/*
 * This file is part of the Flowee project
 * Copyright (C) 2020-2026 Tom Zander <tom@flowee.org>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef PORTFOLIODATAPROVIDER_H
#define PORTFOLIODATAPROVIDER_H

#include <QObject>
#include "AccountInfo.h"

class Wallet;
class BitcoinValue;
class Payment;

class PortfolioDataProvider : public QObject
{
    Q_OBJECT
    /**
     * List all active and visible accounts.
     */
    Q_PROPERTY(QList<QObject*> accounts READ accounts NOTIFY accountsChanged)
    /**
     * List only archived accounts.
     */
    Q_PROPERTY(QList<QObject*> archivedAccounts READ archivedAccounts NOTIFY accountsChanged)
    /**
     * List all accounts, active, inactive (aka private) and archived.
     */
    Q_PROPERTY(QList<QObject*> rawAccounts READ rawAccounts NOTIFY accountsChanged)
    Q_PROPERTY(AccountInfo* current READ current WRITE setCurrent NOTIFY currentChanged)
    Q_PROPERTY(double totalBalance READ totalBalance NOTIFY totalBalanceChanged)
    /**
     * This returns true when the UI can avoid showing elements that allows the user to
     * select between different wallets.
     *
     * Notice that when the limitedArchiveView is set to true (default), we are a single-account-setup
     * simply by having exactly one non-archived wallet.
     * In the case of the limitedArchiveView being set to false, implying the UI has full
     * view of the archived wallets, the only way to have a single-account setup is by having
     * exactly one wallet.
     */
    Q_PROPERTY(bool singleAccountSetup READ isSingleAccount NOTIFY singleAccountChanged)
    /**
     * If true, the UI hides archived wallets in the general screens.
     * This should be set by the UI.
     *
     * A user interface that allows direct interaction with archived wallets will have a different idea of what
     * makes a 'singleAccountSetup'.
     */
    Q_PROPERTY(bool limitedArchiveView READ limitedArchiveView WRITE setLimitedArchiveView NOTIFY limitedArchiveViewChanged FINAL)
public:
    explicit PortfolioDataProvider(QObject *parent = nullptr);

    QList<QObject*> accounts() const;
    QList<QObject*> rawAccounts() const;
    QList<QObject*> archivedAccounts() const;

    AccountInfo *current() const;
    void setCurrent(AccountInfo *item);

    /// find the highest priority wallet and make it the selected one
    void selectDefaultWallet();

    double totalBalance() const;

    bool isSingleAccount() const;

    bool limitedArchiveView() const;
    void setLimitedArchiveView(bool newLimitedArchiveView);

    // returns a AccountInfo matching a segmentId, or null
    Q_INVOKABLE QObject* account(int id) const;

    std::shared_ptr<Wallet> walletById(uint16_t segmentId) const;

public slots:
    void addWalletAccount(const std::shared_ptr<Wallet> &wallet);

signals:
    void accountsChanged();
    void currentChanged(uint16_t segmentId);
    void totalBalanceChanged();
    void singleAccountChanged();
    void limitedArchiveViewChanged();

private slots:
    void walletChangedPriority();
    void updateIsSingleAccount();

private:
    Payment* createPaymentObject(const QString &address, double value) const;

    std::map<uint16_t, std::shared_ptr<Wallet>> m_accounts;
    QList<AccountInfo*> m_accountInfos;

    uint16_t m_currentAccount = 0;
    bool m_isSingleAccount = true;
    bool m_limitedArchiveView = false;
};

#endif