//SPDX-FileCopyrightText: 2023 Yury Gubich <blue@macaw.me>
//SPDX-License-Identifier: GPL-3.0-or-later

#include "api.h"
#include <QDebug>
#include <QJsonDocument>
#include <QJsonObject>
#include <QUrlQuery>

#include "requests/test.h"
#include "requests/register.h"
#include "requests/login.h"
#include "requests/poll.h"
#include "requests/assets.h"
#include "requests/currencies.h"
#include "requests/addasset.h"
#include "requests/deleteasset.h"
#include "requests/updateasset.h"

API::API (Models::Magpie& magpie, QObject* parent):
    QObject(parent),
    idCounter(0),
    magpie(magpie),
    network(),
    requests()
{}

void API::cancelRequest (RequestId id) {
    requests.erase(id);
}

void API::onRequestDone (RequestId id) {
    requests.erase(id);
}

API::RequestId API::test (const QString& path, const QJSValue& finished) {
    qDebug() << "Testing" << path;
    if (magpie.getState() == Models::Magpie::Offline)
        callCallback(finished, "Need to be online to test"), 0;

    std::unique_ptr<Request::Test> test = std::make_unique<Request::Test>(path);
    connect(
        test.get(),
        &Request::Test::success,
        this,
        [this, &path, &finished] (const QVariantMap& data) {
            callCallback(finished, QString(), {QJSValue(true)});
            magpie.forceAddress(path);
        }
    );
    connect(test.get(), &Request::Test::error, std::bind(&API::callCallback, this, finished, std::placeholders::_1, QJSValueList(false)));
    return registerAndSend(std::move(test));
}

API::RequestId API::sendRegister (const QString& login, const QString& password, const QJSValue& finished) {
    qDebug() << "Registering...";
    if (magpie.getState() != Models::Magpie::NotAuthenticated)
        return callCallback(finished, "Can not register in current state"), 0;

    std::unique_ptr<Request::Register> reg = std::make_unique<Request::Register>(login, password, magpie.getAddress());
    connect(reg.get(), &Request::Register::success, std::bind(&API::callCallback, this, finished, QString(), QJSValueList{QJSValue(true)}));
    connect(reg.get(), &Request::Register::error, std::bind(&API::callCallback, this, finished, std::placeholders::_1, QJSValueList{QJSValue(false)}));
    return registerAndSend(std::move(reg));
}

API::RequestId API::sendLogin (const QString& login, const QString& password, const QJSValue& finished) {
    qDebug() << "Logging in...";
    if (magpie.getState() != Models::Magpie::NotAuthenticated)
        return callCallback(finished, "Can not register in current state"), 0;

    std::unique_ptr<Request::Login> log = std::make_unique<Request::Login>(login, password, magpie.getAddress());
    connect(
        log.get(),
        &Request::Login::success,
        this,
        [this, &finished] (const QVariantMap& data) {
            callCallback(finished, QString(), {QJSValue(true)});
            magpie.setTokens(data.value("accessToken").toString(), data.value("renewToken").toString());
        }
    );
    connect(
        log.get(),
        &Request::Login::error,
        this,
        [this, &finished] (const QString& error) {
            callCallback(finished, error, {QJSValue(false)});
            magpie.setState(Models::Magpie::NotAuthenticated);
        }
    );

    magpie.setState(Models::Magpie::Authenticating);
    return registerAndSend(std::move(log));
}

API::RequestId API::requestAssets (const SuccessListHandler& success, const ErrorHandler& error) {
    qDebug() << "Requesting assets...";

    auto list = std::make_unique<Request::Assets>(magpie.getAddress());
    list->setAuthorizationToken(magpie.getAccessToken());
    connect(list.get(), &Request::Assets::success, success);
    connect(list.get(), &Request::Assets::error, error);
    return registerAndSend(std::move(list));
}

