#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()
{
    firstName_ = firstName;
    lastName_ = lastName;
    sellerNo_ = sellerNo;
    numArticlesOffered_ = numArticlesOffered;
}

void Seller::setSellerNo(int seller_no) { sellerNo_ = seller_no; id_ = seller_no;}

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

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

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

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

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

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

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

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

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

    return selNoStr.str();
    ;
}

std::vector<Article*> Seller::getArticles(bool onlySold) const
{
    std::vector<Article*> articles;
    for (const auto& article : 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(articles_.begin(), articles_.end(), [&uuidString](const auto& art) {
        return art->getUuidAsString() == uuidString;
    });
    if (iter == articles_.end())
        return nullptr;
    return (*iter).get();
}

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

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

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

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

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

int Seller::sumInCents()
{
    int sum = std::accumulate(articles_.begin(), 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.sellerNo_ < re.sellerNo_; }
bool operator<(const std::unique_ptr<Seller>& li, const std::unique_ptr<Seller>& re)
{
    return li->sellerNo_ < re->sellerNo_;
}