//#include "DynamicCommandAPI.h"
#include "CommandAPI.h"
#include "McAPI.h"
#include "ItemAPI.h"
#include "PlayerAPI.h"
#include "BlockAPI.h"
#include "CommandOriginAPI.h"
#include "CommandOutputAPI.h"
#include <Tools/Utils.h>
#include <Engine/GlobalShareData.h>
#include <Engine/LocalShareData.h>
#include <Engine/EngineOwnData.h>
#include <Utils/STLHelper.h>
#include <RegCommandAPI.h>
#include <filesystem>
#include <Configs.h>
#include <vector>
#include <string>
#include <MC/ItemInstance.hpp>
#include <MC/ItemStack.hpp>
#include <MC/Dimension.hpp>
#include <ScriptEngine/API/BaseAPI.h>
#include <ScriptEngine/API/EntityAPI.h>
#include <magic_enum/magic_enum.hpp>
#include <third-party/Nlohmann/json.hpp>


//////////////////// Class Definition ////////////////////

ClassDefine<void> PermissionStaticBuilder = EnumDefineBuilder<CommandPermissionLevel>::build("PermType");
ClassDefine<void> ParamTypeStaticBuilder = EnumDefineBuilder<DynamicCommand::ParameterType>::build("ParamType");
ClassDefine<void> ParamOptionStaticBuilder = EnumDefineBuilder<CommandParameterOption>::build("ParamOption");

ClassDefine<CommandClass> CommandClassBuilder =
    defineClass<CommandClass>("LLSE_Command")
        .constructor(nullptr)
        .instanceProperty("name", &CommandClass::getName)
        .instanceProperty("registered", &CommandClass::isRegistered)

        .instanceFunction("setEnum", &CommandClass::setEnum)
        .instanceFunction("setAlias", &CommandClass::setAlias)
        //.instanceFunction("newParameter", &CommandClass::newParameter)
        .instanceFunction("mandatory", &CommandClass::mandatory)
        .instanceFunction("optional", &CommandClass::optional)
        .instanceFunction("setSoftEnum", &CommandClass::setSoftEnum)
        .instanceFunction("addSoftEnumValues", &CommandClass::addSoftEnumValues)
        .instanceFunction("removeSoftEnumValues", &CommandClass::removeSoftEnumValues)
        .instanceFunction("getSoftEnumValues", &CommandClass::getSoftEnumValues)
        .instanceFunction("getSoftEnumNames", &CommandClass::getSoftEnumNames)
        .instanceFunction("overload", &CommandClass::addOverload)
        .instanceFunction("setCallback", &CommandClass::setCallback)
        .instanceFunction("setup", &CommandClass::setup)

        .build();

//////////////////// Helper ////////////////////

bool LLSERemoveCmdCallback(script::ScriptEngine* engine) {
    erase_if(localShareData->commandCallbacks, [&engine](auto& data) {
        return data.second.fromEngine == engine;
    });
    return true;
}

Local<Value> convertResult(DynamicCommand::Result const& result) {
    if (!result.isSet)
        return Local<Value>(); // null
    switch (result.type) {
        case DynamicCommand::ParameterType::Bool:
            return Boolean::newBoolean(result.getRaw<bool>());
        case DynamicCommand::ParameterType::Int:
            return Number::newNumber(result.getRaw<int>());
        case DynamicCommand::ParameterType::Float:
            return Number::newNumber(result.getRaw<float>());
        case DynamicCommand::ParameterType::String:
            return String::newString(result.getRaw<std::string>());
        case DynamicCommand::ParameterType::Actor: {
            auto arr = Array::newArray();
            for (auto i : result.get<std::vector<Actor*>>()) {
                arr.add(EntityClass::newEntity(i));
            }
            return arr;
        }
        case DynamicCommand::ParameterType::Player: {
            auto arr = Array::newArray();
            for (auto i : result.get<std::vector<Player*>>()) {
                arr.add(PlayerClass::newPlayer(i));
            }
            return arr;
        }
        case DynamicCommand::ParameterType::BlockPos: {
            auto dim = result.origin->getDimension();
            return IntPos::newPos(result.get<BlockPos>(), dim ? (int)dim->getDimensionId() : -1);
        }
        case DynamicCommand::ParameterType::Vec3: {
            auto dim = result.origin->getDimension();
            return FloatPos::newPos(result.get<Vec3>(), dim ? (int)dim->getDimensionId() : -1);
        }
        case DynamicCommand::ParameterType::Message:
            return String::newString(result.getRaw<CommandMessage>().getMessage(*result.origin));
        case DynamicCommand::ParameterType::RawText:
            return String::newString(result.getRaw<std::string>());
        case DynamicCommand::ParameterType::JsonValue:
            return String::newString(result.getRaw<Json::Value>().toStyledString());//这里可能会有问题原本使用JsonHelpers::serialize
        case DynamicCommand::ParameterType::Item:
            return ItemClass::newItem(new ItemStack(result.getRaw<CommandItem>().createInstance(1, 1, nullptr, true).value_or(ItemInstance::EMPTY_ITEM)));
        case DynamicCommand::ParameterType::Block:
            return BlockClass::newBlock(const_cast<Block*>(result.getRaw<Block const*>()), const_cast<BlockPos*>(&BlockPos::MIN), -1);
        case DynamicCommand::ParameterType::Effect:
            return String::newString(result.getRaw<MobEffect const*>()->getResourceName());
        case DynamicCommand::ParameterType::Enum:
            return String::newString(result.getRaw<std::string>());
        case DynamicCommand::ParameterType::SoftEnum:
            return String::newString(result.getRaw<std::string>());
        case DynamicCommand::ParameterType::Command:
            return String::newString(result.getRaw<std::unique_ptr<Command>>()->getCommandName());
        case DynamicCommand::ParameterType::ActorType:
            return String::newString(result.getRaw<ActorDefinitionIdentifier const*>()->getCanonicalName());
        default:
            return Local<Value>(); // null
            break;
    }
}

