using Microsoft.VisualStudio.TestTools.UnitTesting;
using System;
using System.Collections.Generic;

namespace IrcTokens.Tests
{
    [TestClass]
    public class Format
    {
        [TestMethod]
        public void TestTags()
        {
            var line = new Line
            {
                Command = "PRIVMSG",
                Params = new List<string> { "#channel", "hello" },
                Tags = new Dictionary<string, string> { { "id", "\\" + " " + ";" + "\r\n" } }
            }.Format();

            Assert.AreEqual("@id=\\\\\\s\\:\\r\\n PRIVMSG #channel hello", line);
        }

        [TestMethod]
        public void TestMissingTag()
        {
            var line = new Line
            {
                Command = "PRIVMSG",
                Params = new List<string> { "#channel", "hello" }
            }.Format();

            Assert.AreEqual("PRIVMSG #channel hello", line);
        }

        [TestMethod]
        public void TestNullTag()
        {
            var line = new Line
            {
                Command = "PRIVMSG",
                Params = new List<string> { "#channel", "hello" },
                Tags = new Dictionary<string, string> { { "a", null } }
            }.Format();

            Assert.AreEqual("@a PRIVMSG #channel hello", line);
        }

        [TestMethod]
        public void TestEmptyTag()
        {
            var line = new Line
            {
                Command = "PRIVMSG",
                Params = new List<string> { "#channel", "hello" },
                Tags = new Dictionary<string, string> { { "a", "" } }
            }.Format();

            Assert.AreEqual("@a PRIVMSG #channel hello", line);
        }

        [TestMethod]
        public void TestSource()
        {
            var line = new Line
            {
                Command = "PRIVMSG",
                Params = new List<string> { "#channel", "hello" },
                Source = "nick!user@host"
            }.Format();

            Assert.AreEqual(":nick!user@host PRIVMSG #channel hello", line);
        }

        [TestMethod]
        public void TestCommandLowercase()
        {
            var line = new Line { Command = "privmsg" }.Format();
            Assert.AreEqual("privmsg", line);
        }

        [TestMethod]
        public void TestCommandUppercase()
        {
            var line = new Line { Command = "PRIVMSG" }.Format();
            Assert.AreEqual("PRIVMSG", line);
        }

        [TestMethod]
        public void TestTrailingSpace()
        {
            var line = new Line
            {
                Command = "PRIVMSG",
                Params = new List<string> { "#channel", "hello world" }
            }.Format();

            Assert.AreEqual("PRIVMSG #channel :hello world", line);
        }

        [TestMethod]
        public void TestTrailingNoSpace()
        {
            var line = new Line
            {
                Command = "PRIVMSG",
                Params = new List<string> { "#channel", "helloworld" }
            }.Format();

            Assert.AreEqual("PRIVMSG #channel helloworld", line);
        }

        [TestMethod]
        public void TestTrailingDoubleColon()
        {
            var line = new Line
            {
                Command = "PRIVMSG",
                Params = new List<string> { "#channel", ":helloworld" }
            }.Format();

            Assert.AreEqual("PRIVMSG #channel ::helloworld", line);
        }

        [TestMethod]
        public void TestInvalidNonLastSpace()
        {
            Assert.ThrowsException<ArgumentException>(() =>
            {
                new Line
                {
                    Command = "USER",
                    Params = new List<string> { "user", "0 *", "real name" }
                }.Format();
            });
        }

        [TestMethod]
        public void TestInvalidNonLastColon()
        {
            Assert.ThrowsException<ArgumentException>(() =>
            {
                new Line
                {
                    Command = "PRIVMSG",
                    Params = new List<string> { ":#channel", "hello" }
                }.Format();
            });
        }
    }
}