import {z} from 'zod'

export type GetApiTransactionsTransactionHashRawTraceArgs = {transaction_hash: string};

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

export const rawTraceCallAction = z.object({callType: z.string(), to: z.string(), from: z.string(), input: z.string(), gas: z.string(), value: z.string()});

export const rawTraceCreateAction = z.object({from: z.string(), gas: z.string(), init: z.string(), value: z.string()});

export const rawTraceSelfDestructAction = z.object({address: z.string(), balance: z.string(), refundAddress: z.string()});

export const rawTraceCallResult = z.object({gasUsed: z.string(), output: z.string()});

export const rawTraceCreateResult = z.object({address: z.string(), code: z.string(), gasUsed: z.string()});

export const rawTrace = z.object({action: z.union([rawTraceCallAction, rawTraceCreateAction, rawTraceSelfDestructAction]), subtraces: z.number().int(), traceAddress: z.array(z.number().int()), type: z.string(), error: z.string().optional(), result: z.union([rawTraceCallResult, rawTraceCreateResult]).optional()});

export const getApiTransactionsTransactionHashRawTraceResponse = z.array(rawTrace);

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 transaction raw trace
 * 
 * GET /transactions/{transaction_hash}/raw-trace
 */
export const getApiTransactionsTransactionHashRawTrace = async (args: GetApiTransactionsTransactionHashRawTraceArgs, options?: GetApiTransactionsTransactionHashRawTraceOptions) => {
const {baseUrl = "https://eth.blockscout.com/api/v2", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/transactions/${encodeURIComponent(String(args.transaction_hash))}/raw-trace${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(getApiTransactionsTransactionHashRawTraceResponse, await res.json())
};