import trim from 'lodash/trim';
import { useCallback } from 'react';
import { Networks } from '../types';
import { useEnvironment } from './use-environment';

type Net = Exclude<Networks, 'CUSTOM' | 'SANDBOX'>;
export enum DApp {
  Explorer = 'Explorer',
  Console = 'Console',
  Token = 'Token',
}

type DAppLinks = {
  [k in Net]: string;
};

const EmptyLinks: DAppLinks = {
  [Networks.DEVNET]: '',
  [Networks.STAGNET1]: '',
  [Networks.STAGNET3]: '',
  [Networks.TESTNET]: '',
  [Networks.MAINNET]: '',
  [Networks.MIRROR]: '',
};

const ExplorerLinks = {
  ...EmptyLinks,
  [Networks.TESTNET]: 'https://explorer.fairground.wtf',
  [Networks.MAINNET]: 'https://explorer.vega.xyz',
};

const ConsoleLinks = {
  ...EmptyLinks,
  [Networks.STAGNET1]: 'https://stagnet1.console.vega.xyz',
  [Networks.STAGNET3]: 'https://stagnet3.console.vega.xyz',
  [Networks.TESTNET]: 'https://console.fairground.wtf',
};

const TokenLinks = {
  ...EmptyLinks,
  [Networks.DEVNET]: 'https://dev.token.vega.xyz',
  [Networks.STAGNET3]: 'https://stagnet3.token.vega.xyz',
  [Networks.TESTNET]: 'https://token.fairground.wtf',
  [Networks.MAINNET]: 'https://token.vega.xyz',
};

const Links: { [k in DApp]: DAppLinks } = {
  [DApp.Explorer]: ExplorerLinks,
  [DApp.Console]: ConsoleLinks,
  [DApp.Token]: TokenLinks,
};

export const useLinks = (dapp: DApp, network?: Net) => {
  const { VEGA_ENV, VEGA_EXPLORER_URL, VEGA_TOKEN_URL } = useEnvironment();
  const fallback = {
    [DApp.Explorer]: VEGA_EXPLORER_URL,
    [DApp.Token]: VEGA_TOKEN_URL,
  };

  let net = network || VEGA_ENV;
  if (net === Networks.CUSTOM || net === Networks.SANDBOX) {
    net = Networks.TESTNET;
  }

  let baseUrl = trim(Links[dapp][net], '/');
  if (baseUrl.length === 0 && Object.keys(fallback).includes(dapp)) {
    baseUrl = trim(fallback[dapp as DApp.Explorer | DApp.Token] || '', '/');
  }

  const link = useCallback(
    (url?: string) => `${baseUrl}/${trim(url, '/') || ''}`,
    [baseUrl]
  );
  return link;
};

// Vega blog
export const BLOG = 'https://blog.vega.xyz/';

// Token pages
export const TOKEN_NEW_MARKET_PROPOSAL = '/governance/propose/new-market';
export const TOKEN_NEW_NETWORK_PARAM_PROPOSAL =
  '/governance/propose/network-parameter';
export const TOKEN_PROPOSALS = '/governance';
export const TOKEN_PROPOSAL = '/governance/:id';