import {z} from 'zod'

export type DateTimeRange = {date: string, dateWindow?: string | undefined, time?: string | undefined, timeWindow?: string | undefined};

export type OriginDestination = {id?: string | undefined, originLocationCode?: string | undefined, originRadius?: number | undefined, alternativeOriginsCodes?: Array<string> | undefined, destinationLocationCode?: string | undefined, destinationRadius?: number | undefined, alternativeDestinationsCodes?: Array<string> | undefined, departureDateTimeRange?: DateTimeRange | undefined, arrivalDateTimeRange?: DateTimeRange | undefined, includedConnectionPoints?: Array<string> | undefined, excludedConnectionPoints?: Array<string> | undefined};

export type TravelerType = 'ADULT' | 'CHILD' | 'SENIOR' | 'YOUNG' | 'HELD_INFANT' | 'SEATED_INFANT' | 'STUDENT';

export type Traveler = {id: string, travelerType: TravelerType, associatedAdultId?: string | undefined};

export type FlightOfferSource = 'GDS';

export type ExtendedPricingOptions = {includedCheckedBagsOnly?: boolean | undefined};

export type TravelClass = 'ECONOMY' | 'PREMIUM_ECONOMY' | 'BUSINESS' | 'FIRST';

export type Coverage = 'MOST_SEGMENTS' | 'AT_LEAST_ONE_SEGMENT' | 'ALL_SEGMENTS';

export type SearchCriteria = {excludeAllotments?: boolean | undefined, addOneWayOffers?: boolean | undefined, maxFlightOffers?: number | undefined, maxPrice?: number | undefined, allowAlternativeFareOptions?: boolean | undefined, oneFlightOfferPerDay?: boolean | undefined, additionalInformation?: ({chargeableCheckedBags?: boolean | undefined, brandedFares?: boolean | undefined}) | undefined, pricingOptions?: ExtendedPricingOptions | undefined, flightFilters?: ({crossBorderAllowed?: boolean | undefined, moreOvernightsAllowed?: boolean | undefined, returnToDepartureAirport?: boolean | undefined, railSegmentAllowed?: boolean | undefined, busSegmentAllowed?: boolean | undefined, maxFlightTime?: number | undefined, carrierRestrictions?: ({blacklistedInEUAllowed?: boolean | undefined, excludedCarrierCodes?: Array<string> | undefined, includedCarrierCodes?: Array<string> | undefined}) | undefined, cabinRestrictions?: (Array<{cabin?: TravelClass | undefined, coverage?: Coverage | undefined, originDestinationIds?: Array<string> | undefined}>) | undefined, connectionRestriction?: ({maxNumberOfConnections?: number | undefined, airportChangeAllowed?: boolean | undefined, technicalStopsAllowed?: boolean | undefined}) | undefined}) | undefined};

export type GetFlightOffersQuery = {currencyCode?: string | undefined, originDestinations: Array<OriginDestination>, travelers: Array<Traveler>, sources: Array<FlightOfferSource>, searchCriteria?: SearchCriteria | undefined};

export type CreateApiShoppingFlightOffersArgs = {'X-HTTP-Method-Override': string, body: GetFlightOffersQuery};

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

export const issue = z.object({status: z.number().int().optional(), code: z.number().int().optional(), title: z.string().optional(), detail: z.string().optional(), source: z.object({pointer: z.string().optional(), parameter: z.string().optional(), example: z.string().optional()}).optional()});

export const collectionMeta = z.object({count: z.number().int().optional(), oneWayCombinations: z.array(z.object({originDestinationId: z.string().optional(), flightOfferIds: z.array(z.string()).optional()})).optional()});

export const flightOfferSource = z.literal("GDS");

export const travelClass = z.enum(["ECONOMY", "PREMIUM_ECONOMY", "BUSINESS", "FIRST"]);

export const co2Emission = z.object({weight: z.number().int().optional(), weightUnit: z.string().optional(), cabin: travelClass.optional()});

export const flightEndPoint = z.object({iataCode: z.string().optional(), terminal: z.string().optional(), at: z.string().optional()});

export const aircraftEquipment = z.object({code: z.string().optional()});

export const operatingFlight = z.object({carrierCode: z.string().min(1).max(2).optional()});

export const flightStop = z.object({iataCode: z.string().optional(), duration: z.string().optional(), arrivalAt: z.string().optional(), departureAt: z.string().optional()});

export const segment = z.object({id: z.string().optional(), numberOfStops: z.number().int().optional(), blacklistedInEU: z.boolean().optional(), co2Emissions: z.array(co2Emission).optional(), departure: flightEndPoint.optional(), arrival: flightEndPoint.optional(), carrierCode: z.string().min(1).max(2).optional(), number: z.string().min(1).max(4).optional(), aircraft: aircraftEquipment.optional(), operating: operatingFlight.optional(), duration: z.string().optional(), stops: z.array(flightStop).optional()});

export const additionalServiceType = z.enum(["CHECKED_BAGS", "MEALS", "SEATS", "OTHER_SERVICES"]);

export const feeType = z.enum(["TICKETING", "FORM_OF_PAYMENT", "SUPPLIER"]);

export const fee = z.object({amount: z.string().optional(), type: feeType.optional()});

export const tax = z.object({amount: z.string().optional(), code: z.string().optional()});

