public override void MutateState(EmailRenderer renderer)
{
var iteratorParamGroups = renderer._emailParams.Where(x => IsIteratorParam(x.Key))
.Select(x => new { param = x.Key.Prefix("::"), group = x.Key.Suffix("::"), value = x.Value })
.GroupBy(x => x.group);
//this gives us groups of parameters by iteration..
//param = e.g. URL or Person.Name
renderer._outputSb = renderer._finalSb;
foreach (var iteratorParamGroup in iteratorParamGroups)
{
var iteratorRenderer = new EmailRenderer(renderer._config);
var emailParamsForIterator = renderer._emailParams.Concat(iteratorParamGroup
.Select(iteratorParam => new KeyValuePair <string, string>("{0}:Item{1}".FormatWith(_blockName, GetPropertyForIterator(iteratorParam.param)), iteratorParam.value)))
.ToDictionary(x => x.Key, x => x.Value);
var renderedIteration = iteratorRenderer.RenderFromTemplate(_blockTemplate, emailParamsForIterator);
renderer._outputSb.Append(renderedIteration);
}
renderer._iteratorBlock = null;
}
public string RenderFromTemplate(string template, IDictionary <string, string> emailParams)
{
_state = EmailRendererState.Normal;
_emailParams = emailParams;
_outputSb = _finalSb;
foreach (var c in template)
{
switch (_state)
{
case EmailRendererState.Normal:
if (c == '$')
{
_outputSb.Append(_bufferSb.ToString());
_bufferSb.Clear();
_bufferSb.Append(c);
_state = EmailRendererState.BeginParam;
}
else
{
_bufferSb.Append(c);
}
break;
case EmailRendererState.BeginParam:
if (c == '(')
{
_bufferSb.Clear();
_state = EmailRendererState.InParam;
}
else
{
_state = EmailRendererState.Normal;
}
break;
case EmailRendererState.InParam:
if (c == ')')
{
var directive = GetDirective();
directive.MutateState(this);
_bufferSb.Clear();
_state = EmailRendererState.Normal;
}
else
{
_bufferSb.Append(c);
}
break;
}
}
_outputSb.Append(_bufferSb.ToString());
if (_masterTemplateName != null)
{
var masterRenderer = new EmailRenderer(_config, _templateLocator);
var emailParamsCopy = emailParams.ToDictionary(x => x.Key, x => x.Value);
foreach (var placeholder in _placeholderSbs)
{
emailParamsCopy[placeholder.Key] = placeholder.Value.ToString();
}
if (!_placeholderSbs.Any())
{
emailParamsCopy["Placeholder"] = _finalSb.ToString();
}
var masterTemplate = _templateLocator.GetTemplate(_masterTemplateName);
return(masterRenderer.RenderFromTemplate(masterTemplate, emailParamsCopy));
}
return(_outputSb.ToString());
}
