import {z} from 'zod'

export type FullHash = string;

export type GetApiChainIdApiV2TransactionsTransactionHashParamRawTraceArgs = {transaction_hash_param: FullHash, chain_id: string};

export type GetApiChainIdApiV2TransactionsTransactionHashParamRawTraceOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const addressHash = z.string();

export const hexData = z.string();

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

export const rawTrace = z.array(z.object({action: z.object({callType: z.enum(["call", "callcode", "delegatecall", "staticcall"]).optional(), from: addressHash, gas: hexData, init: hexData.optional(), input: hexData, to: addressHash.optional(), value: hexData}), result: z.object({gasUsed: hexData, output: hexData}).optional(), subtraces: z.number().int().gte(0), traceAddress: z.array(z.number().int()), transactionHash: fullHashNullable.optional(), type: z.enum(["call", "create", "create2", "reward", "selfdestruct", "stop", "invalid"])}));

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 step-by-step execution trace for a specific transaction
 * 
 * GET /{chain_id}/api/v2/transactions/{transaction_hash_param}/raw-trace
 * 
 * Also accepts auth: apiKeyAuth
 */
export const getApiChainIdApiV2TransactionsTransactionHashParamRawTrace = async (args: GetApiChainIdApiV2TransactionsTransactionHashParamRawTraceArgs, options?: GetApiChainIdApiV2TransactionsTransactionHashParamRawTraceOptions) => {
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 = `${baseUrl.replace(/\/+$/, '')}/${encodeURIComponent(String(args.chain_id))}/api/v2/transactions/${encodeURIComponent(String(args.transaction_hash_param))}/raw-trace${query.size > 0 ? `?${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(rawTrace, await res.json())
};