import {z} from 'zod'

export type GetApiAgentFriendlyTaSlugMacdArgs = {slug: string, short?: number | undefined, long?: number | undefined, signal?: number | undefined, fetchInterval?: ('m1' | 'm5' | 'm15' | 'm30' | 'h1' | 'h2' | 'h6' | 'h12' | 'd1') | undefined};

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

export const getApiAgentFriendlyTaSlugMacdResponse = z.object({});

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 MACD for trend and momentum analysis
 * 
 * GET /agentFriendly/ta/{slug}/macd
 * 
 * Also accepts auth: apiKey, x402
 */
export const getApiAgentFriendlyTaSlugMacd = async (args: GetApiAgentFriendlyTaSlugMacdArgs, options?: GetApiAgentFriendlyTaSlugMacdOptions) => {
const {baseUrl = "https://rest.coincap.io/v3", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args.short != null) query.append("short", String(args.short))
if (args.long != null) query.append("long", String(args.long))
if (args.signal != null) query.append("signal", String(args.signal))
if (args.fetchInterval != null) query.append("fetchInterval", String(args.fetchInterval))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/agentFriendly/ta/${encodeURIComponent(String(args.slug))}/macd${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(getApiAgentFriendlyTaSlugMacdResponse, await res.json())
};