import { serve } from "https://deno.land/std@0.168.0/http/server.ts";
import { createClient } from "https://esm.sh/@supabase/supabase-js@2.38.4";

const supabaseUrl = Deno.env.get("SUPABASE_URL")!;
const supabaseKey = Deno.env.get("SUPABASE_SERVICE_ROLE_KEY")!;

serve(async (req) => {
  try {
    const supabase = createClient(supabaseUrl, supabaseKey);

    // 删除3个月未访问的集合
    const threeMonthsAgo = new Date();
    threeMonthsAgo.setMonth(threeMonthsAgo.getMonth() - 3);

    const { data: expiredCollections, error: fetchError } = await supabase
      .from("stock_collections")
      .select("id")
      .lt("last_accessed_at", threeMonthsAgo.toISOString());

    if (fetchError) {
      throw new Error(`查询过期集合失败: ${fetchError.message}`);
    }

    if (!expiredCollections || expiredCollections.length === 0) {
      return new Response(
        JSON.stringify({ message: "没有过期的集合需要清理" }),
        {
          headers: { "Content-Type": "application/json" },
          status: 200,
        }
      );
    }

    // 删除过期的集合（级联删除关联的股票和分享链接）
    const collectionIds = expiredCollections.map((c) => c.id);
    const { error: deleteError } = await supabase
      .from("stock_collections")
      .delete()
      .in("id", collectionIds);

    if (deleteError) {
      throw new Error(`删除过期集合失败: ${deleteError.message}`);
    }

    return new Response(
      JSON.stringify({
        message: `成功清理 ${expiredCollections.length} 个过期集合`,
        deletedCount: expiredCollections.length,
      }),
      {
        headers: { "Content-Type": "application/json" },
        status: 200,
      }
    );
  } catch (error: unknown) {
    const errorMessage = error instanceof Error ? error.message : String(error);
    return new Response(
      JSON.stringify({ error: errorMessage }),
      {
        headers: { "Content-Type": "application/json" },
        status: 500,
      }
    );
  }
});