using FluentAssertions;
using Workflow.Application.Form.Schema;
using Xunit;

namespace BuildFlow.Workflow.Tests.Form;

/// <summary>
/// 钉钉式节点级字段权限的纯单元测试。
/// 验证 FieldPermissionEvaluator.GetHiddenFieldsByNodePermission 正确按节点 config 的
/// fieldPermissions（字段 path → 动作）计算出 hidden 字段集合。
/// </summary>
public class NodeFieldPermissionTests
{
    private static readonly IReadOnlyList<FieldSummary> SampleFields = new[]
    {
        new FieldSummary("amount", "number", "InputNumber", false, "金额", [], [], [], null),
        new FieldSummary("reason", "string", "Input", true, "事由", [], [], [], null),
        new FieldSummary("attachment", "array", "Upload", false, "附件", [], [], [], null),
    };

    [Fact]
    public void NullPermissions_ReturnsEmpty()
    {
        var hidden = FieldPermissionEvaluator.GetHiddenFieldsByNodePermission(SampleFields, null);
        hidden.Should().BeEmpty();
    }

    [Fact]
    public void EmptyPermissions_ReturnsEmpty()
    {
        var hidden = FieldPermissionEvaluator.GetHiddenFieldsByNodePermission(SampleFields, new Dictionary<string, string>());
        hidden.Should().BeEmpty();
    }

    [Fact]
    public void HiddenFields_AreCollected()
    {
        var perms = new Dictionary<string, string>
        {
            ["amount"] = "editable",
            ["reason"] = "hidden",
            ["attachment"] = "visible",
        };

        var hidden = FieldPermissionEvaluator.GetHiddenFieldsByNodePermission(SampleFields, perms);

        hidden.Should().ContainSingle().Which.Should().Be("reason");
    }

    [Fact]
    public void UnknownPath_IsIgnored()
    {
        // 权限配置里写了表单不存在的字段路径，应被忽略（不误伤、不报错）
        var perms = new Dictionary<string, string>
        {
            ["nonExistent"] = "hidden",
            ["amount"] = "hidden",
        };

        var hidden = FieldPermissionEvaluator.GetHiddenFieldsByNodePermission(SampleFields, perms);

        hidden.Should().ContainSingle().Which.Should().Be("amount");
    }

    [Fact]
    public void AllHidden_AllFieldsCollected()
    {
        var perms = new Dictionary<string, string>
        {
            ["amount"] = "hidden",
            ["reason"] = "hidden",
            ["attachment"] = "hidden",
        };

        var hidden = FieldPermissionEvaluator.GetHiddenFieldsByNodePermission(SampleFields, perms);

        hidden.Should().HaveCount(3);
    }
}