/**
 * temporary fix for https://github.com/AUTOMATIC1111/stable-diffusion-webui/issues/668
 * @see https://github.com/gradio-app/gradio/issues/1721
 */

/*
window.addEventListener( 'resize', () => imageMaskResize());

function imageMaskResize() {
    const canvases = gradioApp().querySelectorAll('#img2maskimg .touch-none canvas');
    if (!canvases.length) {
        window.removeEventListener('resize', imageMaskResize);
        return;
    }

    const wrapper = canvases[0].closest('.touch-none');
    const previewImage = wrapper.previousElementSibling;

    if (!previewImage.complete) {
        previewImage.addEventListener('load', imageMaskResize);
        return;
    }

    const w = previewImage.width;
    const h = previewImage.height;
    const nw = previewImage.naturalWidth;
    const nh = previewImage.naturalHeight;
    const portrait = nh > nw;

    const wW = Math.min(w, portrait ? h / nh * nw : w / nw * nw);
    const wH = Math.min(h, portrait ? h / nh * nh : w / nw * nh);

    wrapper.style.width = `${wW}px`;
    wrapper.style.height = `${wH}px`;
    wrapper.style.left = `0px`;
    wrapper.style.top = `0px`;

    canvases.forEach(c => {
        c.style.width = c.style.height = '';
        c.style.maxWidth = '100%';
        c.style.maxHeight = '100%';
        c.style.objectFit = 'contain';
    });
 }

 onUiUpdate(() => imageMaskResize());
*/

onUiLoaded(function () {
  const color_box = '<input type="color">';
  const brush_size = '<input type="range" min="0.75" max="110.0">';
  let is_drawing = false;
  let img_src = [];
  let spl_instances = [];
  let spl_pan_instances = [];
  let img2img_tab_index = 0;
  let intervalLastUIUpdate;
  const container = gradioApp().querySelector(".gradio-container");
  const observer = new MutationObserver(() =>
    gradioApp()
      .querySelectorAll('div[data-testid="image"]')
      .forEach(function (elem, i) {
        let img_parent = elem.parentElement.querySelector(
          'div[data-testid="image"] > div'
        );
        let img = img_parent.querySelector("img");
        if (img) {
          if (img_src[i] != img.src) {
            let tool_buttons = img_parent.querySelectorAll("button");
            //console.log(tool_buttons);
            if (tool_buttons.length > 2) {
              img_parent.style.visibility = "hidden";

              if (intervalLastUIUpdate != null)
                clearInterval(intervalLastUIUpdate);

              intervalLastUIUpdate = setInterval(function () {
                clearInterval(intervalLastUIUpdate);
                img_parent.addEventListener("mouseup", function (e) {});

                let spl_parent = elem.parentElement;
                let spl;
                let spl_pan;
                let isPanning;
                let splid;

                if (spl_parent.className != "spl-pane") {
                  spl = new Spotlight();
                  spl.init(spl_parent, "-" + spl_parent.id);

                  spl.addControl("undo", spl_undo_handler);
                  spl_pan = spl.addControl("pan", spl_pan_handler);
                  spl.addControl("brush", spl_brush_handler, brush_size);
                  if (tool_buttons.length == 5) {
                    spl.addControl("color", spl_color_handler, color_box);
                  }
                  spl.addControl("clear", spl_clear_handler);

                  spl_instances[i] = spl;
                  spl_pan_instances[i] = spl_pan;
                } else {
                  spl = spl_instances[i];
                  spl_pan = spl_pan_instances[i];
                }

                img_src[i] = img.src;
                //console.log("NEWIMAGE");

                function spl_undo_handler(e) {
                  tool_buttons[0].click();
                }

                function spl_clear_handler(e) {
                  tool_buttons[2].click();
                  spl.panzoom(false);
                  img_parent.classList.remove("no-point-events");
                  img_parent.parentElement.classList.remove("move");
                  document.removeEventListener("wheel", preventDefault, false);
                  setTimeout(function () {
                    spl.close(false, true);
                    img_parent.style.flexGrow = "1";
                    img_src[i] = "";
                    elem.style.transform = "none";
                  }, 500);
                }

                function spl_color_handler(e) {}
                function spl_brush_handler(e) {}

                function preventDefault(e) {
                  e = e || window.event;
                  if (e.preventDefault) {
                    e.preventDefault();
                  }
                  e.returnValue = false;
                }

                function pan_toggle(val, target) {
                  isPanning = val;
                  target.classList.toggle("on", isPanning);
                  spl.panzoom(val);

                  if (isPanning) {
                    img_parent.classList.add("no-point-events");
                    img_parent.parentElement.classList.add("move");
                    document.addEventListener("wheel", preventDefault, {
                      passive: false,
                    });
                  } else {
                    img_parent.classList.remove("no-point-events");
                    img_parent.parentElement.classList.remove("move");
                    document.removeEventListener(
                      "wheel",
                      preventDefault,
                      false
                    );
                  }
                }

                function spl_pan_handler(e) {
                  isPanning = !isPanning;
                  pan_toggle(isPanning, this);
                }

                function update_color(listener) {
                  let input_color = img_parent.querySelector(
                    "input[type='color']"
                  );
                  let spl =
                    img_parent.parentElement.parentElement.parentElement
                      .parentElement.parentElement;
                  let spl_color = spl.querySelector(
                    ".spl-color input[type='color']"
                  );
                  spl_color.value = input_color.value;

