export async function createTiledComposite()

in src/utils/image.ts [70:110]

• 35 lines of code
• 5 McCabe index (conditional complexity)

export async function createTiledComposite(
    imageBuffers: Buffer[],
    imageWidth: number = DEFAULT_IMAGE_SIZE,
    imageHeight: number = DEFAULT_IMAGE_SIZE
): Promise<Buffer> {
  let canvasWidth = imageWidth;
  let canvasHeight = imageHeight;

  if (imageBuffers.length === 2) {
    canvasWidth = imageWidth * 2;  // Double the width for two images side by side
    canvasHeight = imageHeight;    // Height remains the same
  } else if (imageBuffers.length === 3 || imageBuffers.length === 4) {
    canvasWidth = imageWidth * 2;  // Double the width for a 2x2 grid
    canvasHeight = imageHeight * 2; // Double the height for a 2x2 grid
  }

  const images: OverlayOptions[] = imageBuffers.map((buffer, i) => {
    let left = (i % 2) * imageWidth; // 0 for quadrant 1 and 3, imageWidth for quadrant 2 and 4
    let top = i < 2 ? 0 : imageHeight; // 0 for quadrants 1 and 2, imageHeight for quadrants 3 and 4

    return {
      input: buffer,
      left: left,
      top: top,
    };
  });

  // If there are 3 images, the last quadrant should be empty, so no need to put any image there.

  return await sharp({
    create: {
      width: canvasWidth,
      height: canvasHeight,
      channels: 4,
      background: { r: 255, g: 255, b: 255, alpha: 0 },
    },
  })
      .composite(images)
      .png()
      .toBuffer();
}