import {z} from 'zod'

export type GetApiFlightsSearchArgs = {departure_airport?: string | undefined, arrival_airport?: string | undefined, aircraft?: number | undefined, minimum_flight_time?: number | undefined, maximum_flight_time?: number | undefined, minimum_distance?: number | undefined, maximum_distance?: number | undefined, limit?: number | undefined};

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

export const flightType = z.enum(["P", "C"]);

export const flightSearchResult = z.object({id: z.number().int(), number: z.string(), code: z.string(), departure_airport: z.string(), arrival_airport: z.string(), flight_level: z.string(), route: z.string().nullable(), distance: z.number(), departure_time: z.string(), arrival_time: z.string(), flight_time: z.number(), days_of_week: z.array(z.number().int()), type: flightType, aircraft: z.string().nullable(), notes: z.string().nullable()});

export const getApiFlightsSearchResponse = z.array(flightSearchResult);

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
};

/**
 * Search the schedule
 * 
 * GET /flights/search
 */
export const getApiFlightsSearch = async (args: GetApiFlightsSearchArgs, options?: GetApiFlightsSearchOptions) => {
const {baseUrl = "https://crew.example.com/api/stratos", fetch: fetchFn = fetch, BearerAuth} = options ?? {}

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

if (args.departure_airport != null) query.append("departure_airport", String(args.departure_airport))
if (args.arrival_airport != null) query.append("arrival_airport", String(args.arrival_airport))
if (args.aircraft != null) query.append("aircraft", String(args.aircraft))
if (args.minimum_flight_time != null) query.append("minimum_flight_time", String(args.minimum_flight_time))
if (args.maximum_flight_time != null) query.append("maximum_flight_time", String(args.maximum_flight_time))
if (args.minimum_distance != null) query.append("minimum_distance", String(args.minimum_distance))
if (args.maximum_distance != null) query.append("maximum_distance", String(args.maximum_distance))
if (args.limit != null) query.append("limit", String(args.limit))
if (BearerAuth !== undefined) headers.set('authorization', `Bearer ${BearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/flights/search${query.size > 0 ? `?${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(getApiFlightsSearchResponse, await res.json())
};