#include "concordia/tokenized_sentence.hpp"
#include "concordia/common/text_utils.hpp"

#include <iostream>
#include <boost/foreach.hpp>

TokenizedSentence::TokenizedSentence(std::string sentence):
                                         _sentence(sentence) {
}

TokenizedSentence::~TokenizedSentence() {
}

void TokenizedSentence::addAnnotations(
                            std::vector<TokenAnnotation> annotations) {
    std::vector<TokenAnnotation>::iterator newAnnotation =
                                           annotations.begin();
    std::list<TokenAnnotation>::iterator existingAnnotation =
                                           _tokenAnnotations.begin();

    while (newAnnotation != annotations.end()) {
        if (existingAnnotation != _tokenAnnotations.end()) {
            // there are still some existing annotations, so perform checks
            if (newAnnotation->intersects(*existingAnnotation)) {
                // The new annotation intersects with the existing.
                // We can not add it, so let us just move on to the
                // next new annoation.
                ++newAnnotation;
            } else {
                // it is now important whether the new interval is before
                // or after existing
                if (newAnnotation->getStart() <
                             existingAnnotation->getStart()) {
                    // New interval does not intersect and is
                    // before existing. We add it.
                    _tokenAnnotations.insert(existingAnnotation,
                                             *newAnnotation);
                    ++newAnnotation;
                } else {
                    // If the new interval is after existing
                    // we move to the next existing annoation.
                    ++existingAnnotation;
                }
            }
        } else {
            // no more existing annotations, so just add the new annotation
            _tokenAnnotations.push_back(*newAnnotation);
            ++newAnnotation;
        }
    }
}

void TokenizedSentence::toLowerCase() {
    _sentence = TextUtils::getInstance().toLowerCase(_sentence);
}

void TokenizedSentence::generateHash(boost::shared_ptr<WordMap> wordMap) {
    BOOST_FOREACH(TokenAnnotation annotation, _tokenAnnotations) {
        if (annotation.getType() == TokenAnnotation::WORD ||
               annotation.getType() == TokenAnnotation::NE) {
            _codes.push_back(wordMap->getWordCode(annotation.getValue()));
            _tokens.push_back(annotation);
        }
    }
}

void TokenizedSentence::generateTokens() {
    BOOST_FOREACH(TokenAnnotation annotation, _tokenAnnotations) {
        if (annotation.getType() == TokenAnnotation::WORD ||
               annotation.getType() == TokenAnnotation::NE) {
            _tokens.push_back(annotation);
        }
    }
}