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

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

export default defineAction({
  description: "List all quotes a given visitor has favorited, most recently favorited first.",
  schema: z.object({
    visitorId: z.string().min(1).describe("Anonymous visitor id (from browser storage)"),
  }),
  http: { method: "GET" },
  run: async (args) => {
    return withActionSpan("list-favorites", { visitorId: args.visitorId }, async () => {
      const favorites = await db()
        .select()
        .from(schema.favorites)
        .where(eq(schema.favorites.visitor_id, args.visitorId));

      if (favorites.length === 0) return [];

      const favoritedAt = new Map(favorites.map((f) => [f.quote_id, f.created_at ?? ""]));
      const allRows = await fetchAllQuoteRows();
      const rows = allRows.filter((row) => favoritedAt.has(row.quote.id));
      rows.sort((a, b) => (favoritedAt.get(b.quote.id) ?? "").localeCompare(favoritedAt.get(a.quote.id) ?? ""));

      return hydrateQuotes(rows, args.visitorId);
    });
  },
});