using System;
using NUnit.Framework;
using PorygonSharp;
using PorygonSharp.UserData;
using PorygonSharp.Utilities;

namespace PorygonSharpTests
{
    public class Tests
    {
        [Test]
        public void Test1()
        {
            using (var script = new Script("true"))
            {
                var diags = script.Diagnostics.GetDiagnostics();
                foreach (var diag in diags)
                {
                    throw new Exception(diag.GetCode().ToString());
                }
                Assert.False(script.Diagnostics.HasErrors());
            }
        }
        [Test]
        public void Test2()
        {
            using (var script = new Script("1+true"))
            {
                Assert.True(script.Diagnostics.HasErrors());
            }
        }

        [Test]
        public void Test3()
        {
            using (var script = new Script("1+10"))
            {
                script.Evaluate();
                var lastVal = script.GetLastValue();
                Assert.AreEqual(TypeClass.Number, lastVal.GetTypeClass());
                var val = lastVal.EvaluateInteger();
                Assert.AreEqual(11, val);
            }
        }

        [Test]
        public void Test4()
        {
            using (var script = new Script("1+10.24"))
            {
                script.Evaluate();
                var lastVal = script.GetLastValue();
                Assert.AreEqual(TypeClass.Number, lastVal.GetTypeClass());
                var val = lastVal.EvaluateFloat();
                Assert.AreEqual(11.24d, val, 5);
            }
        }

        [Test]
        public void Test5()
        {
            using (var script = new Script("true and true"))
            {
                script.Evaluate();
                var lastVal = script.GetLastValue();
                Assert.AreEqual(TypeClass.Bool, lastVal.GetTypeClass());
                var val = lastVal.EvaluateBool();
                Assert.AreEqual(true, val);
            }
        }

        [Test]
        public void Test6()
        {
            using (var script = new Script("'foo' + 'bar'"))
            {
                script.Evaluate();
                var lastVal = script.GetLastValue();
                Assert.AreEqual(TypeClass.String, lastVal.GetTypeClass());
                var val = lastVal.EvaluateString();
                Assert.AreEqual("foobar", val);
            }
        }

        [Test]
        public void Test7()
        {
            using (var script = new Script("a = 100 + 50"))
            {
                script.Evaluate();
                var variable = script.GetVariable("a");
                Assert.AreEqual(TypeClass.Number, variable.GetTypeClass());
                var val = variable.EvaluateInteger();
                Assert.AreEqual(150, val);
            }
        }

        [Test]
        public void Test8()
        {
            using (var script = new Script("function add(number a, number b) result = a + b end"))
            {
                script.Evaluate();
                script.CallFunction("add", 100, 50);
                var variable = script.GetVariable("result");
                Assert.AreEqual(TypeClass.Number, variable.GetTypeClass());
                var val = variable.EvaluateInteger();
                Assert.AreEqual(150, val);
            }
        }

        private class UserDataTestObject
        {
            public int Foo = 200;
        }

        [Test]
        public void Test9()
        {
            UserDataHandler.RegisterType("testObject", typeof(UserDataTestObject));
            using (var script = Script.CreateScript(@"
function test(testObject v)
    result = v['Foo']
end
"))
            {
                var diags = script.Diagnostics.GetDiagnostics();
                foreach (var diag in diags)
                {
                    throw new Exception(diag.GetCode().ToString());
                }

                script.Evaluate();

                script.CallFunction("test", new UserDataTestObject());
                var variable = script.GetVariable("result");
                Assert.AreEqual(200, variable.EvaluateInteger());
            }
        }

        [Test]
        public void Test10()
        {
            UserDataHandler.RegisterType("testObject", typeof(UserDataTestObject));
            using (var script = Script.CreateScript(@"
function test(testObject v)
    v['Foo'] = 20000
end
"))
            {
                var diags = script.Diagnostics.GetDiagnostics();
                foreach (var diag in diags)
                {
                    throw new Exception(diag.GetCode().ToString());
                }

                script.Evaluate();

                var parameter = new UserDataTestObject();
                script.CallFunction("test", parameter);
                Assert.AreEqual(20000, parameter.Foo);
            }
        }

        [Test]
        public void TestHash()
        {
            var hash = HashedString.ScriptHash("Foo");
            Assert.AreEqual(193501609, hash);
        }
    }
}