import { Rectangle, Point } from '@pixi/math';
import { settings } from '@pixi/settings';
import { EventEmitter, TextureCache, uid, getResolutionOfUrl } from '@pixi/utils';
import { BaseTexture } from './BaseTexture.mjs';
import { ImageResource } from './resources/ImageResource.mjs';
import { TextureUvs } from './TextureUvs.mjs';

const DEFAULT_UVS = new TextureUvs();
function removeAllHandlers(tex) {
  tex.destroy = function _emptyDestroy() {
  };
  tex.on = function _emptyOn() {
  };
  tex.once = function _emptyOnce() {
  };
  tex.emit = function _emptyEmit() {
  };
}
class Texture extends EventEmitter {
  constructor(baseTexture, frame, orig, trim, rotate, anchor, borders) {
    super();
    this.noFrame = false;
    if (!frame) {
      this.noFrame = true;
      frame = new Rectangle(0, 0, 1, 1);
    }
    if (baseTexture instanceof Texture) {
      baseTexture = baseTexture.baseTexture;
    }
    this.baseTexture = baseTexture;
    this._frame = frame;
    this.trim = trim;
    this.valid = false;
    this._uvs = DEFAULT_UVS;
    this.uvMatrix = null;
    this.orig = orig || frame;
    this._rotate = Number(rotate || 0);
    if (rotate === true) {
      this._rotate = 2;
    } else if (this._rotate % 2 !== 0) {
      throw new Error("attempt to use diamond-shaped UVs. If you are sure, set rotation manually");
    }
    this.defaultAnchor = anchor ? new Point(anchor.x, anchor.y) : new Point(0, 0);
    this.defaultBorders = borders;
    this._updateID = 0;
    this.textureCacheIds = [];
    if (!baseTexture.valid) {
      baseTexture.once("loaded", this.onBaseTextureUpdated, this);
    } else if (this.noFrame) {
      if (baseTexture.valid) {
        this.onBaseTextureUpdated(baseTexture);
      }
    } else {
      this.frame = frame;
    }
    if (this.noFrame) {
      baseTexture.on("update", this.onBaseTextureUpdated, this);
    }
  }
  update() {
    if (this.baseTexture.resource) {
      this.baseTexture.resource.update();
    }
  }
  onBaseTextureUpdated(baseTexture) {
    if (this.noFrame) {
      if (!this.baseTexture.valid) {
        return;
      }
      this._frame.width = baseTexture.width;
      this._frame.height = baseTexture.height;
      this.valid = true;
      this.updateUvs();
    } else {
      this.frame = this._frame;
    }
    this.emit("update", this);
  }
  destroy(destroyBase) {
    if (this.baseTexture) {
      if (destroyBase) {
        const { resource } = this.baseTexture;
        if (resource?.url && TextureCache[resource.url]) {
          Texture.removeFromCache(resource.url);
        }
        this.baseTexture.destroy();
      }
      this.baseTexture.off("loaded", this.onBaseTextureUpdated, this);
      this.baseTexture.off("update", this.onBaseTextureUpdated, this);
      this.baseTexture = null;
    }
    this._frame = null;
    this._uvs = null;
    this.trim = null;
    this.orig = null;
    this.valid = false;
    Texture.removeFromCache(this);
    this.textureCacheIds = null;
  }
  clone() {
    const clonedFrame = this._frame.clone();
    const clonedOrig = this._frame === this.orig ? clonedFrame : this.orig.clone();
    const clonedTexture = new Texture(this.baseTexture, !this.noFrame && clonedFrame, clonedOrig, this.trim?.clone(), this.rotate, this.defaultAnchor, this.defaultBorders);
    if (this.noFrame) {
      clonedTexture._frame = clonedFrame;
    }
    return clonedTexture;
  }
  updateUvs() {
    if (this._uvs === DEFAULT_UVS) {
      this._uvs = new TextureUvs();
    }
    this._uvs.set(this._frame, this.baseTexture, this.rotate);
    this._updateID++;
  }
  static from(source, options = {}, strict = settings.STRICT_TEXTURE_CACHE) {
    const isFrame = typeof source === "string";
    let cacheId = null;
    if (isFrame) {
      cacheId = source;
    } else if (source instanceof BaseTexture) {
      if (!source.cacheId) {
        const prefix = options?.pixiIdPrefix || "pixiid";
        source.cacheId = `${prefix}-${uid()}`;
        BaseTexture.addToCache(source, source.cacheId);
      }
      cacheId = source.cacheId;
    } else {
      if (!source._pixiId) {
        const prefix = options?.pixiIdPrefix || "pixiid";
        source._pixiId = `${prefix}_${uid()}`;
      }
      cacheId = source._pixiId;
    }
    let texture = TextureCache[cacheId];
    if (isFrame && strict && !texture) {
      throw new Error(`The cacheId "${cacheId}" does not exist in TextureCache.`);
    }
    if (!texture && !(source instanceof BaseTexture)) {
      if (!options.resolution) {
        options.resolution = getResolutionOfUrl(source);
      }
      texture = new Texture(new BaseTexture(source, options));
      texture.baseTexture.cacheId = cacheId;
      BaseTexture.addToCache(texture.baseTexture, cacheId);
