// AI 扩写(LLM variant)搜索词的提示词解释:从 RunDashboardPage 抽出,供发现旅程视频详情复用。
import { compactValue } from "@/lib/status/status";

export function isLlmVariantQuery(query: Record<string, unknown>): boolean {
  return query.search_query_generation_method === "llm_variant";
}

export function seedTermForQuery(query: Record<string, unknown>): unknown {
  const seedRef =
    query.pattern_seed_ref && typeof query.pattern_seed_ref === "object"
      ? (query.pattern_seed_ref as Record<string, unknown>)
      : {};
  const llmInput =
    query.llm_input_evidence && typeof query.llm_input_evidence === "object"
      ? (query.llm_input_evidence as Record<string, unknown>)
      : {};
  return llmInput.seed_term || seedRef.seed_term || query.search_query;
}

export function llmVariantPromptPayload(query: Record<string, unknown>): Record<string, unknown> {
  const llmInput =
    query.llm_input_evidence && typeof query.llm_input_evidence === "object"
      ? (query.llm_input_evidence as Record<string, unknown>)
      : {};
  const seedTerm = seedTermForQuery(query);
  return {
    "这个提示词在做什么": "拿一个 DemandAgent 种子词，结合 Pattern 证据，让 LLM 生成一条相邻但不重复的抖音搜索 query。",
    "种子词": seedTerm,
    "生成结果": query.search_query,
    "父 query": query.llm_variant_of || "无",
    "提示词版本": query.llm_prompt_version || "query_variant.v1",
    "LLM 模型": query.llm_generation_model || "缺失",
    messages: [
      {
        role: "system",
        content:
          "You generate one concise Chinese short-video search query. " +
          "Return exactly one plain query string. Do not return JSON, " +
          "lists, quotes, explanations, or multiple lines."
      },
      {
        role: "user",
        content: [
          "Seed term:",
          compactValue(seedTerm),
          "",
          "Evidence context:",
          JSON.stringify(llmInput, null, 2),
          "",
          "Create one adjacent search phrase that stays faithful to the evidence. Avoid any phrase listed in existing_search_queries."
        ].join("\n")
      }
    ],
    "输入证据摘要": {
      seed_terms: llmInput.seed_terms,
      itemset_ids: llmInput.itemset_ids,
      category_bindings: llmInput.category_bindings,
      element_bindings: llmInput.element_bindings,
      existing_search_queries: llmInput.existing_search_queries
    }
  };
}