import { defineAction } from "@agent-native/core/action";
import { z } from "zod";

import { withActionSpan } from "../server/otel.js";
import { fetchAllQuoteRows, hydrateQuotes, parseTags } from "../server/lib/quotes.js";

export default defineAction({
  description:
    "Get one random poem quote, optionally restricted to a tag. Use for a \"quote of the day\" / discover surface.",
  schema: z.object({
    tag: z.string().optional().describe("Only pick from quotes with this tag"),
    visitorId: z
      .string()
      .optional()
      .describe("Anonymous visitor id, used to mark whether this visitor already favorited the pick"),
  }),
  http: { method: "GET" },
  run: async (args) => {
    return withActionSpan("get-random-quote", { tag: args.tag }, async () => {
      const rows = await fetchAllQuoteRows();
      const candidates = args.tag
        ? rows.filter((row) => parseTags(row.quote.tags_json).includes(args.tag!))
        : rows;

      if (candidates.length === 0) return null;

      const pick = candidates[Math.floor(Math.random() * candidates.length)];
      const [hydrated] = await hydrateQuotes([pick], args.visitorId);
      return hydrated;
    });
  },
});