using System.Threading.Tasks;
using Shouldly;
using Volo.Abp;
using Xunit;

namespace Volo.CmsKit.Pages;

public class PageManager_Test : CmsKitDomainTestBase
{
    private readonly PageManager pageManager;
    private readonly CmsKitTestData testData;
    private readonly IPageRepository pageRepository;

    public PageManager_Test()
    {
        pageManager = GetRequiredService<PageManager>();
        testData = GetRequiredService<CmsKitTestData>();
        pageRepository = GetRequiredService<IPageRepository>();
    }

    [Fact]
    public async Task CreateAsync_ShouldWorkProperly_WithNonExistingSlug()
    {
        var title = "My awesome page";
        var slug = "my-awesome-page";
        var content = "<h1>My Awesome Page</h1><p>This is my awesome page content!</p>";

        var page = await pageManager.CreateAsync(title, slug, content);

        page.ShouldNotBeNull();
        page.Title.ShouldBe(title);
        page.Slug.ShouldBe(slug);
        page.Content.ShouldBe(content);
    }

    [Fact]
    public async Task CreateAsync_ShouldThrowException_WithExistingSlug()
    {
        var title = "My awesome page";
        var slug = testData.Page_1_Slug;
        var content = "<h1>My Awesome Page</h1><p>This is my awesome page content!</p>";

        var exception = await Should.ThrowAsync<PageSlugAlreadyExistsException>(async () =>
                            await pageManager.CreateAsync(title, slug, content));

        exception.ShouldNotBeNull();
    }

    [Fact]
    public async Task SetSlugAsync_ShouldWorkProperly_WithNonExistingSlug()
    {
        var newSlug = "freshly-generated-new-slug";
        var page = await pageRepository.GetAsync(testData.Page_1_Id);

        await pageManager.SetSlugAsync(page, newSlug);

        page.Slug.ShouldBe(newSlug);
    }

    [Fact]
    public async Task SetSlugAsync_ShouldThrowException_WithExistingSlug()
    {
        var newSlug = testData.Page_2_Slug;
        var page = await pageRepository.GetAsync(testData.Page_1_Id);

        var exception = await Should.ThrowAsync<PageSlugAlreadyExistsException>(async () =>
                            await pageManager.SetSlugAsync(page, newSlug));

        exception.ShouldNotBeNull();
    }

    [Fact]
    public async Task SetHomePageAsync_ShouldWorkProperly_IfExistHomePage()
    {
        await WithUnitOfWorkAsync(async () =>
        {
            var page = await pageRepository.GetAsync(testData.Page_1_Id);

            await pageManager.SetHomePageAsync(page);
        });

        var page = await pageRepository.GetAsync(testData.Page_1_Id);
        page.IsHomePage.ShouldBeTrue();

        var pageSetAsHomePageAsFalse = await pageRepository.GetAsync(testData.Page_2_Id);
        pageSetAsHomePageAsFalse.IsHomePage.ShouldBeFalse();
    }

    [Fact]
    public async Task SetHomePageAsync_ShouldThrowException_WhenMultipleHomePageExist()
    {
        await WithUnitOfWorkAsync(async () =>
        {
            var page1 = await pageRepository.GetAsync(testData.Page_1_Id);
            var page2 = await pageRepository.GetAsync(testData.Page_2_Id);

            page1.SetIsHomePage(true);
            page2.SetIsHomePage(true);

            await pageRepository.UpdateManyAsync(new[] { page1, page2 }, autoSave: true);

            await Assert.ThrowsAsync<BusinessException>(async () => await pageManager.SetHomePageAsync(page1));
        });
    }
}