Files
openclaw/skills/meme-maker/scripts/meme.mjs
2026-05-17 09:58:24 +01:00

399 lines
12 KiB
JavaScript
Executable File

#!/usr/bin/env node
import { Buffer } from "node:buffer";
import { existsSync } from "node:fs";
import { mkdir, readFile, stat, writeFile } from "node:fs/promises";
import { homedir } from "node:os";
import path from "node:path";
import { fileURLToPath } from "node:url";
const BASE_DIR = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
const TEMPLATES_PATH = path.join(BASE_DIR, "references", "templates.json");
const IMGFLIP_GET_MEMES_URL = "https://api.imgflip.com/get_memes";
const IMGFLIP_CAPTION_URL = "https://api.imgflip.com/caption_image";
const USER_AGENT = "OpenClawMemeMaker/1.0";
const STOPWORDS = new Set([
"a",
"an",
"and",
"are",
"for",
"in",
"is",
"it",
"of",
"on",
"or",
"the",
"this",
"to",
"use",
"with",
]);
function usage(exitCode = 0) {
const out = exitCode === 0 ? console.log : console.error;
out(`Usage:
meme.mjs list [--json]
meme.mjs search <query> [--json]
meme.mjs suggest <topic> [--limit N] [--json]
meme.mjs render <template> --text TEXT ... [--out PATH] [--service local|imgflip]
meme.mjs refresh [--limit N] [--json]`);
process.exit(exitCode);
}
function parseArgs(argv) {
const flags = { _: [] };
for (let i = 0; i < argv.length; i += 1) {
const arg = argv[i];
if (!arg.startsWith("--")) {
flags._.push(arg);
continue;
}
const eq = arg.indexOf("=");
const key = eq === -1 ? arg.slice(2) : arg.slice(2, eq);
const inline = eq === -1 ? undefined : arg.slice(eq + 1);
if (["json", "help"].includes(key)) {
flags[key] = true;
continue;
}
const value = inline ?? argv[i + 1];
if (inline === undefined) i += 1;
if (value === undefined) throw new Error(`Missing value for --${key}`);
if (key === "text") {
flags.text = [...(flags.text ?? []), value];
} else {
flags[key] = value;
}
}
return flags;
}
function normalize(value) {
return String(value)
.toLowerCase()
.replace(/[^a-z0-9]+/g, " ")
.trim();
}
function tokens(value) {
return normalize(value)
.split(/\s+/)
.filter((token) => token && !STOPWORDS.has(token));
}
async function loadTemplates() {
return JSON.parse(await readFile(TEMPLATES_PATH, "utf8"));
}
function templateHaystack(template) {
return [
template.id,
template.name,
template.use,
...(template.aliases ?? []),
...(template.tags ?? []),
...(template.fields ?? []),
].join(" ");
}
function scoreTemplate(template, query) {
const queryTokens = tokens(query);
const haystack = normalize(templateHaystack(template));
let score = 0;
for (const token of queryTokens) {
if (normalize(template.id).includes(token)) score += 8;
if (normalize(template.name).includes(token)) score += 6;
if ((template.aliases ?? []).some((alias) => normalize(alias).includes(token))) score += 5;
if ((template.tags ?? []).some((tag) => normalize(tag).includes(token))) score += 4;
if (normalize(template.use).includes(token)) score += 3;
if (haystack.includes(token)) score += 1;
}
return score;
}
function findTemplate(templates, selector) {
const wanted = normalize(selector);
const exact = templates.find(
(template) =>
normalize(template.id) === wanted ||
normalize(template.name) === wanted ||
(template.aliases ?? []).some((alias) => normalize(alias) === wanted),
);
if (exact) return exact;
const ranked = templates
.map((template) => ({ template, score: scoreTemplate(template, selector) }))
.filter((entry) => entry.score > 0)
.sort((a, b) => b.score - a.score);
return ranked[0]?.template;
}
function printTemplates(templates, json) {
if (json) {
console.log(JSON.stringify(templates, null, 2));
return;
}
for (const template of templates) {
console.log(`${template.id}: ${template.name}`);
console.log(` use: ${template.use}`);
console.log(` fields: ${template.fields.join(", ")}`);
console.log(` kym: ${template.kymUrl}`);
}
}
function cacheRoot() {
const root =
