private IObservable <IEnumerable <AutocompleteSuggestion> > querySuggestions(
IEnumerable <string> wordsToQuery, AutocompleteSuggestionType suggestionType)
{
var queryListIsEmpty = !wordsToQuery.Any();
switch (suggestionType)
{
case AutocompleteSuggestionType.Projects when queryListIsEmpty:
return(database.Projects.GetAll()
.Select(ProjectSuggestion.FromProjectsPrependingEmpty));
case AutocompleteSuggestionType.Projects:
return(wordsToQuery
.Aggregate(database.Projects.GetAll(), (obs, word) => obs.Select(filterProjectsByWord(word)))
.Select(ProjectSuggestion.FromProjects));
case AutocompleteSuggestionType.Tags:
return(wordsToQuery
.Aggregate(database.Tags.GetAll(), (obs, word) => obs.Select(filterTagsByWord(word)))
.Select(TagSuggestion.FromTags));
}
if (queryListIsEmpty)
{
return(Observable.Return(QuerySymbolSuggestion.Suggestions));
}
return(wordsToQuery
.Aggregate(database.TimeEntries.GetAll(), (obs, word) => obs.Select(filterTimeEntriesByWord(word)))
.Select(TimeEntrySuggestion.FromTimeEntries));
}
public IObservable <IEnumerable <AutocompleteSuggestion> > Query(string queryText, AutocompleteSuggestionType suggestionType)
{
var wordsToQuery = queryText.Split(' ').Where(word => !string.IsNullOrEmpty(word)).Distinct();
return(querySuggestions(wordsToQuery, suggestionType));
}
public QueryInfo(string text, AutocompleteSuggestionType suggestionType)
{
Text = text;
SuggestionType = suggestionType;
}
