09-14 审计 EVIDENCE COMPLETE）：
/// - <c>ROLE_S7_FQC_*</c> 三个 Code 全库各只有一行、固定挂默认租户（对照 ROLE_S6_IPQC_* 已各 10 份）；
/// - 所有 S7 定义（57 条，V1–V3 全版本）的 N2/N3 都写死默认租户物理 RoleId
///   1329915020002 / 1329915020003；
/// - 各租户靠 9 条跨租户 SysUserRole 绑定借用，其中 4 条被 Running 实例实际依赖。
///
/// 本批只关未来新建这条口子：租户本地角色 + 定义按租户播种 + N2/N3 改 RoleCode。
/// **不迁** 7 条 Running 的 FlowJsonSnapshot、**不删**跨租户绑定、**不开** TenantStrictRoleBizTypes
/// （顺序必须是 local roles → future definition → active migration → strict guard）。
///
/// 沿用本仓既有做法——源码契约断言而非行为级集成测试：seed 依赖 ISqlSugarClient，
/// 裸 xUnit 进程无法实例化。真实效果由本批 Runtime R1–R10 覆盖。
/// </summary>
public class S7TenantAuthorityContractTests
{
    private const string SupervisorCode = "ROLE_S7_FQC_SUPERVISOR";
    private const string QeCode = "ROLE_S7_FQC_QE";
    private const string InspectorCode = "ROLE_S7_FQC_INSPECTOR";

    private static string AuthoritySeed() => File.ReadAllText(FindFile(
        "server", "Plugins", "Admin.NET.Plugin.AiDOP", "Infrastructure", "S7TenantAuthoritySeed.cs"));

    private static string FlowSeed() => File.ReadAllText(FindFile(
        "server", "Plugins", "Admin.NET.Plugin.AiDOP", "Infrastructure", "FqcInspBillFlowSeed.cs"));

    private static string FlowConst() => File.ReadAllText(FindFile(
        "server", "Plugins", "Admin.NET.Plugin.AiDOP", "FinishedWarehouse", "FqcInspBillFlowBizHandler.cs"));

    private static string Engine() => File.ReadAllText(FindFile(
        "server", "Plugins", "Admin.NET.Plugin.ApprovalFlow", "Service", "FlowEngine", "FlowEngineService.cs"));

    private static string FlowTaskService() => File.ReadAllText(FindFile(
        "server", "Plugins", "Admin.NET.Plugin.ApprovalFlow", "Service", "FlowTask", "FlowTaskService.cs"));

    /// <summary>
    /// **去注释**后的 C# 源码视图。这些文件的注释里会成段引用被淘汰的写法
    /// （如「原写 RoleSupervisorId=1329915020002」「历史实例各用自己的 FlowJsonSnapshot」）来解释
    /// 为什么不再那么做；裸文本 DoesNotContain 会把说明文字当成违规实现命中。
    /// 断言「实现里不得出现 X」时一律用本视图；断言「注释里必须写明某约定」时用原文。
    /// </summary>
    private static string CsCode(string src)
    {
        var s = System.Text.RegularExpressions.Regex.Replace(src, @"/\*.*?\*/", "", System.Text.RegularExpressions.RegexOptions.Singleline);
        var kept = s.Split('\n').Where(l => !l.TrimStart().StartsWith("//", StringComparison.Ordinal));
        return string.Join("\n", kept);
    }

    private static string FlowJsonBody() => Slice(CsCode(FlowSeed()), "private static string BuildFlowJson()", "private static ApprovalFlowEdgeItem BuildEdge");

    // ── §27-1 / §27-2：N2 / N3 权威必须是 RoleCode ──

    /// <summary>N2 检验主管节点必须用 RoleCode 常量，而不是任何数字 Id。</summary>
    [Fact]
    public void DefinitionN2_UsesSupervisorRoleCode()
    {
        var n2 = Slice(FlowJsonBody(), "NodeName = \"检验主管审核\"", "Text = new FlowTextItem");
        Assert.Contains("ApproverIds = FqcInspBillFlowConst.RoleSupervisorCode", n2);
        Assert.DoesNotContain("RoleSupervisorId", n2);
        Assert.DoesNotContain(".ToString()", n2);
    }

    /// <summary>N3 QE 处置节点同理。</summary>
    [Fact]
    public void DefinitionN3_UsesQeRoleCode()
    {
        var n3 = Slice(FlowJsonBody(), "NodeName = \"QE处置\"", "Text = new FlowTextItem");
        Assert.Contains("ApproverIds = FqcInspBillFlowConst.RoleQeCode", n3);
        Assert.DoesNotContain("RoleQeId", n3);
        Assert.DoesNotContain(".ToString()", n3);
    }

