import {z} from 'zod'

export type GetApiV1PricesHistoryArgs = {symbol: string, from: string, to: string, interval?: string | undefined, limit?: number | undefined};

export type GetApiV1PricesHistoryOptions = {baseUrl?: string | undefined, BearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const historySeriesEntry = z.object({date: z.string(), open: z.string().nullable().optional(), high: z.string().nullable().optional(), low: z.string().nullable().optional(), close: z.string().nullable().optional(), volume: z.string().nullable().optional(), is_stale: z.boolean(), is_closed: z.boolean().nullable().optional()}).and(z.record(z.string(), z.unknown()));

export const historyMeta = z.object({tier: z.string(), count: z.number().int(), ohlc_note: z.string()}).and(z.record(z.string(), z.unknown()));

export const historyResponse = z.object({symbol: z.string(), interval: z.string(), from: z.string(), to: z.string(), series: z.array(historySeriesEntry), meta: historyMeta}).and(z.record(z.string(), z.unknown()));

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
};

/**
 * [DEPRECATED — use /v1/bars] Aggregated close history for a symbol — interval ∈ {1d, 1h}.
 * 
 * GET /v1/prices/history
 * 
 * Also accepts auth: ApiKeyAuth
 */
export const getApiV1PricesHistory = async (args: GetApiV1PricesHistoryArgs, options?: GetApiV1PricesHistoryOptions) => {
const {baseUrl = "https://api.goldprice.dev", fetch: fetchFn = fetch, BearerAuth} = options ?? {}

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

if (args.symbol != null) query.append("symbol", String(args.symbol))
if (args.from != null) query.append("from", String(args.from))
if (args.to != null) query.append("to", String(args.to))
if (args.interval != null) query.append("interval", String(args.interval))
if (args.limit != null) query.append("limit", String(args.limit))
if (BearerAuth !== undefined) headers.set('authorization', `Bearer ${BearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/prices/history${query.size > 0 ? `?${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(historyResponse, await res.json())
};