#include "BuildMoves.hpp"
#include <fstream>
#include <iostream>
#include "json.hpp"
using json = nlohmann::json;

#define GET(o, objectKey, key)                                                                                         \
    auto& _##objectKey = o[#objectKey];                                                                                 \
    if (_##objectKey.is_null()) {                                                                                      \
        auto errorKeyFunc = [=]() { return key; };                                                                     \
        std::cout << "Failed to retrieve key '" << #objectKey << "' for object with key '" << errorKeyFunc()           \
                  << path << "'\n";                                                                                    \
        return nullptr;                                                                                                \
    }

static PkmnLib::Library::MoveCategory ParseCategory(const std::string& input) {
    if (input == "physical")
        return PkmnLib::Library::MoveCategory::Physical;
    else if (input == "special")
        return PkmnLib::Library::MoveCategory::Special;
    else if (input == "status")
        return PkmnLib::Library::MoveCategory::Status;
    std::cout << "Invalid move category '" << input << ".\n";
    return static_cast<PkmnLib::Library::MoveCategory>(255);
}

PkmnLib::Library::MoveLibrary* BuildMoves::Build(const std::string& path,
                                                 const CreatureLib::Library::TypeLibrary* types) {
    std::ifstream fileStream(path.c_str());
    if (fileStream.fail()) {
        std::cout << "Failed to load Move data file at '" << path << "'\n";
        return nullptr;
    }
    auto lib = new PkmnLib::Library::MoveLibrary();
    json j;
    fileStream >> j;
    for (const auto& i : j["data"].items()) {
        auto& val = i.value();
        GET(val, name, i);
        GET(val, type, i);
        GET(val, power, i);
        GET(val, pp, i);
        GET(val, accuracy, i);
        GET(val, priority, i);
        GET(val, target, i);
        GET(val, category, i);
        GET(val, flags, i);
        if (_pp.get<uint8_t>() == 0)
            continue;
        auto type = types->GetTypeId(ArbUt::StringView(_type.get<std::string>().c_str()));
        auto category = ParseCategory(_category.get<std::string>());
        if (static_cast<int>(category) == 255)
            return nullptr;
        CreatureLib::Library::AttackTarget target;
        if (!CreatureLib::Library::AttackTargetHelper::TryParse(_target.get<std::string>().c_str(), target)) {
            std::cout << "Invalid target: '" << _target.get<std::string>() << "' for move with name '"
                      << _name.get<std::string>() << "'\n";
            return nullptr;
        }
        auto flags = std::unordered_set<uint32_t>();
        for (auto& flagIndex : _flags.items()) {
            flags.insert(ArbUt::StringView(flagIndex.value().get<std::string>().c_str()));
        }
        CreatureLib::Library::SecondaryEffect* effect = nullptr;
        auto& jsonEffect = val["effect"];
        if (jsonEffect != nullptr) {
            auto& name = jsonEffect["name"];
            auto& chanceJson = jsonEffect["chance"];
            auto& parametersJson = jsonEffect["parameters"];
            if (name != nullptr) {
                ArbUt::List<CreatureLib::Library::EffectParameter*> parameters;
                auto chance = -1.0f;
                if (chanceJson != nullptr) {
                    chance = chanceJson.get<float>();
                }

                if (parametersJson != nullptr) {
                    for (auto& kv : parametersJson.items()) {
                        auto& p = kv.value();
                        auto t = p.type();
                        switch (t) {
                            case json::value_t::boolean:
                                parameters.Append(new CreatureLib::Library::EffectParameter(p.get<bool>()));
                                break;
                            case json::value_t::number_integer:
                            case json::value_t::number_unsigned:
                                parameters.Append(new CreatureLib::Library::EffectParameter(p.get<int64_t>()));
                                break;
                            case json::value_t::number_float:
                                parameters.Append(new CreatureLib::Library::EffectParameter(p.get<float>()));
                                break;
                            default: continue;
                        }
                    }
                }
                effect = new CreatureLib::Library::SecondaryEffect(
                    chance, ArbUt::StringView(name.get<std::string>().c_str()), parameters);
            }
        }
        if (effect == nullptr) {
            effect = new CreatureLib::Library::SecondaryEffect();
        }

        auto move = new PkmnLib::Library::MoveData(ArbUt::StringView(_name.get<std::string>().c_str()), type, category,
                                                   _power.get<uint8_t>(), _accuracy.get<uint8_t>(), _pp.get<uint8_t>(),
                                                   target, _priority.get<int8_t>(), effect, flags);

        lib->Insert(ArbUt::StringView(move->GetName().c_str()), move);
    }

    return lib;
}

#undef GET