import {z} from 'zod'

export type AddressHash = string;

export type GetApiChainIdApiV2SmartContractsAddressHashParamArgs = {address_hash_param: AddressHash, chain_id: string};

export type GetApiChainIdApiV2SmartContractsAddressHashParamOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const addressHash = z.string();

export const smartContract = z.object({abi: z.array(z.object({})).nullable().optional(), additional_sources: z.array(z.object({file_path: z.string().optional(), source_code: z.string().optional()})).nullable().optional(), can_be_visualized_via_sol2uml: z.boolean().nullable().optional(), certified: z.boolean().optional(), coin_balance: z.string().nullable().optional(), compiler_settings: z.object({}).nullable().optional(), compiler_version: z.string().nullable().optional(), conflicting_implementations: z.array(z.object({})).nullable(), constructor_args: z.string().nullable().optional(), creation_bytecode: z.string().nullable(), creation_status: z.string().nullable(), decoded_constructor_args: z.array(z.array(z.union([z.object({}), z.string()]))).nullable().optional(), deployed_bytecode: z.string().nullable(), evm_version: z.string().nullable().optional(), external_libraries: z.array(z.object({address_hash: addressHash.optional(), name: z.string().nullable().optional()})).nullable().optional(), file_path: z.string().nullable().optional(), github_repository_metadata: z.object({}).nullable().optional(), has_constructor_args: z.boolean().nullable().optional(), implementations: z.array(z.object({address_hash: addressHash.optional(), name: z.string().nullable().optional()})).nullable(), is_blueprint: z.boolean().nullable().optional(), is_changed_bytecode: z.boolean().nullable().optional(), is_fully_verified: z.boolean().nullable().optional(), is_partially_verified: z.boolean().nullable().optional(), is_verified: z.boolean().nullable().optional(), is_verified_via_eth_bytecode_db: z.boolean().nullable().optional(), is_verified_via_sourcify: z.boolean().nullable().optional(), is_verified_via_verifier_alliance: z.boolean().nullable().optional(), language: z.enum(["solidity", "vyper", "yul", "scilla", "stylus_rust", "geas"]).nullable().optional(), license_type: z.string().nullable().optional(), market_cap: z.string().nullable().optional(), name: z.string().nullable().optional(), optimization_enabled: z.boolean().nullable().optional(), optimization_runs: z.number().int().nullable().optional(), package_name: z.string().nullable().optional(), proxy_type: z.string().nullable(), reputation: z.string().nullable().optional(), source_code: z.string().nullable().optional(), sourcify_repo_url: z.string().nullable().optional(), transactions_count: z.number().int().nullable().optional(), verification_metadata: z.object({}).nullable().optional(), verified_at: z.string().nullable().optional(), verified_twin_address_hash: z.string().nullable().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
};

/**
 * Retrieve detailed information about a verified smart contract
 * 
 * GET /{chain_id}/api/v2/smart-contracts/{address_hash_param}
 * 
 * Also accepts auth: apiKeyAuth
 */
export const getApiChainIdApiV2SmartContractsAddressHashParam = async (args: GetApiChainIdApiV2SmartContractsAddressHashParamArgs, options?: GetApiChainIdApiV2SmartContractsAddressHashParamOptions) => {
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 = `${baseUrl.replace(/\/+$/, '')}/${encodeURIComponent(String(args.chain_id))}/api/v2/smart-contracts/${encodeURIComponent(String(args.address_hash_param))}${query.size > 0 ? `?${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(smartContract, await res.json())
};