    /// <summary>RoleCode 常量的字面值必须与 DB 中既有 Code 完全一致（改字面量会让解析静默落空）。</summary>
    [Theory]
    [InlineData("RoleInspectorCode", InspectorCode)]
    [InlineData("RoleSupervisorCode", SupervisorCode)]
    [InlineData("RoleQeCode", QeCode)]
    public void RoleCodeConstants_MatchExistingDbCodes(string constName, string expected)
    {
        Assert.Contains($"public const string {constName} = \"{expected}\"", FlowConst());
    }

    // ── §27-3：定义里禁止出现默认租户物理 RoleId ──

    /// <summary>
    /// 三个 legacy 物理 RoleId 只能作为「默认租户既有固定 Id」出现在租户本地化种子里，
    /// **不得**出现在流程定义 JSON 的构造中。
    /// </summary>
    [Theory]
    [InlineData("1329915020001")]
    [InlineData("1329915020002")]
    [InlineData("1329915020003")]
    public void DefinitionJson_ContainsNoLegacyPhysicalRoleId(string legacyId)
    {
        Assert.DoesNotContain(legacyId, FlowJsonBody());   // FlowJsonBody 已是去注释视图
    }

    /// <summary>定义构造中不得引用任何 RoleId 常量（即使是本租户的，也只能用 Code）。</summary>
    [Theory]
    [InlineData("RoleInspectorId")]
    [InlineData("RoleSupervisorId")]
    [InlineData("RoleQeId")]
    public void DefinitionJson_ReferencesNoRoleIdConstant(string idConst)
    {
        Assert.DoesNotContain(idConst, FlowJsonBody());
    }

    /// <summary>legacy 固定 Id 仍必须保留在常量与种子里——默认租户的历史 FlowJson 与本地角色靠它对齐。</summary>
    [Fact]
    public void LegacyRoleIds_StillRetainedForDefaultTenantIdentity()
    {
        Assert.Contains("RoleSupervisorId = 1329915020002", FlowConst());
        Assert.Contains("LegacyDefaultTenantRoleId", AuthoritySeed());
        Assert.Contains("tenantId == SqlSugarConst.DefaultTenantId", AuthoritySeed());
    }

    // ── §27-4 / §27-5：角色供给是租户本地的，同 Code 可跨租户共存 ──

    /// <summary>查重键必须是 (TenantId, Code)；用全局 Any(Code) 就是「全库单例」的成因。</summary>
    [Fact]
    public void RoleProvisioning_DedupesByTenantAndCode()
    {
        var body = Slice(AuthoritySeed(), "private static void EnsureTenantLocalRoles", "private static void CopyLegacyCrossTenantMembership");
        Assert.Contains("r.TenantId == tenantId && r.Code == spec.Code", body);
        Assert.Contains("TenantId = tenantId,", body);
    }

    /// <summary>
    /// 同一个 RoleCode 在不同租户必须是不同 RoleId：默认租户沿用固定 Id，其余走雪花号。
    /// 若两处都用固定 Id 就会主键冲突／退化回单例。
    /// </summary>
    [Fact]
    public void SameRoleCode_GetsDistinctRoleIdPerTenant()
    {
        var body = Slice(AuthoritySeed(), "private static void EnsureTenantLocalRoles", "private static void CopyLegacyCrossTenantMembership");
        Assert.Contains("? spec.LegacyDefaultTenantRoleId", body);
        Assert.Contains(": YitIdHelper.NextId()", body);
    }

    /// <summary>旧的全局 EnsureRole（单例成因）必须已从 S7 种子中移除。</summary>
    [Fact]
    public void LegacyGlobalEnsureRole_IsRemovedFromFlowSeed()
    {
        var s = CsCode(FlowSeed());
        Assert.Contains("S7TenantAuthoritySeed.EnsureTenantAuthority(db)", s);
        Assert.DoesNotContain("ClearFilter().Any(x => x.Code == code)", s);
        Assert.DoesNotContain("private static void EnsureRoles(", s);
    }

