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

namespace Admin.NET.Test.S8;

/// <summary>
/// 规则取数配置校验（T1–T4）。
///
/// 分两级：
///   · ValidateForSave   —— dataset_code 结构 + 目录归属，不要求 Provider 已上线（允许存草稿）；
///   · ValidateForEnable —— 完整运行条件（委托 Enable Gate）。
///
/// S8-STANDARD-DATASET-HARD-CUTOVER-1：原有的 Legacy 分组用例
/// （mode=NULL 可保存 / 缺 expression 被拒 / 不得混填 dataset_code /
///   RequiresDataSource / UnknownDataAccessMode）已全部删除 ——
/// 它们校验的是"两种取数模式之间的边界"，而现在只剩一种模式。
/// 那些字段（DataAccessMode / Expression / DataSourceId）连同校验分支一并物理消失，
/// 用例既写不出来、也无对应风险可守。
/// </summary>
public class S8WatchRuleDataAccessValidatorTests
{
    private const string ReadyDataset = "FAKE_VALIDATOR_DATASET";
    private const string DefinedNoProvider = "FAKE_VALIDATOR_DATASET_NO_PROVIDER";

    private static S8DatasetCapabilities TimeoutCapable() => new()
    {
        SupportsTimeout = true,
        HasSourceObjectId = true,
        HasRelatedObjectCode = true,
        HasDueAt = true,
        HasStatus = true
    };

    private sealed class FakeSource : IS8DatasetDefinitionSource
    {
        public IEnumerable<S8DatasetDefinition> GetDefinitions() => new[]
        {
            new S8DatasetDefinition
            {
                DatasetCode = ReadyDataset,
                DisplayName = "校验测试数据集",
                Kind = S8DatasetKind.Object,
                Capabilities = TimeoutCapable()
            },
            new S8DatasetDefinition
            {
                DatasetCode = DefinedNoProvider,
                DisplayName = "已定义未实现数据集",
                Kind = S8DatasetKind.Object,
                Capabilities = TimeoutCapable()
            }
        };
    }

    private sealed class TimeoutOnlyProvider : IS8MonitoringDataProvider
    {
        public string DatasetCode => ReadyDataset;
        public S8DatasetCapabilities Capabilities => TimeoutCapable();
        public Task<S8MonitoringRowSet> LoadAsync(S8MonitoringDataRequest request, CancellationToken cancellationToken = default)
            => Task.FromResult(S8MonitoringRowSet.Empty);
    }

    private static S8DatasetCatalog Catalog() => new(new[] { new FakeSource() });
    private static S8DatasetEnableGate Gate() =>
        new(Catalog(), new S8MonitoringDataProviderRegistry(new[] { new TimeoutOnlyProvider() }));

    private static AdoS8WatchRule Rule(string ruleType, string datasetCode = null) => new()
    {
        RuleCode = "UT_RULE",
        RuleType = ruleType,
        DatasetCode = datasetCode
    };

    // ---------- T1 / T2 / T3：保存级 ----------

    [Fact]
    public void DatasetRule_WithoutDatasetCode_IsRejectedOnSave()
    {
        var ex = Assert.Throws<S8BizException>(() =>
            S8WatchRuleDataAccessValidator.ValidateForSave(
                Rule("TIMEOUT"), Catalog()));
        Assert.Contains(S8DatasetReasonCode.CodeMissing, ex.Message);
    }

    [Fact]
    public void DatasetRule_WithUndefinedDataset_IsRejectedOnSave()
    {
        var ex = Assert.Throws<S8BizException>(() =>
            S8WatchRuleDataAccessValidator.ValidateForSave(
                Rule("TIMEOUT", "NO_SUCH_DATASET"), Catalog()));
        Assert.Contains(S8DatasetReasonCode.NotDefined, ex.Message);
    }

    [Fact]
    public void DatasetRule_DefinedButProviderMissing_CanBeSavedAsDraft()
    {
        // 关键行为：Provider 未上线时仍可保存配置。
        S8WatchRuleDataAccessValidator.ValidateForSave(
            Rule("TIMEOUT", DefinedNoProvider), Catalog());
    }

    // ---------- T3 / T4：启用级 ----------

    [Fact]
    public void DatasetRule_DefinedButProviderMissing_CannotBeEnabled()
    {
        var ex = Assert.Throws<S8BizException>(() =>
            S8WatchRuleDataAccessValidator.ValidateForEnable(
                Rule("TIMEOUT", DefinedNoProvider),
                Gate(), 1, 1));
        Assert.Contains(S8DatasetReasonCode.ProviderNotRegistered, ex.Message);
    }

    [Fact]
    public void DatasetRule_WithCapabilityMismatch_CannotBeEnabled()
    {
        // TIMEOUT-only 数据集挂 OUT_OF_RANGE 规则。
        var ex = Assert.Throws<S8BizException>(() =>
            S8WatchRuleDataAccessValidator.ValidateForEnable(
                Rule("OUT_OF_RANGE", ReadyDataset),
                Gate(), 1, 1));
        Assert.Contains(S8DatasetReasonCode.CapabilityMismatch, ex.Message);
    }

    [Fact]
    public void DatasetRule_Matching_IsEnabled_WithoutAnySql()
    {
        // 标准数据集规则不需要用户填写任何 SQL。
        var rule = Rule("TIMEOUT", ReadyDataset);
        S8WatchRuleDataAccessValidator.ValidateForSave(rule, Catalog());
        S8WatchRuleDataAccessValidator.ValidateForEnable(rule, Gate(), 1, 1);
    }

}