template <typename T>
std::enable_if_t<std::is_enum_v<T>, T> parseEnum(Local<Value> const& value) {
    if (value.isString()) {
        auto tmp = magic_enum::enum_cast<T>(value.toStr());
        if (!tmp.has_value())
            throw std::runtime_error("Unable to parse Enum value");
        return tmp.value();
    } else if (value.isNumber()) {
        return (T)value.toInt();
    }
    throw std::runtime_error("Unable to parse Enum value");
}

//////////////////// MC APIs ////////////////////

Local<Value> McClass::runcmd(const Arguments& args) {
    CHECK_ARGS_COUNT(args, 1)
    CHECK_ARG_TYPE(args[0], ValueKind::kString)

    try {
        return Boolean::newBoolean(Level::executeCommand(args[0].asString().toString()));
    }
    CATCH("Fail in RunCmd!")
}

Local<Value> McClass::runcmdEx(const Arguments& args) {
    CHECK_ARGS_COUNT(args, 1)
    CHECK_ARG_TYPE(args[0], ValueKind::kString)

    try {
        std::pair<bool, string> result = Level::executeCommandEx(args[0].asString().toString());
        Local<Object> resObj = Object::newObject();
        resObj.set("success", result.first);
        resObj.set("output", result.second);
        return resObj;
    }
    CATCH("Fail in RunCmdEx!")
}

// name, description, permission, flag, alias
Local<Value> McClass::newCommand(const Arguments& args) {
    CHECK_ARGS_COUNT(args, 2);
    CHECK_ARG_TYPE(args[0], ValueKind::kString);
    CHECK_ARG_TYPE(args[1], ValueKind::kString);

    try {
        auto name = args[0].toStr();
        auto instance = DynamicCommand::getInstance(name);
        if (instance) {
            logger.info("Dynamic command {} already exists, changes will not be applied except for setOverload!", name);
            return CommandClass::newCommand(const_cast<std::add_pointer_t<std::remove_cv_t<std::remove_pointer_t<decltype(instance)>>>>(instance));
        }

        auto desc = args[1].toStr();
        CommandPermissionLevel permission = CommandPermissionLevel::GameMasters;
        CommandFlag flag = {(CommandFlagValue)0x80};
        std::string alias = "";
        if (args.size() > 2) {
            permission = parseEnum<CommandPermissionLevel>(args[2]);
            if (args.size() > 3) {
                CHECK_ARG_TYPE(args[3], ValueKind::kNumber);
                flag = {(CommandFlagValue)args[3].toInt()};
                if (args.size() > 4) {
                    CHECK_ARG_TYPE(args[4], ValueKind::kString);
                    alias = args[4].toStr();
                }
            }
        }
        auto command = DynamicCommand::createCommand(name, desc, permission, flag);
        if (command) {
            if (!alias.empty())
                command->setAlias(alias);
            return CommandClass::newCommand(std::move(command));
        } else {
            return Boolean::newBoolean(false);
        }
    }
    CATCH("Fail in newCommand!")
}