process.env.XDG_CACHE_HOME ||
(process.platform === "darwin"
? path.join(homedir(), "Library", "Caches")
: path.join(homedir(), ".cache"));
return path.join(root, "openclaw", "meme-maker");
}
function extFromUrl(url) {
const ext = path.extname(new URL(url).pathname).toLowerCase();
return ext && ext.length <= 5 ? ext : ".img";
}
async function fetchBuffer(url) {
const response = await fetch(url, { headers: { "User-Agent": USER_AGENT } });
if (!response.ok) throw new Error(`Fetch failed ${response.status} for ${url}`);
return Buffer.from(await response.arrayBuffer());
}
async function cachedTemplateImage(template) {
const dir = cacheRoot();
await mkdir(dir, { recursive: true });
const file = path.join(
dir,
`${template.id}-${template.imgflipId}${extFromUrl(template.imageUrl)}`,
);
if (existsSync(file)) return { file, buffer: await readFile(file) };
const buffer = await fetchBuffer(template.imageUrl);
await writeFile(file, buffer);
return { file, buffer };
}
function escapeXml(value) {
return String(value)
.replaceAll("&", "&amp;")
.replaceAll("<", "&lt;")
.replaceAll(">", "&gt;")
.replaceAll('"', "&quot;");
}
function wrapText(text, maxChars) {
const words = String(text).trim().split(/\s+/).filter(Boolean);
const lines = [];
let current = "";
for (const word of words) {
const candidate = current ? `${current} ${word}` : word;
if (candidate.length <= maxChars || !current) {
current = candidate;
} else {
lines.push(current);
current = word;
}
}
if (current) lines.push(current);
return lines.length ? lines : [""];
}
function textSvg(text, box, width, height, index) {
const x = box.x * width;
const y = box.y * height;
const w = box.w * width;
const h = box.h * height;
const centerX = x + w / 2;
const centerY = y + h / 2;
const maxChars = Math.max(8, Math.floor(w / Math.max(12, width * 0.032)));
let lines = wrapText(text, maxChars).slice(0, 5);
const fontSize = Math.max(
18,
Math.min(
h / (lines.length * 1.15),
(w / Math.max(...lines.map((line) => line.length), 1)) * 1.65,
width * 0.07,
),
);
const lineHeight = fontSize * 1.08;
const totalHeight = lineHeight * lines.length;
const rotate = box.rotate ? ` rotate(${box.rotate} ${centerX} ${centerY})` : "";
lines = lines.map(escapeXml);
const tspans = lines
.map((line, lineIndex) => {
const dy = lineIndex === 0 ? -(totalHeight - lineHeight) / 2 : lineHeight;
return `<tspan x="${centerX.toFixed(1)}" dy="${dy.toFixed(1)}">${line}</tspan>`;
})
.join("");
return `<text class="meme-text" data-box="${index}" transform="translate(0 ${centerY.toFixed(1)})${rotate}" font-size="${fontSize.toFixed(1)}">${tspans}</text>`;
}
function defaultBoxes(count) {
if (count <= 1) return [{ x: 0.06, y: 0.74, w: 0.88, h: 0.18 }];
if (count === 2) {
return [
{ x: 0.06, y: 0.05, w: 0.88, h: 0.18 },
{ x: 0.06, y: 0.76, w: 0.88, h: 0.18 },
];
}
return Array.from({ length: count }, (_, index) => ({
x: 0.05,
y: 0.04 + index * (0.9 / count),
w: 0.9,
h: Math.min(0.16, 0.8 / count),
}));
}
async function renderLocal(template, texts, flags) {
const { buffer } = await cachedTemplateImage(template);
const imageMime = extFromUrl(template.imageUrl) === ".png" ? "image/png" : "image/jpeg";
const imageData = `data:${imageMime};base64,${buffer.toString("base64")}`;
const boxes = template.boxes?.length
? template.boxes
: defaultBoxes(texts.length || template.fields.length);
const width = Number(template.width);
const height = Number(template.height);
const textNodes = texts
.map((text, index) =>
textSvg(text, boxes[index] ?? boxes[boxes.length - 1], width, height, index),
)
.join("\n");
const svg = `<svg xmlns="http://www.w3.org/2000/svg" width="${width}" height="${height}" viewBox="0 0 ${width} ${height}">
<style>
.meme-text {
font-family: Impact, "Arial Black", Arial, sans-serif;
font-weight: 900;
fill: #fff;
stroke: #000;
stroke-width: ${Math.max(3, Math.round(width / 250))};
