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#include "Events.hpp"

#include "../Compositor.hpp"
#include "../helpers/WLClasses.hpp"
#include "../managers/InputManager.hpp"
#include "../render/Renderer.hpp"

// ------------------------------ //
//   __  __ _____  _____  _____   //
//  |  \/  |_   _|/ ____|/ ____|  //
//  | \  / | | | | (___ | |       //
//  | |\/| | | |  \___ \| |       //
//  | |  | |_| |_ ____) | |____   //
//  |_|  |_|_____|_____/ \_____|  //
//                                //
// ------------------------------ //

void Events::listener_outputMgrApply(wl_listener* listener, void* data) {
    const auto CONFIG = (wlr_output_configuration_v1*)data;
    g_pHyprRenderer->outputMgrApplyTest(CONFIG, false);
}

void Events::listener_outputMgrTest(wl_listener* listener, void* data) {
    const auto CONFIG = (wlr_output_configuration_v1*)data;
    g_pHyprRenderer->outputMgrApplyTest(CONFIG, true);
}

void Events::listener_requestSetPrimarySel(wl_listener* listener, void* data) {
    const auto EVENT = (wlr_seat_request_set_primary_selection_event*)data;
    wlr_seat_set_primary_selection(g_pCompositor->m_sSeat.seat, EVENT->source, EVENT->serial);
}

void Events::listener_requestSetSel(wl_listener* listener, void* data) {
    const auto EVENT = (wlr_seat_request_set_selection_event*)data;
    wlr_seat_set_selection(g_pCompositor->m_sSeat.seat, EVENT->source, EVENT->serial);
}

void Events::listener_readyXWayland(wl_listener* listener, void* data) {
    const auto XCBCONNECTION = xcb_connect(g_pXWaylandManager->m_sWLRXWayland->display_name, NULL);
    const auto ERR = xcb_connection_has_error(XCBCONNECTION);
    if (ERR) {
        Debug::log(LogLevel::ERR, "XWayland -> xcb_connection_has_error failed with %i", ERR);
        return;
    }

    for (auto& ATOM : HYPRATOMS) {
        xcb_intern_atom_cookie_t cookie = xcb_intern_atom(XCBCONNECTION, 0, ATOM.first.length(), ATOM.first.c_str());
        xcb_intern_atom_reply_t* reply = xcb_intern_atom_reply(XCBCONNECTION, cookie, NULL);

        if (!reply) {
            Debug::log(LogLevel::ERR, "XWayland -> Atom failed: %s", ATOM.first.c_str());
            continue;
        }

        ATOM.second = reply->atom;
    }

    wlr_xwayland_set_seat(g_pXWaylandManager->m_sWLRXWayland, g_pCompositor->m_sSeat.seat);

    const auto XCURSOR = wlr_xcursor_manager_get_xcursor(g_pCompositor->m_sWLRXCursorMgr, "left_ptr", 1);
    if (XCURSOR) {
        wlr_xwayland_set_cursor(g_pXWaylandManager->m_sWLRXWayland, XCURSOR->images[0]->buffer, XCURSOR->images[0]->width * 4, XCURSOR->images[0]->width, XCURSOR->images[0]->height, XCURSOR->images[0]->hotspot_x, XCURSOR->images[0]->hotspot_y);
    }

    xcb_disconnect(XCBCONNECTION);
}

void Events::listener_requestDrag(wl_listener* listener, void* data) {
    const auto E = (wlr_seat_request_start_drag_event*)data;

    if (!wlr_seat_validate_pointer_grab_serial(g_pCompositor->m_sSeat.seat, E->origin, E->serial)) {
        Debug::log(LOG, "Ignoring drag and drop request: serial mismatch.");
        wlr_data_source_destroy(E->drag->source);
        return;
    }

    wlr_seat_start_pointer_drag(g_pCompositor->m_sSeat.seat, E->drag, E->serial);
}

void Events::listener_startDrag(wl_listener* listener, void* data) {
   
    if (g_pInputManager->m_sDrag.drag)
        return; // don't handle multiple drags

    g_pInputManager->m_sDrag.drag = (wlr_drag*)data;

    wlr_drag* wlrDrag = (wlr_drag*)data;

