// ==========================================================================
//  Squidex Headless CMS
// ==========================================================================
//  Copyright (c) Squidex UG (haftungsbeschraenkt)
//  All rights reserved. Licensed under the MIT license.
// ==========================================================================

using Squidex.ClientLibrary.Management;
using TestSuite.Fixtures;

#pragma warning disable SA1300 // Element should begin with upper-case letter
#pragma warning disable SA1507 // Code should not contain multiple blank lines in a row

namespace TestSuite.ApiTests
{
    [UsesVerify]
    public sealed class AppLanguagesTests : IClassFixture<ClientFixture>
    {
        private readonly string appName = Guid.NewGuid().ToString();

        public ClientFixture _ { get; }

        public AppLanguagesTests(ClientFixture fixture)
        {
            _ = fixture;
        }

        [Fact]
        public async Task Should_add_language()
        {
            // STEP 0: Add app.
            await CreateAppAsync();


            // STEP 1: Add languages.
            await AddLanguageAsync("de");
            await AddLanguageAsync("it");

            var languages_1 = await _.Apps.GetLanguagesAsync(appName);

            Assert.Equal(new string[] { "en", "de", "it" }, languages_1.Items.Select(x => x.Iso2Code).ToArray());

            await Verify(languages_1);
        }

        [Fact]
        public async Task Should_add_custom_language()
        {
            // STEP 0: Add app.
            await CreateAppAsync();


            // STEP 1: Add languages.
            await AddLanguageAsync("abc");
            await AddLanguageAsync("xyz");

            var languages_1 = await _.Apps.GetLanguagesAsync(appName);

            Assert.Equal(new string[] { "en", "abc", "xyz" }, languages_1.Items.Select(x => x.Iso2Code).ToArray());

            await Verify(languages_1);
        }

        [Fact]
        public async Task Should_update_language()
        {
            // STEP 0: Add app.
            await CreateAppAsync();


            // STEP 1: Add languages.
            await AddLanguageAsync("de");
            await AddLanguageAsync("it");


            // STEP 3: Update German language.
            var updateRequest = new UpdateLanguageDto
            {
                Fallback = new List<string>
                {
                    "it"
                },
                IsOptional = true
            };

            var languages_2 = await _.Apps.PutLanguageAsync(appName, "de", updateRequest);
            var language_2_DE = languages_2.Items.Find(x => x.Iso2Code == "de");

            Assert.Equal(updateRequest.Fallback, language_2_DE.Fallback);
            Assert.Equal(updateRequest.IsOptional, language_2_DE.IsOptional);

            await Verify(languages_2);
        }

        [Fact]
        public async Task Should_update_master_language()
        {
            // STEP 0: Add app.
            await CreateAppAsync();


            // STEP 1: Add languages.
            await AddLanguageAsync("de");
            await AddLanguageAsync("it");


            // STEP 2: Update Italian language.
            var updateRequest = new UpdateLanguageDto
            {
                Fallback = new List<string>
                {
                    "de"
                },
                IsOptional = true
            };

            await _.Apps.PutLanguageAsync(appName, "it", updateRequest);


            // STEP 3: Change master language to Italian.
            var masterRequest = new UpdateLanguageDto
            {
                IsMaster = true
            };

            var languages_4 = await _.Apps.PutLanguageAsync(appName, "it", masterRequest);
            var language_4_IT = languages_4.Items.Find(x => x.Iso2Code == "it");
            var language_4_EN = languages_4.Items.Find(x => x.Iso2Code == "en");

            Assert.True(language_4_IT.IsMaster);

            // Old master language is unset.
            Assert.False(language_4_EN.IsMaster);

            // Master language cannot be optional.
            Assert.False(language_4_IT.IsOptional);

            // Fallback for new master language must be removed.
            Assert.Empty(language_4_IT.Fallback);

            await Verify(languages_4);
        }

        [Fact]
        public async Task Should_delete_language()
        {
            // STEP 0: Add app.
            await CreateAppAsync();


            // STEP 1: Add languages.
            await AddLanguageAsync("de");
            await AddLanguageAsync("it");


            // STEP 2: Update Italian language.
            var updateRequest = new UpdateLanguageDto
            {
                Fallback = new List<string>
                {
                    "de"
                },
                IsOptional = true
            };

            await _.Apps.PutLanguageAsync(appName, "it", updateRequest);


            // STEP 3: Remove language.
            var languages_2 = await _.Apps.DeleteLanguageAsync(appName, "de");
            var language_2_IT = languages_2.Items.Find(x => x.Iso2Code == "it");

            // Fallback language must be removed.
            Assert.Empty(language_2_IT.Fallback);

            Assert.Equal(new string[] { "en", "it" }, languages_2.Items.Select(x => x.Iso2Code).ToArray());

            await Verify(languages_2);
        }

        private async Task CreateAppAsync()
        {
            var createRequest = new CreateAppDto
            {
                Name = appName
            };

            await _.Apps.PostAppAsync(createRequest);
        }

        private async Task AddLanguageAsync(string code)
        {
            var createRequest = new AddLanguageDto
            {
                Language = code
            };

            await _.Apps.PostLanguageAsync(appName, createRequest);
        }
    }
}