#pragma once

#include <QList>
#include <QMainWindow>
#include <QStringList>

#include "settings.h"

class QDateEdit;
class QLabel;
class QLineEdit;
class QPushButton;
class QSpinBox;
class QStackedWidget;
class QVBoxLayout;
class PhotoItemWidget;
class ManagePostWidget;
class UploadClient;

class MainWindow : public QMainWindow
{
    Q_OBJECT
public:
    explicit MainWindow(QWidget *parent = nullptr);

private:
    QWidget *buildSettingsPage();
    QWidget *buildPostPage();
    QWidget *buildManagePage();

    void showSettings();
    void showPost();
    void showManage();

    void saveAndTest();
    void chooseImages();
    void addItem(const QString &path);
    void removeItem(PhotoItemWidget *item);
    void clearItems();
    void submit();
    void pumpQueue();                    // starts queued items up to the concurrency cap
    void startItem(PhotoItemWidget *item);
    int inFlightCount() const;           // items currently preparing or uploading
    void refreshPosting();               // updates the Post button + summary from item states

    // Manage page.
    UploadClient *manageClient();        // lazily-built, lives as long as the window
    void loadManage();                   // fetches the post list and thumbnails
    void clearManageItems();
    void editItem(ManagePostWidget *item);
    void deleteItem(ManagePostWidget *item);

    // Tag autocomplete.
    void refreshTags();                  // fetches /api/tags.json
    void applyTagSuggestions();          // pushes the list onto every post card

    Settings m_settings;

    QStackedWidget *m_stack = nullptr;

    // Settings page
    QLineEdit *m_baseUrl = nullptr;
    QLineEdit *m_username = nullptr;
    QLineEdit *m_password = nullptr;
    QSpinBox *m_concurrency = nullptr;
    QPushButton *m_saveButton = nullptr;
    QPushButton *m_settingsBack = nullptr;
    QLabel *m_settingsStatus = nullptr;

    // Post page
    QVBoxLayout *m_itemsLayout = nullptr; // holds the PhotoItemWidgets
    QList<PhotoItemWidget *> m_items;
    QLabel *m_emptyHint = nullptr;
    QPushButton *m_postButton = nullptr;
    QLabel *m_postSummary = nullptr;
    QLabel *m_lastPost = nullptr;

    // Bulk-post state: items waiting for a free upload slot, plus the batch's
    // credentials captured once at submit time.
    QList<PhotoItemWidget *> m_queue;
    QString m_batchBaseUrl;
    QString m_batchUsername;
    QString m_batchPassword;
    QString m_batchCacheDir;

    // Manage page
    QVBoxLayout *m_manageLayout = nullptr; // holds the ManagePostWidgets
    QList<ManagePostWidget *> m_manageItems;
    QLabel *m_manageEmptyHint = nullptr;
    QLabel *m_manageStatus = nullptr;
    QPushButton *m_manageRefresh = nullptr;
    UploadClient *m_manageClient = nullptr; // lazily created, reused for manage ops

    // Known tag names for autocomplete, shared by the post cards and the edit
    // dialog. Best-effort: empty until /api/tags.json arrives.
    QStringList m_tagSuggestions;
};