//////////////////// Command APIs ////////////////////

CommandClass::CommandClass(std::unique_ptr<DynamicCommandInstance>&& p)
: ScriptClass(ScriptClass::ConstructFromCpp<CommandClass>{})
, uptr(std::move(p))
, ptr(uptr.get())
, registered(false){};

CommandClass::CommandClass(DynamicCommandInstance* p)
: ScriptClass(ScriptClass::ConstructFromCpp<CommandClass>{})
, uptr()
, ptr(p)
, registered(true){};

Local<Object> CommandClass::newCommand(std::unique_ptr<DynamicCommandInstance>&& p) {
    auto newp = new CommandClass(std::move(p));
    return newp->getScriptObject();
}

Local<Object> CommandClass::newCommand(DynamicCommandInstance* p) {
    auto newp = new CommandClass(p);
    return newp->getScriptObject();
}

Local<Value> CommandClass::getName() {
    try {
        return String::newString(get()->getCommandName());
    }
    CATCH("Fail in getCommandName!")
}

Local<Value> CommandClass::setAlias(const Arguments& args) {
    CHECK_ARGS_COUNT(args, 1)
    CHECK_ARG_TYPE(args[0], ValueKind::kString)
    try {
        if (registered)
            return Boolean::newBoolean(true); // TODO
        return Boolean::newBoolean(get()->setAlias(args[0].toStr()));
    }
    CATCH("Fail in setAlias!")
}

// string, vector<string>
Local<Value> CommandClass::setEnum(const Arguments& args) {
    CHECK_ARGS_COUNT(args, 2)
    CHECK_ARG_TYPE(args[0], ValueKind::kString)
    CHECK_ARG_TYPE(args[1], ValueKind::kArray)
    try {
        if (registered)
            return Local<Value>(); // TODO
        auto enumName = args[0].toStr();
        auto enumArr = args[1].asArray();
        if (enumArr.size() == 0 || !enumArr.get(0).isString())
            return Local<Value>();
        vector<string> enumValues;
        for (int i = 0; i < enumArr.size(); ++i) {
            enumValues.push_back(enumArr.get(i).toStr());
        }
        return String::newString(get()->setEnum(enumName, std::move(enumValues)));
    }
    CATCH("Fail in setEnum!")
}

// name, type, optional, description, identifier, option
// name, type, description, identifier, option
// name, type, optional, description, option
// name, type, description, option
Local<Value> CommandClass::newParameter(const Arguments& args) {
    CHECK_ARGS_COUNT(args, 2);
    CHECK_ARG_TYPE(args[0], ValueKind::kString);
    try {
        if (registered)
            return Boolean::newBoolean(true); // TODO
        auto name = args[0].toStr();
        DynamicCommand::ParameterType type = parseEnum<DynamicCommand::ParameterType>(args[1]);
        std::string description = "";
        bool optional = false;
        std::string identifier = "";
        size_t index = 2;
        CommandParameterOption option = (CommandParameterOption)0;
        if (args.size() > index && args[index].isBoolean())
            optional = args[index++].asBoolean().value();
        if (args.size() > index && args[index].isString())
            description = args[index++].toStr();
        if (args.size() > index && args[index].isString())
            identifier = args[index++].toStr();
        if (args.size() > index && args[index].isNumber())
            option = (CommandParameterOption)args[index++].toInt();
        if (index != args.size())
            throw std::runtime_error("Error Argument in newParameter");
        return Number::newNumber((int64_t)get()->newParameter(name, type, optional, description, identifier, option).index);
    }
    CATCH("Fail in newParameter!")
}

// name, type, description, identifier, option
// name, type, description, option
Local<Value> CommandClass::mandatory(const Arguments& args) {
    CHECK_ARGS_COUNT(args, 2);
    CHECK_ARG_TYPE(args[0], ValueKind::kString);
    try {
        if (registered)
            return Boolean::newBoolean(true); // TODO
        auto name = args[0].toStr();
        DynamicCommand::ParameterType type = parseEnum<DynamicCommand::ParameterType>(args[1]);
        std::string description = "";
        bool optional = false;
        std::string identifier = "";
        size_t index = 2;
        CommandParameterOption option = (CommandParameterOption)0;
        if (args.size() > index && args[index].isString())
            description = args[index++].toStr();
        if (args.size() > index && args[index].isString())
            identifier = args[index++].toStr();
        if (args.size() > index && args[index].isNumber())
            option = (CommandParameterOption)args[index++].toInt();
        if (index != args.size())
            throw std::runtime_error("Error Argument in newParameter");
        return Number::newNumber((int64_t)get()->newParameter(name, type, optional, description, identifier, option).index);
    }
    CATCH("Fail in newParameter!")
}