API::RequestId API::requestCurrencies (const SuccessListHandler& success, const ErrorHandler& error) {
    qDebug() << "Requesting currencies...";

    auto list = std::make_unique<Request::Currencies>(magpie.getAddress());
    list->setAuthorizationToken(magpie.getAccessToken());
    connect(list.get(), &Request::Currencies::success, success);
    connect(list.get(), &Request::Currencies::error, error);
    return registerAndSend(std::move(list));
}

API::RequestId API::addAsset (
    const QString& title,
    const QString& icon,
    const QColor& color,
    Models::Currency::ID currency,
    const QJSValue& finished
) {
    qDebug() << "Adding asset...";
    if (magpie.getState() != Models::Magpie::Authenticated)
        return callCallback(finished, "Can not add assets in current state"), 0;

    auto add = std::make_unique<Request::AddAsset>(title, icon, color, currency, magpie.getAddress());
    add->setAuthorizationToken(magpie.getAccessToken());
    connect(add.get(), &Request::AddAsset::success, std::bind(&API::callCallback, this, finished, QString(), QJSValueList{QJSValue(true)}));
    connect(add.get(), &Request::AddAsset::error, std::bind(&API::callCallback, this, finished, std::placeholders::_1, QJSValueList{QJSValue(false)}));
    return registerAndSend(std::move(add));
}

API::RequestId API::updateAsset (
    Models::Asset::ID id,
    const QString& title,
    const QString& icon,
    const QColor& color,
    Models::Currency::ID currency,
    const QJSValue& finished
) {
    qDebug() << "Updating asset...";
    if (magpie.getState() != Models::Magpie::Authenticated)
        return callCallback(finished, "Can not update assets in current state"), 0;

    auto update = std::make_unique<Request::UpdateAsset>(id, title, icon, color, currency, magpie.getAddress());
    update->setAuthorizationToken(magpie.getAccessToken());
    connect(update.get(), &Request::UpdateAsset::success, std::bind(&API::callCallback, this, finished, QString(), QJSValueList{QJSValue(true)}));
    connect(update.get(), &Request::UpdateAsset::error, std::bind(&API::callCallback, this, finished, std::placeholders::_1, QJSValueList{QJSValue(false)}));
    return registerAndSend(std::move(update));
}

API::RequestId API::deleteAsset (unsigned int id, const QJSValue& finished) {
    qDebug() << "Deleting asset...";
    if (magpie.getState() != Models::Magpie::Authenticated)
        return callCallback(finished, "Can not delete assets in current state"), 0;

    auto del = std::make_unique<Request::DeleteAsset>(id, magpie.getAddress());
    del->setAuthorizationToken(magpie.getAccessToken());
    connect(del.get(), &Request::DeleteAsset::success, std::bind(&API::callCallback, this, finished, QString(), QJSValueList{QJSValue(true)}));
    connect(del.get(), &Request::DeleteAsset::error, std::bind(&API::callCallback, this, finished, std::placeholders::_1, QJSValueList{QJSValue(false)}));
    return registerAndSend(std::move(del));
}

API::RequestId API::poll (const SuccessMapHandler& success, const ErrorHandler& error, bool clear) {
    auto poll = std::make_unique<Request::Poll>(magpie.getAddress(), clear);
    poll->setAuthorizationToken(magpie.getAccessToken());
    connect(poll.get(), &Request::Poll::success, success);
    connect(poll.get(), &Request::Poll::error, error);
    return registerAndSend(std::move(poll));
}

API::RequestId API::registerAndSend (std::unique_ptr<Request::Request> request) {
    Request::Request* req = request.get();
    requests.emplace(++idCounter, std::move(request));
    connect(req, &Request::Request::done, std::bind(&API::onRequestDone, this, idCounter));
    req->send(network);
    return idCounter;
}

void API::callCallback (const QJSValue& callback, const QString& error, const QJSValueList& arguments) const {
    if (callback.isCallable()) {
        if (error.isEmpty())
            callback.call(QJSValueList({QJSValue(QJSValue::NullValue)}) + arguments);
        else
            callback.call({QJSValue(error)});
    }
}