// pattern: "please give me recipes on #{ingredients} with #{style}"
// slots: {"ingredient1", "ingredient"}
// templates: { "ingredinet": ["potato", "tomato"]}
// see https://github.com/voice-assistant/satori-flow/blob/master/src/matcher/templateIntentMatcher.js#L58
public static Template GenerateTemplate(string pattern, IDictionary <string, string> slots, TypeConfig typeconfig)
{
int startPosition = 0;
int endPosition = 0;
var elements = new List <string>();
var slotNames = new List <string>();
var inBrace = false;
while (endPosition < pattern.Length)
{
if (!inBrace)
{
endPosition = pattern.IndexOf("${", startPosition, StringComparison.Ordinal);
if (endPosition == -1)
{ // no brace
elements.Add(pattern.Substring(startPosition, pattern.Length - startPosition));
break;
}
elements.Add(pattern.Substring(startPosition, endPosition - startPosition));
inBrace = true;
}
else // found slot
{
endPosition = pattern.IndexOf("}", startPosition, StringComparison.Ordinal);
var slotName = pattern.Substring(startPosition + 1, (endPosition - startPosition) - 1);
string typeName = slots[slotName];
var typeElements = typeconfig.Get(typeName);
elements.Add(generateSlotElement(typeElements, slotName));
slotNames.Add(slotName);
inBrace = false;
}
if (endPosition < 0)
{
break;
}
startPosition = endPosition + 1;
}
return(new Template(string.Join("", elements.ToArray()), slotNames));
}