                  if (listener) {
                    spl_color.addEventListener("input", function (ev) {
                      input_color.value = ev.target.value;
                      updateInput(input_color);
                      pan_toggle(false, spl_pan);
                    });
                  }
                }

                function update_brush(listener) {
                  let input_range = img_parent.querySelector(
                    "input[type='range']"
                  );
                  let spl =
                    img_parent.parentElement.parentElement.parentElement
                      .parentElement.parentElement;
                  let spl_brush = spl.querySelector(
                    ".spl-brush input[type='range']"
                  );
                  spl_brush.value = input_range.value;

                  if (listener) {
                    spl_brush.addEventListener("input", function (ev) {
                      input_range.value = ev.target.value;
                      updateInput(input_range);
                    });
                  }
                }

                function init_drawing_tools() {
                  let input_color = img_parent.querySelector(
                    "input[type='color']"
                  );
                  if (!input_color) {
                    let tbcolor = img_parent.querySelector(
                      "button[aria-label='Select brush color']"
                    );
                    if (tbcolor) {
                      tbcolor.click();
                      setTimeout(function () {
                        update_color(true);
                      }, 100);
                    }
                  } else {
                    setTimeout(function () {
                      update_color(false);
                    }, 100);
                  }

                  let input_range = img_parent.querySelector(
                    "input[type='range']"
                  );
                  if (!input_range) {
                    let tbrange = img_parent.querySelector(
                      "button[aria-label='Use brush']"
                    );

                    if (tbrange) {
                      tbrange.click();
                      setTimeout(function () {
                        update_brush(true);
                      }, 100);
                    }
                  } else {
                    setTimeout(function () {
                      update_brush(false);
                    }, 100);
                  }
                }

                let w = img.naturalWidth;
                let h = img.naturalHeight;
                img_parent.style.width = `${w}px`;
                img_parent.style.height = `${h}px`;

                spl.show([
                  {
                    media: "node",
                    src: elem,
                    //autohide: true,
                    //control: ["pan","clear","undo","fullscreen","autofit","zoom-in","zoom-out","close"],
                    class: "relative",
                  },
                ]);

                img_parent.style.flexGrow = "0";
                pan_toggle(false, spl_pan);
                spl.panzoom(false);
                setTimeout(function () {
                  init_drawing_tools();
                }, 500);
                img_parent.style.visibility = "visible";
              }, 1000);
            }
          }
        }
      })
  );
  observer.observe(container, { childList: true, subtree: true });

  /* 	gradioApp().querySelectorAll('#mode_img2img > .tabitem').forEach(function (tb, ti){	
		tb.querySelectorAll('[id^="img2img_copy_to_"] > button').forEach(function (btn, bi){	
			
			btn.addEventListener("click", function(e) {
				console.log(ti + " > " + bi);
				let src_canvas = tb.querySelector('[key="drawing"]');
				if(src_canvas){					
					let dest_canvas = gradioApp().querySelector('#mode_img2img .tabitem:nth-child('+parseInt(bi+1)+') [key="drawing"]');
					//let destCtx = dest_canvas.getContext('2d');
					//destCtx.drawImage(src_canvas, 0, 0);	
					console.log(src_canvas);
					console.log(dest_canvas);
				}
			})
		})
	})
	
 */
});

/* 
let intervalLastUIUpdate;
function onLastUIUpdate(){
	clearInterval(intervalLastUIUpdate);
	const img2img_tab = gradioApp().querySelector('#img2img_img2img_tab');
	if(img2img_tab && selectedTabItemId=="tab_img2img"){
		const current_img2img_tab_index = get_img2img_tab_index()[0];
		//if(img2img_tab_index != current_img2img_tab_index){
			console.log(current_img2img_tab_index);
			if(current_img2img_tab_index > 3 || current_img2img_tab_index == 0) return;
			img2img_tab_index = current_img2img_tab_index;
			let tabid;
			
			if(img2img_tab_index == 1){
				tabid = "#img2img_img2img_sketch_tab";// #img2img_sketch";			
			}else if(img2img_tab_index == 2){
				tabid = "#img2img_inpaint_tab";// #img2maskimg";
			}else if(img2img_tab_index == 3){
				tabid = "#img2img_inpaint_sketch_tab";// #inpaint_sketch";
			}
			//const parent_img2img_tab_img = gradioApp().querySelector('#mode_img2img > div:nth-child('+(img2img_tab_index+2)+') div[data-testid="image"] > div');
			const parent_img2img_tab_img = gradioApp().querySelector('#mode_img2img '+tabid+' div[data-testid="image"] > div');		
			const img2img_tab_img = parent_img2img_tab_img.querySelector('img');			
			if(img2img_tab_img){			
				parent_img2img_tab_img.style.flexGrow = "0";				
				img2img_tab_img.onload = function() {
					let w = this.naturalWidth; 
					let h = this.naturalHeight; 
					parent_img2img_tab_img.style.width = `${w}px`;
					parent_img2img_tab_img.style.height = `${h}px`;
				}
			}else{
				parent_img2img_tab_img.style.flexGrow = "1";
			}
		//}
	}
}

onUiUpdate(function() {	
	if(intervalLastUIUpdate != null) clearInterval(intervalLastUIUpdate);
	intervalLastUIUpdate = setInterval(onLastUIUpdate, 1000);	
}) */