// name, type, description, identifier, option
// name, type, description, option
Local<Value> CommandClass::optional(const Arguments& args) {
    CHECK_ARGS_COUNT(args, 2);
    CHECK_ARG_TYPE(args[0], ValueKind::kString);
    try {
        if (registered)
            return Boolean::newBoolean(true); // TODO
        auto name = args[0].toStr();
        DynamicCommand::ParameterType type = parseEnum<DynamicCommand::ParameterType>(args[1]);
        std::string description = "";
        bool optional = true;
        std::string identifier = "";
        size_t index = 2;
        CommandParameterOption option = (CommandParameterOption)0;
        if (args.size() > index && args[index].isString())
            description = args[index++].toStr();
        if (args.size() > index && args[index].isString())
            identifier = args[index++].toStr();
        if (args.size() > index && args[index].isNumber())
            option = (CommandParameterOption)args[index++].toInt();
        if (index != args.size())
            throw std::runtime_error("Error Argument in newParameter");
        return Number::newNumber((int64_t)get()->newParameter(name, type, optional, description, identifier, option).index);
    }
    CATCH("Fail in newParameter!")
}

// vector<identifier>
// vector<index>
Local<Value> CommandClass::addOverload(const Arguments& args) {
    try {
        if (registered)
            return Boolean::newBoolean(true); // TODO
        auto command = get();
        if (args.size() == 0)
            return Boolean::newBoolean(command->addOverload(std::vector<DynamicCommandInstance::ParameterIndex>{}));
        if (args[0].isNumber()) {
            std::vector<DynamicCommandInstance::ParameterIndex> params;
            for (int i = 0; i < args.size(); ++i) {
                CHECK_ARG_TYPE(args[i], ValueKind::kNumber);
                params.emplace_back(command, (size_t)args[i].asNumber().toInt64());
            }
            return Boolean::newBoolean(command->addOverload(std::move(params)));
        } else if (args[0].isString()) {
            std::vector<std::string> params;
            for (int i = 0; i < args.size(); ++i) {
                CHECK_ARG_TYPE(args[i], ValueKind::kString);
                params.emplace_back(args[i].toStr());
            }
            return Boolean::newBoolean(command->addOverload(std::move(params)));
        } else if (args[0].isArray()) {
            auto arr = args[0].asArray();
            if (arr.size() == 0)
                return Boolean::newBoolean(command->addOverload(std::vector<DynamicCommandInstance::ParameterIndex>{}));
            if (arr.get(0).isNumber()) {
                std::vector<DynamicCommandInstance::ParameterIndex> params;
                for (int i = 0; i < arr.size(); ++i) {
                    CHECK_ARG_TYPE(arr.get(i), ValueKind::kNumber);
                    params.emplace_back(command, (size_t)arr.get(i).asNumber().toInt64());
                }
                return Boolean::newBoolean(command->addOverload(std::move(params)));
            } else if (arr.get(0).isString()) {
                std::vector<std::string> params;
                for (int i = 0; i < arr.size(); ++i) {
                    CHECK_ARG_TYPE(arr.get(i), ValueKind::kString);
                    params.emplace_back(arr.get(i).toStr());
                }
                return Boolean::newBoolean(command->addOverload(std::move(params)));
            }
        }
        LOG_WRONG_ARG_TYPE();
        return Local<Value>();
    }
    CATCH("Fail in addOverload!")
}

void onExecute(DynamicCommand const& command, CommandOrigin const& origin, CommandOutput& output,
               std::unordered_map<std::string, DynamicCommand::Result>& results) {
    auto instance = command.getInstance();
    auto& commandName = instance->getCommandName();
    if (localShareData->commandCallbacks.find(commandName) == localShareData->commandCallbacks.end()) {
        logger.warn("Command {} failed to execute, is the plugin unloaded?", commandName);
        return;
    }
    EngineScope enter(localShareData->commandCallbacks[commandName].fromEngine);
    try {
        Local<Object> args = Object::newObject();
        auto cmd = CommandClass::newCommand(const_cast<DynamicCommandInstance*>(instance));
        auto ori = CommandOriginClass::newCommandOrigin(&origin);
        auto outp = CommandOutputClass::newCommandOutput(&output);
        for (auto& [name, param] : results)
            args.set(name, convertResult(param));
        localShareData->commandCallbacks[commandName].func.get().call({}, cmd, ori, outp, args);
    }
    CATCH_WITHOUT_RETURN("Fail in executing command \"" + commandName + "\"!")
}

