import {z} from 'zod'

export type MerchantRole = 'seller' | 'payout';

export type GetApiMerchantsArgs = {start_time?: string | undefined, end_time?: string | undefined, per_page?: number | undefined, page?: number | undefined, live?: boolean | undefined, platform_role?: MerchantRole | undefined, status?: string | undefined, payments_enabled?: boolean | undefined, payouts_enabled?: boolean | undefined};

export type GetApiMerchantsOptions = {baseUrl?: string | undefined, apiKey?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const amount = z.number().int().gte(0);

export const merchantRole = z.enum(["seller", "payout"]);

export const submerchantListItem = z.object({id: z.string(), live: z.boolean(), created_at: z.string(), updated_at: z.string(), account_id: z.string(), name: z.string(), platform_role: merchantRole, status: z.enum(["accepted", "declined"]), payments_enabled: z.boolean(), payouts_enabled: z.boolean()});

export const submerchantsList = z.object({resource: z.string(), total: amount, page: amount, per_page: amount, last_page: amount, data: z.array(submerchantListItem)});

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
};

/**
 * Merchant: List
 * 
 * GET /merchants
 */
export const getApiMerchants = async (args: GetApiMerchantsArgs, options?: GetApiMerchantsOptions) => {
const {baseUrl = "https://komoju.com/api/v1", fetch: fetchFn = fetch, apiKey} = options ?? {}

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

if (args.start_time != null) query.append("start_time", String(args.start_time))
if (args.end_time != null) query.append("end_time", String(args.end_time))
if (args.per_page != null) query.append("per_page", String(args.per_page))
if (args.page != null) query.append("page", String(args.page))
if (args.live != null) query.append("live", String(args.live))
if (args.platform_role != null) query.append("platform_role", String(args.platform_role))
if (args.status != null) query.append("status", String(args.status))
if (args.payments_enabled != null) query.append("payments_enabled", String(args.payments_enabled))
if (args.payouts_enabled != null) query.append("payouts_enabled", String(args.payouts_enabled))
if (apiKey !== undefined) headers.set('authorization', `Basic ${btoa(`${apiKey.username}:${apiKey.password}`)}`)

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