using FluentAssertions;
using Microsoft.EntityFrameworkCore;
using Workflow.Application.Form.FormData.Commands;
using Workflow.Application.Form.FormData.Queries;
using Workflow.Domain.Enums;
using Workflow.Domain.Exceptions;
using Workflow.Infrastructure.Persistence;
using Xunit;

namespace Workflow.Tests.Form;

[Collection("FormTests")]
public class FormDataTests
{
    private readonly FormTestFixture _fixture;

    public FormDataTests(FormTestFixtureClassFixture fixture)
    {
        _fixture = fixture;
    }

    /// <summary>
    /// 辅助方法：创建一个已发布的表单定义（含 Formily Schema），用于 FormData 测试。
    /// Schema 包含：name (string, required)、age (number)、gender (string, required)、resume (array)。
    /// </summary>
    private static Domain.Entities.FormDefinition CreatePublishedFormDefinition(Guid formId)
    {
        return new Domain.Entities.FormDefinition
        {
            Id = formId,
            Name = "测试表单",
            Code = $"TEST_FORM_{formId:N}",
            Version = 1,
            Status = FormStatus.Published,
            SchemaJson = """
            {
              "type": "object",
              "properties": {
                "name": {
                  "type": "string",
                  "title": "姓名",
                  "required": true,
                  "x-decorator": "FormItem",
                  "x-component": "Input"
                },
                "age": {
                  "type": "number",
                  "title": "年龄",
                  "x-decorator": "FormItem",
                  "x-component": "InputNumber",
                  "x-component-props": { "min": 0, "max": 150 }
                },
                "gender": {
                  "type": "string",
                  "title": "性别",
                  "required": true,
                  "enum": [
                    { "label": "男", "value": "male" },
                    { "label": "女", "value": "female" }
                  ],
                  "x-decorator": "FormItem",
                  "x-component": "Radio.Group"
                },
                "resume": {
                  "type": "array",
                  "title": "简历附件",
                  "x-decorator": "FormItem",
                  "x-component": "Upload",
                  "x-component-props": { "maxSize": 10485760, "accept": ".pdf,.doc,.docx" }
                }
              }
            }
            """,
        };
    }

    // ====================================================================
    // SubmitFormData
    // ====================================================================

    [Fact]
    public async Task SubmitFormData_StoresDataJson()
    {
        var formId = Guid.NewGuid();
        var instanceId = Guid.NewGuid();
        var dataJson = """{"name":"张三","age":25,"gender":"male"}""";

        await using var db = await _fixture.CreateDbContextWithSeedAsync(
            testName: nameof(SubmitFormData_StoresDataJson),
            seedAction: ctx => ctx.FormDefinitions.Add(CreatePublishedFormDefinition(formId)));

        var handler = new SubmitFormDataCommandHandler(db);
        var formDataId = await handler.Handle(
            new SubmitFormDataCommand(FormDefinitionId: formId, InstanceId: instanceId, DataJson: dataJson),
            CancellationToken.None);

        formDataId.Should().NotBe(Guid.Empty);

        var savedData = await db.FormData.FindAsync(formDataId);
        savedData.Should().NotBeNull();
        savedData!.DataJson.Should().Be(dataJson);
    }

    [Fact]
    public async Task SubmitFormData_AssociatesWithFormDefinitionAndInstance()
    {
        var formId = Guid.NewGuid();
        var instanceId = Guid.NewGuid();

        await using var db = await _fixture.CreateDbContextWithSeedAsync(
            testName: nameof(SubmitFormData_AssociatesWithFormDefinitionAndInstance),
            seedAction: ctx => ctx.FormDefinitions.Add(CreatePublishedFormDefinition(formId)));

        var handler = new SubmitFormDataCommandHandler(db);
        var formDataId = await handler.Handle(
            new SubmitFormDataCommand(FormDefinitionId: formId, InstanceId: instanceId, DataJson: """{"name":"李四","age":30,"gender":"female"}"""),
            CancellationToken.None);

        var savedData = await db.FormData.FindAsync(formDataId);
        savedData.Should().NotBeNull();
        savedData!.FormDefinitionId.Should().Be(formId);
        savedData.InstanceId.Should().Be(instanceId);
    }