paint-order: stroke;
text-anchor: middle;
dominant-baseline: middle;
letter-spacing: 0;
}
</style>
<image href="${imageData}" x="0" y="0" width="${width}" height="${height}" preserveAspectRatio="none"/>
${textNodes}
</svg>
`;
const out = flags.out ?? path.resolve(process.cwd(), `${template.id}.svg`);
await mkdir(path.dirname(path.resolve(out)), { recursive: true });
if (path.extname(out).toLowerCase() === ".png") {
let sharp;
try {
sharp = (await import("sharp")).default;
} catch {
throw new Error(
"PNG output needs the optional sharp package. Use --out meme.svg or install sharp near the skill runner.",
);
}
await sharp(Buffer.from(svg)).png().toFile(out);
} else {
await writeFile(out, svg, "utf8");
}
const size = (await stat(out)).size;
console.log(`${out} (${size} bytes)`);
}
async function renderImgflip(template, texts, flags) {
const username = flags.username || process.env.IMGFLIP_USER;
const password = flags.password || process.env.IMGFLIP_PASS;
if (!username || !password) {
throw new Error(
"Imgflip service requires IMGFLIP_USER and IMGFLIP_PASS, or --username/--password.",
);
}
const body = new URLSearchParams({
template_id: template.imgflipId,
username,
password,
});
if ((template.boxes?.length ?? template.fields.length) <= 2) {
texts.forEach((text, index) => body.set(`text${index}`, text));
} else {
texts.forEach((text, index) => body.set(`boxes[${index}][text]`, text));
}
const response = await fetch(IMGFLIP_CAPTION_URL, {
method: "POST",
headers: {
"Content-Type": "application/x-www-form-urlencoded",
"User-Agent": USER_AGENT,
},
body,
});
const payload = await response.json();
if (!payload.success) throw new Error(payload.error_message || "Imgflip caption_image failed");
console.log(payload.data.url);
}
async function refresh(flags) {
const limit = Number(flags.limit || 25);
const response = await fetch(IMGFLIP_GET_MEMES_URL, { headers: { "User-Agent": USER_AGENT } });
if (!response.ok) throw new Error(`Imgflip get_memes failed ${response.status}`);
const payload = await response.json();
const memes = payload.data.memes.slice(0, limit);
if (flags.json) {
console.log(JSON.stringify(memes, null, 2));
} else {
for (const meme of memes) {
console.log(
`${meme.id}: ${meme.name} (${meme.width}x${meme.height}, boxes=${meme.box_count})`,
);
console.log(` ${meme.url}`);
}
}
}
async function main() {
const flags = parseArgs(process.argv.slice(2));
if (flags.help) usage(0);
const [command, ...rest] = flags._;
if (!command) usage(1);
const templates = await loadTemplates();
if (command === "list") {
printTemplates(templates, flags.json);
return;
}
if (command === "search" || command === "suggest") {
const query = rest.join(" ");
if (!query) throw new Error(`${command} needs a query`);
const limit = Number(flags.limit || (command === "suggest" ? 5 : 20));
const ranked = templates
.map((template) => ({ ...template, score: scoreTemplate(template, query) }))
.filter((template) => template.score > 0)
.sort((a, b) => b.score - a.score)
.slice(0, limit);
printTemplates(ranked, flags.json);
return;
}
if (command === "render") {
const selector = rest.join(" ");
if (!selector) throw new Error("render needs a template id/name");
const template = findTemplate(templates, selector);
if (!template) throw new Error(`No matching template: ${selector}`);
const texts = flags.text ?? [];
if (!texts.length)
throw new Error(`Add text with --text. Fields: ${template.fields.join(", ")}`);
const service = flags.service || "local";
if (service === "local") {
await renderLocal(template, texts, flags);
} else if (service === "imgflip") {
await renderImgflip(template, texts, flags);
} else {
throw new Error(`Unknown service: ${service}`);
}
return;
}
if (command === "refresh") {
await refresh(flags);
return;
}
usage(1);
}
main().catch((error) => {
console.error(`error: ${error.message}`);
process.exit(1);
});