import {z} from 'zod'

export type GetApiX402PaymentInstructionsArgs = {limit?: number | undefined, pageToken?: string | undefined, cid?: string | undefined, name?: string | undefined, id?: string | undefined};

export type GetApiX402PaymentInstructionsOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const paymentRequirement = z.object({asset: z.string(), pay_to: z.string(), network: z.enum(["base", "base-sepolia", "eip155:8453", "eip155:84532"]), description: z.string().max(255).optional(), amount: z.string()});

export const paymentInstruction = z.object({id: z.string().optional(), version: z.number().int().optional(), payment_requirements: z.array(paymentRequirement).optional(), name: z.string().optional(), description: z.string().optional(), created_at: z.string().optional()});

export const getApiX402PaymentInstructionsResponse = z.object({data: z.object({payment_instructions: z.array(paymentInstruction).optional(), next_page_token: z.string().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
};

/**
 * List Payment Instructions
 * 
 * GET /x402/payment_instructions
 */
export const getApiX402PaymentInstructions = async (args: GetApiX402PaymentInstructionsArgs, options?: GetApiX402PaymentInstructionsOptions) => {
const {baseUrl = "https://api.pinata.cloud/v3", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args.limit != null) query.append("limit", String(args.limit))
if (args.pageToken != null) query.append("pageToken", String(args.pageToken))
if (args.cid != null) query.append("cid", String(args.cid))
if (args.name != null) query.append("name", String(args.name))
if (args.id != null) query.append("id", String(args.id))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/x402/payment_instructions${query.size > 0 ? `?${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(getApiX402PaymentInstructionsResponse, await res.json())
};