import {z} from 'zod'

export type SpeedBand = {min_miles?: number | undefined, mph: number};

export type DayTime = {day_offset: number, time: string};

export type DspParams = {timezone?: string | undefined, speed_table?: Array<SpeedBand> | undefined, departure_grid_minutes?: number | undefined, earliest_departure?: (DayTime | null) | undefined, latest_departure?: (DayTime | null) | undefined, service_minutes?: number | undefined, pretrip_minutes?: number | undefined, posttrip_minutes?: number | undefined, turn_minutes?: number | undefined, stop_pay_per_hour?: number | undefined, fairness_weight?: number | undefined, fairness_week_start?: ('monday' | 'tuesday' | 'wednesday' | 'thursday' | 'friday' | 'saturday' | 'sunday') | undefined, span_cost_per_hour?: number | undefined, max_pairs_per_load?: number | undefined, unload_counts_as_break?: boolean | undefined, mip_gap?: number | undefined, time_limit_seconds?: number | undefined};

export type Fallback = {name: string, unit: 'duty' | 'load', cost_per_use?: number | undefined, cost_per_calendar_day?: number | undefined, daily_cap?: (number | null) | undefined};

export type DriverClocks = {driver_id: string, as_of: string, status: 'off_duty' | 'sleeper' | 'on_duty' | 'driving', drive_remaining_minutes: number, shift_remaining_minutes: number, break_remaining_minutes?: number | undefined, cycle_remaining_minutes: number, cycle_by_day?: (Array<number> | null) | undefined, off_duty_since?: (string | null) | undefined, available_from?: (string | null) | undefined};

export type CalculateScheduleRequest = {plan_from: string, days?: number | undefined, commit_days?: number | undefined, now?: (string | null) | undefined, tags?: Array<string> | undefined, params?: DspParams | undefined, fallbacks?: Array<Fallback> | undefined, driver_clocks?: Array<DriverClocks> | undefined};

export type CreateApiV1ActivitiesCalculateScheduleArgs = {body: CalculateScheduleRequest};

export type CreateApiV1ActivitiesCalculateScheduleOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const calculateScheduleResponse = z.object({activity_id: z.string()});

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
};

/**
 * Calculate a driver schedule
 * 
 * POST /v1/activities/calculate-schedule
 */
export const createApiV1ActivitiesCalculateSchedule = async (args: CreateApiV1ActivitiesCalculateScheduleArgs, options?: CreateApiV1ActivitiesCalculateScheduleOptions) => {
const {baseUrl = "https://api.sandbox.usenash.com", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/activities/calculate-schedule${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(calculateScheduleResponse, await res.json())
};