using Upsilon.Evaluator;
using Xunit;

namespace UpsilonTests
{
    public class TableTests
    {
        [Fact]
        public void BasicNumberTable()
        {
            const string input = @"
table = {
    100, 200, 300
}
return table[2]
";
            var script = new Script(input);
            Assert.Empty(script.Diagnostics.Messages);
            var evaluated = script.Evaluate<long>();
            Assert.Empty(script.Diagnostics.Messages);
            Assert.Equal(200, evaluated);
        }

        [Fact]
        public void BasicStringTable()
        {
            const string input = @"
table = {
    test = 100,
    val = 400,
    another = 10_000,
}
return table[""another""]
";
            var script = new Script(input);
            Assert.Empty(script.Diagnostics.Messages);
            var evaluated = script.Evaluate<long>();
            Assert.Empty(script.Diagnostics.Messages);
            Assert.Equal(10_000, evaluated);
        }

        [Fact]
        public void HidesLocalKeys()
        {
            const string input = @"
table = {
    local test = 100,
    val = 400,
    another = 10_000,
}
return table[""test""]
";
            var script = new Script(input);
            Assert.Empty(script.Diagnostics.Messages);
            var evaluated = script.Evaluate();
            Assert.Empty(script.Diagnostics.Messages);
            Assert.Null(evaluated);
        }

        [Fact]
        public void NestedTables()
        {
            const string input = @"
table = {
    {
        {
            100, 600, 900
        },
        {}
    }
}
return table[1][1][2]
";
            var script = new Script(input);
            Assert.Empty(script.Diagnostics.Messages);
            var evaluated = script.Evaluate<long>();
            Assert.Empty(script.Diagnostics.Messages);
            Assert.Equal(600, evaluated);
        }

        [Fact]
        public void FunctionsInTable()
        {
            const string input = @"
table = {
    function() test
        return 100
    end
    val = 400,
    another = 10_000,
}
return table[""test""]()
";
            var script = new Script(input);
            Assert.Empty(script.Diagnostics.Messages);
            var evaluated = script.Evaluate<long>();
            Assert.Empty(script.Diagnostics.Messages);
            Assert.Equal(100, evaluated);
        }

    }
}