import {z} from 'zod'

export type GetApiV1MetricsDefiTotalValueLockedArgs = {a: string, s?: number | undefined, u?: number | undefined, i?: string | undefined, f?: ('csv' | 'json') | undefined, timestamp_format?: ('unix' | 'humanized') | undefined};

export type GetApiV1MetricsDefiTotalValueLockedOptions = {baseUrl?: string | undefined, ApiKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const timeSeriesDataPoint = z.object({t: z.number().int().optional(), v: z.union([z.number(), z.object({})]).optional(), o: z.record(z.string(), z.unknown()).optional()});

export const timeSeriesResponse = z.array(timeSeriesDataPoint);

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
};

/**
 * Total Value Locked in DeFi (TVL)
 * 
 * GET /v1/metrics/defi/total_value_locked
 */
export const getApiV1MetricsDefiTotalValueLocked = async (args: GetApiV1MetricsDefiTotalValueLockedArgs, options?: GetApiV1MetricsDefiTotalValueLockedOptions) => {
const {baseUrl = "https://api.glassnode.com", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (args.a != null) query.append("a", String(args.a))
if (args.s != null) query.append("s", String(args.s))
if (args.u != null) query.append("u", String(args.u))
if (args.i != null) query.append("i", String(args.i))
if (args.f != null) query.append("f", String(args.f))
if (args.timestamp_format != null) query.append("timestamp_format", String(args.timestamp_format))
if (ApiKeyAuth !== undefined) query.set("api_key", ApiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/metrics/defi/total_value_locked${query.size > 0 ? `?${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(timeSeriesResponse, await res.json())
};