using Shouldly;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

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>();
        }

        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);
        }

        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();
        }

        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);
        }

        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();
        }
    }
}