import { PublicKey } from "@solana/web3.js";
import { useMemo } from "react";
import type { SWRResponse } from "swr";
import useSWR from "swr";

import { REWARDERS_LIST_URL } from "../constants";

const fetcher = (url: string) => fetch(url).then((res) => res.json());

/**
 * Information about a Rewarder.
 */
export interface LegacyRewarderInfo
  extends Omit<RewarderInfoRaw, "rewarder" | "tokens"> {
  rewarder: PublicKey;
  tokens: PublicKey[];
}

export interface RewarderInfoRaw {
  rewarder: string;
  tokens: string[];
  info?: {
    name: string;
    color: string;
    description: string;
    website: string;
  };
}

/**
 * @deprecated Use useGithubRewarderRegistry instead.
 * Fetches all rewarders.
 * @returns
 */
export const useAllRewarders = (): Omit<
  SWRResponse<RewarderInfoRaw[], Error>,
  "data"
> & {
  data?: LegacyRewarderInfo[];
} => {
  const { data: rawData, ...result } = useSWR<RewarderInfoRaw[], Error>(
    REWARDERS_LIST_URL,
    fetcher
  );
  const data = useMemo(() => {
    if (!rawData) {
      return rawData;
    }
    return rawData.map(({ rewarder, tokens, ...rest }) => ({
      ...rest,
      rewarder: new PublicKey(rewarder),
      tokens: tokens.map((token) => new PublicKey(token)),
    }));
  }, [rawData]);
  return {
    ...result,
    data,
  };
};