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

#pragma once

#include <stdexcept>
#include <string>
#include <memory>
#include <vector>
#include <cstdint>

namespace DB {
struct Session {
    unsigned int id;
    unsigned int owner;
    std::string accessToken;
    std::string renewToken;
};

struct Asset {
    unsigned int id;
    unsigned int owner;
    unsigned int currency;
    std::string title;
    std::string icon;
    // `color` INTEGER UNSIGNED DEFAULT 0,
    // `balance` DECIMAL (20, 5) DEFAULT 0,
    // `type` INTEGER UNSIGNED NOT NULL,
    bool archived;
};

class Interface {
public:
    enum class Type {
        mysql
    };
    enum class State {
        disconnected,
        connecting,
        connected
    };
    static std::unique_ptr<Interface> create(Type type);

    virtual ~Interface();

    State currentState() const;

    const Type type;

public:
    virtual void connect(const std::string& path) = 0;
    virtual void disconnect() = 0;
    virtual void setDatabase(const std::string& newDatabase) = 0;
    virtual void setCredentials(const std::string& login, const std::string& password) = 0;

    virtual void migrate(uint8_t targetVersion) = 0;
    virtual uint8_t getVersion() = 0;
    virtual void setVersion(uint8_t version) = 0;

    virtual unsigned int registerAccount(const std::string& login, const std::string& hash) = 0;
    virtual std::string getAccountHash(const std::string& login) = 0;
    virtual Session createSession(const std::string& login, const std::string& access, const std::string& renew) = 0;
    virtual Session findSession(const std::string& accessToken) = 0;
    virtual std::vector<Asset> listAssets(unsigned int owner) = 0;

protected:
    Interface(Type type);

protected:
    State state;
};
}