package wm

import fmt "core:fmt"
import "core:os"
import "core:log"
import "core:math"
import "core:strings"
import x "vendor:x11/xlib"


main :: proc () {
    display: ^x.Display
    root: x.Window
    attr: x.XWindowAttributes
    start: x.XButtonEvent

    display = x.OpenDisplay(nil)
    if display == nil {
        fmt.println("Could not open display")
        os.exit(1)
    }

    x.GrabKey(display, i32(x.KeysymToKeycode(display, x.StringToKeysym("F1"))), {.Mod1Mask},
            x.DefaultRootWindow(display), true, .GrabModeAsync, .GrabModeAsync);
    // x.GrabButton(display, 1, Mod1Mask, DefaultRootWindow(dpy), true,
    //         ButtonPressMask|ButtonReleaseMask|PointerMotionMask, GrabModeAsync, GrabModeAsync, None, None);
    // XGrabButton(display, 3, Mod1Mask, DefaultRootWindow(display), true,
    //         ButtonPressMask|ButtonReleaseMask|PointerMotionMask, GrabModeAsync, GrabModeAsync, None, None);
    // x.SelectInput
    //     display,
    //     root,
    //     {.SubstructureRedirect, .SubstructureNotify});
    // x.Synchronize(display, false);

    for {
        e: x.XEvent
        x.NextEvent(display, &e)
        fmt.println("Received Event: ", e)

        #partial switch e.type {
        case .KeyPress:
            x.RaiseWindow(display, e.xkey.subwindow)
        case .ButtonPress:
            x.GetWindowAttributes(display, e.xbutton.subwindow, &attr)
            start = e.xbutton
        case .MotionNotify:
            xdiff := e.xbutton.x_root - start.x_root;
            ydiff := e.xbutton.y_root - start.y_root;
            xpos := attr.x + (start.button==.Button1 ? xdiff : 0)
            ypos := attr.y + (start.button==.Button1 ? ydiff : 0)
            width := u32(max(1, attr.width + (start.button==.Button2 ? xdiff : 0)))
            height := u32(max(1, attr.height + (start.button==.Button2 ? ydiff : 0)))
            x.MoveResizeWindow(display, start.subwindow, xpos, ypos, width, height)
        case .ButtonRelease:
            // start.subwindow = nil;
        }
        // else if(ev.xbutton.subwindow != None)
        // else if(ev.type == MotionNotify && start.subwindow != None)
        // {
        //     int xdiff = ev.xbutton.x_root - start.x_root;
        //     int ydiff = ev.xbutton.y_root - start.y_root;
        //     XMoveResizeWindow(dpy, start.subwindow,
        //                       attr.x + (start.button==1 ? xdiff : 0),
        //                       attr.y + (start.button==1 ? ydiff : 0),
        //                       MAX(1, attr.width + (start.button==3 ? xdiff : 0)),
        //                       MAX(1, attr.height + (start.button==3 ? ydiff : 0)));
        // }
        // else if(ev.type == ButtonRelease)
        //     start.subwindow = None;
    }
}