73 lines
2.7 KiB
TypeScript
73 lines
2.7 KiB
TypeScript
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import { z } from "zod";
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import type { ProviderApiKeys } from "./keys";
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import { withAgentSystem } from "./agent";
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import { generateStructuredObject } from "./generate-structured";
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import { HASHTAG_USER_REMINDER, HASHTAG_WRITING_RULES } from "./hashtag-rules";
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import { buildPersonaPromptBlock } from "./persona";
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import { getModel } from "./provider";
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import { THREADS_MAX_CHARS } from "@/lib/utils";
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import type { ViralAnalysis } from "@/lib/types/viral";
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const replicaSchema = z.object({
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angle: z.string(),
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hook: z.string(),
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text: z.string().max(THREADS_MAX_CHARS),
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imageBrief: z.string(),
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rationale: z.string(),
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structureNotes: z.string(),
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});
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export interface ReplicateViralInput {
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originalText: string;
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authorName?: string | null;
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viralAnalysis: ViralAnalysis;
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topicLabel: string;
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topicBrief?: string | null;
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persona?: string | null;
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aiProvider: string;
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aiModel: string;
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apiKeys?: ProviderApiKeys;
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}
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export async function replicateViralPost(input: ReplicateViralInput) {
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const model = getModel(input.aiProvider, input.aiModel, input.apiKeys ?? {});
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const object = await generateStructuredObject({
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model,
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provider: input.aiProvider,
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modelId: input.aiModel,
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schema: replicaSchema,
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system: withAgentSystem(`你是 Threads 爆款複製策略師。根據爆款分析報告，為使用者撰寫「同結構、同節奏、但完全原創」的貼文。
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${buildPersonaPromptBlock(input.persona)}
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規則：
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- 複製的是「爆款公式」（hook 手法、情緒節奏、圖文配合），不是抄襲原文
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- 文筆必須像創作者本人，不是只複製爆款語氣
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- text ≤ 500 字（含 #話題標籤）
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${HASHTAG_WRITING_RULES}
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- imageBrief 描述要產出的配圖：版面、配色、圖上文字、風格（繁體中文台灣用語，具體可執行）`),
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prompt: `主題：${input.topicLabel}
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${input.topicBrief ? `Brief：${input.topicBrief}` : ""}
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原文參考（@${input.authorName ?? "匿名"}，只學結構不抄內容）：
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${input.originalText}
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爆款分析：
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- 爆紅原因：${input.viralAnalysis.whyViral.join("；")}
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- Hook 手法：${input.viralAnalysis.hookPattern}
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- 結構：${input.viralAnalysis.structurePattern}
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- 情緒觸發：${input.viralAnalysis.emotionalTrigger}
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- 留言共鳴：${input.viralAnalysis.commentInsights.whyPeopleEngage}
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- 複製策略：${input.viralAnalysis.replicationStrategy}
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- 圖文策略：${input.viralAnalysis.visualAnalysis.replicationTips.join("；")}
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- 繪圖 prompt 參考：${input.viralAnalysis.visualAnalysis.imageGenPrompt}
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請產出一篇可發布的複製版貼文 + 配圖製作說明。${HASHTAG_USER_REMINDER}`,
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});
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return {
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...object,
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text: object.text.slice(0, THREADS_MAX_CHARS),
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};
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}
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