用 ChatGPT 做 ASO：名称、副标题、关键词字段和描述的提示词，全部符合商店限制

// check-listing.mjs: check store listing texts before you paste them into the consoles.
// Usage: node check-listing.mjs listing.json
// listing.json: { "apple": { "name", "subtitle", "keywords", "promotionalText", "description", "company" },
//                 "google": { "title", "shortDescription", "fullDescription" } }
import { readFileSync } from "node:fs";

const LIMITS = {
  "apple.name": 30, "apple.subtitle": 30, "apple.promotionalText": 170, "apple.description": 4000,
  "google.title": 30, "google.shortDescription": 80, "google.fullDescription": 4000,
};
const PROMO = /(\bbest\b|#1\b|\bnumber one\b|\btop\b|\bfree\b|\bsale\b|\bdiscount\b|\bno ads\b)/i;

const data = JSON.parse(readFileSync(process.argv[2] ?? "listing.json", "utf8"));
const get = (path) => path.split(".").reduce((o, k) => (o ? o[k] : undefined), data) ?? "";
let problems = 0;
const fail = (msg) => { problems++; console.log("FAIL ", msg); };
const warn = (msg) => console.log("WARN ", msg);

for (const [path, max] of Object.entries(LIMITS)) {
  const len = [...get(path)].length; // characters, not UTF-16 code units
  console.log(`${path.padEnd(24)} ${String(len).padStart(4)} / ${max}`);
  if (len > max) fail(`${path} is ${len - max} characters too long`);
}

// Apple keyword field: 100 bytes, comma-separated, each keyword longer than two characters
const kw = get("apple.keywords");
const bytes = Buffer.byteLength(kw, "utf8");
console.log(`${"apple.keywords".padEnd(24)} ${String(bytes).padStart(4)} / 100 bytes`);
if (bytes > 100) fail(`keyword field is ${bytes - 100} bytes too long`);
if (/,\s/.test(kw)) warn("spaces after commas waste bytes");
const words = kw.split(",").map((w) => w.trim().toLowerCase()).filter(Boolean);
const indexed = `${get("apple.name")} ${get("apple.subtitle")} ${get("apple.company")}`
  .toLowerCase().split(/[^\p{L}\p{N}]+/u);
for (const w of words) {
  if ([...w].length <= 2) fail(`keyword "${w}" is too short`);
  if (indexed.includes(w)) warn(`"${w}" is already in the name, subtitle or company name`);
}
const dupes = words.filter((w, i) => words.indexOf(w) !== i);
if (dupes.length) fail(`duplicate keywords: ${[...new Set(dupes)].join(", ")}`);

for (const path of ["apple.name", "apple.subtitle", "google.title"]) {
  if (PROMO.test(get(path))) warn(`${path} contains a ranking or price word; both stores reject these in names`);
}
const appleText = `${get("apple.subtitle")} ${get("apple.promotionalText")} ${get("apple.description")}`;
if (/android|google play/i.test(appleText)) fail("the Apple texts mention Android or Google Play");
const playText = `${get("google.shortDescription")} ${get("google.fullDescription")}`;
if (/\b(iphone|ipad|app store)\b/i.test(playText)) fail("the Google texts mention iPhone, iPad or the App Store");

console.log(problems ? `\n${problems} problem(s) to fix` : "\nNo blocking problems found");
process.exit(problems ? 1 : 0);