Leon Serfaty
37 lines
1.2 KiB
TypeScript
37 lines
1.2 KiB
TypeScript
import { openai, ART_MODEL } from "../openai";
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import type { ArtProvider } from "../types";
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export class OpenAIArtProvider implements ArtProvider {
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readonly model = ART_MODEL;
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async generateCover(
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prompt: string,
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opts?: { size?: "1024x1024" }
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): Promise<{ data: Buffer; revisedPrompt?: string }> {
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const res = await openai().images.generate({
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model: this.model,
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prompt,
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n: 1,
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size: opts?.size ?? "1024x1024",
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response_format: "b64_json",
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});
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const item = res.data?.[0];
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if (!item?.b64_json) throw new Error("DALL·E returned no image data");
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return {
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data: Buffer.from(item.b64_json, "base64"),
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revisedPrompt: item.revised_prompt,
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};
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}
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}
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/** Build a cover-art prompt for an episode topic. */
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export function buildCoverPrompt(topic: string, tone: string, title?: string): string {
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return [
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`Podcast cover art for an episode titled "${title ?? topic}".`,
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`Topic: ${topic}. Mood/tone: ${tone}.`,
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"Modern, bold, eye-catching square album-cover style.",
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"Strong focal subject, clean composition, vibrant but tasteful colors.",
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"No text, no words, no letters, no logos.",
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].join(" ");
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}
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