using BuildFlow.Shared.Domain.Errors;
using FluentAssertions;
using Microsoft.EntityFrameworkCore;
using Workflow.Application.BuildFlow.Imports.Handlers;
using Workflow.Application.BuildFlow.Imports.Queries;
using Workflow.Domain.Entities;
using Workflow.Domain.Enums;
using Xunit;

namespace BuildFlow.Workflow.Tests.BuildFlow.Imports;

public class ImportJobQueryHandlerTests
{
    private static WorkflowDbContext CreateDbContext()
    {
        var options = new DbContextOptionsBuilder<WorkflowDbContext>()
            .UseInMemoryDatabase(Guid.NewGuid().ToString())
            .Options;
        var db = new WorkflowDbContext(options);
        db.SavingChanges += AuditStub.OnSave;
        return db;
    }

    private static BuildFlowImportJob SeedJob(WorkflowDbContext db, Guid formId, BuildFlowImportJobStatus status)
    {
        var job = new BuildFlowImportJob
        {
            Id = Guid.NewGuid(),
            FormDefinitionId = formId,
            FileUrl = "upload/test.xlsx",
            Status = status
        };
        db.BuildFlowImportJobs.Add(job);
        return job;
    }

    #region GetImportJobList

    [Fact]
    public async Task GetImportJobList_ReturnsAll()
    {
        await using var db = CreateDbContext();
        var formId = Guid.NewGuid();
        SeedJob(db, formId, BuildFlowImportJobStatus.Pending);
        SeedJob(db, formId, BuildFlowImportJobStatus.Success);
        await db.SaveChangesAsync();

        var handler = new GetImportJobListQueryHandler(db);
        var result = await handler.Handle(new GetImportJobListQuery(null, null, 1, 10), CancellationToken.None);

        result.Items.Should().HaveCount(2);
        result.Total.Should().Be(2);
    }

    [Fact]
    public async Task GetImportJobList_FiltersByStatus()
    {
        await using var db = CreateDbContext();
        var formId = Guid.NewGuid();
        SeedJob(db, formId, BuildFlowImportJobStatus.Pending);
        SeedJob(db, formId, BuildFlowImportJobStatus.Success);
        await db.SaveChangesAsync();

        var handler = new GetImportJobListQueryHandler(db);
        var result = await handler.Handle(
            new GetImportJobListQuery(null, (int)BuildFlowImportJobStatus.Pending, 1, 10), CancellationToken.None);

        result.Items.Should().HaveCount(1);
        result.Items[0].Status.Should().Be(BuildFlowImportJobStatus.Pending);
    }

    #endregion

    #region GetImportJob

    [Fact]
    public async Task GetImportJob_ReturnsDto()
    {
        await using var db = CreateDbContext();
        var job = SeedJob(db, Guid.NewGuid(), BuildFlowImportJobStatus.Running);
        await db.SaveChangesAsync();

        var handler = new GetImportJobQueryHandler(db);
        var result = await handler.Handle(new GetImportJobQuery(job.Id), CancellationToken.None);

        result.Should().NotBeNull();
        result.Id.Should().Be(job.Id);
        result.Status.Should().Be(BuildFlowImportJobStatus.Running);
    }

    [Fact]
    public async Task GetImportJob_Missing_ThrowsNotFound()
    {
        await using var db = CreateDbContext();
        var handler = new GetImportJobQueryHandler(db);

        var act = async () => await handler.Handle(new GetImportJobQuery(Guid.NewGuid()), CancellationToken.None);

        var ex = await act.Should().ThrowAsync<NotFoundException>();
        ex.Which.Code.Should().Be(ErrorCode.NotFound);
    }

    #endregion
}