import crypto from "node:crypto";
import { mkdir, readFile, rm, writeFile } from "node:fs/promises";
import { createWriteStream } from "node:fs";
import { resolve, join } from "node:path";
import { Readable } from "node:stream";
import { pipeline } from "node:stream/promises";

import stringify from "json-stable-stringify-without-jsonify";
import { fileURLToPath } from "node:url";

const __filename = fileURLToPath(import.meta.url);
const __dirname = resolve(__filename, "..");

// Defines where the font lives
const FONT_DIR = resolve(__dirname, "../shared/fonts/material-symbols");

// Defines the settings for the font
const FONT_BASE_URL = `https://fonts.googleapis.com/css2?family=Material+Symbols+Rounded:opsz,wght,FILL,GRAD@24,400,0..1,0`;

// Defines the subset of icons for the font
const icons = [
  "accessibility",
  "accessible",
  "add_circle",
  "add",
  "air_purifier_gen",
  "air",
  "airline_seat_recline_normal",
  "airplane_ticket",
  "apartment",
  "apparel",
  "arrow_back_ios",
  "arrow_back",
  "arrow_forward_ios",
  "arrow_forward",
  "arrow_right",
  "arrow_upward",
  "assistant_navigation",
  "asterisk",
  "attractions",
  "award_star",
  "bakery_dining",
  "balcony",
  "bathroom",
  "bathtub",
  "beach_access",
  "bed",
  "bedroom_parent",
  "box",
  "brunch_dining",
  "business_center",
  "calendar_add_on",
  "calendar_clock",
  "calendar_month",
  "calendar_today",
  "call_quality",
  "call",
  "camera",
  "cancel",
  "chair",
  "charging_station",
  "check_box",
  "check_circle",
  "check",
  "checked_bag",
  "checkroom",
  "chevron_left",
  "chevron_right",
  "close",
  "coffee_maker",
  "coffee",
  "compare_arrows",
  "computer",
  "concierge",
  "confirmation_number",
  "connected_tv",
  "content_copy",
  "contract",
  "cool_to_dry",
  "countertops",
  "credit_card_heart",
  "credit_card",
  "credit_score",
  "curtains_closed",
  "curtains",
  "deck",
  "delete",
  "desk",
  "device_thermostat",
  "diamond",
  "dining",
  "directions_run",
  "directions_subway",
  "directions",
  "downhill_skiing",
  "download",
  "dresser",
  "edit_calendar",
  "edit_square",
  "edit",
  "electric_bike",
  "electric_car",
  "elevator",
  "emoji_transportation",
  "error_circle_rounded",
  "error",
  "exercise",
  "family_restroom",
  "fastfood",
  "favorite",
  "fax",
  "featured_seasonal_and_gifts",
  "festival",
  "filter_alt",
  "filter",
  "format_list_bulleted",
  "floor_lamp",
  "forest",
  "garage",
  "globe",
  "golf_course",
  "groups",
  "health_and_beauty",
  "heat",
  "hiking",
  "home",
  "hot_tub",
  "houseboat",
  "hvac",
  "id_card",
  "imagesmode",
  "info",
  "iron",
  "kayaking",
  "kettle",
  "keyboard_arrow_down",
  "keyboard_arrow_right",
  "keyboard_arrow_up",
  "king_bed",
  "kitchen",
  "landscape",
  "laundry",
  "link",
  "liquor",
  "live_tv",
  "local_bar",
  "local_cafe",
  "local_convenience_store",
  "local_drink",
  "local_laundry_service",
  "local_parking",
  "location_city",
  "location_on",
  "lock",
  "loyalty",
  "luggage",
  "mail",
  "map",
  "meeting_room",
  "microwave",
  "mode_fan",
  "museum",
  "music_cast",
  "music_note",
  "nature",
  "night_shelter",
  "nightlife",
  "open_in_new",
  "pan_zoom",
  "panorama",
  "pedal_bike",
  "person",
  "pets",
  "phone",
  "photo_camera",
  "pool",
  "print",
  "radio",
  "recommend",
  "redeem",
  "refresh",
  "remove",
  "restaurant",
  "room_service",
  "router",
  "sailing",
  "sauna",
  "scene",
  "search",
  "sell",
  "shopping_bag",
  "shower",
  "single_bed",
  "skateboarding",
  "smoke_free",
  "smoking_rooms",
  "spa",
  "sports_esports",
  "sports_golf",
  "sports_handball",
  "sports_tennis",
  "stairs",
  "star",
  "straighten",
  "styler",
  "support_agent",
  "swipe",
  "sync_saved_locally",
  "table_bar",
  "theater_comedy",
  "things_to_do",
  "train",
  "tram",
  "transit_ticket",
  "travel_luggage_and_bags",
  "travel",
  "trophy",
  "tv_guide",
  "tv_remote",
  "upload",
  "visibility_off",
  "visibility",
  "ward",
  "warning",
  "water_full",
  "wifi",
  "yard",
].sort();

