#include "SymbolicLink.h"

#include <stdexcept>

#include "Directory.h"
#include "Utilities.h"

SymbolicLink::SymbolicLink(const std::string &name, Directory* parent,
    const std::vector<std::string> &pathVector) : File(name, parent), pathVector(pathVector) {

    // checks if the file exists.
    getFile();
}

File& SymbolicLink::operator[](std::list<std::string> path) {
    if (!path.empty()) {
        throw std::runtime_error(Utilities::FileNotFoundMsg());
    }

    return *this;
}

const File& SymbolicLink::operator[](std::list<std::string> path) const {
    if (!path.empty()) {
        throw std::runtime_error(Utilities::FileNotFoundMsg());
    }

    return *this;
}

std::unique_ptr<Action> SymbolicLink::CreateReadAction(ReadRequest& request) const {
    return getFile().CreateReadAction(request);
}

std::unique_ptr<Action> SymbolicLink::CreateWriteAction(WriteRequest& request) {
    return getFile().CreateWriteAction(request);
}


std::unique_ptr<Action> SymbolicLink::CreateSearchAction(SearchRequest &request) const
{
    if (!request.comesFromCreateSearchAction)
    {
        return getFile().CreateSearchAction(request);
    }

    return nullptr;
}

TextFile& SymbolicLink::getFile() const {
    Directory* root = this->getParent();
    while (root->getParent() != nullptr) {
        root = root->getParent();
    }

    try {
        TextFile& textFile = dynamic_cast<TextFile&>((*root)[pathVector]);
        return textFile;
    } catch (const std::bad_cast&) { // TODO: make sure
        throw std::runtime_error(Utilities::TypeErrorMsg());
    } catch (...) {
        throw std::runtime_error(Utilities::BrokenLinkMsg());
    }
}