import {z} from 'zod'

export type GetApiGbElexonDynamicMnztArgs = {date_from: string, date_to: string, bm_unit?: string | undefined, settlement_period?: number | undefined, limit?: number | undefined, offset?: number | undefined, timezone?: ('UTC' | 'Europe/Berlin' | 'Europe/London' | 'America/New_York' | 'America/Chicago' | 'America/Los_Angeles') | undefined};

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

export const elexonMNZT = z.object({dataset: z.string().optional(), settlementDate: z.string().optional(), settlementPeriod: z.number().int().gte(-2147483648).lte(2147483647).optional(), time: z.string().optional(), periodMin: z.number().int().gte(-2147483648).lte(2147483647).optional(), nationalGridBmUnit: z.string().optional(), bmUnit: z.string().optional()});

export const getApiGbElexonDynamicMnztResponse = z.object({count: z.number().int(), next: z.string().nullable().optional(), previous: z.string().nullable().optional(), results: z.array(elexonMNZT)});

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
};

/**
 * Minimum Non-Zero Time
 * 
 * GET /gb/elexon/dynamic/mnzt
 */
export const getApiGbElexonDynamicMnzt = async (args: GetApiGbElexonDynamicMnztArgs, options?: GetApiGbElexonDynamicMnztOptions) => {
const {baseUrl = "https://api.modoenergy.com/pub/v1", fetch: fetchFn = fetch, apiKey} = options ?? {}

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

if (args.date_from != null) query.append("date_from", String(args.date_from))
if (args.date_to != null) query.append("date_to", String(args.date_to))
if (args.bm_unit != null) query.append("bm_unit", String(args.bm_unit))
if (args.settlement_period != null) query.append("settlement_period", String(args.settlement_period))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.offset != null) query.append("offset", String(args.offset))
if (args.timezone != null) query.append("timezone", String(args.timezone))
if (apiKey !== undefined) headers.set("X-Token", apiKey)

const url = `${baseUrl.replace(/\/+$/, '')}/gb/elexon/dynamic/mnzt${query.size > 0 ? `?${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(getApiGbElexonDynamicMnztResponse, await res.json())
};