function createHash(value: unknown) {
  const stringified = stringify(value);
  const hash = crypto.createHash("sha256");
  hash.update(stringified);
  return hash.digest("hex");
}

const hash = createHash(icons).substring(0, 8);

async function fetchIconUrl(url: string) {
  const response = await fetch(url, {
    headers: {
      Accept:
        "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7",
      "User-Agent":
        "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36",
    },
  });

  if (!response.ok) {
    console.error(`Unable to fetch woff2 for ${url}`);
    process.exit(1);
  }

  const text = await response.text();

  const isWoff2 = /format\('woff2'\)/.test(text);
  if (!isWoff2) {
    console.error(`Unable to identify woff2 font in response`);
    process.exit(1);
  }

  const srcUrl = text.match(/src: url\(([^)]+)\)/);

  if (srcUrl && srcUrl[1]) {
    return srcUrl[1];
  }

  return null;
}

async function download(url: string, destFolder: string) {
  const dest = resolve(join(destFolder, `/rounded-${hash}.woff2`));

  try {
    const response = await fetch(url);

    if (!response.ok) {
      console.error(`Unable to fetch ${url}`);
      process.exit(1);
    }

    if (!response.body) {
      console.error(`Bad response from ${url}`);
      process.exit(1);
    }

    const fileStream = createWriteStream(dest);

    // @ts-expect-error: type mismatch
    const readableNodeStream = Readable.fromWeb(response.body);

    await pipeline(readableNodeStream, fileStream);
  } catch (error) {
    console.error(`Error downloading file from ${url}:`, error);
    process.exit(1);
  }
}
async function cleanFontDirs() {
  await rm(FONT_DIR, { recursive: true, force: true });
  await mkdir(FONT_DIR, { recursive: true });
  await writeFile(
    join(FONT_DIR, ".auto-generated"),
    `Auto-generated, do not edit. Use scripts/material-symbols-update.mts to update.\nhash=${hash}\ncreated=${new Date().toISOString()}\n`,
    { encoding: "utf-8" }
  );
}

async function updateFontCSS() {
  const file = resolve(__dirname, "../packages/design-system/lib/fonts.css");

  const css = await readFile(file, {
    encoding: "utf-8",
  });

  await writeFile(
    file,
    css.replace(
      /url\(\/_static\/shared\/fonts\/material-symbols\/rounded[^)]+\)/,
      `url(/_static/shared/fonts/material-symbols/rounded-${hash}.woff2)`
    ),
    {
      encoding: "utf-8",
    }
  );
}

async function main() {
  const fontUrl = `${FONT_BASE_URL}&icon_names=${icons.join(",")}&display=block`;

  const iconUrl = await fetchIconUrl(fontUrl);

  if (iconUrl) {
    await cleanFontDirs();

    await download(iconUrl, FONT_DIR);

    await updateFontCSS();

    console.log("Successfully updated icons!");
    process.exit(0);
  } else {
    console.error(
      `Unable to find the icon font src URL in CSS response from Google Fonts at ${fontUrl}`
    );
  }
}

main();