@delirius/welcard/build/structures/welCard.js

WelCard is a lightweight and futuristic welcome card libary designed for WhatsApp Bots.

const devmod = false;

const canvas = require("@napi-rs/canvas");
const { colorFetch } = require("../functions/colorFetch");

canvas.GlobalFonts.registerFromPath(
  `${
    devmod ? "" : "node_modules/@delirius/welcard/"
  }res/fonts/circularstd-black.otf`,
  "circular-std",
);
canvas.GlobalFonts.registerFromPath(
  `${
    devmod ? "" : "node_modules/@delirius/welcard/"
  }res/fonts/notosans-jp-black.ttf`,
  "noto-sans-jp",
);
canvas.GlobalFonts.registerFromPath(
  `${
    devmod ? "" : "node_modules/@delirius/welcard/"
  }res/fonts/notosans-black.ttf`,
  "noto-sans",
);
canvas.GlobalFonts.registerFromPath(
  `${
    devmod ? "" : "node_modules/@delirius/welcard/"
  }res/fonts/notoemoji-bold.ttf`,
  "noto-emoji",
);
canvas.GlobalFonts.registerFromPath(
  `${
    devmod ? "" : "node_modules/@delirius/welcard/"
  }res/fonts/notosans-kr-black.ttf`,
  "noto-sans-kr",
);

class welCard {
  constructor() {
    this.name = null;
    this.author = null;
    this.color = null;
    this.brightness = null;
    this.thumbnail = null;
    this.server = null;
  }

  setName(name) {
    this.name = name;
    return this;
  }

  setAuthor(author) {
    this.author = author;
    return this;
  }

  setColor(color) {
    this.color = color;
    return this;
  }

  setBrightness(brightness) {
    this.brightness = brightness;
    return this;
  }

  setThumbnail(thumbnail) {
    this.thumbnail = thumbnail;
    return this;
  }

  setServer(server) {
    this.server = server;
    return this;
  }

  async build() {
    if (!this.name) {
      throw new Error("Missing name parameter");
    }
    if (!this.author) {
      throw new Error("Missing author parameter");
    }

    let thumbnailURL =
      this.thumbnail ||
      `${devmod ? "" : "node_modules/@delirius/welcard/"}res/noimage.jpg`;

    const validatedColor = await colorFetch(
      this.color || "ff0000",
      parseInt(this.brightness) || 0,
      thumbnailURL,
    );

    const img = await canvas.loadImage(
      `${devmod ? "" : "node_modules/@delirius/welcard/"}res/background.png`,
    );

    const thumbnailCanvas = canvas.createCanvas(564, 564);
    const thumbnailCtx = thumbnailCanvas.getContext("2d");

    let thumbnailImage;

    thumbnailImage = await canvas.loadImage(thumbnailURL, {
      requestOptions: {
        headers: {
          "User-Agent":
            "Mozilla/5.0 (compatible; Discordbot/2.0; +https://discordapp.com)",
        },
      },
    });

    const thumbnailSize = Math.min(thumbnailImage.width, thumbnailImage.height);
    const thumbnailX = (thumbnailImage.width - thumbnailSize) / 2;
    const thumbnailY = (thumbnailImage.height - thumbnailSize) / 2;

    thumbnailCtx.beginPath();
    const cornerRadius2 = 45;
    thumbnailCtx.moveTo(0 + cornerRadius2, 0);
    thumbnailCtx.arcTo(
      thumbnailCanvas.width,
      0,
      thumbnailCanvas.width,
      thumbnailCanvas.height,
      cornerRadius2,
    );
    thumbnailCtx.arcTo(
      thumbnailCanvas.width,
      thumbnailCanvas.height,
      0,
      thumbnailCanvas.height,
      cornerRadius2,
    );
    thumbnailCtx.arcTo(0, thumbnailCanvas.height, 0, 0, cornerRadius2);
    thumbnailCtx.arcTo(0, 0, thumbnailCanvas.width, 0, cornerRadius2);
    thumbnailCtx.closePath();
    thumbnailCtx.clip();

    thumbnailCtx.drawImage(
      thumbnailImage,
      thumbnailX,
      thumbnailY,
      thumbnailSize,
      thumbnailSize,
      0,
      0,
      thumbnailCanvas.width,
      thumbnailCanvas.height,
    );

    if (this.name.length > 15) this.name = `${this.name.slice(0, 15)}...`;
    if (this.author.length > 15) this.author = `${this.author.slice(0, 15)}...`;
    if (this.server.length > 15) this.author = `${this.author.slice(0, 15)}...`;

    const image = canvas.createCanvas(1280, 450);
    const ctx = image.getContext("2d");

    ctx.drawImage(img, 0, 0, 1280, 450);

    ctx.fillStyle = `#${validatedColor}`;
    ctx.font = `75px circular-std, noto-emoji, noto-sans-jp, noto-sans, noto-sans-kr`;
    ctx.fillText(this.name, 70, 120);

    ctx.fillStyle = "#b8b8b8";
    ctx.font = `50px circular-std, noto-emoji, noto-sans-jp, noto-sans, noto-sans-kr`;
    ctx.fillText(this.author, 75, 190);

    ctx.fillStyle = "#b8b8b8";
    ctx.font = `30px circular-std, noto-emoji, noto-sans-jp, noto-sans, noto-sans-kr`;
    ctx.fillText(this.server, 75, 380);

    ctx.drawImage(thumbnailCanvas, 837, 8, 435, 435);

    return image.toBuffer("image/png");
  }
}

module.exports = { welCard };