    Debug::log(LOG, "Started drag %x", wlrDrag);

    wlrDrag->data = data;

    g_pInputManager->m_sDrag.hyprListener_destroy.initCallback(&wlrDrag->events.destroy, &Events::listener_destroyDrag, &g_pInputManager->m_sDrag, "Drag");

    if (wlrDrag->icon) {
        Debug::log(LOG, "Drag started with an icon %x", wlrDrag->icon);

        g_pInputManager->m_sDrag.dragIcon = wlrDrag->icon;
        wlrDrag->icon->data = g_pInputManager->m_sDrag.dragIcon;

        g_pInputManager->m_sDrag.hyprListener_mapIcon.initCallback(&wlrDrag->icon->events.map, &Events::listener_mapDragIcon, &g_pInputManager->m_sDrag, "DragIcon");
        g_pInputManager->m_sDrag.hyprListener_unmapIcon.initCallback(&wlrDrag->icon->events.unmap, &Events::listener_unmapDragIcon, &g_pInputManager->m_sDrag, "DragIcon");
        g_pInputManager->m_sDrag.hyprListener_destroyIcon.initCallback(&wlrDrag->icon->events.destroy, &Events::listener_destroyDragIcon, &g_pInputManager->m_sDrag, "DragIcon");
        g_pInputManager->m_sDrag.hyprListener_commitIcon.initCallback(&wlrDrag->icon->surface->events.commit, &Events::listener_commitDragIcon, &g_pInputManager->m_sDrag, "DragIcon");
    }
}

void Events::listener_destroyDrag(void* owner, void* data) {
    Debug::log(LOG, "Drag destroyed.");

    g_pInputManager->m_sDrag.drag = nullptr;
    g_pInputManager->m_sDrag.dragIcon = nullptr;
    g_pInputManager->m_sDrag.hyprListener_destroy.removeCallback();

    g_pInputManager->refocus();
}

void Events::listener_mapDragIcon(void* owner, void* data) {
    Debug::log(LOG, "Drag icon mapped.");
    g_pInputManager->m_sDrag.iconMapped = true;
}

void Events::listener_unmapDragIcon(void* owner, void* data) {
    Debug::log(LOG, "Drag icon unmapped.");
    g_pInputManager->m_sDrag.iconMapped = false;
}

void Events::listener_destroyDragIcon(void* owner, void* data) {
    Debug::log(LOG, "Drag icon destroyed.");

    g_pInputManager->m_sDrag.dragIcon = nullptr;
    g_pInputManager->m_sDrag.hyprListener_commitIcon.removeCallback();
    g_pInputManager->m_sDrag.hyprListener_destroyIcon.removeCallback();
    g_pInputManager->m_sDrag.hyprListener_mapIcon.removeCallback();
    g_pInputManager->m_sDrag.hyprListener_unmapIcon.removeCallback();
}

void Events::listener_commitDragIcon(void* owner, void* data) {
    g_pInputManager->updateDragIcon();

    Debug::log(LOG, "Drag icon committed.");
}

void Events::listener_InhibitActivate(wl_listener* listener, void* data) {
    Debug::log(LOG, "Activated exclusive for %x.", g_pCompositor->m_sSeat.exclusiveClient);
    
    g_pInputManager->refocus();
    g_pCompositor->m_sSeat.exclusiveClient = g_pCompositor->m_sWLRInhibitMgr->active_client;
}

void Events::listener_InhibitDeactivate(wl_listener* listener, void* data) {
    Debug::log(LOG, "Deactivated exclusive.");

    g_pCompositor->m_sSeat.exclusiveClient = nullptr;
    g_pInputManager->refocus();
}