import {z} from 'zod'

export type GetApiChartTokenPoolArgs = {token: string, pool: string, type?: ('1s' | '5s' | '15s' | '1m' | '3m' | '5m' | '15m' | '30m' | '1h' | '2h' | '4h' | '6h' | '8h' | '12h' | '1d' | '3d' | '1w' | '1mn') | undefined, time_from?: number | undefined, time_to?: number | undefined, marketCap?: boolean | undefined, currency?: ('usd' | 'sol' | 'eur') | undefined, removeOutliers?: boolean | undefined, timezone?: string | undefined, fastCache?: boolean | undefined};

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

export const oHLCV = z.object({open: z.number().optional(), close: z.number().optional(), low: z.number().optional(), high: z.number().optional(), volume: z.number().optional(), time: z.number().int().optional()});

export const chartResponse = z.object({oclhv: z.array(oHLCV).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
};

/**
 * Get OHLCV Data for a token/pool pair
 * 
 * GET /chart/{token}/{pool}
 */
export const getApiChartTokenPool = async (args: GetApiChartTokenPoolArgs, options?: GetApiChartTokenPoolOptions) => {
const {baseUrl = "https://data.solanatracker.io", fetch: fetchFn = fetch, apiKey} = options ?? {}

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

if (args.type != null) query.append("type", String(args.type))
if (args.time_from != null) query.append("time_from", String(args.time_from))
if (args.time_to != null) query.append("time_to", String(args.time_to))
if (args.marketCap != null) query.append("marketCap", String(args.marketCap))
if (args.currency != null) query.append("currency", String(args.currency))
if (args.removeOutliers != null) query.append("removeOutliers", String(args.removeOutliers))
if (args.timezone != null) query.append("timezone", String(args.timezone))
if (args.fastCache != null) query.append("fastCache", String(args.fastCache))
if (apiKey !== undefined) headers.set("x-api-key", apiKey)

const url = `${baseUrl.replace(/\/+$/, '')}/chart/${encodeURIComponent(String(args.token))}/${encodeURIComponent(String(args.pool))}${query.size > 0 ? `?${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(chartResponse, await res.json())
};