import {z} from 'zod'

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

export const addressHash = z.string();

export const implementation = z.object({address_hash: addressHash, name: z.string().nullable()});

export const metadataTag = z.object({meta: z.record(z.string(), z.unknown()).nullable(), name: z.string(), ordinal: z.number().int(), slug: z.string(), tagType: z.enum(["name", "generic", "classifier", "information", "note", "protocol"])});

export const metadata = z.object({tags: z.array(metadataTag)});

export const tag = z.object({address_hash: addressHash, display_name: z.string(), label: z.string()});

export const proxyType = z.enum(["eip1167", "eip1967", "eip1822", "eip1967_oz", "eip1967_beacon", "master_copy", "basic_implementation", "basic_get_implementation", "comptroller", "eip2535", "clone_with_immutable_arguments", "eip7702", "resolved_delegate_proxy", "erc7760", "minimal_proxy"]).nullable();

export const watchlistName = z.object({display_name: z.string(), label: z.string()});

export const address = z.object({ens_domain_name: z.string().nullable(), hash: addressHash, implementations: z.array(implementation), is_contract: z.boolean().nullable(), is_scam: z.boolean(), is_verified: z.boolean().nullable(), metadata: metadata.nullable(), name: z.string().nullable(), private_tags: z.array(tag).optional(), proxy_type: proxyType, public_tags: z.array(tag).optional(), reputation: z.enum(["ok", "scam"]), watchlist_names: z.array(watchlistName).optional()});

export const integerStringNullable = z.string().nullable();

export const timestamp = z.string();

export const fullHash = z.string();

export const integerString = z.string();

export const internalTransaction = z.object({block_number: z.number().int(), created_contract: address.nullable(), error: z.string().nullable(), from: address, gas_limit: integerStringNullable, index: z.number().int(), success: z.boolean(), timestamp: timestamp, to: address.nullable(), transaction_hash: fullHash, transaction_index: z.number().int(), type: z.string(), value: integerString});

export const getApiInternalTransactionsResponse = z.object({items: z.array(internalTransaction), next_page_params: z.object({})});

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
};

/**
 * get internal transactions
 * 
 * GET /internal-transactions
 * 
 * Also accepts auth: apiKeyAuth
 */
export const getApiInternalTransactions = async (options?: GetApiInternalTransactionsOptions) => {
const {baseUrl = "https://api.blockscout.com", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/internal-transactions${query.size > 0 ? `?${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(getApiInternalTransactionsResponse, await res.json())
};