export const extendedPrice = z.object({margin: z.string().optional(), grandTotal: z.string().optional(), billingCurrency: z.string().optional(), additionalServices: z.array(z.object({amount: z.string().optional(), type: additionalServiceType.optional()})).optional(), currency: z.string().optional(), total: z.string().optional(), base: z.string().optional(), fees: z.array(fee).optional(), taxes: z.array(tax).optional(), refundableTaxes: z.string().optional()});

export const pricingOptionsFareType = z.array(z.enum(["PUBLISHED", "NEGOTIATED", "CORPORATE"]));

export const travelerPricingFareOption = z.enum(["STANDARD", "INCLUSIVE_TOUR", "SPANISH_MELILLA_RESIDENT", "SPANISH_CEUTA_RESIDENT", "SPANISH_CANARY_RESIDENT", "SPANISH_BALEARIC_RESIDENT", "AIR_FRANCE_METROPOLITAN_DISCOUNT_PASS", "AIR_FRANCE_DOM_DISCOUNT_PASS", "AIR_FRANCE_COMBINED_DISCOUNT_PASS", "AIR_FRANCE_FAMILY", "ADULT_WITH_COMPANION", "COMPANION"]);

export const travelerType = z.enum(["ADULT", "CHILD", "SENIOR", "YOUNG", "HELD_INFANT", "SEATED_INFANT", "STUDENT"]);

export const price = z.object({currency: z.string().optional(), total: z.string().optional(), base: z.string().optional(), fees: z.array(fee).optional(), taxes: z.array(tax).optional(), refundableTaxes: z.string().optional()});

export const sliceDiceIndicator = z.enum(["LOCAL_AVAILABILITY", "SUB_OD_AVAILABILITY_1", "SUB_OD_AVAILABILITY_2"]);

export const baggageAllowance = z.object({quantity: z.number().int().optional(), weight: z.number().int().optional(), weightUnit: z.string().optional()});

export const serviceName = z.enum(["PRIORITY_BOARDING", "AIRPORT_CHECKIN"]);

export const flightOffer = z.object({type: z.string(), id: z.string(), source: flightOfferSource.optional(), instantTicketingRequired: z.boolean().optional(), disablePricing: z.boolean().optional(), nonHomogeneous: z.boolean().optional(), oneWay: z.boolean().optional(), paymentCardRequired: z.boolean().optional(), lastTicketingDate: z.string().optional(), numberOfBookableSeats: z.number().gte(1).lte(9).optional(), itineraries: z.array(z.object({duration: z.string().optional(), segments: z.array(segment)})).optional(), price: extendedPrice.optional(), pricingOptions: z.object({fareType: pricingOptionsFareType.optional(), includedCheckedBagsOnly: z.boolean().optional(), refundableFare: z.boolean().optional(), noRestrictionFare: z.boolean().optional(), noPenaltyFare: z.boolean().optional()}).optional(), validatingAirlineCodes: z.array(z.string()).optional(), travelerPricings: z.array(z.object({travelerId: z.string(), fareOption: travelerPricingFareOption, travelerType: travelerType, associatedAdultId: z.string().optional(), price: price.optional(), fareDetailsBySegment: z.array(z.object({segmentId: z.string(), cabin: travelClass.optional(), fareBasis: z.string().optional(), brandedFare: z.string().optional(), class: z.string().optional(), isAllotment: z.boolean().optional(), allotmentDetails: z.object({tourName: z.string().optional(), tourReference: z.string().optional()}).optional(), sliceDiceIndicator: sliceDiceIndicator.optional(), includedCheckedBags: baggageAllowance.optional(), additionalServices: z.object({chargeableCheckedBags: baggageAllowance.optional(), chargeableSeatNumber: z.string().optional(), otherServices: z.array(serviceName).optional()}).optional()}))})).optional()});

export const locationValue = z.object({cityCode: z.string().optional(), countryCode: z.string().optional()});

export const locationEntry = z.object({key: z.string()}).and(z.record(z.string(), locationValue));

export const aircraftEntry = z.object({key: z.string().optional()}).and(z.record(z.string(), z.string()));

export const currencyEntry = z.object({key: z.string()}).and(z.record(z.string(), z.string()));

export const carrierEntry = z.object({key: z.string().optional()}).and(z.record(z.string(), z.string()));

export const dictionaries = z.object({locations: locationEntry.optional(), aircraft: aircraftEntry.optional(), currencies: currencyEntry.optional(), carriers: carrierEntry.optional()});

export const createApiShoppingFlightOffersResponse = z.object({warnings: z.array(issue).optional(), meta: collectionMeta.optional(), data: z.array(flightOffer), dictionaries: dictionaries.optional()});

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
};

/**
 * Return list of Flight Offers based on posted searching criteria.
 * 
 * POST /shopping/flight-offers
 */
export const createApiShoppingFlightOffers = async (args: CreateApiShoppingFlightOffersArgs, options?: CreateApiShoppingFlightOffersOptions) => {
const {baseUrl = "https://test.api.amadeus.com/v2", fetch: fetchFn = fetch} = options ?? {}

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

if (args['X-HTTP-Method-Override'] != null) headers.set("X-HTTP-Method-Override", String(args['X-HTTP-Method-Override']))

const url = `${baseUrl.replace(/\/+$/, '')}/shopping/flight-offers${query.size > 0 ? `?${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(createApiShoppingFlightOffersResponse, await res.json())
};