"use client";

import { useCallback, useEffect, useMemo, useState } from "react";
import { getFlowLedger } from "@/lib/api/client";
import type { FlowLedgerApiResponse } from "@/lib/api/types";
import { buildFlowLedger } from "@/lib/flow-ledger/build";
import type { FlowLedger } from "@/lib/flow-ledger/types";

export function useFlowLedger(runId: string) {
  const [input, setInput] = useState<FlowLedgerApiResponse | null>(null);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState<string | null>(null);

  const load = useCallback(async () => {
    setLoading(true);
    setError(null);
    try {
      setInput(await getFlowLedger(runId, new URLSearchParams(window.location.search).get("debug") === "1"));
    } catch (err) {
      setError(err instanceof Error ? err.message : String(err));
    } finally {
      setLoading(false);
    }
  }, [runId]);

  useEffect(() => {
    void load();
  }, [load]);

  const ledger: FlowLedger | null = useMemo(() => (input ? buildFlowLedger(input) : null), [input]);
  return { input, ledger, loading, error, reload: load };
}