using Admin.NET.Plugin.AiDOP.Entity.S8;
using Admin.NET.Plugin.AiDOP.Infrastructure.S8;
using Admin.NET.Plugin.AiDOP.Service.S8.Rules;
using Admin.NET.Plugin.AiDOP.Service.S8.Rules.Definitions;
using Xunit;

namespace Admin.NET.Test.S8;

/// <summary>
/// TIMEOUT evaluator 纯逻辑回归：运行参数解析 + dedup_key 生成稳定性。
/// 不接 DB / 不接 DI。
///
/// <para><b>S8-RULE-GOVERNANCE-BATCH1 的变化</b>：本文件原先覆盖的是
/// <c>S8TimeoutParams.Parse</c> —— 那个类同时解析判定语义（dueAtField / statusField /
/// completedStates / objectIdField / exceptionTypeCode）与运行参数（graceMinutes）。
/// 判定语义已迁入代码定义，对它的断言移至 <c>S8RuleDefinitionContractTests</c>；
/// 本文件改为覆盖剩下的那一半：<see cref="S8RuleRuntimeParameters"/>。</para>
///
/// <para>dedup_key 相关断言**逐字保留** —— 那部分语义本批未改。</para>
/// </summary>
public class S8TimeoutEvaluatorTests
{
    private static S8RuleDefinition Rule01Definition() =>
        new S8RuleCatalog(new IS8RuleDefinitionSource[] { new S8PurchaseDeliveryRuleDefinitions() })
            .GetRequired(S8PurchaseDeliveryRuleDefinitions.PurchaseDeliveryDateDelayCode);

    private static AdoS8WatchRule Rule(string? paramsJson, string severity = "SERIOUS") => new()
    {
        RuleCode = S8PurchaseDeliveryRuleDefinitions.PurchaseDeliveryDateDelayCode,
        Severity = severity,
        PollIntervalSeconds = 300,
        TriggerCountRequired = 1,
        RecoverCountRequired = 2,
        ParamsJson = paramsJson
    };

    // ───────────────── 运行参数解析（原 params 解析用例的继承者） ─────────────────

    [Fact]
    public void RuntimeParameters_Parse_FullRuntimeSpec()
    {
        var json = """
        {
          "graceMinutes": 5,
          "defaultOccurrenceDeptId": 245,
          "defaultResponsibleDeptId": 246
        }
        """;
        var p = S8RuleRuntimeParameters.Resolve(Rule(json), Rule01Definition());

        Assert.Equal(5, p.GraceMinutes);
        Assert.Equal(245L, p.DefaultOccurrenceDeptId);
        Assert.Equal(246L, p.DefaultResponsibleDeptId);
        Assert.Equal(300, p.PollIntervalSeconds);
        Assert.Equal(1, p.TriggerCountRequired);
        Assert.Equal(2, p.RecoverCountRequired);
        Assert.Equal(S8SeverityCode.Serious, p.Severity);
    }

    [Fact]
    public void RuntimeParameters_Tolerates_MissingOptionalFields()
    {
        var p = S8RuleRuntimeParameters.Resolve(Rule("""{ }"""), Rule01Definition());

        Assert.Equal(0, p.GraceMinutes);   // 定义声明的默认值
        Assert.Null(p.DefaultOccurrenceDeptId);
        Assert.Null(p.DefaultResponsibleDeptId);
    }

    /// <summary>
    /// 关键回归：旧 A 类字段读到也必须忽略。
    /// 这是「用户不能通过 params_json 改判定口径」在参数解析这一层的守卫；
    /// 判定结果层面的守卫在 <c>S8RuleDefinitionContractTests.T5_*</c>。
    /// </summary>
    [Fact]
    public void RuntimeParameters_Ignores_LegacyDefinitionFields()
    {
        var json = """
        {
          "dueAtField": "evil_field",
          "statusField": "evil_status",
          "completedStates": ["OPEN"],
          "objectIdField": "evil_id",
          "exceptionTypeCode": "EVIL",
          "graceMinutes": 7
        }
        """;
        var p = S8RuleRuntimeParameters.Resolve(Rule(json), Rule01Definition());

        // B 类照常生效
        Assert.Equal(7, p.GraceMinutes);

        // A 类不会以任何形式出现在回写的 params_json 里
        var written = p.ToParamsJson();
        Assert.DoesNotContain("evil", written, StringComparison.OrdinalIgnoreCase);
        Assert.DoesNotContain("completedStates", written, StringComparison.Ordinal);
    }

    [Fact]
    public void RuntimeParameters_DoesNotThrow_OnInvalidJson()
    {
        // 旧实现在这里抛 JsonException，由 evaluator 捕获后把整条规则标 params_parse_failed。
        // 现在语义在代码里，一份读不懂的运行参数不该让规则停摆 —— 回落默认值即可。
        var p = S8RuleRuntimeParameters.Resolve(Rule("not-a-json"), Rule01Definition());
        Assert.Equal(0, p.GraceMinutes);
    }

    /// <summary>
    /// severity 非法值必须回落**定义声明的默认值**，而不是被 <c>S8SeverityCode.Normalize</c>
    /// 静默降级成 FOLLOW —— 库里 severity='HIGH' 的那一行当年正是被那条兜底吞进来的。
    /// </summary>
    [Theory]
    [InlineData("HIGH")]
    [InlineData("LOW")]
    [InlineData("")]
    [InlineData(null)]
    public void RuntimeParameters_InvalidSeverity_FallsBackToDefinitionDefault(string? severity)
    {
        var p = S8RuleRuntimeParameters.Resolve(Rule("{}", severity!), Rule01Definition());
        Assert.Equal(S8SeverityCode.Serious, p.Severity);   // Rule 01 的定义默认值
    }