    [Fact]
    public async Task SubmitFormData_RequiredFieldMissing_ThrowsBusinessException()
    {
        var formId = Guid.NewGuid();
        var instanceId = Guid.NewGuid();
        var dataJson = """{"age":25,"gender":"male"}""";

        await using var db = await _fixture.CreateDbContextWithSeedAsync(
            testName: nameof(SubmitFormData_RequiredFieldMissing_ThrowsBusinessException),
            seedAction: ctx => ctx.FormDefinitions.Add(CreatePublishedFormDefinition(formId)));

        var handler = new SubmitFormDataCommandHandler(db);
        var act = () => handler.Handle(
            new SubmitFormDataCommand(FormDefinitionId: formId, InstanceId: instanceId, DataJson: dataJson),
            CancellationToken.None);

        await act.Should().ThrowAsync<BusinessException>()
            .WithMessage("*必填*姓名*");

        var count = await db.FormData.CountAsync();
        count.Should().Be(0);
    }

    [Fact]
    public async Task SubmitFormData_InvalidNumberType_ThrowsBusinessException()
    {
        var formId = Guid.NewGuid();
        var instanceId = Guid.NewGuid();
        var dataJson = """{"name":"赵六","age":"abc","gender":"male"}""";

        await using var db = await _fixture.CreateDbContextWithSeedAsync(
            testName: nameof(SubmitFormData_InvalidNumberType_ThrowsBusinessException),
            seedAction: ctx => ctx.FormDefinitions.Add(CreatePublishedFormDefinition(formId)));

        var handler = new SubmitFormDataCommandHandler(db);
        var act = () => handler.Handle(
            new SubmitFormDataCommand(FormDefinitionId: formId, InstanceId: instanceId, DataJson: dataJson),
            CancellationToken.None);

        await act.Should().ThrowAsync<BusinessException>()
            .WithMessage("*age*类型*");

        var count = await db.FormData.CountAsync();
        count.Should().Be(0);
    }

    // ====================================================================
    // GetFormDataByInstance
    // ====================================================================

    [Fact]
    public async Task GetFormDataByInstance_ReturnsFormData()
    {
        var formId = Guid.NewGuid();
        var instanceId = Guid.NewGuid();
        var formDataId = Guid.NewGuid();
        var dataJson = """{"name":"钱七","age":35,"gender":"male"}""";

        await using var db = await _fixture.CreateDbContextWithSeedAsync(
            testName: nameof(GetFormDataByInstance_ReturnsFormData),
            seedAction: ctx =>
            {
                ctx.FormDefinitions.Add(CreatePublishedFormDefinition(formId));
                ctx.FormData.Add(new Domain.Entities.FormData
                {
                    Id = formDataId,
                    FormDefinitionId = formId,
                    InstanceId = instanceId,
                    DataJson = dataJson,
                });
            });

        var handler = new GetFormDataByInstanceQueryHandler(db);
        var result = await handler.Handle(new GetFormDataByInstanceQuery(InstanceId: instanceId), CancellationToken.None);

        result.Should().NotBeNull();
        result!.Id.Should().Be(formDataId);
        result.DataJson.Should().Be(dataJson);
    }

    [Fact]
    public async Task GetFormDataByInstance_NotFound_ReturnsNull()
    {
        await using var db = _fixture.CreateDbContext(testName: nameof(GetFormDataByInstance_NotFound_ReturnsNull));
        var handler = new GetFormDataByInstanceQueryHandler(db);
        var result = await handler.Handle(new GetFormDataByInstanceQuery(InstanceId: Guid.NewGuid()), CancellationToken.None);

        result.Should().BeNull();
    }
}