import {z} from 'zod'

export type GetApiV1ChainNameTokensTokenAddressTokenHoldersV2Args = {chainName: string, tokenAddress: string, 'no-snapshot'?: boolean | undefined, 'block-height'?: number | undefined, date?: string | undefined, 'page-size'?: number | undefined, 'page-number'?: number | undefined};

export type GetApiV1ChainNameTokensTokenAddressTokenHoldersV2Options = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const getApiV1ChainNameTokensTokenAddressTokenHoldersV2Response = z.object({updated_at: z.string().optional(), chain_id: z.number().int().optional(), chain_name: z.string().optional(), chain_tip_height: z.number().int().optional(), chain_tip_signed_at: z.string().optional(), items: z.array(z.object({contract_decimals: z.number().int().optional(), contract_name: z.string().optional(), contract_ticker_symbol: z.string().optional(), contract_address: z.string().optional(), supports_erc: z.array(z.string()).optional(), logo_url: z.string().optional(), address: z.string().optional(), balance: z.string().optional(), total_supply: z.string().optional(), block_height: z.number().int().optional()})).optional(), pagination: z.object({has_more: z.boolean().optional(), page_number: z.number().int().optional(), page_size: z.number().int().optional(), total_count: z.number().int().optional()}).optional()});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * Returns a paginated list of current or historical token holders for a specified ERC20 or ERC721 token.
 * 
 * GET /v1/{chainName}/tokens/{tokenAddress}/token_holders_v2/
 */
export const getApiV1ChainNameTokensTokenAddressTokenHoldersV2 = async (args: GetApiV1ChainNameTokensTokenAddressTokenHoldersV2Args, options?: GetApiV1ChainNameTokensTokenAddressTokenHoldersV2Options) => {
const {baseUrl = "https://api.covalenthq.com", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/json")

if (args['no-snapshot'] != null) query.append("no-snapshot", String(args['no-snapshot']))
if (args['block-height'] != null) query.append("block-height", String(args['block-height']))
if (args.date != null) query.append("date", String(args.date))
if (args['page-size'] != null) query.append("page-size", String(args['page-size']))
if (args['page-number'] != null) query.append("page-number", String(args['page-number']))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/${encodeURIComponent(String(args.chainName))}/tokens/${encodeURIComponent(String(args.tokenAddress))}/token_holders_v2/${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(getApiV1ChainNameTokensTokenAddressTokenHoldersV2Response, await res.json())
};