    /// <summary>租户清单取自 SysTenant 注册表，禁止硬编码具体租户 Id / UAT 账号。</summary>
    [Theory]
    [InlineData("797403760988229")]
    [InlineData("838257186181189")]
    [InlineData("838257212780613")]
    [InlineData("AIDOPDemo")]
    [InlineData("UATQualityA")]
    public void TenantAuthoritySeed_HardcodesNoTenantOrAccount(string forbidden)
    {
        Assert.DoesNotContain(forbidden, AuthoritySeed());
        Assert.DoesNotContain(forbidden, FlowSeed());
    }

    /// <summary>租户来源必须是 SysTenant，而不是 SysOrg（按 Org 播种正是 57 条定义与租户错配的成因）。</summary>
    [Fact]
    public void TenantSet_ComesFromSysTenantNotSysOrg()
    {
        Assert.Contains("db.Queryable<SysTenant>()", AuthoritySeed());
        var publish = Slice(FlowSeed(), "private static void EnsurePublishedFlow", "private static long ResolveTenantOrgId");
        Assert.Contains("S7TenantAuthoritySeed.GetActivatableTenantIds(db)", publish);
        Assert.DoesNotContain("db.Queryable<SysOrg>()", publish);
        Assert.DoesNotContain("foreach (var orgId in orgIds)", publish);
    }

    // ── §十一：定义租户必须等于目标租户 ──

    /// <summary>新定义的 TenantId 必须就是目标租户，不得再经 Org→Tenant 间接解析。</summary>
    [Fact]
    public void NewDefinition_TenantIdEqualsTargetTenant()
    {
        var publish = Slice(FlowSeed(), "private static void EnsurePublishedFlow", "private static long ResolveTenantOrgId");
        Assert.Contains("TenantId = tenantId,", publish);
        Assert.DoesNotContain("ApprovalFlowTenantSeed.ResolveTenantId", publish);
        Assert.Contains("x.TenantId == tenantId", publish);
    }

    // ── §十二：历史定义不得被改动 ──

    /// <summary>不得下架 / 改写 / 删除任何历史定义（原 v2→v3 升级会 SetColumns(IsPublished=false)）。</summary>
    [Fact]
    public void HistoricalDefinitions_AreNeitherUnpublishedNorRewritten()
    {
        var s = CsCode(FlowSeed());
        Assert.DoesNotContain("x.IsPublished == false", s);
        Assert.DoesNotContain("Updateable<ApprovalFlowEntity>", s);
        Assert.DoesNotContain("Deleteable", s);
    }

    /// <summary>补发靠新版本号（既有最大 + 1），不原地改已被实例引用的定义。</summary>
    [Fact]
    public void NewDefinition_UsesIncrementedVersion()
    {
        var publish = Slice(FlowSeed(), "private static void EnsurePublishedFlow", "private static long ResolveTenantOrgId");
        Assert.Contains("Version = (existing?.Version ?? 0) + 1", publish);
    }

    /// <summary>幂等判据是「已含 RoleCode」——重复启动不会反复补发。</summary>
    [Fact]
    public void Seeding_IsIdempotentOnRoleCodePresence()
    {
        var publish = Slice(FlowSeed(), "private static void EnsurePublishedFlow", "private static long ResolveTenantOrgId");
        Assert.Contains("Contains(FqcInspBillFlowConst.RoleSupervisorCode)", publish);
    }

    // ── §27-6：N1 仍是 Initiator ──

    /// <summary>本批不得把 N1 改回 Inspector Role —— 业务设计是「认领人（发起人）」。</summary>
    [Fact]
    public void DefinitionN1_RemainsInitiator()
    {
        var n1 = Slice(FlowJsonBody(), "NodeName = \"检验员检验\"", "Text = new FlowTextItem");
        Assert.Contains("ApproverType = nameof(ApproverTypeEnum.Initiator)", n1);
        Assert.Contains("ApproverIds = \"\"", n1);
    }

    // ── §十四 / §十五：成员语义只复制既有事实，legacy 绑定保留 ──

    /// <summary>成员复制必须是 COPY 而非 MOVE：不得删除任何既有绑定。</summary>
    [Fact]
    public void MembershipCopy_NeverDeletesLegacyBinding()
    {
        Assert.DoesNotContain("Deleteable", CsCode(AuthoritySeed()));
        Assert.Contains("COPY 不是 MOVE", AuthoritySeed());   // 该约定必须写在注释里
    }

