// src/screens/algo_trading/DeploymentDashboard.h
#pragma once
#include "algo_engine/AlgoEngineTypes.h"
#include "services/algo_trading/AlgoTradingTypes.h"

#include <QEvent>
#include <QFrame>
#include <QHash>
#include <QHideEvent>
#include <QLabel>
#include <QProgressBar>
#include <QPushButton>
#include <QShowEvent>
#include <QStringList>
#include <QTimer>
#include <QVBoxLayout>
#include <QWidget>

namespace fincept::screens {

/// Live deployment monitor — shows running strategies with real-time metrics.
class DeploymentDashboard : public QWidget {
    Q_OBJECT
  public:
    explicit DeploymentDashboard(QWidget* parent = nullptr);

  protected:
    void changeEvent(QEvent* event) override;
    // P3: the 1s "updated Ns ago" ticker must not run while the tab is hidden.
    void showEvent(QShowEvent* event) override;
    void hideEvent(QHideEvent* event) override;

  private slots:
    void on_deployments_loaded(QVector<fincept::services::algo::AlgoDeployment> deployments);
    void on_live_update(const QString& deployment_id, const fincept::algo::AlgoLiveSnapshot& snap);
    void on_error(const QString& context, const QString& msg);

  private:
    void build_ui();
    void connect_service();
    QWidget* build_deployment_card(const fincept::services::algo::AlgoDeployment& d, QWidget* parent);
    void update_summary(const QVector<fincept::services::algo::AlgoDeployment>& deployments);
    void refresh_ages();
    void retranslateUi();

    // Live-updated widgets per deployment, so the card updates in place (no flicker)
    // on each snapshot instead of rebuilding the whole list.
    struct CardHandles {
        QLabel* ltp = nullptr;
        QLabel* updated = nullptr;
        QLabel* pnl = nullptr;
        QLabel* position = nullptr;
        QLabel* trades = nullptr;
        QVBoxLayout* conditions = nullptr; // condition-status rows (rebuilt per update)
        QLabel* activity = nullptr;
        QString broker_id;
        QString mode;
        int64_t last_update_ms = 0;
        QStringList activity_lines;
        // Set when the user has confirmed a STOP for this deployment but the
        // engine hasn't reported "stopped" yet — prevents the card from claiming
        // RUNNING while a stop is in flight, and blocks double-stop clicks.
        bool stop_pending = false;
    };
    QHash<QString, CardHandles> cards_;
    QStringList card_order_; // deployment ids currently shown, to detect structure changes
    QTimer* age_timer_ = nullptr;

    // Summary stats (value labels captured by build_stat_card; captions cached for retranslate)
    QLabel* active_count_ = nullptr;
    QLabel* active_caption_ = nullptr;
    QLabel* total_pnl_ = nullptr;
    QLabel* total_pnl_caption_ = nullptr;
    QLabel* total_trades_ = nullptr;
    QLabel* total_trades_caption_ = nullptr;
    QLabel* avg_win_rate_ = nullptr;
    QLabel* avg_win_rate_caption_ = nullptr;

    // Equity curve placeholder
    QFrame* equity_placeholder_ = nullptr;
    QLabel* eq_title_ = nullptr;
    QLabel* eq_hint_ = nullptr;

    // Control bar + section
    QPushButton* refresh_btn_ = nullptr;
    QPushButton* stop_all_btn_ = nullptr;
    QLabel* dep_title_ = nullptr;

    int deployment_count_ = 0; // for status_label_ retranslate

    QVBoxLayout* deployments_layout_ = nullptr;
    QLabel* status_label_ = nullptr;
};

} // namespace fincept::screens