using System;
using System.Linq;
using System.Net;
using System.Threading.Tasks;
using API.Models;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Simple.OData.Client;

namespace API.Client.Test {
    [TestClass]
    public class OdataTests {

        private const string TEST_CASE_IDENTIFIER = "TESTCASE";
        private static Song testSong;
        

        [ClassInitialize]
        public static async Task TestInitialize(TestContext tc) {
            var client = new Client();
            var newSong = new Song {
                Name = Guid.NewGuid().ToString(),
                Text = TEST_CASE_IDENTIFIER
            };

            testSong = await client.Post(newSong);
        }

        [ClassCleanup]
        public static async Task ClassCleanup() {
            var client = new Client();
            var itemsToDelete = await client.Get(_ => _.Text == TEST_CASE_IDENTIFIER);
            foreach (var item in itemsToDelete) {
                await client.Delete(item.ID);
            }
        }

        [TestMethod]
        public async Task GetList() {
            var client = new Client();
            var data = await client.Get();

            Assert.IsTrue(data.Any(_=>_.ID == testSong.ID));
        }

        [TestMethod]
        public async Task GetItem() {
            var client = new Client();
            var item = await client.Get(testSong.ID);

            Assert.AreEqual(testSong.Name, item.Name);
        }

        [TestMethod]
        public async Task PostItem() {
            var client = new Client();
            var newSong = new Song {
                Name = Guid.NewGuid().ToString(),
                Text = TEST_CASE_IDENTIFIER
            };

            var response = await client.Post(newSong);
            var insertedSong = await client.Get(response.ID);

            Assert.AreEqual(newSong.Name, insertedSong.Name);
        }

        [TestMethod]
        public async Task DeleteItem() {
            var client = new Client();
            var newSong = new Song {
                Name = Guid.NewGuid().ToString(),
                Text = TEST_CASE_IDENTIFIER
            };

            var response = await client.Post(newSong);
            var insertedSong = await client.Get(response.ID);
            Assert.AreEqual(newSong.Name, insertedSong.Name);

            var count = await client.Delete(response.ID);
            Assert.AreEqual(1, count);

            try {
                await client.Get(response.ID);
                Assert.Fail("WebRequestException not thrown");
            } catch (WebRequestException ex) {
                Assert.AreEqual(HttpStatusCode.NotFound, ex.Code);
            }

        }


    }
}