    /// <summary>只复制已存在的授权事实，不凭猜测新增业务成员。</summary>
    [Fact]
    public void MembershipCopy_DerivesOnlyFromExistingBindings()
    {
        var body = Slice(AuthoritySeed(), "private static void CopyLegacyCrossTenantMembership", "public static long? ResolveLocalRoleId");
        Assert.Contains("ur.RoleId == spec.LegacyDefaultTenantRoleId", body);
        Assert.Contains("u.TenantId != SqlSugarConst.DefaultTenantId", body);
        // SysUserRole 无唯一键，必须自己防重
        Assert.Contains("x.UserId == user.Id && x.RoleId == localRoleId.Value", body);
    }

    /// <summary>Activation Gate：三角色都有本地角色且各有同租户成员，才为该租户发布 RoleCode 定义。</summary>
    [Fact]
    public void ActivationGate_RequiresLocalRoleWithSameTenantMember()
    {
        var body = Slice(AuthoritySeed(), "public static List<long> GetActivatableTenantIds", "private static List<long> ResolveTenantIds");
        Assert.Contains("ResolveLocalRoleId(db, tenantId, spec.Code)", body);
        Assert.Contains("u.TenantId == tenantId", body);
        Assert.Contains("if (sameTenantMembers == 0) { allReady = false; break; }", body);
    }

    // ── §27-7 / §二十五：本批不得触碰历史实例 ──

    /// <summary>种子与租户权威基线都不得读写 ApprovalFlowInstance / FlowJsonSnapshot。</summary>
    [Theory]
    [InlineData("ApprovalFlowInstance")]
    [InlineData("FlowJsonSnapshot")]
    [InlineData("InitiatorId")]
    public void Seeding_NeverTouchesExistingInstances(string forbidden)
    {
        Assert.DoesNotContain(forbidden, CsCode(AuthoritySeed()));
        Assert.DoesNotContain(forbidden, CsCode(FlowSeed()));
    }

    // ── §二十八 / §二十九：回归与顺序 ──

    /// <summary>S7 通用审批旁路守卫必须仍然生效（上一批 CLOSED，不得被本批影响）。</summary>
    [Fact]
    public void GenericApprovalGuard_StillCoversS7()
    {
        var dict = Slice(FlowTaskService(), "DedicatedEntryOnlyBizTypes = new()", "};");
        Assert.Contains("[\"S7_FQC_INSPBILL\"]", dict);
    }

    /// <summary>
    /// §29：本批**不得**把 S7 加入 TenantStrictRoleBizTypes ——
    /// 7 条 Running 仍是 legacy 物理 RoleId 快照，先开守卫会当场把它们全部拦死。
    /// 正确顺序：local roles → future definition RoleCode → active migration → strict guard。
    /// </summary>
    [Fact]
    public void StrictRoleGuard_NotYetOpenedForS7()
    {
        var set = Slice(Engine(), "TenantStrictRoleBizTypes = new(StringComparer.Ordinal)", "};");
        Assert.DoesNotContain("S7_FQC_INSPBILL", set);
        Assert.Contains("\"IPQC_INSPECTION\"", set);
        Assert.Contains("\"S6_PROCESS_INSPECTION\"", set);
    }

    /// <summary>RoleCode 解析必须是租户内解析（这是 RoleCode 方案成立的前提）。</summary>
    [Fact]
    public void RoleCodeResolver_IsTenantScoped()
    {
        var body = Slice(Engine(), "if (codes.Count > 0)", "if (ids.Count == 0)");
        Assert.Contains("r.TenantId == effectiveTenantId", body);
        Assert.Contains("r.Status == StatusEnum.Enable", body);
        Assert.Contains("codes.Contains(r.Code)", body);
    }

    /// <summary>设计代次常量已升到 v4，且明确它不等于 ApprovalFlow.Version。</summary>
    [Fact]
    public void FlowDefinitionVersion_BumpedAndDocumented()
    {
        var s = FlowConst();
        Assert.Contains("public const int FlowDefinitionVersion = 4;", s);
        Assert.Contains("不等于", s);
    }

    private static string Slice(string src, string from, string to)
    {
        var a = src.IndexOf(from, StringComparison.Ordinal);
        Assert.True(a >= 0, $"未找到起点：{from}");
        var b = src.IndexOf(to, a + from.Length, StringComparison.Ordinal);
        return b > a ? src[a..b] : src[a..];
    }

    private static string FindFile(params string[] parts)
    {
        var dir = new DirectoryInfo(AppContext.BaseDirectory);
        while (dir != null)
        {
            var candidate = Path.Combine(new[] { dir.FullName }.Concat(parts).ToArray());
            if (File.Exists(candidate)) return candidate;
            dir = dir.Parent;
        }
        throw new FileNotFoundException(string.Join("/", parts));
    }
}