import {z} from 'zod'

export type GetApiConstraintsConstraintIdIntervalsArgs = {constraint_id: string, dataset_id: string, contingency_id?: (string | null) | undefined, api_key?: (string | null) | undefined, 'x-api-key'?: (string | null) | undefined};

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

export const constraintIntervalDayResponse = z.object({day: z.number().int(), count: z.number().int(), times: z.array(z.string()).nullable().optional()});

export const constraintIntervalMonthResponse = z.object({month: z.number().int(), count: z.number().int(), days: z.array(constraintIntervalDayResponse).nullable().optional()});

export const constraintIntervalResponse = z.object({year: z.number().int(), count: z.number().int(), months: z.array(constraintIntervalMonthResponse).nullable().optional()});

export const getApiConstraintsConstraintIdIntervalsResponse = z.array(constraintIntervalResponse);

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 Constraint Intervals
 * 
 * GET /constraints/{constraint_id}/intervals
 */
export const getApiConstraintsConstraintIdIntervals = async (args: GetApiConstraintsConstraintIdIntervalsArgs, options?: GetApiConstraintsConstraintIdIntervalsOptions) => {
const {baseUrl = "https://api.gridstatus.io/v1", fetch: fetchFn = fetch} = options ?? {}

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

if (args.dataset_id != null) query.append("dataset_id", String(args.dataset_id))
if (args.contingency_id != null) query.append("contingency_id", String(args.contingency_id))
if (args.api_key != null) query.append("api_key", String(args.api_key))
if (args['x-api-key'] != null) headers.set("x-api-key", String(args['x-api-key']))

const url = `${baseUrl.replace(/\/+$/, '')}/constraints/${encodeURIComponent(String(args.constraint_id))}/intervals${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(getApiConstraintsConstraintIdIntervalsResponse, await res.json())
};