      Texture.addToCache(texture, cacheId);
    } else if (!texture && source instanceof BaseTexture) {
      texture = new Texture(source);
      Texture.addToCache(texture, cacheId);
    }
    return texture;
  }
  static fromURL(url, options) {
    const resourceOptions = Object.assign({ autoLoad: false }, options?.resourceOptions);
    const texture = Texture.from(url, Object.assign({ resourceOptions }, options), false);
    const resource = texture.baseTexture.resource;
    if (texture.baseTexture.valid) {
      return Promise.resolve(texture);
    }
    return resource.load().then(() => Promise.resolve(texture));
  }
  static fromBuffer(buffer, width, height, options) {
    return new Texture(BaseTexture.fromBuffer(buffer, width, height, options));
  }
  static fromLoader(source, imageUrl, name, options) {
    const baseTexture = new BaseTexture(source, Object.assign({
      scaleMode: BaseTexture.defaultOptions.scaleMode,
      resolution: getResolutionOfUrl(imageUrl)
    }, options));
    const { resource } = baseTexture;
    if (resource instanceof ImageResource) {
      resource.url = imageUrl;
    }
    const texture = new Texture(baseTexture);
    if (!name) {
      name = imageUrl;
    }
    BaseTexture.addToCache(texture.baseTexture, name);
    Texture.addToCache(texture, name);
    if (name !== imageUrl) {
      BaseTexture.addToCache(texture.baseTexture, imageUrl);
      Texture.addToCache(texture, imageUrl);
    }
    if (texture.baseTexture.valid) {
      return Promise.resolve(texture);
    }
    return new Promise((resolve) => {
      texture.baseTexture.once("loaded", () => resolve(texture));
    });
  }
  static addToCache(texture, id) {
    if (id) {
      if (!texture.textureCacheIds.includes(id)) {
        texture.textureCacheIds.push(id);
      }
      if (TextureCache[id] && TextureCache[id] !== texture) {
        console.warn(`Texture added to the cache with an id [${id}] that already had an entry`);
      }
      TextureCache[id] = texture;
    }
  }
  static removeFromCache(texture) {
    if (typeof texture === "string") {
      const textureFromCache = TextureCache[texture];
      if (textureFromCache) {
        const index = textureFromCache.textureCacheIds.indexOf(texture);
        if (index > -1) {
          textureFromCache.textureCacheIds.splice(index, 1);
        }
        delete TextureCache[texture];
        return textureFromCache;
      }
    } else if (texture?.textureCacheIds) {
      for (let i = 0; i < texture.textureCacheIds.length; ++i) {
        if (TextureCache[texture.textureCacheIds[i]] === texture) {
          delete TextureCache[texture.textureCacheIds[i]];
        }
      }
      texture.textureCacheIds.length = 0;
      return texture;
    }
    return null;
  }
  get resolution() {
    return this.baseTexture.resolution;
  }
  get frame() {
    return this._frame;
  }
  set frame(frame) {
    this._frame = frame;
    this.noFrame = false;
    const { x, y, width, height } = frame;
    const xNotFit = x + width > this.baseTexture.width;
    const yNotFit = y + height > this.baseTexture.height;
    if (xNotFit || yNotFit) {
      const relationship = xNotFit && yNotFit ? "and" : "or";
      const errorX = `X: ${x} + ${width} = ${x + width} > ${this.baseTexture.width}`;
      const errorY = `Y: ${y} + ${height} = ${y + height} > ${this.baseTexture.height}`;
      throw new Error(`Texture Error: frame does not fit inside the base Texture dimensions: ${errorX} ${relationship} ${errorY}`);
    }
    this.valid = width && height && this.baseTexture.valid;
    if (!this.trim && !this.rotate) {
      this.orig = frame;
    }
    if (this.valid) {
      this.updateUvs();
    }
  }
  get rotate() {
    return this._rotate;
  }
  set rotate(rotate) {
    this._rotate = rotate;
    if (this.valid) {
      this.updateUvs();
    }
  }
  get width() {
    return this.orig.width;
  }
  get height() {
    return this.orig.height;
  }
  castToBaseTexture() {
    return this.baseTexture;
  }
  static get EMPTY() {
    if (!Texture._EMPTY) {
      Texture._EMPTY = new Texture(new BaseTexture());
      removeAllHandlers(Texture._EMPTY);
      removeAllHandlers(Texture._EMPTY.baseTexture);
    }
    return Texture._EMPTY;
  }
  static get WHITE() {
    if (!Texture._WHITE) {
      const canvas = settings.ADAPTER.createCanvas(16, 16);
      const context = canvas.getContext("2d");
      canvas.width = 16;
      canvas.height = 16;
      context.fillStyle = "white";
      context.fillRect(0, 0, 16, 16);
      Texture._WHITE = new Texture(BaseTexture.from(canvas));
      removeAllHandlers(Texture._WHITE);
      removeAllHandlers(Texture._WHITE.baseTexture);
    }
    return Texture._WHITE;
  }
}

export { Texture };
//# sourceMappingURL=Texture.mjs.map