#include "seller.h"
#include "utils.h"

#include <iomanip>
#include <numeric>
#include <sstream>

Seller::Seller(const std::string &firstName, const std::string &lastName, int sellerNo,
               int numArticlesOffered)
    : EntityInt(sellerNo)
{
    m_firstName = firstName;
    m_lastName = lastName;
    m_numArticlesOffered = numArticlesOffered;
}

void Seller::setSellerNo(int seller_no) { setId(seller_no); }

void Seller::setFirstName(const std::string &firstName) { m_firstName = firstName; }

void Seller::setLastName(const std::string &lastName) { m_lastName = lastName; }

void Seller::setNumArticlesOffered(int number) { m_numArticlesOffered = number; }

void Seller::addArticle(std::unique_ptr<Article> article)
{
    article->setSeller(this);
    m_articles.push_back(std::move(article));
}

std::string Seller::getFirstName() const { return m_firstName; }

std::string Seller::getLastName() const { return m_lastName; }

int Seller::getSellerNo() const { return getId(); }

std::string Seller::getSellerNoAsString() const
{
    std::stringstream selNoStr;

    selNoStr << std::setfill('0') << std::setw(3) << m_id;

    return selNoStr.str();
    ;
}

std::vector<Article *> Seller::getArticles(bool onlySold) const
{
    std::vector<Article *> articles;
    for (const auto &article : m_articles) {
        if (onlySold && article->isSold()) {
            articles.push_back(article.get());
        } else if (!onlySold) {
            articles.push_back(article.get());
        }
    }
    return articles;
}

Article *Seller::getArticleByUuid(const std::string &uuidString)
{
    auto iter = std::find_if(m_articles.begin(), m_articles.end(), [&uuidString](const auto &art) {
        return art->getUuidAsString() == uuidString;
    });
    if (iter == m_articles.end())
        return nullptr;
    return (*iter).get();
}

int Seller::numArticlesSold() const { return static_cast<int>(getArticles(true).size()); }

int Seller::numArticlesOffered() const { return m_numArticlesOffered; }

int Seller::getMaxArticleNo() const
{
    auto iter = std::max_element(
        m_articles.begin(), m_articles.end(),
        [](const auto &a, const auto &b) -> bool { return a->getArticleNo() < b->getArticleNo(); });
    if (iter == m_articles.end())
        return 0;
    return (*iter)->getArticleNo();
}

void Seller::cleanupArticles()
{
    m_articles.erase(std::remove_if(m_articles.begin(), m_articles.end(),
                                   [](const auto &article) {
                                       return article->getState() == Article::State::DELETE;
                                   }),
                    m_articles.end());

    for (auto &article : m_articles) {
        article->setState(Article::State::OK);
    }
}

int Seller::sumInCents()
{
    int sum = std::accumulate(m_articles.begin(), m_articles.end(), 0,
                              [](int a, const auto &b) { return a + b->getPrice(); });
    return sum;
}

std::string Seller::sumAsString() { return formatCentAsEuroString(sumInCents()); }

bool operator<(const Seller &li, const Seller &re) { return li.m_id < re.m_id; }
bool operator<(const std::unique_ptr<Seller> &li, const std::unique_ptr<Seller> &re)
{
    return li->m_id < re->m_id;
}