import type { ExtendedChain } from '@openocean.finance/widget-sdk'
import type { Address, Chain } from 'viem'

type ChainBlockExplorer = {
  name: string
  url: string
}

type ChainBlockExplorers = {
  [key: string]: ChainBlockExplorer
  default: ChainBlockExplorer
}

export const convertExtendedChain = (chain: ExtendedChain): Chain => {
    return {
        ...chain,
        ...chain.metamask,
        blockExplorers: chain.metamask?.blockExplorerUrls?.reduce(
          (blockExplorers, blockExplorer, index) => {
            blockExplorers[index === 0 ? 'default' : `${index}`] = {
              name: blockExplorer,
              url: blockExplorer,
            }
            return blockExplorers
          },
          {} as ChainBlockExplorers
        ) ?? {},
        name: chain.metamask?.chainName,
        rpcUrls: {
          default: { http: chain.metamask?.rpcUrls ?? [] },
          public: { http: chain.metamask?.rpcUrls ?? [] },
        },
        contracts: {
          ...(chain.multicallAddress
            ? { multicall3: { address: chain.multicallAddress as Address } }
            : undefined),
        },
      }
}

export function isExtendedChain(chain: any): chain is ExtendedChain {
  return (
    typeof chain === 'object' &&
    chain !== null &&
    'key' in chain &&
    'chainType' in chain &&
    'coin' in chain &&
    'mainnet' in chain &&
    'logoURI' in chain &&
    typeof chain.metamask === 'object' &&
    chain.metamask !== null &&
    typeof chain.nativeToken === 'object' &&
    chain.nativeToken !== null
  )
}