#include "events.hpp"

void handle() {
    g_pWindowManager->statusBar.draw();

    // check config
    ConfigManager::tick();
}

void Events::setThread() {

    g_pWindowManager->barThread = new std::thread([&]() {
        for (;;) {
            handle();
            std::this_thread::sleep_for(std::chrono::milliseconds(1000 / ConfigManager::getInt("max_fps")));
        }
    });
}

void Events::eventEnter(xcb_generic_event_t* event) {
    const auto E = reinterpret_cast<xcb_enter_notify_event_t*>(event);

    // Just focus it and update.
    g_pWindowManager->setFocusedWindow(E->event);

    //                                           vvv insallah no segfaults
    g_pWindowManager->getWindowFromDrawable(E->event)->setDirty(true);
}

void Events::eventLeave(xcb_generic_event_t* event) {
    const auto E = reinterpret_cast<xcb_leave_notify_event_t*>(event);

    //
}

void Events::eventDestroy(xcb_generic_event_t* event) {
    const auto E = reinterpret_cast<xcb_destroy_notify_event_t*>(event);
    xcb_kill_client(g_pWindowManager->DisplayConnection, E->window);

    // fix last window if tile
    const auto CLOSEDWINDOW = g_pWindowManager->getWindowFromDrawable(E->window);
    if (CLOSEDWINDOW && !CLOSEDWINDOW->getIsFloating()) {
        g_pWindowManager->fixWindowOnClose(CLOSEDWINDOW);

        // delete off of the arr
        g_pWindowManager->removeWindowFromVectorSafe(E->window);
    }
}

CWindow* Events::remapWindow(int windowID, bool wasfloating) {
    // Do the setup of the window's params and stuf
    CWindow window;
    window.setDrawable(windowID);
    window.setIsFloating(false);
    window.setDirty(true);
    if (!g_pWindowManager->getMonitorFromCursor()) {
        Debug::log(ERR, "Monitor was null! (remapWindow)");
        // rip! we cannot continue.
    }
    const auto CURRENTSCREEN = g_pWindowManager->getMonitorFromCursor()->ID;
    window.setWorkspaceID(g_pWindowManager->activeWorkspaces[CURRENTSCREEN]);
    window.setMonitor(CURRENTSCREEN);

    window.setDefaultPosition(Vector2D(0, 0));
    window.setDefaultSize(Vector2D(g_pWindowManager->Screen->width_in_pixels / 2.f, g_pWindowManager->Screen->height_in_pixels / 2.f));

    // Set the parent
    // check if lastwindow is on our workspace
    if (auto PLASTWINDOW = g_pWindowManager->getWindowFromDrawable(g_pWindowManager->LastWindow); (PLASTWINDOW && PLASTWINDOW->getWorkspaceID() == g_pWindowManager->activeWorkspaces[CURRENTSCREEN]) || wasfloating) {
        // LastWindow is on our workspace, let's make a new split node

        if (wasfloating || PLASTWINDOW->getIsFloating()) {
            // find a window manually
            PLASTWINDOW = g_pWindowManager->findWindowAtCursor();
        }

        if (PLASTWINDOW) {
            CWindow newWindowSplitNode;
            newWindowSplitNode.setPosition(PLASTWINDOW->getPosition());
            newWindowSplitNode.setSize(PLASTWINDOW->getSize());

            newWindowSplitNode.setChildNodeAID(PLASTWINDOW->getDrawable());
            newWindowSplitNode.setChildNodeBID(windowID);

            newWindowSplitNode.setParentNodeID(PLASTWINDOW->getParentNodeID());

            newWindowSplitNode.setWorkspaceID(window.getWorkspaceID());
            newWindowSplitNode.setMonitor(window.getMonitor());

            // generates a negative node ID
            newWindowSplitNode.generateNodeID();

