using Elwig.Helpers;
using Elwig.Models.Entities;
using Elwig.Services;
using Elwig.ViewModels;
using Microsoft.EntityFrameworkCore;

namespace Tests.UnitTests.ServiceTests {
    [TestFixture]
    public class PaymentVariantServiceTest {

        private static async Task InitViewModel(PaymentVariantsViewModel vm) {
            using var ctx = new AppDbContext();
        }

        [Test]
        [Ignore("Not implemented yet")]
        public async Task Test_FillInputs() {
            var vm = new PaymentVariantsViewModel();
            await InitViewModel(vm);
            //await vm.FillInputs();
        }

        [Test]
        public async Task Test_CreatePaymentVariant() {
            HashSet<int> ids;
            using (var ctx = new AppDbContext()) {
                ids = await ctx.PaymentVariants.Where(v => v.Year == 2021).Select(v => v.AvNr).ToHashSetAsync();
            }
            PaymentVar? n = null;
            await Assert.DoesNotThrowAsync(async () => {
                n = await PaymentVariantService.CreatePaymentVariant(2021);
            });
            Assert.That(ids, Does.Not.Contain(n?.AvNr));
            using (var ctx = new AppDbContext()) {
                Assert.IsNotNull(await ctx.PaymentVariants.FindAsync(2021, n?.AvNr));
            }
        }

        [Test]
        public async Task Test_Duplicate() {
            HashSet<int> ids;
            using (var ctx = new AppDbContext()) {
                ids = await ctx.PaymentVariants.Where(v => v.Year == 2021).Select(v => v.AvNr).ToHashSetAsync();
            }
            Assert.That(ids, Does.Contain(4));
            PaymentVar? n = null;
            using (var ctx = new AppDbContext()) {
                var v = await ctx.PaymentVariants.FindAsync(2021, 4);
                await Assert.DoesNotThrowAsync(async () => {
                    n = await PaymentVariantService.Duplicate(v!);
                });
            }
            Assert.That(ids, Does.Not.Contain(n?.AvNr));
            using (var ctx = new AppDbContext()) {
                Assert.IsNotNull(await ctx.PaymentVariants.FindAsync(2021, n?.AvNr));
            }
        }

        [Test]
        [Ignore("Not implemented yet")]
        public async Task Test_UpdatePaymentVariant() {
            var vm = new PaymentVariantsViewModel();
            await InitViewModel(vm);
            //await vm.UpdatePaymentVariant();
        }

        [Test]
        public async Task Test_DeletePaymentVariant() {
            using (var ctx = new AppDbContext()) {
                Assert.IsNotNull(await ctx.PaymentVariants.FindAsync(2021, 3));
            }
            await Assert.DoesNotThrowAsync(async () => await PaymentVariantService.DeletePaymentVariant(2021, 3));
            using (var ctx = new AppDbContext()) {
                Assert.IsNull(await ctx.PaymentVariants.FindAsync(2021, 3));
            }
        }

        [Test]
        public async Task Test_Calculate_Commit_Revert() {
            await Assert.DoesNotThrowAsync(async () => {
                await PaymentVariantService.Calculate(2021, 2);
                await PaymentVariantService.Commit(2021, 2);
                await PaymentVariantService.Revert(2021, 2);
            });
        }

        [Test]
        public async Task TestGenerate_Summary_List() {
            var filename = Path.Combine(Path.GetTempPath(), "PaymentVariant.ods");
            Assert.That(!File.Exists(filename));
            InteractionService.NextSave = (_, _) => filename;
            try {
                using var ctx = new AppDbContext();
                var v = await ctx.PaymentVariants.Where(v => v.Year == 2021 && v.AvNr == 2).SingleAsync();
                await PaymentVariantService.GenerateSummary(v, ExportMode.SaveList);
                using (Assert.EnterMultipleScope()) {
                    Assert.IsNull(InteractionService.NextSave);
                    Assert.That(File.Exists(filename));
                    Assert.That(new FileInfo(filename).Length, Is.GreaterThan(0));
                }
            } finally {
                File.Delete(filename);
            }
        }

        [Test]
        public async Task TestGenerate_Summary_Pdf() {
            var filename = Path.Combine(Path.GetTempPath(), "PaymentVariant.pdf");
            Assert.That(!File.Exists(filename));
            InteractionService.NextSave = (_, _) => filename;
            try {
                using var ctx = new AppDbContext();
                var v = await ctx.PaymentVariants.Where(v => v.Year == 2021 && v.AvNr == 2).SingleAsync();
                await PaymentVariantService.GenerateSummary(v, ExportMode.SavePdf);
                using (Assert.EnterMultipleScope()) {
                    Assert.IsNull(InteractionService.NextSave);
                    Assert.That(File.Exists(filename));
                    Assert.That(new FileInfo(filename).Length, Is.GreaterThan(0));
                }
            } finally {
                File.Delete(filename);
            }
        }

        [Test]
        public async Task TestGenerate_Ebics() {
            var filename = Path.Combine(Path.GetTempPath(), "PaymentVariant.xml");
            Assert.That(!File.Exists(filename));
            InteractionService.NextSave = (_, _) => filename;
            try {
                await PaymentVariantService.GenerateEbics(2021, 2);
                using (Assert.EnterMultipleScope()) {
                    Assert.IsNull(InteractionService.NextSave);
                    Assert.That(File.Exists(filename));
                    Assert.That(new FileInfo(filename).Length, Is.GreaterThan(0));
                }
            } finally {
                File.Delete(filename);
            }
        }

        [Test]
        public async Task TestGenerate_AccountingList() {
            var filename = Path.Combine(Path.GetTempPath(), "PaymentVariant.ods");
            Assert.That(!File.Exists(filename));
            InteractionService.NextSave = (_, _) => filename;
            try {
                using var ctx = new AppDbContext();
                var v = await ctx.PaymentVariants.Where(v => v.Year == 2021 && v.AvNr == 2).SingleAsync();
                await PaymentVariantService.GenerateAccountingList(v.Year, v.AvNr, v.Name);
                using (Assert.EnterMultipleScope()) {
                    Assert.IsNull(InteractionService.NextSave);
                    Assert.That(File.Exists(filename));
                    Assert.That(new FileInfo(filename).Length, Is.GreaterThan(0));
                }
            } finally {
                File.Delete(filename);
            }
        }
    }
}