vector<string> SplitIntoWords(const string_view text) {
    vector<string> words;
    string word;
    for (const char c : text) {
        if (c == ' ') {
            if (!word.empty()) {
                words.push_back(word);
                word.clear();
            }
        } else {
            word += c;
        }
    }
    if (!word.empty()) {
        words.push_back(word);
    }
    return words;
}

vector<string_view> SearchServer::SplitIntoWordsNoStop(const string_view text) const {
    vector<string_view> words;
    for (const string_view word : SplitIntoWords(text)) {
        if (!IsStopWord(word)) {
            words.push_back(word);
        }
        cout << "word_SplitIntoWordsNoStop = " << word << endl;
    }
    return words;
}

void SearchServer::AddDocument(int document_id, const string_view document, DocumentStatus status,
    const vector<int>& ratings) {
    if (documents_.count(document_id) > 0) {
        throw invalid_argument("Документ с таким id уже существует."s);
    }
    else if (document_id < 0) {
        throw invalid_argument("Документ не может иметь отрицательный id."s);
    }
    else if (!IsValidWord(document)) {
        throw invalid_argument("Содержимое документа содержит недопустимые символы"s);
    }
    const vector<string_view> words = SplitIntoWordsNoStop(document);
    //words_in_documents_[document_id] = words;
    const double inv_word_count = 1.0 / words.size();
    for (const string_view word : words) {
        cout << "word_ADD = " << word << endl;
        word_to_document_freqs_[string(word)][document_id] += inv_word_count;
        //words_in_documents_[document_id].push_back(word);
        word_frequencies_in_document_[document_id][word] += inv_word_count;
    }
    documents_.emplace(document_id, DocumentData{ ComputeAverageRating(ratings), status });
    order_addition_document_.insert(document_id);
}