    [Theory]
    [InlineData(S8SeverityCode.Follow)]
    [InlineData(S8SeverityCode.Serious)]
    public void RuntimeParameters_ValidSeverity_IsHonoured(string severity)
    {
        var p = S8RuleRuntimeParameters.Resolve(Rule("{}", severity), Rule01Definition());
        Assert.Equal(severity, p.Severity);
    }

    [Fact]
    public void RuntimeParameters_OutOfRangeColumnValues_FallBackToDefaults()
    {
        var rule = Rule("{}");
        rule.PollIntervalSeconds = 5;        // < 60，越界
        rule.TriggerCountRequired = 99;      // > 10，越界
        var p = S8RuleRuntimeParameters.Resolve(rule, Rule01Definition());

        Assert.Equal(300, p.PollIntervalSeconds);
        Assert.Equal(1, p.TriggerCountRequired);
    }

    // ───────────────── dedup_key（S8-TENANT-ONLY-BATCH5 后的身份口径） ─────────────────

    [Fact]
    public void BuildDedupKey_IsStable_SameInputsSameOutput()
    {
        var k1 = S8TimeoutRuleEvaluator.BuildDedupKey(1, "G01_TEST_TIMEOUT", "ORDER", "ORDER-TIMEOUT-01");
        var k2 = S8TimeoutRuleEvaluator.BuildDedupKey(1, "G01_TEST_TIMEOUT", "ORDER", "ORDER-TIMEOUT-01");
        Assert.Equal(k1, k2);
        Assert.Equal("T1:RG01_TEST_TIMEOUT:ORDER:ORDER-TIMEOUT-01", k1);
    }

    /// <summary>
    /// 去重身份的四个维度：租户 / 规则 / 对象类型 / 对象 ID。
    ///
    /// <para><b>原用例名为 <c>..._OnTenantFactoryRuleObject</c>，其中一条断言是
    /// 「同租户、不同工厂 → 不同 key」。</b>那条断言现在必须消失，而且不能靠删掉了事：
    /// 工厂段一旦回到 key 里，同一个业务对象会在不同工厂元数据下被当成两个异常，
    /// 而历史 key 与新 key 也会对不上，调度器会一边把旧异常当作"已恢复"、
    /// 一边按新 key 重复建单。故此处改为**正面锁定四维身份 + 反向禁止工厂段**。</para>
    /// </summary>
    [Fact]
    public void BuildDedupKey_Differentiates_OnTenantRuleObject_NotOnFactory()
    {
        var baseKey = S8TimeoutRuleEvaluator.BuildDedupKey(1, "R", "ORDER", "ID");

        // 四个身份维度各自区分。
        Assert.NotEqual(baseKey, S8TimeoutRuleEvaluator.BuildDedupKey(2, "R", "ORDER", "ID"));
        Assert.NotEqual(baseKey, S8TimeoutRuleEvaluator.BuildDedupKey(1, "R2", "ORDER", "ID"));
        Assert.NotEqual(baseKey, S8TimeoutRuleEvaluator.BuildDedupKey(1, "R", "TASK", "ID"));
        Assert.NotEqual(baseKey, S8TimeoutRuleEvaluator.BuildDedupKey(1, "R", "ORDER", "ID2"));

        // 工厂不再是身份的一部分：签名里根本没有该形参，key 里也不得出现 :F 段。
        foreach (var m in typeof(S8TimeoutRuleEvaluator)
                     .GetMethods(System.Reflection.BindingFlags.Static
                                 | System.Reflection.BindingFlags.NonPublic
                                 | System.Reflection.BindingFlags.Public)
                     .Where(x => x.Name == "BuildDedupKey"))
        {
            Assert.DoesNotContain(m.GetParameters(), p =>
                p.Name!.Contains("factory", StringComparison.OrdinalIgnoreCase));
        }
        Assert.DoesNotMatch(@":F\d", baseKey);
    }

    /// <summary>
    /// 同一业务对象在同一租户内只有一个身份 —— 这正是「工厂元数据不参与去重」的可观测后果。
    /// 两次调用之间没有任何工厂输入可供改变，故必然相等。
    /// </summary>
    [Fact]
    public void BuildDedupKey_SameTenantSameObject_IsSingleIdentity()
    {
        Assert.Equal(
            S8TimeoutRuleEvaluator.BuildDedupKey(838257186181189, "RULE_A", "PURCHASE_ORDER_LINE", "PO-1#1"),
            S8TimeoutRuleEvaluator.BuildDedupKey(838257186181189, "RULE_A", "PURCHASE_ORDER_LINE", "PO-1#1"));
    }

    /// <summary>不同租户下的同一来源对象必须是两个身份，杜绝跨租户去重合并。</summary>
    [Fact]
    public void BuildDedupKey_DifferentTenantSameSource_AreDistinct()
    {
        Assert.NotEqual(
            S8TimeoutRuleEvaluator.BuildDedupKey(838257186181189, "RULE_A", "PURCHASE_ORDER_LINE", "PO-1#1"),
            S8TimeoutRuleEvaluator.BuildDedupKey(797403760988229, "RULE_A", "PURCHASE_ORDER_LINE", "PO-1#1"));
    }

    [Fact]
    public void BuildDedupKey_Length_FitsVarchar128()
    {
        // 实体定义 dedup_key VARCHAR(128)。本断言锁定常规标识符不溢出列长度。
        var k = S8TimeoutRuleEvaluator.BuildDedupKey(9999999, "VERY_LONG_RULE_CODE_FOR_PADDING_64____", "EXTREMELY_LONG_OBJECT_TYPE______", "EXTREMELY_LONG_OBJECT_ID________");
        Assert.True(k.Length <= 128, $"dedup_key length {k.Length} exceeds 128: {k}");
    }
}