// not complete
void onExecute2(DynamicCommand const& command, CommandOrigin const& origin, CommandOutput& output,
                std::unordered_map<std::string, DynamicCommand::Result>& results) {
    auto instance = command.getInstance();
    auto& commandName = instance->getCommandName();
    if (localShareData->commandCallbacks.find(commandName) == localShareData->commandCallbacks.end()) {
        logger.warn("Command {} failed to execute, is the plugin unloaded?", commandName);
        return;
    }
    EngineScope enter(localShareData->commandCallbacks[commandName].fromEngine);
    try {
        // auto ctx = CommandContextClass::newCommandContext(&command, &origin, &output, &results);
        // Local<Object> args = Object::newObject();
        // for (auto& [name, param] : results)
        //     args.set(name, convertResult(param));
        // localShareData->commandCallbacks[commandName].func.get().call({}, ctx, args);
    }
    CATCH_WITHOUT_RETURN("Fail in executing command \"" + commandName + "\"!")
}

// function (command, origin, output, results){}
Local<Value> CommandClass::setCallback(const Arguments& args) {
    CHECK_ARGS_COUNT(args, 1);
    CHECK_ARG_TYPE(args[0], ValueKind::kFunction);
    try {
        auto func = args[0].asFunction();
        DynamicCommandInstance* command = get();
        auto& commandName = command->getCommandName();
        localShareData->commandCallbacks[commandName] = {EngineScope::currentEngine(), 0, script::Global<Function>(func)};
        if (registered)
            return Boolean::newBoolean(true);
        get()->setCallback(onExecute);
        return Boolean::newBoolean(true);
    }
    CATCH("Fail in setCallback!")
}

// setup(Function<Command, Origin, Output, Map<String, Any>>)
Local<Value> CommandClass::setup(const Arguments& args) {
    try {
        if (args.size() > 0) {
            setCallback(args);
        }
        if (registered)
            return Boolean::newBoolean(true);
        return Boolean::newBoolean(DynamicCommand::setup(std::move(uptr)));
    }
    CATCH("Fail in setup!")
}

Local<Value> CommandClass::isRegistered() {
    return Boolean::newBoolean(registered);
}

Local<Value> CommandClass::toString(const Arguments& args) {
    try {
        return String::newString(fmt::format("<Command({})>", get()->getCommandName()));
    }
    CATCH("Fail in toString!");
}

Local<Value> CommandClass::setSoftEnum(const Arguments& args) {
    CHECK_ARGS_COUNT(args, 2);
    CHECK_ARG_TYPE(args[0], ValueKind::kString);
    CHECK_ARG_TYPE(args[1], ValueKind::kArray);
    try {
        auto name = args[0].toStr();
        auto enums = parseStringList(args[1].asArray());
        return String::newString(get()->setSoftEnum(name, std::move(enums)));
    }
    CATCH("Fail in setSoftEnum!");
}

Local<Value> CommandClass::addSoftEnumValues(const Arguments& args) {
    CHECK_ARGS_COUNT(args, 2);
    CHECK_ARG_TYPE(args[0], ValueKind::kString);
    CHECK_ARG_TYPE(args[1], ValueKind::kArray);
    try {
        auto name = args[0].toStr();
        auto enums = parseStringList(args[1].asArray());
        return Boolean::newBoolean(get()->addSoftEnumValues(name, std::move(enums)));
    }
    CATCH("Fail in addSoftEnumValues!");
}

Local<Value> CommandClass::removeSoftEnumValues(const Arguments& args) {
    CHECK_ARGS_COUNT(args, 2);
    CHECK_ARG_TYPE(args[0], ValueKind::kString);
    CHECK_ARG_TYPE(args[1], ValueKind::kArray);
    try {
        auto name = args[0].toStr();
        auto enums = parseStringList(args[1].asArray());
        return Boolean::newBoolean(get()->removeSoftEnumValues(name, std::move(enums)));
    }
    CATCH("Fail in removeSoftEnumValues!");
}

Local<Value> CommandClass::getSoftEnumValues(const Arguments& args) {
    CHECK_ARGS_COUNT(args, 1);
    CHECK_ARG_TYPE(args[0], ValueKind::kString);
    try {
        auto name = args[0].toStr();
        return getStringArray(get()->getSoftEnumValues(name));
    }
    CATCH("Fail in getSoftEnumValues");
}

Local<Value> CommandClass::getSoftEnumNames(const Arguments& args) {
    try {
        return getStringArray(get()->getSoftEnumNames());
    }
    CATCH("Fail in getSoftEnumNames");
}