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import { decode, Pixel, Image } from "https://deno.land/x/jpegts/mod.ts"
/** * draw an image to the terminal. * @param imagePath local path or URL */export async function drawImage(imagePath: string) {    let raw: Uint8Array
    if (isUrl(imagePath)) {        const res = await fetch(imagePath)        const blob  = await res.blob();        raw = new Uint8Array(await blob.arrayBuffer())
    } else {        raw = await Deno.readFile(imagePath)    }    
    const image = decode(raw);    const rImage = resizeImage(image, image.width, Math.ceil(image.height / 2))    let appender = "";    for (let y = 0; y < rImage.height; y++) {        for (let x = 0; x < rImage.width; x++) {            const pix = rImage.getPixel(x, y);            appender += pixelToAnsi(pix)        }        appender += "\r\n" + "\x1b[0m"    }    console.log(appender)}
function isUrl(path: string): boolean {    return path.toLowerCase().startsWith("http://") || path.toLowerCase().startsWith("https://")}
function pixelToAnsi(pix: Pixel) {    const bgStart = `\x1b[48;2;${pix.r};${pix.g};${pix.b}m`
    const cStart = `\x1b[38;2;${pix.r};${pix.g};${pix.b}m`
    return `${bgStart}${cStart}▀`    // return `${cStart}.${cEnd}`}

function resizeImage(image: Image, w2: number, h2: number): Image {    const result = new Image();    result.width = w2    result.height = h2    result.data = new Uint8Array(w2 * h2 * 4);
    const x_ratio = image.width / w2;    const y_ratio = image.height / h2;    let px: number, py: number, pix: Pixel    for (let i = 0; i < h2; i++) {        for (let j = 0; j < w2; j++) {            px = Math.floor(j * x_ratio)            py = Math.floor(i * y_ratio)            pix = image.getPixel(px, py)            // set pixel            result.setPixel(j, i, pix)        }            }        return result}