using F4SD.DocuEngine.DocuEngineDataProvider;
using F4SD.DocuEngine.DocuEngineParser.Exceptions;
using System.ComponentModel;
using System.Linq;

namespace F4SD.DocuEngine.DocuEngineParser.ContentBlock
{
    internal partial class ContentBlock
    {
        private void ParseForeachCommand(ref int index)
        {
            string variableName = "";
            string enumName = "";
            int tempIndex = 0;

            SkipWhiteSpace(ref index);
            variableName += ParseVariableName(ref index);
            SkipWhiteSpace(ref index);
            if (!(DocuTemplate.ElementAtOrDefault(index).Equals(';')))
            {
                throw new SyntaxErrorException(";", DocuTemplate.ElementAtOrDefault(index).ToString());
            }
            index++;
            SkipWhiteSpace(ref index);
            enumName += ParseVariableName(ref index);
            SkipWhiteSpace(ref index);
            if (!(DocuTemplate.ElementAtOrDefault(index).Equals(')')))
            {
                throw new SyntaxErrorException(")", DocuTemplate.ElementAtOrDefault(index).ToString());
            }
            index++;
            SkipWhiteSpace(ref index);
            if (!DocuTemplate.Substring(index, 2).Equals("{{"))
            {
                throw new SyntaxErrorException("{{", DocuTemplate.Substring(index, 2));
            }
            index += 2;
            IDocuEngineDataEnumeration enumeration = Container.GetEnumerationByName(enumName);
            if (enumeration == null)
            {
                //Syntax Error
            }
            tempIndex = index;
            foreach (var token in enumeration)
            {
                index = tempIndex;
                ContentBlock foreachBlock = new ContentBlock(DocuTemplate, new DocuEngineDataContainer() { { variableName, token } });
                parsingContext.Append(foreachBlock.ParseContentBlock(ref index));
            }
        }
    }
}