            // update the parent if exists
            if (const auto PREVPARENT = g_pWindowManager->getWindowFromDrawable(PLASTWINDOW->getParentNodeID()); PREVPARENT) {
                if (PREVPARENT->getChildNodeAID() == PLASTWINDOW->getDrawable()) {
                    PREVPARENT->setChildNodeAID(newWindowSplitNode.getDrawable());
                } else {
                    PREVPARENT->setChildNodeBID(newWindowSplitNode.getDrawable());
                }
            }

            window.setParentNodeID(newWindowSplitNode.getDrawable());
            PLASTWINDOW->setParentNodeID(newWindowSplitNode.getDrawable());

            g_pWindowManager->addWindowToVectorSafe(newWindowSplitNode);
        } else {
            window.setParentNodeID(0);
        }
    } else {
        // LastWindow is not on our workspace, so set the parent to 0.
        window.setParentNodeID(0);
    }

    // Also sets the old one
    g_pWindowManager->calculateNewWindowParams(&window);

    // Set real size. No animations in the beginning. Maybe later. TODO?
    window.setRealPosition(window.getEffectivePosition());
    window.setRealSize(window.getEffectiveSize());

    // Add to arr
    g_pWindowManager->addWindowToVectorSafe(window);

    Debug::log(LOG, "Created a new window! X: " + std::to_string(window.getPosition().x) + ", Y: " + std::to_string(window.getPosition().y) + ", W: " + std::to_string(window.getSize().x) + ", H:" + std::to_string(window.getSize().y) + " ID: " + std::to_string(windowID));

    // Set map values
    g_pWindowManager->Values[0] = XCB_EVENT_MASK_ENTER_WINDOW | XCB_EVENT_MASK_FOCUS_CHANGE;
    xcb_change_window_attributes_checked(g_pWindowManager->DisplayConnection, windowID, XCB_CW_EVENT_MASK, g_pWindowManager->Values);

    g_pWindowManager->setFocusedWindow(windowID);

    // Make all floating windows above
    g_pWindowManager->setAllFloatingWindowsTop();

    return g_pWindowManager->getWindowFromDrawable(windowID);
}

void Events::eventMapWindow(xcb_generic_event_t* event) {
    const auto E = reinterpret_cast<xcb_map_request_event_t*>(event);

    // make sure it's not the bar!
    if (E->window == g_pWindowManager->statusBar.getWindowID())
        return;

    // Map the window
    xcb_map_window(g_pWindowManager->DisplayConnection, E->window);

    remapWindow(E->window);
}

void Events::eventButtonPress(xcb_generic_event_t* event) {
    const auto E = reinterpret_cast<xcb_button_press_event_t*>(event);

    // mouse down!
    g_pWindowManager->mouseKeyDown = E->detail;
    xcb_grab_pointer(g_pWindowManager->DisplayConnection, 0, g_pWindowManager->Screen->root, XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_BUTTON_MOTION | XCB_EVENT_MASK_POINTER_MOTION_HINT,
                     XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC,
                     g_pWindowManager->Screen->root, XCB_NONE, XCB_CURRENT_TIME);

    if (const auto PLASTWINDOW = g_pWindowManager->getWindowFromDrawable(g_pWindowManager->LastWindow); PLASTWINDOW) {
        if (PLASTWINDOW->getIsFloating()) {
            g_pWindowManager->actingOnWindowFloating = PLASTWINDOW->getDrawable();
            g_pWindowManager->mouseLastPos = g_pWindowManager->getCursorPos();
        }
    }
}

void Events::eventButtonRelease(xcb_generic_event_t* event) {
    const auto E = reinterpret_cast<xcb_button_release_event_t*>(event);

