let circularMaskTexture = null;

function countEffects(token) {
  if (!token) {
    return 0;
  }
  let numEffects = token.document.effects?.length || 0;
  token.actor?.temporaryEffects?.forEach((actorEffect) => {
    if (!actorEffect.getFlag("core", "overlay")) {
      numEffects++;
    }
  });
  return numEffects;
}

function sortIcons(e1, e2) {
  if (e1.position.x === e2.position.x) {
    return e1.position.y - e2.position.y;
  }
  return e1.position.x - e2.position.x;
}

function updateIconSize(effectIcon, size) {
  effectIcon.width = size;
  effectIcon.height = size;
}

function polar_to_cartesian(r, theta) {
  return {
    x: r * Math.cos(theta),
    y: r * Math.sin(theta),
  };
}

function updateIconPosition(effectIcon, i, effectIcons, token) {
  const actorSize = token?.actor?.size;
  let max = 20;
  if (actorSize == "tiny") max = 10;
  if (actorSize == "sm") max = 14;
  if (actorSize == "med") max = 16;
  const ratio = i / max;
  // const angularOffset = i < max ? 0 : ratio / 2;
  const gridSize = token?.scene?.grid?.size ?? 100;
  const tokenTileFactor = token?.document?.width ?? 1;
  const sizeOffset = sizeToOffset(actorSize);
  const offset = sizeOffset * tokenTileFactor * gridSize;
  const initialRotation = (0.5 + (1 / max) * Math.PI) * Math.PI;
  const { x, y } = polar_to_cartesian(offset, (ratio + 0) * 2 * Math.PI + initialRotation);
  // debugger;
  effectIcon.position.x = x / 2 + (gridSize * tokenTileFactor) / 2;
  effectIcon.position.y = (-1 * y) / 2 + (gridSize * tokenTileFactor) / 2;
}

// Nudge icons to be on the token ring or slightly outside
function sizeToOffset(size) {
  if (size == "tiny") {
    return 1.4;
  } else if (size == "sm") {
    return 1.0;
  } else if (size == "med") {
    return 1.2;
  } else if (size == "lg") {
    return 0.925;
  } else if (size == "huge") {
    return 0.925;
  } else if (size == "grg") {
    return 0.925;
  }
  return 1.0;
}

function sizeToIconScale(size) {
  if (size == "tiny") {
    return 1.4;
  } else if (size == "sm") {
    return 1.4;
  } else if (size == "med") {
    return 1.4;
  } else if (size == "lg") {
    return 1.25;
  } else if (size == "huge") {
    return 1.55;
  } else if (size == "grg") {
    return 2.2;
  }
  return 1.0;
}

function drawBG(effectIcon, background, gridScale) {
  const r = effectIcon.width / 2;
  const isDorakoUiActive = game.modules.get("pf2e-dorako-ui")?.active;
  const appTheme = isDorakoUiActive ? game.settings.get("pf2e-dorako-ui", "theme.app-theme") : false;
  if (appTheme && appTheme.includes("foundry2")) {
    background.lineStyle((1 * gridScale) / 2, 0x302831, 1, 0);
    background.drawCircle(effectIcon.position.x, effectIcon.position.y, r + 1 * gridScale);
    background.beginFill(0x0b0a13);
    background.drawCircle(effectIcon.position.x, effectIcon.position.y, r + 1 * gridScale);
    background.endFill();
    return;
  } else if (appTheme && appTheme.includes("crb")) {
    background.lineStyle((1 * gridScale) / 2, 0x956d58, 1, 1);
    background.drawCircle(effectIcon.position.x, effectIcon.position.y, r + 1 * gridScale);
    background.lineStyle((1 * gridScale) / 2, 0xe9d7a1, 1, 0);
    background.drawCircle(effectIcon.position.x, effectIcon.position.y, r + 1 * gridScale);
    background.beginFill(0x956d58);
    background.drawCircle(effectIcon.position.x, effectIcon.position.y, r + 1 * gridScale);
    background.endFill();
    return;
  } else if (appTheme && appTheme.includes("bg3")) {
    background.lineStyle((1 * gridScale) / 2, 0x9a8860, 1, 1);
    background.drawCircle(effectIcon.position.x, effectIcon.position.y, r + 1 * gridScale);
    background.lineStyle((1 * gridScale) / 2, 0xd3b87c, 1, 0);
    background.drawCircle(effectIcon.position.x, effectIcon.position.y, r + 1 * gridScale);
    background.beginFill(0x000000);
    background.drawCircle(effectIcon.position.x, effectIcon.position.y, r + 1 * gridScale);
    background.endFill();
    return;
  }
  // background.lineStyle((1 * gridScale) / 2, 0x222222, 1, 1);
  // background.drawCircle(effectIcon.position.x, effectIcon.position.y, r + 1 * gridScale);
  background.lineStyle((1 * gridScale) / 2, 0x444444, 1, 0);
  background.drawCircle(effectIcon.position.x, effectIcon.position.y, r + 1 * gridScale);
  background.beginFill(0x222222);
  background.drawCircle(effectIcon.position.x, effectIcon.position.y, r + 1 * gridScale);
  background.endFill();
}

