// SPDX-FileCopyrightText: 2026 Filip Leonarski, Paul Scherrer Institute <filip.leonarski@psi.ch>
// SPDX-License-Identifier: GPL-3.0-only

#pragma once

#include <QElapsedTimer>
#include <QString>
#include <QWidget>
#include <cstdint>
#include <optional>
#include <vector>

#include "../JFJochProcessController.h"
#include "../JFJochImageReadingWorker.h"   // ReprocessingInputs

class QTableWidget;
class QProgressBar;
class QStackedWidget;
class QToolBar;
class QToolButton;

// Makes processing a first-class GUI activity: a dockable panel with a table of processing jobs run
// on the current dataset. A job can be run locally (off the GUI thread, via JFJochProcessController)
// or its rugnux command line copied for a cluster. A finished local run is registered as a
// reader snapshot so its results become a selectable view of the dataset. Re-processing reads a
// stored HDF5 file, so the panel shows an explanatory message while connected to a live HTTP stream.
class JFJochProcessingJobsWindow : public QWidget {
    Q_OBJECT
public:
    explicit JFJochProcessingJobsWindow(JFJochImageReadingWorker *worker, QWidget *parent = nullptr);

signals:
    void registerSnapshot(QString id, QString label, QString master_path);
    void activateSnapshot(QString id);
    void renameRun(QString id, QString label);
    void removeRun(QString id);
    void writeStatusBar(QString message, int timeout_ms = 0);
    // Live per-image results while a job runs, for the dataset-info plots (nullptr clears it).
    void liveDataset(std::shared_ptr<const JFJochReaderDataset> dataset);
    void jobStarted();   // a reprocessing job was launched — reveal the (hidden-by-default) panel

public slots:
    void onHttpConnectionChanged(bool connected, QString addr);
    void clearJobs();                    // reset the table on a new file (re-adds the Original row)
    void setActiveRun(QString active_id);   // bold the row of the run currently shown in the plots
    void newJob(bool azint = false);     // the panel's "Analyze dataset" action; azint = AzInt page

private slots:
    void cancelJob();
    void removeResult();
    void viewResults();
    void onPhase(QString phase);
    void onProgress(quint64 done, quint64 total);
    void onFinished(ProcessResult result);
    void onFailed(QString error);

private:
    struct JobInfo {
        QString id;              // stable reader-snapshot key
        QString label;           // editable display name (legend / table)
        QString snapshot_path;   // empty unless saved
        bool has_result = false;
        // Merge statistics captured when a scaling/merging job finished (drive the analysis window).
        bool has_merge_stats = false;
        MergeStatistics merge_stats;
        double isa = 0.0;
        bool merge_has_reference = false;
        TwinningAnalysisResult twinning;    // twinning test of the merged intensities
        std::optional<int64_t> space_group_number;                  // final space group (searched or fixed)
        std::optional<SearchSpaceGroupResult> space_group_search;   // ranked candidates, when a search ran
        std::vector<std::pair<float, float>> merged_i_sigma;        // ISa diagnostic scatter
        QToolButton *graph_btn = nullptr;   // per-row "show statistics" button (enabled once stats exist)
    };
    struct JobSpec {
        ProcessMode mode = ProcessMode::FullAnalysis;
        int start_image = 0;
        int end_image = 0;       // 0 == to the end
        int threads = 4;
        bool save_h5 = true;        // write the per-image _process.h5 (also drives the viewer snapshot)
        bool save_merged = true;    // write the merged .mtz/.cif
        QString prefix;
        bool rotation = false;
        int rotation_images = 30;   // images used to find the rotation lattice (first pass)
        bool scaling = false;
        bool refine_geometry = false;       // stills-only global geometry bundle-adjust (needs a known cell)
        int refine_geometry_frames = 200;   // strong indexed frames fed to that bundle adjustment
        bool rotation_postrefine = true;    // rotation-only two-pass geometry post-refine (default on)
    };

    // Returns 0 = cancel, 1 = run locally, 2 = copy command line; fills spec from the dialog.
    int askJob(const ReprocessingInputs &inputs, JobSpec &spec, bool azint);
    ProcessConfig buildConfig(const JobSpec &spec, const ReprocessingInputs &inputs) const;
    void setStatus(int row, const QString &text);
    void addOriginalRow();   // the file's own data as the first, always-present run
    void addRowActions(int row, const QString &id);   // per-row graph (stats) + trash (remove) buttons
    void showStats(const QString &id);                // open the merge-statistics window for a run
    void removeRunById(const QString &id);            // remove a run from the table + reader

    JFJochImageReadingWorker *worker_;
    JFJochProcessController *controller_;
    QToolBar *toolbar_;
    QStackedWidget *stack_;                 // page 0: jobs table, page 1: HTTP-mode message
    QTableWidget *table_;
    QProgressBar *running_bar_ = nullptr;   // lives in the running row's Status cell
    QElapsedTimer job_timer_;               // running job wall-clock, for rate + ETA
    int running_row_ = -1;
    int job_counter_ = 0;
    std::vector<JobInfo> jobs_;
};