    // ungrab the mouse ptr
    xcb_ungrab_pointer(g_pWindowManager->DisplayConnection, XCB_CURRENT_TIME);
    const auto PACTINGWINDOW = g_pWindowManager->getWindowFromDrawable(g_pWindowManager->actingOnWindowFloating);
    if (PACTINGWINDOW)
        PACTINGWINDOW->setDirty(true);
    g_pWindowManager->actingOnWindowFloating = 0;
    g_pWindowManager->mouseKeyDown = 0;
}

void Events::eventKeyPress(xcb_generic_event_t* event) {
    const auto E = reinterpret_cast<xcb_key_press_event_t*>(event);

    const auto KEYSYM = KeybindManager::getKeysymFromKeycode(E->detail);

    for (auto& keybind : KeybindManager::keybinds) {
        if (keybind.getKeysym() != 0 && keybind.getKeysym() == KEYSYM && KeybindManager::modToMask(keybind.getMod()) == E->state) {
            keybind.getDispatcher()(keybind.getCommand());
            return;
            // TODO: fix duplicating keybinds
        }
    }
}

void Events::eventMotionNotify(xcb_generic_event_t* event) {
    const auto E = reinterpret_cast<xcb_motion_notify_event_t*>(event);

    if (!g_pWindowManager->mouseKeyDown)
        return; // mouse up.

    if (!g_pWindowManager->actingOnWindowFloating)
        return; // not acting, return.

    // means we are holding super
    const auto POINTERPOS = g_pWindowManager->getCursorPos();
    const auto POINTERDELTA = Vector2D(POINTERPOS) - g_pWindowManager->mouseLastPos;

    const auto PACTINGWINDOW = g_pWindowManager->getWindowFromDrawable(g_pWindowManager->actingOnWindowFloating);

    if (!PACTINGWINDOW) {
        Debug::log(ERR, "ActingWindow not null but doesn't exist?? (Died?)");
        g_pWindowManager->actingOnWindowFloating = 0;
        return;
    }

    if (abs(POINTERDELTA.x) < 1 && abs(POINTERDELTA.y) < 1)
        return; // micromovements

    if (g_pWindowManager->mouseKeyDown == 1) {
        // moving
        PACTINGWINDOW->setPosition(PACTINGWINDOW->getPosition() + POINTERDELTA);
        PACTINGWINDOW->setEffectivePosition(PACTINGWINDOW->getPosition());
        PACTINGWINDOW->setDefaultPosition(PACTINGWINDOW->getPosition());
        PACTINGWINDOW->setRealPosition(PACTINGWINDOW->getPosition());

        // update workspace if needed
        if (g_pWindowManager->getMonitorFromCursor()) {
            const auto WORKSPACE = g_pWindowManager->activeWorkspaces[g_pWindowManager->getMonitorFromCursor()->ID];
            PACTINGWINDOW->setWorkspaceID(WORKSPACE);
        } else {
            PACTINGWINDOW->setWorkspaceID(-1);
        } 

        PACTINGWINDOW->setDirty(true);
    } else if (g_pWindowManager->mouseKeyDown == 3) {
        // resizing
        PACTINGWINDOW->setSize(PACTINGWINDOW->getSize() + POINTERDELTA);
        // clamp
        PACTINGWINDOW->setSize(Vector2D(std::clamp(PACTINGWINDOW->getSize().x, (double)30, (double)999999), std::clamp(PACTINGWINDOW->getSize().y, (double)30, (double)999999)));

        // apply to other
        PACTINGWINDOW->setDefaultSize(PACTINGWINDOW->getSize());
        PACTINGWINDOW->setEffectiveSize(PACTINGWINDOW->getSize());
        PACTINGWINDOW->setRealSize(PACTINGWINDOW->getSize());

        PACTINGWINDOW->setDirty(true);
    }

    g_pWindowManager->mouseLastPos = POINTERPOS;
}

void Events::eventExpose(xcb_generic_event_t* event) {
    const auto E = reinterpret_cast<xcb_expose_event_t*>(event);

    // Draw the bar, disable thread warn
    g_pWindowManager->mainThreadBusy = false;
    g_pWindowManager->statusBar.draw();
    g_pWindowManager->mainThreadBusy = true;
}