Atakan Doğan Özban
9404efd86c
Separate YouTube video titles from on-video song/artist fields with Pro gating, serve curated fonts and watermark assets for 1:1 preview parity, and include billing/API/docs/deploy stack for self-hosted release.
45 lines
1.5 KiB
TypeScript
45 lines
1.5 KiB
TypeScript
/** Server-only font filesystem helpers. Do not import from client components. */
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import fs from "fs/promises";
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import path from "path";
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import { CURATED_FONTS, type CuratedFontKey } from "./fonts";
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export function getFontsDir(): string {
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return path.join(process.cwd(), "assets", "fonts");
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}
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/** Resolve a curated font file on disk (must exist under assets/fonts). */
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export function resolveCuratedFontPath(key: CuratedFontKey): string {
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const meta = CURATED_FONTS.find((f) => f.key === key);
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if (!meta) throw new Error("Unknown font");
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// Whitelist filename only never accept user-controlled path segments
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const safe = meta.file.replace(/[^a-zA-Z0-9._-]/g, "");
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if (safe !== meta.file) throw new Error("Invalid font asset name");
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return path.join(getFontsDir(), safe);
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}
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/**
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* Validate TTF / OTF magic bytes.
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* TTF: 00 01 00 00 | true | typ1
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* OTF: OTTO
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*/
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export async function assertFontFile(filePath: string): Promise<"ttf" | "otf"> {
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const fh = await fs.open(filePath, "r");
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try {
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const buf = Buffer.alloc(4);
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await fh.read(buf, 0, 4, 0);
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const asStr = buf.toString("ascii");
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if (asStr === "OTTO") return "otf";
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if (asStr === "true" || asStr === "typ1") return "ttf";
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if (buf[0] === 0x00 && buf[1] === 0x01 && buf[2] === 0x00 && buf[3] === 0x00) {
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return "ttf";
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}
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if (asStr === "wOFF" || asStr === "wOF2") {
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throw new Error("WOFF fonts are not supported. Upload a .ttf or .otf file.");
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}
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throw new Error("File is not a valid TTF or OTF font");
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} finally {
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await fh.close();
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}
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}
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