using System.IO;
using ivf_tl_Operate.Helpers;
using Xunit;

namespace ivf_tl_Operate.Tests
{
    public class SharedConfigStoreTests
    {
        private static string TempFile() =>
            Path.Combine(Path.GetTempPath(), "tl-shared-test-" + Path.GetRandomFileName() + ".config");

        [Fact]
        public void Read_missing_file_returns_null()
        {
            var path = TempFile();
            Assert.Null(SharedConfigStore.Read(path, "urlIp"));
        }

        [Fact]
        public void Write_then_Read_roundtrips()
        {
            var path = TempFile();
            try
            {
                SharedConfigStore.Write(path, "urlIp", "http://10.0.0.5");
                SharedConfigStore.Write(path, "urlPort", "10010");
                Assert.Equal("http://10.0.0.5", SharedConfigStore.Read(path, "urlIp"));
                Assert.Equal("10010", SharedConfigStore.Read(path, "urlPort"));
            }
            finally { File.Delete(path); }
        }

        [Fact]
        public void Write_existing_key_updates_value()
        {
            var path = TempFile();
            try
            {
                SharedConfigStore.Write(path, "mqttIp", "192.168.0.108");
                SharedConfigStore.Write(path, "mqttIp", "192.168.0.200");
                Assert.Equal("192.168.0.200", SharedConfigStore.Read(path, "mqttIp"));
            }
            finally { File.Delete(path); }
        }

        [Fact]
        public void Written_file_is_appSettings_fragment()
        {
            var path = TempFile();
            try
            {
                SharedConfigStore.Write(path, "kfkaIP", "192.168.0.108");
                var text = File.ReadAllText(path);
                Assert.Contains("<appSettings>", text);
                Assert.Contains("key=\"kfkaIP\"", text);
            }
            finally { File.Delete(path); }
        }
    }
}