function updateEffectScales(token) {
  // if (token?.actor?.size == "sm") return;
  const numEffects = countEffects(token);
  if (numEffects > 0 && token.effects.children.length > 0) {
    const background = token.effects.children[0];
    if (!(background instanceof PIXI.Graphics)) return;

    background.clear();

    // Exclude the background and overlay
    const effectIcons = token.effects.children.slice(1, 1 + numEffects);
    const tokenSize = token?.actor?.size;

    const gridSize = token?.scene?.grid?.size ?? 100;
    // Reposition and scale them
    effectIcons.forEach((effectIcon, i, effectIcons) => {
      if (!(effectIcon instanceof PIXI.Sprite)) return;

      effectIcon.anchor.set(0.5);

      const iconScale = sizeToIconScale(tokenSize);
      const gridScale = gridSize / 100;
      const scaledSize = 12 * iconScale * gridScale;
      updateIconSize(effectIcon, scaledSize);
      updateIconPosition(effectIcon, i, effectIcons, token);
      drawBG(effectIcon, background, gridScale);
    });
  }
}

Hooks.once("ready", () => {
  const enabled = game.settings.get("pf2e-dorako-ux", "moving.adjust-token-effects-hud");
  if (!enabled) return;

  const origRefreshEffects = Token.prototype._refreshEffects;
  Token.prototype._refreshEffects = function (...args) {
    // const enabled = game.settings.get("pf2e-dorako-ux", "ux.adjust-token-effects-hud");
    // if (!enabled) {
    //   origRefreshEffects.apply(this, args);
    //   return;
    // }
    if (this) {
      origRefreshEffects.apply(this, args);
      updateEffectScales(this);
    }
  };

  const origDrawEffect = Token.prototype._drawEffect;
  Token.prototype._drawEffect = async function (...args) {
    // const enabled = game.settings.get("pf2e-dorako-ux", "ux.adjust-token-effects-hud");
    // if (!enabled) {
    //   origDrawEffect.apply(this, args);
    //   return;
    // }
    if (this) {
      const src = args[0];
      const tint = args[1];
      // debugger;
      if (!src) return;
      let tex = await loadTexture(src, { fallback: "icons/svg/hazard.svg" });
      let icon = new PIXI.Sprite(tex);
      if (src != game.settings.get("pf2e", "deathIcon")) {
        // If the circular mask hasn't been created yet
        // if (!circularMaskTexture) {
        //   // Define a new render texture that is 110x110
        //   circularMaskTexture = PIXI.RenderTexture.create(110, 110);
        //   // Define the mask sprite
        //   const renderedMaskSprite = new PIXI.Graphics().beginFill(0xffffff).drawCircle(55, 55, 55).endFill();
        //   // Blur the mask sprite
        //   const blurFilter = new PIXI.filters.BlurFilter(2);
        //   renderedMaskSprite.filters = [blurFilter];
        //   // Render the result of the mask sprite to the texture
        //   canvas.app.renderer.render(renderedMaskSprite, circularMaskTexture);
        // }

        const minDimension = Math.min(icon.width, icon.height);
        // Use the blurred pre-made texture and create a new mask sprite for the specific icon
        const myMask = new PIXI.Graphics().beginFill(0xffffff).drawCircle(55, 55, 55).endFill();
        //const myMask = new PIXI.Sprite(circularMaskTexture);
        //myMask.anchor.set(0.5,0.5);
        myMask.width = minDimension;
        myMask.height = minDimension;
        myMask.x = -icon.width / 2;
        myMask.y = -icon.height / 2;

        icon.mask = myMask;
        icon.addChild(myMask);
      }
      // debugger;
      return this.effects.addChild(icon);
    }
  };
});